#!/usr/bin/env bash
# next/tests/bootstrap_read.sh — Step 4c acceptance test.
#
# Exercises bootstrap:read_genesis/0, read_section/2, sections/0,
# section_subdir/1, ends_with_sx/1. Verifies per-section file
# counts match the manifest authored in Steps 4a/4b. 14 cases.

set -uo pipefail
cd "$(git rev-parse --show-toplevel)"

SX_SERVER="${SX_SERVER:-hosts/ocaml/_build/default/bin/sx_server.exe}"
if [ ! -x "$SX_SERVER" ]; then
  SX_SERVER="/root/rose-ash/hosts/ocaml/_build/default/bin/sx_server.exe"
fi
if [ ! -x "$SX_SERVER" ]; then
  echo "ERROR: sx_server.exe not found." >&2
  exit 1
fi

VERBOSE="${1:-}"
PASS=0; FAIL=0; ERRORS=""
TMPFILE=$(mktemp); trap "rm -f $TMPFILE" EXIT

cat > "$TMPFILE" <<'EPOCHS'
(epoch 1)
(load "lib/erlang/tokenizer.sx")
(load "lib/erlang/parser.sx")
(load "lib/erlang/parser-core.sx")
(load "lib/erlang/parser-expr.sx")
(load "lib/erlang/parser-module.sx")
(load "lib/erlang/transpile.sx")
(load "lib/erlang/runtime.sx")
(load "lib/erlang/vm/dispatcher.sx")

(epoch 2)
(eval "(get (erlang-load-module (file-read \"next/kernel/bootstrap.erl\")) :name)")

;; sections/0 returns 7 atoms
(epoch 10)
(eval "(erlang-eval-ast \"length(bootstrap:sections())\")")

;; ends_with_sx — positive on "create.sx", negative on "hello"
(epoch 11)
(eval "(get (erlang-eval-ast \"bootstrap:ends_with_sx(<<99,114,101,97,116,101,46,115,120>>)\") :name)")
(epoch 12)
(eval "(get (erlang-eval-ast \"bootstrap:ends_with_sx(<<104,101,108,108,111>>)\") :name)")
(epoch 13)
(eval "(get (erlang-eval-ast \"bootstrap:ends_with_sx(<<>>)\") :name)")

;; Per-section file counts match the manifest (3/10/7/3/3/2/3)
(epoch 20)
(eval "(erlang-eval-ast \"length(bootstrap:read_section(bootstrap:default_base(), activity_types))\")")
(epoch 21)
(eval "(erlang-eval-ast \"length(bootstrap:read_section(bootstrap:default_base(), object_types))\")")
(epoch 22)
(eval "(erlang-eval-ast \"length(bootstrap:read_section(bootstrap:default_base(), projections))\")")
(epoch 23)
(eval "(erlang-eval-ast \"length(bootstrap:read_section(bootstrap:default_base(), validators))\")")
(epoch 24)
(eval "(erlang-eval-ast \"length(bootstrap:read_section(bootstrap:default_base(), codecs))\")")
(epoch 25)
(eval "(erlang-eval-ast \"length(bootstrap:read_section(bootstrap:default_base(), sig_suites))\")")
(epoch 26)
(eval "(erlang-eval-ast \"length(bootstrap:read_section(bootstrap:default_base(), audience))\")")

;; read_genesis/0 returns {ok, [{Section, Entries}, ...]} with 7 entries
(epoch 30)
(eval "(erlang-eval-ast \"{ok, G} = bootstrap:read_genesis(), length(G)\")")

;; First entry is {activity_types, [_,_,_]}
(epoch 31)
(eval "(get (erlang-eval-ast \"{ok, G} = bootstrap:read_genesis(), {S, Entries} = hd(G), S\") :name)")

;; Each entry has the right number of files
(epoch 32)
(eval "(erlang-eval-ast \"{ok, G} = bootstrap:read_genesis(), {_, E} = hd(G), length(E)\")")
EPOCHS

OUTPUT=$(timeout 120 "$SX_SERVER" < "$TMPFILE" 2>/dev/null)

check() {
  local epoch="$1" desc="$2" expected="$3"
  local actual
  actual=$(echo "$OUTPUT" | awk -v e="$epoch" '
    $0 ~ "^\\(ok-len " e " " { getline; print; exit }
    $0 ~ "^\\(ok " e " "     { print; exit }
    $0 ~ "^\\(error " e " "  { print; exit }
  ')
  [ -z "$actual" ] && actual="<no output for epoch $epoch>"
  if echo "$actual" | grep -qF -- "$expected"; then
    PASS=$((PASS+1))
    [ "$VERBOSE" = "-v" ] && echo "  ok $desc"
  else
    FAIL=$((FAIL+1))
    ERRORS+="  FAIL [$desc] (epoch $epoch) expected: $expected | actual: $actual
"
  fi
}

check  2  "module load name"                "bootstrap"
check 10  "sections/0 length"               "7"
check 11  "ends_with_sx create.sx"          "true"
check 12  "ends_with_sx hello"              "false"
check 13  "ends_with_sx empty"              "false"
check 20  "section activity_types count"    "3"
check 21  "section object_types count"      "10"
check 22  "section projections count"       "7"
check 23  "section validators count"        "3"
check 24  "section codecs count"            "3"
check 25  "section sig_suites count"        "2"
check 26  "section audience count"          "3"
check 30  "read_genesis returns 7 sections" "7"
check 31  "first section name"              "activity_types"
check 32  "first section entry count"       "3"

TOTAL=$((PASS+FAIL))
if [ $FAIL -eq 0 ]; then
  echo "ok $PASS/$TOTAL next/tests/bootstrap_read.sh passed"
else
  echo "FAIL $PASS/$TOTAL passed, $FAIL failed:"
  echo "$ERRORS"
fi
[ $FAIL -eq 0 ]