"""Page helper registration for sx docs.

All helpers return data values (dicts, lists) — no sx_call(), no SxExpr.
Markup composition lives entirely in .sx files.
"""
from __future__ import annotations


def _register_sx_helpers() -> None:
    """Register Python data helpers as page helpers."""
    from shared.sx.pages import register_page_helpers
    from content.highlight import highlight as _highlight

    register_page_helpers("sx", {
        "highlight": _highlight,
        "component-source": _component_source,
        "primitives-data": _primitives_data,
        "special-forms-data": _special_forms_data,
        "reference-data": _reference_data,
        "attr-detail-data": _attr_detail_data,
        "header-detail-data": _header_detail_data,
        "event-detail-data": _event_detail_data,
        "read-spec-file": _read_spec_file,
        "bootstrapper-data": _bootstrapper_data,
        "bundle-analyzer-data": _bundle_analyzer_data,
        "routing-analyzer-data": _routing_analyzer_data,
        "data-test-data": _data_test_data,
        "run-spec-tests": _run_spec_tests,
        "run-modular-tests": _run_modular_tests,
        "streaming-demo-data": _streaming_demo_data,
        "affinity-demo-data": _affinity_demo_data,
        "optimistic-demo-data": _optimistic_demo_data,
        "action:add-demo-item": _add_demo_item,
        "offline-demo-data": _offline_demo_data,
        "prove-data": _prove_data,
        "page-helpers-demo-data": _page_helpers_demo_data,
        "spec-explorer-data": _spec_explorer_data,
        "spec-explorer-data-by-slug": _spec_explorer_data_by_slug,
        "handler-source": _handler_source,
    })


def _component_source(name: str) -> str:
    """Return the pretty-printed defcomp/defisland source for a named component."""
    from shared.sx.jinja_bridge import get_component_env
    from shared.sx.parser import serialize
    from shared.sx.types import Component, Island
    from shared.sx.ref.sx_ref import build_component_source

    comp = get_component_env().get(name)
    if isinstance(comp, Island):
        return build_component_source({
            "type": "island", "name": name,
            "params": list(comp.params) if comp.params else [],
            "has-children": comp.has_children,
            "body-sx": serialize(comp.body, pretty=True),
            "affinity": None,
        })
    if not isinstance(comp, Component):
        return build_component_source({
            "type": "not-found", "name": name,
            "params": [], "has-children": False, "body-sx": "", "affinity": None,
        })
    return build_component_source({
        "type": "component", "name": name,
        "params": list(comp.params),
        "has-children": comp.has_children,
        "body-sx": serialize(comp.body, pretty=True),
        "affinity": comp.affinity,
    })


def _handler_source(name: str) -> str:
    """Return the pretty-printed defhandler source for a named handler."""
    from shared.sx.handlers import get_handler
    from shared.sx.parser import serialize

    hdef = get_handler("sx", name)
    if not hdef:
        return f";;; Handler not found: {name}"

    parts = [f"(defhandler {hdef.name}"]
    if hdef.path:
        parts.append(f'  :path "{hdef.path}"')
    if hdef.method != "get":
        parts.append(f"  :method :{hdef.method}")
    if not hdef.csrf:
        parts.append("  :csrf false")
    if hdef.returns != "element":
        parts.append(f'  :returns "{hdef.returns}"')
    param_strs = ["&key"] + list(hdef.params) if hdef.params else []
    parts.append(f"  ({' '.join(param_strs)})" if param_strs else "  ()")
    body_sx = serialize(hdef.body, pretty=True)
    # Indent body by 2 spaces
    body_lines = body_sx.split("\n")
    parts.append("  " + body_lines[0])
    for line in body_lines[1:]:
        parts.append("  " + line)
    return "\n".join(parts) + ")"


def _primitives_data() -> dict:
    """Return the PRIMITIVES dict for the primitives docs page."""
    from content.pages import PRIMITIVES
    return PRIMITIVES


def _special_forms_data() -> dict:
    """Parse special-forms.sx and return categorized form data."""
    import os
    from shared.sx.parser import parse_all
    from shared.sx.ref.sx_ref import categorize_special_forms

    ref_dir = _ref_dir()
    spec_path = os.path.join(ref_dir, "special-forms.sx")
    with open(spec_path) as f:
        exprs = parse_all(f.read())
    return categorize_special_forms(exprs)


def _reference_data(slug: str) -> dict:
    """Return reference table data for a given slug."""
    from content.pages import (
        REQUEST_ATTRS, BEHAVIOR_ATTRS, SX_UNIQUE_ATTRS,
        REQUEST_HEADERS, RESPONSE_HEADERS,
        EVENTS, JS_API, ATTR_DETAILS, HEADER_DETAILS,
    )
    from shared.sx.ref.sx_ref import build_reference_data

    # Build raw data dict and detail keys based on slug
    if slug == "attributes":
        raw = {
            "req-attrs": [list(t) for t in REQUEST_ATTRS],
            "beh-attrs": [list(t) for t in BEHAVIOR_ATTRS],
            "uniq-attrs": [list(t) for t in SX_UNIQUE_ATTRS],
        }
        detail_keys = list(ATTR_DETAILS.keys())
    elif slug == "headers":
        raw = {
            "req-headers": [list(t) for t in REQUEST_HEADERS],
            "resp-headers": [list(t) for t in RESPONSE_HEADERS],
        }
        detail_keys = list(HEADER_DETAILS.keys())
    elif slug == "events":
        from content.pages import EVENT_DETAILS
        raw = {"events-list": [list(t) for t in EVENTS]}
        detail_keys = list(EVENT_DETAILS.keys())
    elif slug == "js-api":
        raw = {"js-api-list": [list(t) for t in JS_API]}
        detail_keys = []
    else:
        raw = {
            "req-attrs": [list(t) for t in REQUEST_ATTRS],
            "beh-attrs": [list(t) for t in BEHAVIOR_ATTRS],
            "uniq-attrs": [list(t) for t in SX_UNIQUE_ATTRS],
        }
        detail_keys = list(ATTR_DETAILS.keys())

    return build_reference_data(slug, raw, detail_keys)


def _find_spec_file(filename: str) -> str | None:
    """Find a spec .sx file across spec/, web/, shared/sx/ref/ directories."""
    import os
    base = os.path.join(os.path.dirname(__file__), "..", "..")
    search_dirs = [
        os.path.join(base, "spec"),
        os.path.join(base, "web"),
        os.path.join(base, "shared", "sx", "ref"),
        "/app/spec",
        "/app/web",
        "/app/shared/sx/ref",
    ]
    for d in search_dirs:
        path = os.path.join(d, filename)
        if os.path.isfile(path):
            return path
    return None


def _read_spec_file(filename: str) -> str:
    """Read a spec .sx file. Pure I/O — metadata lives in .sx."""
    filepath = _find_spec_file(filename)
    if not filepath:
        return ";; spec file not found: " + filename
    try:
        with open(filepath, encoding="utf-8") as f:
            return f.read()
    except (FileNotFoundError, TypeError):
        return ";; spec file not found: " + filename


# ---------------------------------------------------------------------------
# Spec explorer — translation + cross-reference helpers
# ---------------------------------------------------------------------------

_JS_SX_ENV = None  # cached js.sx evaluator env

def _js_translate_define(expr: list, name: str) -> str | None:
    """Translate a single define expression to JavaScript via js.sx."""
    global _JS_SX_ENV
    if _JS_SX_ENV is None:
        from shared.sx.ref.run_js_sx import load_js_sx
        _JS_SX_ENV = load_js_sx()
    from shared.sx.ref.sx_ref import evaluate
    from shared.sx.types import Symbol
    env = dict(_JS_SX_ENV)
    env["_defines"] = [[name, expr]]
    result = evaluate([Symbol("js-translate-file"), Symbol("_defines")], env)
    if result and isinstance(result, str) and result.strip():
        return result.strip()
    return None


def _z3_translate_define(expr: list) -> str | None:
    """Translate a single define expression to SMT-LIB via z3.sx."""
    from shared.sx.ref.reader_z3 import z3_translate
    result = z3_translate(expr)
    if result and isinstance(result, str) and result.strip():
        return result.strip()
    return None


_SPEC_INDEX: dict[str, str] | None = None  # function name → spec slug

def _build_spec_index() -> dict[str, str]:
    """Build a global index mapping function names to spec file slugs."""
    global _SPEC_INDEX
    if _SPEC_INDEX is not None:
        return _SPEC_INDEX

    import os
    import glob as globmod
    from shared.sx.parser import parse_all
    from shared.sx.types import Symbol, Keyword

    ref_dir = os.path.join(os.path.dirname(__file__), "..", "..", "shared", "sx", "ref")
    if not os.path.isdir(ref_dir):
        ref_dir = "/app/shared/sx/ref"

    index: dict[str, str] = {}
    for fp in globmod.glob(os.path.join(ref_dir, "*.sx")):
        basename = os.path.basename(fp)
        if basename.startswith("test-"):
            continue
        slug = basename.replace(".sx", "")
        try:
            with open(fp, encoding="utf-8") as f:
                content = f.read()
            for expr in parse_all(content):
                if not isinstance(expr, list) or len(expr) < 2:
                    continue
                if not isinstance(expr[0], Symbol):
                    continue
                head = expr[0].name
                if head in ("define", "define-async"):
                    name = expr[1].name if isinstance(expr[1], Symbol) else str(expr[1])
                    index[name] = slug
        except Exception:
            continue

    _SPEC_INDEX = index
    return _SPEC_INDEX


# Test file → spec file mapping
_SPEC_TO_TEST = {
    "signals.sx": "test-signals.sx",
    "eval.sx": "test-eval.sx",
    "parser.sx": "test-parser.sx",
    "render.sx": "test-render.sx",
    "engine.sx": "test-engine.sx",
    "orchestration.sx": "test-orchestration.sx",
    "router.sx": "test-router.sx",
    "deps.sx": "test-deps.sx",
    "adapter-sx.sx": "test-aser.sx",
    "types.sx": "test-types.sx",
}


def _extract_tests_for_spec(filename: str) -> list[dict]:
    """Extract test suites/cases from the corresponding test file."""
    import os
    from shared.sx.parser import parse_all
    from shared.sx.types import Symbol

    test_file = _SPEC_TO_TEST.get(filename)
    if not test_file:
        return []

    ref_dir = os.path.join(os.path.dirname(__file__), "..", "..", "shared", "sx", "ref")
    if not os.path.isdir(ref_dir):
        ref_dir = "/app/shared/sx/ref"
    test_path = os.path.join(ref_dir, test_file)

    try:
        with open(test_path, encoding="utf-8") as f:
            content = f.read()
        exprs = parse_all(content)
    except Exception:
        return []

    tests: list[dict] = []
    for expr in exprs:
        if not isinstance(expr, list) or len(expr) < 3:
            continue
        if not isinstance(expr[0], Symbol):
            continue
        if expr[0].name != "defsuite":
            continue
        suite_name = expr[1] if isinstance(expr[1], str) else str(expr[1])
        test_names = []
        for child in expr[2:]:
            if isinstance(child, list) and len(child) >= 2:
                if isinstance(child[0], Symbol) and child[0].name == "deftest":
                    tname = child[1] if isinstance(child[1], str) else str(child[1])
                    test_names.append(tname)
        tests.append({"suite": suite_name, "tests": test_names})
    return tests


def _match_tests_to_function(fn_name: str, all_tests: list[dict]) -> list[dict]:
    """Match test suites to a function by fuzzy name matching."""
    matched = []
    fn_lower = fn_name.lower().replace("-", " ").replace("!", "").replace("?", "")
    fn_words = set(fn_lower.split())
    for suite in all_tests:
        suite_lower = suite["suite"].lower()
        # Match if function name appears in suite name or suite name contains function
        if fn_lower in suite_lower or any(w in suite_lower for w in fn_words if len(w) > 2):
            matched.append(suite)
    return matched


def _collect_symbols(expr) -> set[str]:
    """Recursively collect all Symbol names referenced in an expression."""
    from shared.sx.types import Symbol
    result: set[str] = set()
    if isinstance(expr, Symbol):
        result.add(expr.name)
    elif isinstance(expr, list):
        for item in expr:
            result |= _collect_symbols(item)
    elif isinstance(expr, dict):
        for v in expr.values():
            result |= _collect_symbols(v)
    return result


_SPEC_SLUG_MAP = {
    "parser": ("parser.sx", "Parser", "Tokenization and parsing"),
    "evaluator": ("evaluator.sx", "Evaluator", "CEK machine evaluator"),
    "primitives": ("primitives.sx", "Primitives", "Built-in pure functions"),
    "render": ("render.sx", "Renderer", "Three rendering modes"),
    "special-forms": ("special-forms.sx", "Special Forms", "Special form dispatch"),
    "signals": ("signals.sx", "Signals", "Fine-grained reactive primitives"),
    "adapter-dom": ("adapter-dom.sx", "DOM Adapter", "Client-side DOM rendering"),
    "adapter-html": ("adapter-html.sx", "HTML Adapter", "Server-side HTML rendering"),
    "adapter-sx": ("adapter-sx.sx", "SX Adapter", "SX wire format serialization"),
    "engine": ("engine.sx", "SxEngine", "Pure logic for the browser engine"),
    "orchestration": ("orchestration.sx", "Orchestration", "Browser lifecycle"),
    "boot": ("boot.sx", "Boot", "Browser initialization"),
    "router": ("router.sx", "Router", "URL parsing and route matching"),
    "boundary": ("boundary.sx", "Boundary", "Language/platform boundary"),
    "continuations": ("continuations.sx", "Continuations", "Delimited continuations"),
    "types": ("types.sx", "Types", "Optional gradual type system"),
}


def _spec_explorer_data_by_slug(slug: str) -> dict | None:
    """Look up spec by slug and return explorer data."""
    entry = _SPEC_SLUG_MAP.get(slug)
    if not entry:
        return None
    filename, title, desc = entry
    return _spec_explorer_data(filename, title, desc)


def _spec_explorer_data(filename: str, title: str = "", desc: str = "") -> dict | None:
    """Parse a spec file into structured metadata for the spec explorer.

    Receives filename/title/desc from the SX routing layer (via find-spec).
    Returns sections with defines, effects, params, source, and translations.
    """
    import os
    import re
    from shared.sx.parser import parse_all
    from shared.sx.types import Symbol, Keyword

    if not filename:
        return None

    # Read the raw source
    filepath = _find_spec_file(filename)
    if not filepath:
        return None
    try:
        with open(filepath, encoding="utf-8") as f:
            source = f.read()
    except FileNotFoundError:
        return None

    lines = source.split("\n")

    # --- 1. Section splitting ---
    sections: list[dict] = []
    current_section: dict | None = None
    i = 0
    while i < len(lines):
        line = lines[i]
        # Detect section dividers: ;; ---...
        if re.match(r"^;; -{10,}", line):
            # Look for title in following comment lines
            title_lines = []
            j = i + 1
            while j < len(lines) and lines[j].startswith(";;"):
                content = lines[j][2:].strip()
                if re.match(r"^-{10,}", content):
                    j += 1
                    break
                if content:
                    title_lines.append(content)
                j += 1
            if title_lines:
                section_title = title_lines[0]
                # Collect comment block after section header
                comment_lines = []
                k = j
                while k < len(lines) and lines[k].startswith(";;"):
                    c = lines[k][2:].strip()
                    if re.match(r"^-{5,}", c) or re.match(r"^={5,}", c):
                        break
                    if c:
                        comment_lines.append(c)
                    k += 1
                current_section = {
                    "title": section_title,
                    "comment": " ".join(comment_lines) if comment_lines else None,
                    "defines": [],
                }
                sections.append(current_section)
            i = j
            continue
        i += 1

    # If no sections found, create a single implicit one
    if not sections:
        current_section = {"title": filename, "comment": None, "defines": []}
        sections.append(current_section)

    # --- 2. Parse AST ---
    try:
        exprs = parse_all(source)
    except Exception:
        exprs = []

    # --- 3. Process each top-level define ---
    # Build a line-number index: find where each top-level form starts
    def _find_source_block(name: str, form: str = "define") -> tuple[str, int]:
        """Find the source text of a define form by scanning raw source."""
        patterns = [
            f"({form} {name} ",
            f"({form} {name}\n",
        ]
        for pat in patterns:
            idx = source.find(pat)
            if idx >= 0:
                # Count balanced parens from idx
                depth = 0
                end = idx
                for ci, ch in enumerate(source[idx:], idx):
                    if ch == "(":
                        depth += 1
                    elif ch == ")":
                        depth -= 1
                        if depth == 0:
                            end = ci + 1
                            break
                line_num = source[:idx].count("\n") + 1
                return source[idx:end], line_num
        return "", 0

    def _extract_effects(expr: list) -> list[str]:
        """Extract :effects [...] from a define form."""
        if len(expr) >= 4 and isinstance(expr[2], Keyword) and expr[2].name == "effects":
            eff_list = expr[3]
            if isinstance(eff_list, list):
                return [s.name if isinstance(s, Symbol) else str(s) for s in eff_list]
        return []

    def _extract_params(expr: list) -> list[dict]:
        """Extract params from the fn/lambda body of a define."""
        # Find the fn/lambda form
        val_expr = expr[4] if (len(expr) >= 5 and isinstance(expr[2], Keyword)
                               and expr[2].name == "effects") else expr[2] if len(expr) >= 3 else None
        if not isinstance(val_expr, list) or not val_expr:
            return []
        if not isinstance(val_expr[0], Symbol):
            return []
        if val_expr[0].name not in ("fn", "lambda"):
            return []
        if len(val_expr) < 2 or not isinstance(val_expr[1], list):
            return []
        params_list = val_expr[1]
        result = []
        i = 0
        while i < len(params_list):
            p = params_list[i]
            if isinstance(p, Symbol) and p.name in ("&rest", "&key"):
                result.append({"name": p.name, "type": None})
                i += 1
                continue
            if isinstance(p, Symbol):
                result.append({"name": p.name, "type": None})
            elif isinstance(p, list) and len(p) == 3:
                # (name :as type)
                name_s, kw, type_s = p
                if isinstance(name_s, Symbol) and isinstance(kw, Keyword) and kw.name == "as":
                    type_str = type_s.name if isinstance(type_s, Symbol) else str(type_s)
                    result.append({"name": name_s.name, "type": type_str})
                else:
                    result.append({"name": str(p), "type": None})
            else:
                result.append({"name": str(p), "type": None})
            i += 1
        return result

    # Process defines
    all_defines: list[dict] = []
    py_emitter = None

    for expr in exprs:
        if not isinstance(expr, list) or len(expr) < 2:
            continue
        if not isinstance(expr[0], Symbol):
            continue

        head = expr[0].name
        if head not in ("define", "define-async"):
            continue

        name_node = expr[1]
        name = name_node.name if isinstance(name_node, Symbol) else str(name_node)

        effects = _extract_effects(expr)
        params = _extract_params(expr)
        src, line_num = _find_source_block(name, head)

        kind = "function"
        # Check if it's a constant (no fn/lambda body)
        val_idx = 4 if (len(expr) >= 5 and isinstance(expr[2], Keyword)
                        and expr[2].name == "effects") else 2
        if val_idx < len(expr):
            val = expr[val_idx]
            if isinstance(val, list) and val and isinstance(val[0], Symbol) and val[0].name in ("fn", "lambda"):
                kind = "async-function" if head == "define-async" else "function"
            else:
                kind = "constant"
        if head == "define-async":
            kind = "async-function"

        # --- Python translation ---
        py_code = None
        try:
            if py_emitter is None:
                from shared.sx.ref.bootstrap_py import PyEmitter
                py_emitter = PyEmitter()
            if head == "define-async":
                py_code = py_emitter._emit_define_async(expr)
            else:
                py_code = py_emitter._emit_define(expr)
        except Exception:
            pass

        # --- JavaScript translation ---
        js_code = None
        try:
            js_code = _js_translate_define(expr, name)
        except Exception:
            pass

        # --- Z3/SMT-LIB translation ---
        z3_code = None
        try:
            z3_code = _z3_translate_define(expr)
        except Exception:
            pass

        # --- Cross-references ---
        refs = []
        platform_deps = []
        try:
            spec_index = _build_spec_index()
            body_symbols = _collect_symbols(expr)
            own_names = {name}
            for sym in body_symbols - own_names:
                if sym in spec_index:
                    refs.append(sym)
                # Symbols not in any spec file might be platform primitives
        except Exception:
            pass

        define_entry = {
            "name": name,
            "kind": kind,
            "effects": effects,
            "params": params,
            "source": src,
            "line": line_num,
            "python": py_code,
            "javascript": js_code,
            "z3": z3_code,
            "refs": refs,
            "tests": [],
            "test-count": 0,
        }
        all_defines.append(define_entry)

    # --- Assign defines to sections ---
    # Match by line number: each define belongs to the section whose header
    # precedes it in the source
    section_line_map: list[tuple[int, dict]] = []
    for s in sections:
        # Find the line where section title appears
        t = s["title"]
        for li, line in enumerate(lines, 1):
            if t in line:
                section_line_map.append((li, s))
                break
    section_line_map.sort(key=lambda x: x[0])

    for d in all_defines:
        dl = d.get("line", 0)
        target_section = sections[0]
        for sl, s in section_line_map:
            if dl >= sl:
                target_section = s
        target_section["defines"].append(d)

    # --- Test matching ---
    all_tests = _extract_tests_for_spec(filename)
    test_total = 0
    for d in all_defines:
        matched = _match_tests_to_function(d["name"], all_tests)
        if matched:
            test_names = []
            for suite in matched:
                for t in suite["tests"]:
                    test_names.append({"name": t, "suite": suite["suite"]})
            d["tests"] = test_names
            d["test-count"] = len(test_names)
            test_total += len(test_names)

    # --- Stats ---
    pure_count = sum(1 for d in all_defines if not d["effects"])
    mutation_count = sum(1 for d in all_defines if "mutation" in d["effects"])
    io_count = sum(1 for d in all_defines if "io" in d["effects"])
    render_count = sum(1 for d in all_defines if "render" in d["effects"])

    # --- Platform interface ---
    platform_items = []
    for line in lines:
        m = re.match(r"^;;\s+\((\S+)\s+(.*?)\)\s+→\s+(\S+)\s+—\s+(.+)", line)
        if m:
            platform_items.append({
                "name": m.group(1),
                "params": m.group(2),
                "returns": m.group(3),
                "doc": m.group(4).strip(),
            })

    # Filter out empty sections
    sections = [s for s in sections if s["defines"]]

    return {
        "filename": filename,
        "title": title,
        "desc": desc,
        "sections": sections,
        "platform-interface": platform_items,
        "stats": {
            "total-defines": len(all_defines),
            "pure-count": pure_count,
            "mutation-count": mutation_count,
            "io-count": io_count,
            "render-count": render_count,
            "lines": len(lines),
            "test-total": test_total,
        },
    }


def _bootstrapper_data(target: str) -> dict:
    """Return bootstrapper source and generated output for a target.

    Returns a dict whose keys become SX env bindings:
    - bootstrapper-source: the Python bootstrapper source code
    - bootstrapped-output: the generated JavaScript
    - bootstrapper-not-found: truthy if target unknown
    """
    import os

    if target not in ("javascript", "python", "self-hosting", "self-hosting-js"):
        return {"bootstrapper-not-found": True}

    ref_dir = os.path.join(os.path.dirname(__file__), "..", "..", "shared", "sx", "ref")
    if not os.path.isdir(ref_dir):
        ref_dir = "/app/shared/sx/ref"

    if target == "self-hosting":
        return _self_hosting_data(ref_dir)
    if target == "self-hosting-js":
        return _js_self_hosting_data(ref_dir)

    if target == "javascript":
        # Read bootstrapper source
        bs_path = os.path.join(ref_dir, "bootstrap_js.py")
        try:
            with open(bs_path, encoding="utf-8") as f:
                bootstrapper_source = f.read()
        except FileNotFoundError:
            bootstrapper_source = "# bootstrapper source not found"

        # Run the bootstrap to generate JS
        from shared.sx.ref.bootstrap_js import compile_ref_to_js
        try:
            bootstrapped_output = compile_ref_to_js(
                adapters=["dom", "engine", "orchestration", "boot", "cssx"]
            )
        except Exception as e:
            bootstrapped_output = f"// bootstrap error: {e}"

    elif target == "python":
        bs_path = os.path.join(ref_dir, "bootstrap_py.py")
        try:
            with open(bs_path, encoding="utf-8") as f:
                bootstrapper_source = f.read()
        except FileNotFoundError:
            bootstrapper_source = "# bootstrapper source not found"

        from shared.sx.ref.bootstrap_py import compile_ref_to_py
        try:
            bootstrapped_output = compile_ref_to_py()
        except Exception as e:
            bootstrapped_output = f"# bootstrap error: {e}"

    return {
        "bootstrapper-not-found": None,
        "bootstrapper-source": bootstrapper_source,
        "bootstrapped-output": bootstrapped_output,
    }


def _self_hosting_data(ref_dir: str) -> dict:
    """Run py.sx live: load into evaluator, translate spec files, diff against G0."""
    import os
    from shared.sx.parser import parse_all
    from shared.sx.types import Symbol
    from shared.sx.ref.sx_ref import evaluate, make_env
    from shared.sx.ref.bootstrap_py import extract_defines, compile_ref_to_py, PyEmitter

    try:
        # Read py.sx source
        py_sx_path = os.path.join(ref_dir, "py.sx")
        with open(py_sx_path, encoding="utf-8") as f:
            py_sx_source = f.read()

        # Load py.sx into evaluator
        exprs = parse_all(py_sx_source)
        env = make_env()
        for expr in exprs:
            evaluate(expr, env)

        # Generate G0 (hand-written bootstrapper)
        g0_output = compile_ref_to_py()

        # Generate G1 (py.sx) — translate each spec file
        sx_files = [
            ("eval.sx", "eval"), ("forms.sx", "forms (server definition forms)"),
            ("render.sx", "render (core)"),
            ("adapter-html.sx", "adapter-html"), ("adapter-sx.sx", "adapter-sx"),
            ("deps.sx", "deps (component dependency analysis)"),
            ("signals.sx", "signals (reactive signal runtime)"),
        ]
        emitter = PyEmitter()
        total = 0
        matched = 0
        for filename, _label in sx_files:
            filepath = os.path.join(ref_dir, filename)
            if not os.path.exists(filepath):
                continue
            with open(filepath, encoding="utf-8") as f:
                src = f.read()
            defines = extract_defines(src)
            for name, expr in defines:
                g0_stmt = emitter.emit_statement(expr)
                g1_stmt = evaluate(
                    [Symbol("py-statement"), [Symbol("quote"), expr], 0], env
                )
                total += 1
                if g0_stmt == g1_stmt:
                    matched += 1

        g0_lines = len(g0_output.splitlines())
        g0_bytes = len(g0_output)
        status = "identical" if matched == total else "mismatch"

    except Exception as e:
        py_sx_source = f";; error loading py.sx: {e}"
        g0_output = f"# error: {e}"
        matched, total = 0, 0
        g0_lines, g0_bytes = 0, 0
        status = "error"

    return {
        "bootstrapper-not-found": None,
        "py-sx-source": py_sx_source,
        "g0-output": g0_output,
        "g1-output": g0_output if status == "identical" else "# differs from G0",
        "defines-matched": str(matched),
        "defines-total": str(total),
        "g0-lines": str(g0_lines),
        "g0-bytes": str(g0_bytes),
        "verification-status": status,
    }


def _js_self_hosting_data(ref_dir: str) -> dict:
    """Run js.sx live: load into evaluator, translate all spec defines."""
    import os
    from shared.sx.types import Symbol
    from shared.sx.ref.sx_ref import evaluate
    from shared.sx.ref.run_js_sx import load_js_sx
    from shared.sx.ref.platform_js import extract_defines

    try:
        js_sx_path = os.path.join(ref_dir, "js.sx")
        with open(js_sx_path, encoding="utf-8") as f:
            js_sx_source = f.read()

        env = load_js_sx()

        # All spec files
        all_files = sorted(
            f for f in os.listdir(ref_dir) if f.endswith(".sx")
        )
        total = 0
        for filename in all_files:
            filepath = os.path.join(ref_dir, filename)
            with open(filepath, encoding="utf-8") as f:
                src = f.read()
            defines = extract_defines(src)
            for name, expr in defines:
                env["_def_expr"] = expr
                evaluate(
                    [Symbol("js-statement"), Symbol("_def_expr")], env
                )
                total += 1

        status = "ok"

    except Exception as e:
        js_sx_source = f";; error loading js.sx: {e}"
        total = 0
        status = "error"

    return {
        "bootstrapper-not-found": None,
        "js-sx-source": js_sx_source,
        "defines-matched": str(total),
        "defines-total": str(total),
        "js-sx-lines": str(len(js_sx_source.splitlines())),
        "verification-status": status,
    }


def _bundle_analyzer_data() -> dict:
    """Compute per-page component bundle analysis for the sx-docs app."""
    from shared.sx.jinja_bridge import get_component_env
    from shared.sx.pages import get_all_pages
    from shared.sx.deps import components_needed, scan_components_from_sx
    from shared.sx.parser import serialize
    from shared.sx.types import Component, Macro
    from shared.sx.ref.sx_ref import build_bundle_analysis

    env = get_component_env()
    total_components = sum(1 for v in env.values() if isinstance(v, Component))
    total_macros = sum(1 for v in env.values() if isinstance(v, Macro))
    pure_count = sum(1 for v in env.values() if isinstance(v, Component) and v.is_pure)
    io_count = total_components - pure_count

    # Extract raw data at I/O edge — Python accesses Component objects, serializes bodies
    pages_raw = []
    components_raw: dict[str, dict] = {}
    for name, page_def in sorted(get_all_pages("sx").items()):
        content_sx = serialize(page_def.content_expr)
        direct = scan_components_from_sx(content_sx)
        needed = sorted(components_needed(content_sx, env))

        for comp_name in needed:
            if comp_name not in components_raw:
                val = env.get(comp_name)
                if isinstance(val, Component):
                    param_strs = ["&key"] + list(val.params)
                    if val.has_children:
                        param_strs.extend(["&rest", "children"])
                    params_sx = "(" + " ".join(param_strs) + ")"
                    body_sx = serialize(val.body, pretty=True)
                    components_raw[comp_name] = {
                        "is-pure": val.is_pure,
                        "affinity": val.affinity,
                        "render-target": val.render_target,
                        "io-refs": sorted(val.io_refs),
                        "deps": sorted(val.deps),
                        "source": f"(defcomp ~{val.name} {params_sx}\n  {body_sx})",
                    }

        pages_raw.append({
            "name": name,
            "path": page_def.path,
            "direct": len(direct),
            "needed-names": needed,
        })

    # Pure data transformation in SX spec
    result = build_bundle_analysis(
        pages_raw, components_raw,
        total_components, total_macros, pure_count, io_count,
    )
    # Sort pages by needed count (descending) — SX has no sort primitive
    result["pages"] = sorted(result["pages"], key=lambda p: p["needed"], reverse=True)
    return result


def _routing_analyzer_data() -> dict:
    """Compute per-page routing classification for the sx-docs app."""
    from shared.sx.pages import get_all_pages
    from shared.sx.parser import serialize as sx_serialize
    from shared.sx.helpers import _sx_literal
    from shared.sx.ref.sx_ref import build_routing_analysis

    # I/O edge: extract page data from page registry
    pages_raw = []
    full_content: list[tuple[str, str, bool]] = []
    for name, page_def in sorted(get_all_pages("sx").items()):
        has_data = page_def.data_expr is not None
        content_src = ""
        if page_def.content_expr is not None:
            try:
                content_src = sx_serialize(page_def.content_expr)
            except Exception:
                pass
        pages_raw.append({
            "name": name, "path": page_def.path,
            "has-data": has_data, "content-src": content_src,
        })
        full_content.append((name, content_src, has_data))

    # Pure classification in SX spec
    result = build_routing_analysis(pages_raw)
    # Sort: client pages first, then server (SX has no sort primitive)
    result["pages"] = sorted(
        result["pages"],
        key=lambda p: (0 if p["mode"] == "client" else 1, p["name"]),
    )

    # Build registry sample (uses _sx_literal which is Python string escaping)
    sample_entries = []
    sorted_full = sorted(full_content, key=lambda x: x[0])
    for name, csrc, hd in sorted_full[:3]:
        page_def = get_all_pages("sx").get(name)
        if not page_def:
            continue
        entry = (
            "{:name " + _sx_literal(name)
            + "\n :path " + _sx_literal(page_def.path)
            + "\n :auth " + _sx_literal("public")
            + " :has-data " + ("true" if hd else "false")
            + "\n :content " + _sx_literal(csrc)
            + "\n :closure {}}"
        )
        sample_entries.append(entry)
    result["registry-sample"] = "\n\n".join(sample_entries)

    return result


def _attr_detail_data(slug: str) -> dict:
    """Return attribute detail data for a specific attribute slug."""
    from content.pages import ATTR_DETAILS
    from shared.sx.helpers import sx_call
    from shared.sx.ref.sx_ref import build_attr_detail

    detail = ATTR_DETAILS.get(slug)
    result = build_attr_detail(slug, detail)
    # Convert demo name to sx_call if present
    demo_name = result.get("attr-demo")
    if demo_name:
        result["attr-demo"] = sx_call(demo_name)
    return result


def _header_detail_data(slug: str) -> dict:
    """Return header detail data for a specific header slug."""
    from content.pages import HEADER_DETAILS
    from shared.sx.helpers import sx_call
    from shared.sx.ref.sx_ref import build_header_detail

    result = build_header_detail(slug, HEADER_DETAILS.get(slug))
    demo_name = result.get("header-demo")
    if demo_name:
        result["header-demo"] = sx_call(demo_name)
    return result


def _event_detail_data(slug: str) -> dict:
    """Return event detail data for a specific event slug."""
    from content.pages import EVENT_DETAILS
    from shared.sx.helpers import sx_call
    from shared.sx.ref.sx_ref import build_event_detail

    result = build_event_detail(slug, EVENT_DETAILS.get(slug))
    demo_name = result.get("event-demo")
    if demo_name:
        result["event-demo"] = sx_call(demo_name)
    return result


def _run_spec_tests() -> dict:
    """Run test.sx against the Python SX evaluator and return results."""
    import os
    import time
    from shared.sx.parser import parse_all
    from shared.sx.ref.sx_ref import eval_expr as _eval, trampoline as _trampoline

    ref_dir = os.path.join(os.path.dirname(__file__), "..", "..", "shared", "sx", "ref")
    if not os.path.isdir(ref_dir):
        ref_dir = "/app/shared/sx/ref"
    test_path = os.path.join(ref_dir, "test.sx")
    with open(test_path, encoding="utf-8") as f:
        src = f.read()

    suite_stack: list[str] = []
    passed = 0
    failed = 0
    test_num = 0
    lines: list[str] = []

    def try_call(thunk):
        try:
            _trampoline(_eval([thunk], {}))
            return {"ok": True}
        except Exception as e:
            return {"ok": False, "error": str(e)}

    def report_pass(name):
        nonlocal passed, test_num
        test_num += 1
        passed += 1
        lines.append("ok " + str(test_num) + " - " + " > ".join(suite_stack + [name]))

    def report_fail(name, error):
        nonlocal failed, test_num
        test_num += 1
        failed += 1
        full = " > ".join(suite_stack + [name])
        lines.append("not ok " + str(test_num) + " - " + full)
        lines.append("  # " + str(error))

    def push_suite(name):
        suite_stack.append(name)

    def pop_suite():
        suite_stack.pop()

    env = {
        "try-call": try_call,
        "report-pass": report_pass,
        "report-fail": report_fail,
        "push-suite": push_suite,
        "pop-suite": pop_suite,
    }

    t0 = time.monotonic()
    exprs = parse_all(src)
    for expr in exprs:
        _trampoline(_eval(expr, env))
    elapsed = round((time.monotonic() - t0) * 1000)

    return {
        "passed": passed,
        "failed": failed,
        "total": passed + failed,
        "elapsed-ms": elapsed,
        "output": "\n".join(lines),
    }


def _run_modular_tests(spec_name: str) -> dict:
    """Run modular test specs against the Python SX evaluator.

    spec_name: "eval", "parser", "router", "render", or "all".
    Returns dict with server-results key containing results per spec.
    """
    import os
    import time
    from shared.sx.parser import parse_all
    from shared.sx.ref.sx_ref import eval_expr as _eval, trampoline as _trampoline
    from shared.sx.types import Symbol, Keyword, Lambda, NIL

    ref_dir = os.path.join(os.path.dirname(__file__), "..", "..", "shared", "sx", "ref")
    if not os.path.isdir(ref_dir):
        ref_dir = "/app/shared/sx/ref"

    suite_stack: list[str] = []
    passed = 0
    failed = 0
    test_num = 0
    lines: list[str] = []

    def try_call(thunk):
        try:
            _trampoline(_eval([thunk], env))
            return {"ok": True}
        except Exception as e:
            return {"ok": False, "error": str(e)}

    def report_pass(name):
        nonlocal passed, test_num
        test_num += 1
        passed += 1
        lines.append("ok " + str(test_num) + " - " + " > ".join(suite_stack + [name]))

    def report_fail(name, error):
        nonlocal failed, test_num
        test_num += 1
        failed += 1
        full = " > ".join(suite_stack + [name])
        lines.append("not ok " + str(test_num) + " - " + full)
        lines.append("  # " + str(error))

    def push_suite(name):
        suite_stack.append(name)

    def pop_suite():
        suite_stack.pop()

    def sx_parse(source):
        return parse_all(source)

    def sx_serialize(val):
        if val is None or val is NIL:
            return "nil"
        if isinstance(val, bool):
            return "true" if val else "false"
        if isinstance(val, (int, float)):
            return str(val)
        if isinstance(val, str):
            escaped = val.replace("\\", "\\\\").replace('"', '\\"')
            return f'"{escaped}"'
        if isinstance(val, Symbol):
            return val.name
        if isinstance(val, Keyword):
            return f":{val.name}"
        if isinstance(val, list):
            inner = " ".join(sx_serialize(x) for x in val)
            return f"({inner})"
        if isinstance(val, dict):
            parts = []
            for k, v in val.items():
                parts.append(f":{k}")
                parts.append(sx_serialize(v))
            return "{" + " ".join(parts) + "}"
        return str(val)

    def render_html(sx_source):
        try:
            from shared.sx.ref.sx_ref import render_to_html as _render_to_html
        except ImportError:
            return "<!-- render-to-html not available -->"
        exprs = parse_all(sx_source)
        render_env = dict(env)
        result = ""
        for expr in exprs:
            result += _render_to_html(expr, render_env)
        return result

    def _call_sx(fn, args, caller_env):
        if isinstance(fn, Lambda):
            from shared.sx.ref.sx_ref import call_lambda as _call_lambda
            return _trampoline(_call_lambda(fn, list(args), caller_env))
        return fn(*args)

    def _for_each_indexed(fn, coll):
        if isinstance(fn, Lambda):
            closure = fn.closure
            for i, item in enumerate(coll or []):
                for p, v in zip(fn.params, [i, item]):
                    closure[p] = v
                _trampoline(_eval(fn.body, closure))
        else:
            for i, item in enumerate(coll or []):
                fn(i, item)
        return NIL

    env = {
        "try-call": try_call,
        "report-pass": report_pass,
        "report-fail": report_fail,
        "push-suite": push_suite,
        "pop-suite": pop_suite,
        "sx-parse": sx_parse,
        "sx-serialize": sx_serialize,
        "make-symbol": lambda name: Symbol(name),
        "make-keyword": lambda name: Keyword(name),
        "symbol-name": lambda sym: sym.name if isinstance(sym, Symbol) else str(sym),
        "keyword-name": lambda kw: kw.name if isinstance(kw, Keyword) else str(kw),
        "render-html": render_html,
        "for-each-indexed": _for_each_indexed,
        "dict-set!": lambda d, k, v: (d.__setitem__(k, v), NIL)[-1] if isinstance(d, dict) else NIL,
        "dict-has?": lambda d, k: isinstance(d, dict) and k in d,
        "dict-get": lambda d, k: d.get(k, NIL) if isinstance(d, dict) else NIL,
        "append!": lambda lst, item: (lst.append(item), NIL)[-1] if isinstance(lst, list) else NIL,
        "inc": lambda n: n + 1,
    }

    def eval_file(filename):
        filepath = os.path.join(ref_dir, filename)
        if not os.path.exists(filepath):
            return
        with open(filepath) as f:
            src = f.read()
        exprs = parse_all(src)
        for expr in exprs:
            _trampoline(_eval(expr, env))

    SPECS = {
        "eval": {"file": "test-eval.sx", "needs": []},
        "parser": {"file": "test-parser.sx", "needs": ["sx-parse"]},
        "router": {"file": "test-router.sx", "needs": []},
        "render": {"file": "test-render.sx", "needs": ["render-html"]},
        "deps": {"file": "test-deps.sx", "needs": []},
        "engine": {"file": "test-engine.sx", "needs": []},
        "orchestration": {"file": "test-orchestration.sx", "needs": []},
    }

    specs_to_run = list(SPECS.keys()) if spec_name == "all" else [spec_name]

    t0 = time.monotonic()

    # Load framework
    eval_file("test-framework.sx")

    for sn in specs_to_run:
        spec = SPECS.get(sn)
        if not spec:
            continue

        # Load module functions from bootstrap
        if sn == "router":
            try:
                from shared.sx.ref.sx_ref import (
                    split_path_segments,
                    parse_route_pattern,
                    match_route_segments,
                    match_route,
                    find_matching_route,
                    make_route_segment,
                )
                env["split-path-segments"] = split_path_segments
                env["parse-route-pattern"] = parse_route_pattern
                env["match-route-segments"] = match_route_segments
                env["match-route"] = match_route
                env["find-matching-route"] = find_matching_route
                env["make-route-segment"] = make_route_segment
            except ImportError:
                eval_file("router.sx")
        elif sn == "deps":
            try:
                from shared.sx.ref.sx_ref import (
                    scan_refs, scan_components_from_source,
                    transitive_deps, compute_all_deps,
                    components_needed, page_component_bundle,
                    page_css_classes, scan_io_refs,
                    transitive_io_refs, compute_all_io_refs,
                    component_pure_p,
                )
                env["scan-refs"] = scan_refs
                env["scan-components-from-source"] = scan_components_from_source
                env["transitive-deps"] = transitive_deps
                env["compute-all-deps"] = compute_all_deps
                env["components-needed"] = components_needed
                env["page-component-bundle"] = page_component_bundle
                env["page-css-classes"] = page_css_classes
                env["scan-io-refs"] = scan_io_refs
                env["transitive-io-refs"] = transitive_io_refs
                env["compute-all-io-refs"] = compute_all_io_refs
                env["component-pure?"] = component_pure_p
                env["test-env"] = lambda: env
            except ImportError:
                eval_file("deps.sx")
                env["test-env"] = lambda: env
        elif sn == "engine":
            try:
                from shared.sx.ref.sx_ref import (
                    parse_time, parse_trigger_spec, default_trigger,
                    parse_swap_spec, parse_retry_spec, filter_params,
                )
                env["parse-time"] = parse_time
                env["parse-trigger-spec"] = parse_trigger_spec
                env["default-trigger"] = default_trigger
                env["parse-swap-spec"] = parse_swap_spec
                env["parse-retry-spec"] = parse_retry_spec
                env["next-retry-ms"] = lambda cur, cap: min(cur * 2, cap)
                env["filter-params"] = filter_params
            except ImportError:
                eval_file("engine.sx")
        elif sn == "orchestration":
            # Mock platform functions for orchestration tests
            _mock_ts = [1000]
            env["now-ms"] = lambda: _mock_ts[0]
            env["log-info"] = lambda *_a: NIL
            env["log-warn"] = lambda *_a: NIL
            env["execute-action"] = lambda act, pay, ok_cb, _err: (ok_cb(pay), NIL)[-1]
            env["try-rerender-page"] = lambda *_a: NIL
            env["persist-offline-data"] = lambda *_a: NIL
            env["retrieve-offline-data"] = lambda: NIL
            env["dict-delete!"] = lambda d, k: (d.pop(k, None), NIL)[-1] if isinstance(d, dict) else NIL
            # DOM/browser stubs (never called by tests)
            _noop = lambda *_a: NIL
            for stub in [
                "try-parse-json", "dom-dispatch", "dom-query-selector",
                "dom-get-attribute", "dom-set-attribute", "dom-set-text-content",
                "dom-append", "dom-insert-html-adjacent", "dom-remove",
                "dom-outer-html", "dom-inner-html", "dom-create-element",
                "dom-set-inner-html", "dom-morph", "dom-get-tag",
                "dom-query-selector-all", "dom-add-event-listener",
                "dom-set-timeout", "dom-prevent-default", "dom-closest",
                "dom-matches", "dom-get-id", "dom-set-id", "dom-form-data",
                "dom-is-form", "browser-location-href", "browser-push-state",
                "browser-replace-state", "sx-hydrate-elements", "render-to-dom",
                "hoist-head-elements-full", "url-pathname",
            ]:
                if stub not in env:
                    env[stub] = _noop
            # Load engine (orchestration depends on it)
            try:
                from shared.sx.ref.sx_ref import (
                    parse_time, parse_trigger_spec, default_trigger,
                    parse_swap_spec, parse_retry_spec, filter_params,
                )
                env["parse-time"] = parse_time
                env["parse-trigger-spec"] = parse_trigger_spec
                env["default-trigger"] = default_trigger
                env["parse-swap-spec"] = parse_swap_spec
                env["parse-retry-spec"] = parse_retry_spec
                env["next-retry-ms"] = lambda cur, cap: min(cur * 2, cap)
                env["filter-params"] = filter_params
            except ImportError:
                eval_file("engine.sx")
            eval_file("orchestration.sx")

        eval_file(spec["file"])

    elapsed = round((time.monotonic() - t0) * 1000)

    result = {
        "server-results": {
            "passed": passed,
            "failed": failed,
            "total": passed + failed,
            "elapsed-ms": elapsed,
            "output": "\n".join(lines),
            "spec": spec_name,
        },
        "framework-source": _read_spec_file("test-framework.sx"),
    }

    # Include spec sources so :content can reference them from data
    if spec_name == "all":
        result["eval-source"] = _read_spec_file("test-eval.sx")
        result["parser-source"] = _read_spec_file("test-parser.sx")
        result["router-source"] = _read_spec_file("test-router.sx")
        result["render-source"] = _read_spec_file("test-render.sx")
        result["deps-source"] = _read_spec_file("test-deps.sx")
        result["engine-source"] = _read_spec_file("test-engine.sx")
    else:
        spec = SPECS.get(spec_name)
        if spec:
            result["spec-source"] = _read_spec_file(spec["file"])

    return result


def _data_test_data() -> dict:
    """Return test data for the client-side data rendering test page.

    This exercises the Phase 4 data endpoint: server evaluates this
    helper, serializes the result as SX, the client fetches and parses
    it, then renders the page content with these bindings.
    """
    from datetime import datetime, timezone

    return {
        "server-time": datetime.now(timezone.utc).isoformat(timespec="seconds"),
        "items": [
            {"label": "Eval", "detail": "Server evaluates :data expression"},
            {"label": "Serialize", "detail": "Result serialized as SX wire format"},
            {"label": "Fetch", "detail": "Client calls resolve-page-data"},
            {"label": "Parse", "detail": "Client parses SX response to dict"},
            {"label": "Render", "detail": "Client merges data into env, renders content"},
        ],
        "phase": "Phase 4 — Client Async & IO Bridge",
        "transport": "SX wire format (text/sx)",
    }


async def _streaming_demo_data():
    """Multi-stream demo — yields three chunks at staggered intervals.

    Each yield is a dict with _stream_id (matching a ~shared:pages/suspense :id in the
    shell) plus bindings for the :content expression. The streaming
    infrastructure detects the async generator and resolves each suspense
    placeholder as each chunk arrives.
    """
    import asyncio
    from datetime import datetime, timezone

    await asyncio.sleep(1)
    yield {
        "stream-id": "stream-fast",
        "stream-label": "Fast API",
        "stream-color": "green",
        "stream-message": "Responded in ~1 second",
        "stream-time": datetime.now(timezone.utc).isoformat(timespec="seconds"),
    }

    await asyncio.sleep(2)  # 3s total
    yield {
        "stream-id": "stream-medium",
        "stream-label": "Database Query",
        "stream-color": "blue",
        "stream-message": "Query completed in ~3 seconds",
        "stream-time": datetime.now(timezone.utc).isoformat(timespec="seconds"),
    }

    await asyncio.sleep(2)  # 5s total
    yield {
        "stream-id": "stream-slow",
        "stream-label": "ML Inference",
        "stream-color": "amber",
        "stream-message": "Model inference completed in ~5 seconds",
        "stream-time": datetime.now(timezone.utc).isoformat(timespec="seconds"),
    }


def _affinity_demo_data() -> dict:
    """Return affinity analysis for the demo components + page render plans."""
    from shared.sx.jinja_bridge import get_component_env
    from shared.sx.types import Component
    from shared.sx.pages import get_all_pages
    from shared.sx.ref.sx_ref import build_affinity_analysis

    # I/O edge: extract component data and page render plans
    env = get_component_env()
    demo_names = [
        "~affinity-demo/aff-demo-auto", "~affinity-demo/aff-demo-client", "~affinity-demo/aff-demo-server",
        "~affinity-demo/aff-demo-io-auto", "~affinity-demo/aff-demo-io-client",
    ]
    components = []
    for name in demo_names:
        val = env.get(name)
        if isinstance(val, Component):
            components.append({
                "name": name, "affinity": val.affinity,
                "render-target": val.render_target,
                "io-refs": sorted(val.io_refs), "is-pure": val.is_pure,
            })

    page_plans = []
    for page_def in get_all_pages("sx").values():
        plan = page_def.render_plan
        if plan:
            page_plans.append({
                "name": page_def.name, "path": page_def.path,
                "server-count": len(plan.get("server", [])),
                "client-count": len(plan.get("client", [])),
                "server": plan.get("server", []),
                "client": plan.get("client", []),
                "io-deps": plan.get("io-deps", []),
            })

    return build_affinity_analysis(components, page_plans)


def _optimistic_demo_data() -> dict:
    """Return demo data for the optimistic update test page."""
    from datetime import datetime, timezone

    return {
        "items": [
            {"id": 1, "label": "First item", "status": "confirmed"},
            {"id": 2, "label": "Second item", "status": "confirmed"},
            {"id": 3, "label": "Third item", "status": "confirmed"},
        ],
        "server-time": datetime.now(timezone.utc).isoformat(timespec="seconds"),
    }


def _add_demo_item(**kwargs) -> dict:
    """Action: add a demo item. Returns confirmation with new item."""
    from datetime import datetime, timezone
    import random

    label = kwargs.get("label", "Untitled")
    return {
        "id": random.randint(100, 9999),
        "label": label,
        "status": "confirmed",
        "added-at": datetime.now(timezone.utc).isoformat(timespec="seconds"),
    }


def _prove_data() -> dict:
    """Run prove.sx against the SX spec — both phases.

    Phase 1: Translate all define-* forms via z3.sx, verify satisfiability.
    Phase 2: Evaluate algebraic properties via bounded model checking.
    Returns results for the docs page to render.
    """
    import time
    from shared.sx.parser import parse_all
    from shared.sx.ref.sx_ref import evaluate
    from shared.sx.primitives import all_primitives
    from shared.sx.ref.sx_ref import trampoline as _trampoline, call_lambda as _call_lambda

    env = all_primitives()

    ref_dir = _ref_dir()
    for lib in ("z3.sx", "prove.sx"):
        path = __import__("os").path.join(ref_dir, lib)
        with open(path, encoding="utf-8") as f:
            for expr in parse_all(f.read()):
                evaluate(expr, env)

    # Phase 1: definitional satisfiability
    with open(__import__("os").path.join(ref_dir, "primitives.sx"), encoding="utf-8") as f:
        prim_exprs = parse_all(f.read())

    t0 = time.monotonic()
    phase1 = _trampoline(_call_lambda(env["prove-file"], [prim_exprs], env))
    phase1_ms = round((time.monotonic() - t0) * 1000)

    # Phase 2: property-based constraint solving
    t1 = time.monotonic()
    phase2 = _trampoline(_call_lambda(env["prove-all-properties"], [], env))
    phase2_ms = round((time.monotonic() - t1) * 1000)

    # Flatten Phase 1 results for rendering
    phase1_results = []
    for r in phase1.get("results", []):
        phase1_results.append({
            "name": r.get("name", "?"),
            "status": r.get("status", "?"),
        })

    # Flatten Phase 2 results for rendering
    phase2_results = []
    total_tested = 0
    for r in phase2.get("results", []):
        tested = r.get("tested", 0)
        skipped = r.get("skipped", 0)
        total_tested += tested
        entry = {
            "name": r.get("name", "?"),
            "status": r.get("status", "?"),
            "tested": tested,
            "skipped": skipped,
        }
        ce = r.get("counterexample")
        if ce:
            entry["counterexample"] = str(ce)
        phase2_results.append(entry)

    # Generate SMT-LIB sample for a few properties
    props = env["sx-properties"]
    smtlib_samples = []
    for p in props[:3]:
        smt = _trampoline(_call_lambda(env["prove-property-smtlib"], [p], env))
        smtlib_samples.append(smt)
    # One with precondition
    for p in props:
        if p.get("given-expr"):
            smt = _trampoline(_call_lambda(env["prove-property-smtlib"], [p], env))
            smtlib_samples.append(smt)
            break

    return {
        "phase1-total": phase1.get("total", 0),
        "phase1-sat": phase1.get("sat", 0),
        "phase1-all-sat": phase1.get("all-sat", False),
        "phase1-ms": phase1_ms,
        "phase1-results": phase1_results,
        "phase2-total": phase2.get("total", 0),
        "phase2-verified": phase2.get("verified", 0),
        "phase2-falsified": phase2.get("falsified", 0),
        "phase2-all-verified": phase2.get("all-verified", False),
        "phase2-ms": phase2_ms,
        "phase2-results": phase2_results,
        "phase2-total-tested": total_tested,
        "smtlib-sample": "\n".join(smtlib_samples),
        "prove-source": _read_spec_file("prove.sx"),
        "z3-source": _read_spec_file("z3.sx"),
    }


def _ref_dir() -> str:
    """Return the path to the SX ref directory."""
    import os
    # Same resolution as _read_spec_file
    ref_dir = os.path.join(os.path.dirname(__file__), "..", "..", "shared", "sx", "ref")
    if not os.path.isdir(ref_dir):
        ref_dir = "/app/shared/sx/ref"
    return ref_dir


def _offline_demo_data() -> dict:
    """Return demo data for the offline data layer test page."""
    from datetime import datetime, timezone

    return {
        "notes": [
            {"id": 1, "text": "First note", "created": "2026-03-08T10:00:00Z"},
            {"id": 2, "text": "Second note", "created": "2026-03-08T11:30:00Z"},
            {"id": 3, "text": "Third note", "created": "2026-03-08T14:15:00Z"},
        ],
        "server-time": datetime.now(timezone.utc).isoformat(timespec="seconds"),
    }


def _page_helpers_demo_data() -> dict:
    """Run page-helpers.sx functions server-side, return results for comparison with client."""
    import os
    import time
    from shared.sx.parser import parse_all
    from shared.sx.ref.sx_ref import (
        categorize_special_forms, build_reference_data,
        build_attr_detail, build_component_source,
        build_routing_analysis,
    )

    ref_dir = _ref_dir()
    results = {}

    # 1. categorize-special-forms
    t0 = time.monotonic()
    with open(os.path.join(ref_dir, "special-forms.sx")) as f:
        sf_exprs = parse_all(f.read())
    sf_result = categorize_special_forms(sf_exprs)
    sf_ms = round((time.monotonic() - t0) * 1000, 1)
    sf_summary = {cat: len(forms) for cat, forms in sf_result.items()}
    results["sf-categories"] = sf_summary
    results["sf-total"] = sum(sf_summary.values())
    results["sf-ms"] = sf_ms

    # 2. build-reference-data
    from content.pages import REQUEST_ATTRS, ATTR_DETAILS
    t1 = time.monotonic()
    ref_result = build_reference_data("attributes", {
        "req-attrs": [list(t) for t in REQUEST_ATTRS[:5]],
        "beh-attrs": [], "uniq-attrs": [],
    }, list(ATTR_DETAILS.keys()))
    ref_ms = round((time.monotonic() - t1) * 1000, 1)
    results["ref-sample"] = ref_result.get("req-attrs", [])[:3]
    results["ref-ms"] = ref_ms

    # 3. build-attr-detail
    t2 = time.monotonic()
    detail = ATTR_DETAILS.get("sx-get")
    attr_result = build_attr_detail("sx-get", detail)
    attr_ms = round((time.monotonic() - t2) * 1000, 1)
    results["attr-result"] = attr_result
    results["attr-ms"] = attr_ms

    # 4. build-component-source
    t3 = time.monotonic()
    comp_result = build_component_source({
        "type": "component", "name": "~demo-card",
        "params": ["title", "subtitle"],
        "has-children": True,
        "body-sx": "(div :class \"card\"\n  (h2 title)\n  (when subtitle (p subtitle))\n  children)",
        "affinity": "auto",
    })
    comp_ms = round((time.monotonic() - t3) * 1000, 1)
    results["comp-source"] = comp_result
    results["comp-ms"] = comp_ms

    # 5. build-routing-analysis
    t4 = time.monotonic()
    routing_result = build_routing_analysis([
        {"name": "home", "path": "/", "has-data": False, "content-src": "(~home-content)"},
        {"name": "dashboard", "path": "/dash", "has-data": True, "content-src": "(~dashboard)"},
        {"name": "about", "path": "/about", "has-data": False, "content-src": "(~about-content)"},
        {"name": "settings", "path": "/settings", "has-data": True, "content-src": "(~settings)"},
    ])
    routing_ms = round((time.monotonic() - t4) * 1000, 1)
    results["routing-result"] = routing_result
    results["routing-ms"] = routing_ms

    # Total
    results["server-total-ms"] = round(sf_ms + ref_ms + attr_ms + comp_ms + routing_ms, 1)

    # Pass raw inputs for client-side island (serialized as data-sx-state)
    results["sf-source"] = open(os.path.join(ref_dir, "special-forms.sx")).read()
    results["attr-detail"] = detail
    results["req-attrs"] = [list(t) for t in REQUEST_ATTRS[:5]]
    results["attr-keys"] = list(ATTR_DETAILS.keys())

    return results