"""
Federation service s-expression page components.

Renders social timeline, compose, search, following/followers, notifications,
actor profiles, login, and username selection pages.
"""
from __future__ import annotations

import os
from typing import Any
from markupsafe import escape

from shared.sx.jinja_bridge import load_service_components
from shared.sx.helpers import (
    sx_call, SxExpr,
    root_header_sx, full_page_sx, header_child_sx,
)

# Load federation-specific .sx components at import time
load_service_components(os.path.dirname(os.path.dirname(__file__)))


# ---------------------------------------------------------------------------
# Social header nav
# ---------------------------------------------------------------------------

def _social_nav_sx(actor: Any) -> str:
    """Build the social header nav bar content."""
    from quart import url_for, request

    if not actor:
        choose_url = url_for("identity.choose_username_form")
        return sx_call("federation-nav-choose-username", url=choose_url)

    links = [
        ("social.home_timeline", "Timeline"),
        ("social.public_timeline", "Public"),
        ("social.compose_form", "Compose"),
        ("social.following_list", "Following"),
        ("social.followers_list", "Followers"),
        ("social.search", "Search"),
    ]

    parts = []
    for endpoint, label in links:
        href = url_for(endpoint)
        bold = " font-bold" if request.path == href else ""
        parts.append(sx_call(
            "federation-nav-link",
            href=href,
            cls=f"px-2 py-1 rounded hover:bg-stone-200{bold}",
            label=label,
        ))

    # Notifications with live badge
    notif_url = url_for("social.notifications")
    notif_count_url = url_for("social.notification_count")
    notif_bold = " font-bold" if request.path == notif_url else ""
    parts.append(sx_call(
        "federation-nav-notification-link",
        href=notif_url,
        cls=f"px-2 py-1 rounded hover:bg-stone-200 relative{notif_bold}",
        count_url=notif_count_url,
    ))

    # Profile link
    profile_url = url_for("activitypub.actor_profile", username=actor.preferred_username)
    parts.append(sx_call(
        "federation-nav-link",
        href=profile_url,
        cls="px-2 py-1 rounded hover:bg-stone-200",
        label=f"@{actor.preferred_username}",
    ))

    items_sx = "(<> " + " ".join(parts) + ")"
    return sx_call("federation-nav-bar", items=SxExpr(items_sx))


def _social_header_sx(actor: Any) -> str:
    """Build the social section header row."""
    nav_sx = _social_nav_sx(actor)
    return sx_call("federation-social-header", nav=SxExpr(nav_sx))


def _social_page(ctx: dict, actor: Any, *, content: str,
                 title: str = "Rose Ash", meta_html: str = "") -> str:
    """Render a social page with header and content."""
    hdr = root_header_sx(ctx)
    social_hdr = _social_header_sx(actor)
    child = header_child_sx(social_hdr)
    header_rows = "(<> " + hdr + " " + child + ")"
    return full_page_sx(ctx, header_rows=header_rows, content=content,
                          meta_html=meta_html or f'<title>{escape(title)}</title>')


# ---------------------------------------------------------------------------
# Post card
# ---------------------------------------------------------------------------

def _interaction_buttons_sx(item: Any, actor: Any) -> str:
    """Render like/boost/reply buttons for a post."""
    from shared.browser.app.csrf import generate_csrf_token
    from quart import url_for

    oid = getattr(item, "object_id", "") or ""
    ainbox = getattr(item, "author_inbox", "") or ""
    lcount = getattr(item, "like_count", 0) or 0
    bcount = getattr(item, "boost_count", 0) or 0
    liked = getattr(item, "liked_by_me", False)
    boosted = getattr(item, "boosted_by_me", False)
    csrf = generate_csrf_token()

    safe_id = oid.replace("/", "_").replace(":", "_")
    target = f"#interactions-{safe_id}"

    if liked:
        like_action = url_for("social.unlike")
        like_cls = "text-red-500 hover:text-red-600"
        like_icon = "\u2665"
    else:
        like_action = url_for("social.like")
        like_cls = "hover:text-red-500"
        like_icon = "\u2661"

    if boosted:
        boost_action = url_for("social.unboost")
        boost_cls = "text-green-600 hover:text-green-700"
    else:
        boost_action = url_for("social.boost")
        boost_cls = "hover:text-green-600"

    reply_url = url_for("social.compose_form", reply_to=oid) if oid else ""
    reply_sx = sx_call("federation-reply-link", url=reply_url) if reply_url else ""

    like_form = sx_call(
        "federation-like-form",
        action=like_action, target=target, oid=oid, ainbox=ainbox,
        csrf=csrf, cls=f"flex items-center gap-1 {like_cls}",
        icon=like_icon, count=str(lcount),
    )

    boost_form = sx_call(
        "federation-boost-form",
        action=boost_action, target=target, oid=oid, ainbox=ainbox,
        csrf=csrf, cls=f"flex items-center gap-1 {boost_cls}",
        count=str(bcount),
    )

    return sx_call(
        "federation-interaction-buttons",
        like=SxExpr(like_form),
        boost=SxExpr(boost_form),
        reply=SxExpr(reply_sx) if reply_sx else None,
    )


def _post_card_sx(item: Any, actor: Any) -> str:
    """Render a single timeline post card."""
    boosted_by = getattr(item, "boosted_by", None)
    actor_icon = getattr(item, "actor_icon", None)
    actor_name = getattr(item, "actor_name", "?")
    actor_username = getattr(item, "actor_username", "")
    actor_domain = getattr(item, "actor_domain", "")
    content = getattr(item, "content", "")
    summary = getattr(item, "summary", None)
    published = getattr(item, "published", None)
    url = getattr(item, "url", None)
    post_type = getattr(item, "post_type", "")

    boost_sx = sx_call(
        "federation-boost-label", name=str(escape(boosted_by)),
    ) if boosted_by else ""

    if actor_icon:
        avatar = sx_call("federation-avatar-img", src=actor_icon, cls="w-10 h-10 rounded-full")
    else:
        initial = actor_name[0].upper() if actor_name else "?"
        avatar = sx_call(
            "federation-avatar-placeholder",
            cls="w-10 h-10 rounded-full bg-stone-300 flex items-center justify-center text-stone-600 font-bold text-sm",
            initial=initial,
        )

    domain_str = f"@{escape(actor_domain)}" if actor_domain else ""
    time_str = published.strftime("%b %d, %H:%M") if published else ""

    if summary:
        content_sx = sx_call(
            "federation-content-cw",
            summary=str(escape(summary)), content=content,
        )
    else:
        content_sx = sx_call("federation-content-plain", content=content)

    original_sx = ""
    if url and post_type == "remote":
        original_sx = sx_call("federation-original-link", url=url)

    interactions_sx = ""
    if actor:
        oid = getattr(item, "object_id", "") or ""
        safe_id = oid.replace("/", "_").replace(":", "_")
        interactions_sx = sx_call(
            "federation-interactions-wrap",
            id=f"interactions-{safe_id}",
            buttons=SxExpr(_interaction_buttons_sx(item, actor)),
        )

    return sx_call(
        "federation-post-card",
        boost=SxExpr(boost_sx) if boost_sx else None,
        avatar=SxExpr(avatar),
        actor_name=str(escape(actor_name)),
        actor_username=str(escape(actor_username)),
        domain=domain_str, time=time_str,
        content=SxExpr(content_sx),
        original=SxExpr(original_sx) if original_sx else None,
        interactions=SxExpr(interactions_sx) if interactions_sx else None,
    )


# ---------------------------------------------------------------------------
# Timeline items (pagination fragment)
# ---------------------------------------------------------------------------

def _timeline_items_sx(items: list, timeline_type: str, actor: Any,
                         actor_id: int | None = None) -> str:
    """Render timeline items with infinite scroll sentinel."""
    from quart import url_for

    parts = [_post_card_sx(item, actor) for item in items]

    if items:
        last = items[-1]
        before = last.published.isoformat() if last.published else ""
        if timeline_type == "actor" and actor_id is not None:
            next_url = url_for("social.actor_timeline_page", id=actor_id, before=before)
        else:
            next_url = url_for(f"social.{timeline_type}_timeline_page", before=before)
        parts.append(sx_call("federation-scroll-sentinel", url=next_url))

    return "(<> " + " ".join(parts) + ")" if parts else ""


# ---------------------------------------------------------------------------
# Search results (pagination fragment)
# ---------------------------------------------------------------------------

def _actor_card_sx(a: Any, actor: Any, followed_urls: set,
                     *, list_type: str = "search") -> str:
    """Render a single actor card with follow/unfollow button."""
    from shared.browser.app.csrf import generate_csrf_token
    from quart import url_for

    csrf = generate_csrf_token()
    display_name = getattr(a, "display_name", None) or getattr(a, "preferred_username", "")
    username = getattr(a, "preferred_username", "")
    domain = getattr(a, "domain", "")
    icon_url = getattr(a, "icon_url", None)
    actor_url = getattr(a, "actor_url", "")
    summary = getattr(a, "summary", None)
    aid = getattr(a, "id", None)

    safe_id = actor_url.replace("/", "_").replace(":", "_")

    if icon_url:
        avatar = sx_call("federation-actor-avatar-img", src=icon_url, cls="w-12 h-12 rounded-full")
    else:
        initial = (display_name or username)[0].upper() if (display_name or username) else "?"
        avatar = sx_call(
            "federation-actor-avatar-placeholder",
            cls="w-12 h-12 rounded-full bg-stone-300 flex items-center justify-center text-stone-600 font-bold",
            initial=initial,
        )

    # Name link
    if (list_type in ("following", "search")) and aid:
        name_sx = sx_call(
            "federation-actor-name-link",
            href=url_for("social.actor_timeline", id=aid),
            name=str(escape(display_name)),
        )
    else:
        name_sx = sx_call(
            "federation-actor-name-link-external",
            href=f"https://{domain}/@{username}",
            name=str(escape(display_name)),
        )

    summary_sx = sx_call("federation-actor-summary", summary=summary) if summary else ""

    # Follow/unfollow button
    button_sx = ""
    if actor:
        is_followed = actor_url in (followed_urls or set())
        if list_type == "following" or is_followed:
            button_sx = sx_call(
                "federation-unfollow-button",
                action=url_for("social.unfollow"), csrf=csrf, actor_url=actor_url,
            )
        else:
            label = "Follow Back" if list_type == "followers" else "Follow"
            button_sx = sx_call(
                "federation-follow-button",
                action=url_for("social.follow"), csrf=csrf, actor_url=actor_url, label=label,
            )

    return sx_call(
        "federation-actor-card",
        cls="bg-white rounded-lg shadow-sm border border-stone-200 p-4 mb-3 flex items-center gap-4",
        id=f"actor-{safe_id}",
        avatar=SxExpr(avatar),
        name=SxExpr(name_sx),
        username=str(escape(username)), domain=str(escape(domain)),
        summary=SxExpr(summary_sx) if summary_sx else None,
        button=SxExpr(button_sx) if button_sx else None,
    )


def _search_results_sx(actors: list, query: str, page: int,
                          followed_urls: set, actor: Any) -> str:
    """Render search results with pagination sentinel."""
    from quart import url_for

    parts = [_actor_card_sx(a, actor, followed_urls, list_type="search") for a in actors]
    if len(actors) >= 20:
        next_url = url_for("social.search_page", q=query, page=page + 1)
        parts.append(sx_call("federation-scroll-sentinel", url=next_url))
    return "(<> " + " ".join(parts) + ")" if parts else ""


def _actor_list_items_sx(actors: list, page: int, list_type: str,
                            followed_urls: set, actor: Any) -> str:
    """Render actor list items (following/followers) with pagination sentinel."""
    from quart import url_for

    parts = [_actor_card_sx(a, actor, followed_urls, list_type=list_type) for a in actors]
    if len(actors) >= 20:
        next_url = url_for(f"social.{list_type}_list_page", page=page + 1)
        parts.append(sx_call("federation-scroll-sentinel", url=next_url))
    return "(<> " + " ".join(parts) + ")" if parts else ""


# ---------------------------------------------------------------------------
# Notification card
# ---------------------------------------------------------------------------

def _notification_sx(notif: Any) -> str:
    """Render a single notification."""
    from_name = getattr(notif, "from_actor_name", "?")
    from_username = getattr(notif, "from_actor_username", "")
    from_domain = getattr(notif, "from_actor_domain", "")
    from_icon = getattr(notif, "from_actor_icon", None)
    ntype = getattr(notif, "notification_type", "")
    preview = getattr(notif, "target_content_preview", None)
    created = getattr(notif, "created_at", None)
    read = getattr(notif, "read", True)
    app_domain = getattr(notif, "app_domain", "")

    border = " border-l-4 border-l-stone-400" if not read else ""

    if from_icon:
        avatar = sx_call("federation-avatar-img", src=from_icon, cls="w-8 h-8 rounded-full")
    else:
        initial = from_name[0].upper() if from_name else "?"
        avatar = sx_call(
            "federation-avatar-placeholder",
            cls="w-8 h-8 rounded-full bg-stone-300 flex items-center justify-center text-stone-600 font-bold text-xs",
            initial=initial,
        )

    domain_str = f"@{escape(from_domain)}" if from_domain else ""

    type_map = {
        "follow": "followed you",
        "like": "liked your post",
        "boost": "boosted your post",
        "mention": "mentioned you",
        "reply": "replied to your post",
    }
    action = type_map.get(ntype, "")
    if ntype == "follow" and app_domain and app_domain != "federation":
        action += f" on {escape(app_domain)}"

    preview_sx = sx_call(
        "federation-notification-preview", preview=str(escape(preview)),
    ) if preview else ""
    time_str = created.strftime("%b %d, %H:%M") if created else ""

    return sx_call(
        "federation-notification-card",
        cls=f"bg-white rounded-lg shadow-sm border border-stone-200 p-4{border}",
        avatar=SxExpr(avatar),
        from_name=str(escape(from_name)),
        from_username=str(escape(from_username)),
        from_domain=domain_str, action_text=action,
        preview=SxExpr(preview_sx) if preview_sx else None,
        time=time_str,
    )


# ---------------------------------------------------------------------------
# Public API: Home page
# ---------------------------------------------------------------------------

async def render_federation_home(ctx: dict) -> str:
    """Full page: federation home (minimal)."""
    hdr = root_header_sx(ctx)
    return full_page_sx(ctx, header_rows=hdr)


# ---------------------------------------------------------------------------
# Public API: Login
# ---------------------------------------------------------------------------

async def render_login_page(ctx: dict) -> str:
    """Full page: federation login form."""
    from shared.browser.app.csrf import generate_csrf_token
    from quart import url_for

    error = ctx.get("error", "")
    email = ctx.get("email", "")
    action = url_for("auth.start_login")
    csrf = generate_csrf_token()

    error_sx = sx_call("federation-error-banner", error=error) if error else ""

    content = sx_call(
        "federation-login-form",
        error=SxExpr(error_sx) if error_sx else None,
        action=action, csrf=csrf,
        email=str(escape(email)),
    )

    return _social_page(ctx, None, content=content,
                        title="Login \u2014 Rose Ash")


async def render_check_email_page(ctx: dict) -> str:
    """Full page: check email after magic link sent."""
    email = ctx.get("email", "")
    email_error = ctx.get("email_error")

    error_sx = sx_call(
        "federation-check-email-error", error=str(escape(email_error)),
    ) if email_error else ""

    content = sx_call(
        "federation-check-email",
        email=str(escape(email)),
        error=SxExpr(error_sx) if error_sx else None,
    )

    return _social_page(ctx, None, content=content,
                        title="Check your email \u2014 Rose Ash")


# ---------------------------------------------------------------------------
# Public API: Timeline
# ---------------------------------------------------------------------------

async def render_timeline_page(ctx: dict, items: list, timeline_type: str,
                                actor: Any) -> str:
    """Full page: timeline (home or public)."""
    from quart import url_for

    label = "Home" if timeline_type == "home" else "Public"
    compose_sx = ""
    if actor:
        compose_url = url_for("social.compose_form")
        compose_sx = sx_call("federation-compose-button", url=compose_url)

    timeline_sx = _timeline_items_sx(items, timeline_type, actor)

    content = sx_call(
        "federation-timeline-page",
        label=label,
        compose=SxExpr(compose_sx) if compose_sx else None,
        timeline=SxExpr(timeline_sx) if timeline_sx else None,
    )

    return _social_page(ctx, actor, content=content,
                        title=f"{label} Timeline \u2014 Rose Ash")


async def render_timeline_items(items: list, timeline_type: str,
                                 actor: Any, actor_id: int | None = None) -> str:
    """Pagination fragment: timeline items."""
    return _timeline_items_sx(items, timeline_type, actor, actor_id)


# ---------------------------------------------------------------------------
# Public API: Compose
# ---------------------------------------------------------------------------

async def render_compose_page(ctx: dict, actor: Any, reply_to: str | None) -> str:
    """Full page: compose form."""
    from shared.browser.app.csrf import generate_csrf_token
    from quart import url_for

    csrf = generate_csrf_token()
    action = url_for("social.compose_submit")

    reply_sx = ""
    if reply_to:
        reply_sx = sx_call(
            "federation-compose-reply",
            reply_to=str(escape(reply_to)),
        )

    content = sx_call(
        "federation-compose-form",
        action=action, csrf=csrf,
        reply=SxExpr(reply_sx) if reply_sx else None,
    )

    return _social_page(ctx, actor, content=content,
                        title="Compose \u2014 Rose Ash")


# ---------------------------------------------------------------------------
# Public API: Search
# ---------------------------------------------------------------------------

async def render_search_page(ctx: dict, query: str, actors: list, total: int,
                              page: int, followed_urls: set, actor: Any) -> str:
    """Full page: search."""
    from quart import url_for

    search_url = url_for("social.search")
    search_page_url = url_for("social.search_page")

    results_sx = _search_results_sx(actors, query, page, followed_urls, actor)

    info_sx = ""
    if query and total:
        s = "s" if total != 1 else ""
        info_sx = sx_call(
            "federation-search-info",
            cls="text-sm text-stone-500 mb-4",
            text=f"{total} result{s} for <strong>{escape(query)}</strong>",
        )
    elif query:
        info_sx = sx_call(
            "federation-search-info",
            cls="text-stone-500 mb-4",
            text=f"No results found for <strong>{escape(query)}</strong>",
        )

    content = sx_call(
        "federation-search-page",
        search_url=search_url, search_page_url=search_page_url,
        query=str(escape(query)),
        info=SxExpr(info_sx) if info_sx else None,
        results=SxExpr(results_sx) if results_sx else None,
    )

    return _social_page(ctx, actor, content=content,
                        title="Search \u2014 Rose Ash")


async def render_search_results(actors: list, query: str, page: int,
                                 followed_urls: set, actor: Any) -> str:
    """Pagination fragment: search results."""
    return _search_results_sx(actors, query, page, followed_urls, actor)


# ---------------------------------------------------------------------------
# Public API: Following / Followers
# ---------------------------------------------------------------------------

async def render_following_page(ctx: dict, actors: list, total: int,
                                 actor: Any) -> str:
    """Full page: following list."""
    items_sx = _actor_list_items_sx(actors, 1, "following", set(), actor)
    content = sx_call(
        "federation-actor-list-page",
        title="Following", count_str=f"({total})",
        items=SxExpr(items_sx) if items_sx else None,
    )
    return _social_page(ctx, actor, content=content,
                        title="Following \u2014 Rose Ash")


async def render_following_items(actors: list, page: int, actor: Any) -> str:
    """Pagination fragment: following items."""
    return _actor_list_items_sx(actors, page, "following", set(), actor)


async def render_followers_page(ctx: dict, actors: list, total: int,
                                 followed_urls: set, actor: Any) -> str:
    """Full page: followers list."""
    items_sx = _actor_list_items_sx(actors, 1, "followers", followed_urls, actor)
    content = sx_call(
        "federation-actor-list-page",
        title="Followers", count_str=f"({total})",
        items=SxExpr(items_sx) if items_sx else None,
    )
    return _social_page(ctx, actor, content=content,
                        title="Followers \u2014 Rose Ash")


async def render_followers_items(actors: list, page: int,
                                  followed_urls: set, actor: Any) -> str:
    """Pagination fragment: followers items."""
    return _actor_list_items_sx(actors, page, "followers", followed_urls, actor)


# ---------------------------------------------------------------------------
# Public API: Actor timeline
# ---------------------------------------------------------------------------

async def render_actor_timeline_page(ctx: dict, remote_actor: Any, items: list,
                                      is_following: bool, actor: Any) -> str:
    """Full page: remote actor timeline."""
    from shared.browser.app.csrf import generate_csrf_token
    from quart import url_for

    csrf = generate_csrf_token()
    display_name = remote_actor.display_name or remote_actor.preferred_username
    icon_url = getattr(remote_actor, "icon_url", None)
    summary = getattr(remote_actor, "summary", None)
    actor_url = getattr(remote_actor, "actor_url", "")

    if icon_url:
        avatar = sx_call("federation-avatar-img", src=icon_url, cls="w-16 h-16 rounded-full")
    else:
        initial = display_name[0].upper() if display_name else "?"
        avatar = sx_call(
            "federation-avatar-placeholder",
            cls="w-16 h-16 rounded-full bg-stone-300 flex items-center justify-center text-stone-600 font-bold text-xl",
            initial=initial,
        )

    summary_sx = sx_call("federation-profile-summary", summary=summary) if summary else ""

    follow_sx = ""
    if actor:
        if is_following:
            follow_sx = sx_call(
                "federation-follow-form",
                action=url_for("social.unfollow"), csrf=csrf, actor_url=actor_url,
                label="Unfollow",
                cls="border border-stone-300 rounded px-4 py-2 hover:bg-stone-100",
            )
        else:
            follow_sx = sx_call(
                "federation-follow-form",
                action=url_for("social.follow"), csrf=csrf, actor_url=actor_url,
                label="Follow",
                cls="bg-stone-800 text-white rounded px-4 py-2 hover:bg-stone-700",
            )

    timeline_sx = _timeline_items_sx(items, "actor", actor, remote_actor.id)

    header_sx = sx_call(
        "federation-actor-profile-header",
        avatar=SxExpr(avatar),
        display_name=str(escape(display_name)),
        username=str(escape(remote_actor.preferred_username)),
        domain=str(escape(remote_actor.domain)),
        summary=SxExpr(summary_sx) if summary_sx else None,
        follow=SxExpr(follow_sx) if follow_sx else None,
    )

    content = sx_call(
        "federation-actor-timeline-layout",
        header=SxExpr(header_sx),
        timeline=SxExpr(timeline_sx) if timeline_sx else None,
    )

    return _social_page(ctx, actor, content=content,
                        title=f"{display_name} \u2014 Rose Ash")


async def render_actor_timeline_items(items: list, actor_id: int,
                                       actor: Any) -> str:
    """Pagination fragment: actor timeline items."""
    return _timeline_items_sx(items, "actor", actor, actor_id)


# ---------------------------------------------------------------------------
# Public API: Notifications
# ---------------------------------------------------------------------------

async def render_notifications_page(ctx: dict, notifications: list,
                                     actor: Any) -> str:
    """Full page: notifications."""
    if not notifications:
        notif_sx = sx_call("federation-notifications-empty")
    else:
        items_sx = "(<> " + " ".join(_notification_sx(n) for n in notifications) + ")"
        notif_sx = sx_call(
            "federation-notifications-list",
            items=SxExpr(items_sx),
        )

    content = sx_call("federation-notifications-page", notifs=SxExpr(notif_sx))
    return _social_page(ctx, actor, content=content,
                        title="Notifications \u2014 Rose Ash")


# ---------------------------------------------------------------------------
# Public API: Choose username
# ---------------------------------------------------------------------------

async def render_choose_username_page(ctx: dict) -> str:
    """Full page: choose username form."""
    from shared.browser.app.csrf import generate_csrf_token
    from quart import url_for
    from shared.config import config

    csrf = generate_csrf_token()
    error = ctx.get("error", "")
    username = ctx.get("username", "")
    ap_domain = config().get("ap_domain", "rose-ash.com")
    check_url = url_for("identity.check_username")
    actor = ctx.get("actor")

    error_sx = sx_call("federation-error-banner", error=error) if error else ""

    content = sx_call(
        "federation-choose-username",
        domain=str(escape(ap_domain)),
        error=SxExpr(error_sx) if error_sx else None,
        csrf=csrf, username=str(escape(username)),
        check_url=check_url,
    )

    return _social_page(ctx, actor, content=content,
                        title="Choose Username \u2014 Rose Ash")


# ---------------------------------------------------------------------------
# Public API: Actor profile
# ---------------------------------------------------------------------------

async def render_profile_page(ctx: dict, actor: Any, activities: list,
                               total: int) -> str:
    """Full page: actor profile."""
    from shared.config import config

    ap_domain = config().get("ap_domain", "rose-ash.com")
    display_name = actor.display_name or actor.preferred_username
    summary_sx = sx_call(
        "federation-profile-summary-text", text=str(escape(actor.summary)),
    ) if actor.summary else ""

    activities_sx = ""
    if activities:
        parts = []
        for a in activities:
            published = a.published.strftime("%Y-%m-%d %H:%M") if a.published else ""
            obj_type_sx = sx_call(
                "federation-activity-obj-type", obj_type=a.object_type,
            ) if a.object_type else ""
            parts.append(sx_call(
                "federation-activity-card",
                activity_type=a.activity_type, published=published,
                obj_type=SxExpr(obj_type_sx) if obj_type_sx else None,
            ))
        items_sx = "(<> " + " ".join(parts) + ")"
        activities_sx = sx_call("federation-activities-list", items=SxExpr(items_sx))
    else:
        activities_sx = sx_call("federation-activities-empty")

    content = sx_call(
        "federation-profile-page",
        display_name=str(escape(display_name)),
        username=str(escape(actor.preferred_username)),
        domain=str(escape(ap_domain)),
        summary=SxExpr(summary_sx) if summary_sx else None,
        activities_heading=f"Activities ({total})",
        activities=SxExpr(activities_sx),
    )

    return _social_page(ctx, actor, content=content,
                        title=f"@{actor.preferred_username} \u2014 Rose Ash")


# ---------------------------------------------------------------------------
# Public API: POST handler fragment renderers
# ---------------------------------------------------------------------------

def render_interaction_buttons(object_id: str, author_inbox: str,
                                like_count: int, boost_count: int,
                                liked_by_me: bool, boosted_by_me: bool,
                                actor: Any) -> str:
    """Render interaction buttons fragment for HTMX POST response."""
    from types import SimpleNamespace
    item = SimpleNamespace(
        object_id=object_id,
        author_inbox=author_inbox,
        like_count=like_count,
        boost_count=boost_count,
        liked_by_me=liked_by_me,
        boosted_by_me=boosted_by_me,
    )
    return _interaction_buttons_sx(item, actor)


def render_actor_card(actor_dto: Any, actor: Any, followed_urls: set,
                      *, list_type: str = "following") -> str:
    """Render a single actor card fragment for HTMX POST response."""
    return _actor_card_sx(actor_dto, actor, followed_urls, list_type=list_type)