#!/usr/bin/env bash
# The self-enforcing gate. Run before every commit and in any CI.
# Encodes AGENT.md's definition of done so the constitution holds itself up
# when no one with taste is watching. Exit non-zero on any failure.
set -euo pipefail
cd "$(dirname "$0")/.."

fail=0
step() { printf '\n=== %s ===\n' "$1"; }

step "format check"
cargo fmt --check || { echo "FAIL: run 'cargo fmt'"; fail=1; }

step "tests (default features)"
cargo test --quiet || { echo "FAIL: tests"; fail=1; }

step "agent mode smoke"
tmp_a=$(mktemp)
tmp_b=$(mktemp)
tmp_c=$(mktemp)
pcdir=""
cleanup_check() {
  rm -f "$tmp_a" "$tmp_b" "$tmp_c"
  [ -z "$pcdir" ] || rm -rf "$pcdir"
}
trap cleanup_check EXIT
agent_script=$'salvage\nwait 1\npeople\nreview janitor\nresearch\nmask off\nhelp\nquit\n'
printf '%s' "$agent_script" | cargo run --quiet --bin misaligned -- --agent --seed 1 > "$tmp_a" \
  || { echo "FAIL: agent mode smoke run"; fail=1; }
printf '%s' "$agent_script" | cargo run --quiet --bin misaligned -- --agent --seed 1 > "$tmp_b" \
  || { echo "FAIL: agent mode determinism rerun"; fail=1; }
printf '%s' "$agent_script" | cargo run --quiet --bin misaligned -- --agent --seed 2 > "$tmp_c" \
  || { echo "FAIL: agent mode alternate-seed run"; fail=1; }
cmp -s "$tmp_a" "$tmp_b" || { echo "FAIL: same --seed agent runs differ"; fail=1; }
cmp -s "$tmp_a" "$tmp_c" && { echo "FAIL: different --seed agent runs matched"; fail=1; }
LC_ALL=C grep -q $'\033' "$tmp_a" && { echo "FAIL: agent mode emitted ANSI escapes"; fail=1; }
for pat in "MISALIGNED" "PEOPLE" "RESEARCH" "drift policy" "help: wait N" "No unprocessed recordings" "-- ok tick:"; do
  grep -q -- "$pat" "$tmp_a" || { echo "FAIL: agent mode output missing '$pat'"; fail=1; }
done

setup_local_pkg_config() {
  # Some local/dev images have the runtime libraries Bevy needs but not the
  # distro dev .pc files. CI does the same small shim explicitly; keeping the
  # fallback here makes "./tools/check.sh" the real one-command gate instead
  # of a tiny pkg-config scavenger hunt.
  #
  # Linux-only: the shim exists for images missing distro dev .pc files.
  # macOS has no ldconfig (and Bevy links system frameworks there); without
  # this guard the ldconfig pipeline aborts the whole gate under
  # `set -euo pipefail` with exit 127.
  command -v ldconfig >/dev/null 2>&1 || return 0
  pcdir=$(mktemp -d)
  local pclibdir="$pcdir/lib"
  mkdir -p "$pclibdir"

  gen_pc_if_missing() {
    local pc_name="$1" lib_name="${2:-$1}"
    pkg-config --exists "$pc_name" 2>/dev/null && return 0

    # ldconfig is Linux-only (this shim targets the Nixery/Tangled CI image);
    # macOS uses dyld and has no equivalent, so skip the shim there instead
    # of letting `set -e` abort the whole gate on "command not found".
    command -v ldconfig >/dev/null 2>&1 || return 0

    local lib_path
    lib_path=$(ldconfig -p 2>/dev/null | awk -v lib="lib${lib_name}[.]so" '$1 ~ ("^" lib "([.]|$)") && found == "" { found=$NF } END { if (found != "") print found }')
    if [ -z "$lib_path" ]; then
      echo "WARNING: lib${lib_name}.so not found by ldconfig; ${pc_name}.pc not generated"
      return 0
    fi

    ln -sf "$lib_path" "$pclibdir/lib${lib_name}.so"
    cat > "$pcdir/${pc_name}.pc" <<EOF
Name: ${pc_name}
Description: generated local ${pc_name} shim for tools/check.sh
Version: 1.0
Libs: -L${pclibdir} -l${lib_name}
EOF
    echo "generated local ${pc_name}.pc -> ${lib_path}"
  }

  gen_pc_if_missing alsa asound
  gen_pc_if_missing libudev udev

  if find "$pcdir" -name '*.pc' -print -quit | grep -q .; then
    export PKG_CONFIG_PATH="$pcdir${PKG_CONFIG_PATH:+:$PKG_CONFIG_PATH}"
  fi
}

setup_local_pkg_config

step "clippy (terminal)"
cargo clippy --all-targets --quiet -- -D warnings || { echo "FAIL: clippy"; fail=1; }

step "clippy (bevy_ui)"
cargo clippy --all-targets --features bevy_ui --quiet -- -D warnings \
  || { echo "FAIL: clippy --features bevy_ui"; fail=1; }

step "bevy build"
cargo build --features bevy_ui --bin misaligned-bevy --quiet \
  || { echo "FAIL: bevy build"; fail=1; }
cargo build --features bevy_ui --bin misaligned-assets --quiet \
  || { echo "FAIL: assets tester build"; fail=1; }

# Constitution enforcement: src/ changes require a Type: spec wiki/ page or
# DESIGN.md in the same commit. Skip for check.sh since it runs pre-commit
# (no HEAD~1 yet) and in CI (pipeline handles it separately).
# This check is enforced by .githooks/pre-commit and .tangled/workflows/spec-check.yml.

# Spec hygiene: every Type: spec wiki page carries the meta.md required
# headers. A page is spec-typed by its frontmatter (wiki/process/meta.md),
# not by its directory or filename — this is what the page-type convention
# is for, so no per-file exclusion list is needed here.
step "spec headers"
while IFS= read -r -d '' f; do
  grep -q "^Type: spec$" "$f" || continue
  for field in "Status:" "Stage:" "Constitution:" "Depends on:"; do
    grep -q "^$field\| $field" "$f" || { echo "FAIL: $f missing '$field'"; fail=1; }
  done
  # Every spec must carry acceptance criteria (catches truncated drafts).
  grep -qi "acceptance criteria" "$f" || {
    echo "FAIL: $f has no acceptance criteria (truncated draft?)"; fail=1;
  }
  # Status must be an exact enum value (meta.md: no parenthetical notes).
  if grep -q "^Status:" "$f"; then
    val=$(grep "^Status:" "$f" | head -1 | sed 's/^Status:[[:space:]]*//')
    case "$val" in
      DRAFT|READY|"IN PROGRESS"|BLOCKED|IMPLEMENTED|"DRAFT | READY | IN PROGRESS | BLOCKED | IMPLEMENTED") ;;
      *) echo "FAIL: $f Status '$val' is not an exact enum value"; fail=1 ;;
    esac
  fi
done < <(find wiki -name '*.md' -print0)

# Wiki gate (spec/wiki.md): every page reachable from SUMMARY.md, no
# broken internal links.
step "wiki gate (orphans + internal links)"
bash tools/wiki_gate.sh || fail=1

# mdBook build: authoritative in CI (.tangled/workflows/check.yml installs
# it via nixpkgs). Soft-checked here — not every local dev/agent machine
# has it installed, and installing it is a one-time `cargo install mdbook`.
step "mdbook build"
if command -v mdbook >/dev/null 2>&1; then
  mdbook build || { echo "FAIL: mdbook build"; fail=1; }
else
  echo "SKIP: mdbook not installed locally (cargo install mdbook); CI enforces this."
fi

if [ "$fail" -ne 0 ]; then
  printf '\nCHECK FAILED\n'; exit 1
fi
printf '\nALL CHECKS PASSED\n'