#!/usr/bin/env bats
#
# Tests for scripts/sync-language-bundle.sh — per-project language-bundle
# freshness check for startup.
#
# Strategy: scaffold a synthetic project in a temp dir with a clean bundle
# (mirroring how install-lang.sh leaves .claude/), then perturb files and
# run the real script against it. Canonical source stays the real one (the
# script resolves languages/ + claude-rules/ relative to its own location).

REAL_REPO="$(cd "$(dirname "$BATS_TEST_FILENAME")/../.." && pwd)"
SCRIPT="$REAL_REPO/scripts/sync-language-bundle.sh"

setup() {
  PROJ="$(mktemp -d -t synclang-bats.XXXXXX)"
}

teardown() {
  rm -rf "$PROJ"
}

# Mirror install-lang.sh: copy the bundle's files into a synthetic project.
install_bundle() {
  local lang="$1" proj="$2"
  mkdir -p "$proj/.claude/rules"
  cp "$REAL_REPO/claude-rules"/*.md "$proj/.claude/rules/"
  cp "$REAL_REPO/languages/$lang/claude/rules/"*.md "$proj/.claude/rules/" 2>/dev/null || true
  if [ -d "$REAL_REPO/languages/$lang/claude/hooks" ]; then
    mkdir -p "$proj/.claude/hooks"
    cp -r "$REAL_REPO/languages/$lang/claude/hooks/." "$proj/.claude/hooks/"
  fi
  if [ -d "$REAL_REPO/languages/$lang/claude/scripts" ]; then
    mkdir -p "$proj/.claude/scripts"
    cp -r "$REAL_REPO/languages/$lang/claude/scripts/." "$proj/.claude/scripts/"
  fi
  if [ -f "$REAL_REPO/languages/$lang/claude/settings.json" ]; then
    cp "$REAL_REPO/languages/$lang/claude/settings.json" "$proj/.claude/settings.json"
  fi
  if [ -d "$REAL_REPO/languages/$lang/githooks" ]; then
    mkdir -p "$proj/githooks"
    cp -r "$REAL_REPO/languages/$lang/githooks/." "$proj/githooks/"
  fi
  # CLAUDE.md deliberately not seeded — the sync must treat its absence as
  # fine (it's seed-only / project-owned, not bundle-tracked).
}

matches_canonical() {  # project-relative-path  canonical-abs-path
  diff -q "$PROJ/$1" "$2" >/dev/null 2>&1
}

# Mirror install-team.sh: copy only the team overlay's own rule files into a
# synthetic project (no generic rules, hooks, githooks, or settings).
install_team_overlay() {
  local team="$1" proj="$2"
  mkdir -p "$proj/.claude/rules"
  cp "$REAL_REPO/teams/$team/claude/rules/"*.md "$proj/.claude/rules/"
}

# --- Normal: no bundle / clean ---

@test "sync: project with no bundle is a quiet no-op (exit 0)" {
  mkdir -p "$PROJ/.claude/rules"   # generic rules only, no language fingerprint
  cp "$REAL_REPO/claude-rules"/commits.md "$PROJ/.claude/rules/"
  run bash "$SCRIPT" "$PROJ"
  [ "$status" -eq 0 ]
  [ -z "$output" ]
}

@test "sync: clean elisp bundle is a quiet no-op (exit 0)" {
  install_bundle elisp "$PROJ"
  run bash "$SCRIPT" "$PROJ"
  [ "$status" -eq 0 ]
  [ -z "$output" ]
}

@test "sync: absent CLAUDE.md is not flagged as drift (seed-only/project-owned)" {
  install_bundle elisp "$PROJ"   # helper never seeds CLAUDE.md
  [ ! -f "$PROJ/CLAUDE.md" ]
  run bash "$SCRIPT" "$PROJ"
  [ "$status" -eq 0 ]
  [ -z "$output" ]
  [[ "$output" != *"CLAUDE.md"* ]]
}

# --- Auto-fix: rules ---

@test "sync: drifted language rule is auto-fixed and restored" {
  install_bundle elisp "$PROJ"
  echo ";; junk drift" >> "$PROJ/.claude/rules/elisp.md"
  run bash "$SCRIPT" "$PROJ"
  [ "$status" -eq 0 ]
  [[ "$output" == *"fixed"* ]]
  [[ "$output" == *".claude/rules/elisp.md"* ]]
  matches_canonical ".claude/rules/elisp.md" "$REAL_REPO/languages/elisp/claude/rules/elisp.md"
}

@test "sync: drifted generic rule is auto-fixed and restored" {
  install_bundle elisp "$PROJ"
  echo "junk" >> "$PROJ/.claude/rules/commits.md"
  run bash "$SCRIPT" "$PROJ"
  [ "$status" -eq 0 ]
  [[ "$output" == *".claude/rules/commits.md"* ]]
  matches_canonical ".claude/rules/commits.md" "$REAL_REPO/claude-rules/commits.md"
}

@test "sync: missing rule is re-copied" {
  install_bundle elisp "$PROJ"
  rm "$PROJ/.claude/rules/elisp-testing.md"
  run bash "$SCRIPT" "$PROJ"
  [ "$status" -eq 0 ]
  [ -f "$PROJ/.claude/rules/elisp-testing.md" ]
  matches_canonical ".claude/rules/elisp-testing.md" "$REAL_REPO/languages/elisp/claude/rules/elisp-testing.md"
}

# --- Auto-fix: hooks ---

@test "sync: drifted hook is auto-fixed and stays executable" {
  install_bundle elisp "$PROJ"
  echo "# junk" >> "$PROJ/.claude/hooks/validate-el.sh"
  run bash "$SCRIPT" "$PROJ"
  [ "$status" -eq 0 ]
  [[ "$output" == *"validate-el.sh"* ]]
  matches_canonical ".claude/hooks/validate-el.sh" "$REAL_REPO/languages/elisp/claude/hooks/validate-el.sh"
  [ -x "$PROJ/.claude/hooks/validate-el.sh" ]
}

# --- Auto-fix: .claude/scripts ---

@test "sync: drifted bundle script is auto-fixed and restored" {
  install_bundle elisp "$PROJ"
  echo ";; junk drift" >> "$PROJ/.claude/scripts/coverage-summary.el"
  run bash "$SCRIPT" "$PROJ"
  [ "$status" -eq 0 ]
  [[ "$output" == *".claude/scripts/coverage-summary.el"* ]]
  matches_canonical ".claude/scripts/coverage-summary.el" "$REAL_REPO/languages/elisp/claude/scripts/coverage-summary.el"
}

@test "sync: missing bundle script is re-copied" {
  install_bundle elisp "$PROJ"
  rm "$PROJ/.claude/scripts/coverage-summary.el"
  run bash "$SCRIPT" "$PROJ"
  [ "$status" -eq 0 ]
  [[ "$output" == *".claude/scripts/coverage-summary.el"* ]]
  [ -f "$PROJ/.claude/scripts/coverage-summary.el" ]
}

# --- Project-owned: Makefile fragment via inbox ---

@test "sync: coverage Makefile fragment is dropped into .ai/inbox when present" {
  install_bundle elisp "$PROJ"
  mkdir -p "$PROJ/.ai/inbox"
  run bash "$SCRIPT" "$PROJ"
  [ "$status" -eq 0 ]
  [[ "$output" == *"inbox"* ]]
  [ -f "$PROJ/.ai/inbox/from-rulesets-coverage-makefile.txt" ]
  matches_canonical ".ai/inbox/from-rulesets-coverage-makefile.txt" "$REAL_REPO/languages/elisp/coverage-makefile.txt"
}

@test "sync: no .ai/inbox means no fragment drop and no empty .ai/ created" {
  install_bundle elisp "$PROJ"
  run bash "$SCRIPT" "$PROJ"
  [ "$status" -eq 0 ]
  [[ "$output" != *"inbox"* ]]
  [ ! -d "$PROJ/.ai" ]
}

@test "sync: fragment already adopted at project root is not re-dropped" {
  install_bundle elisp "$PROJ"
  mkdir -p "$PROJ/.ai/inbox"
  cp "$REAL_REPO/languages/elisp/coverage-makefile.txt" "$PROJ/coverage-makefile.txt"
  run bash "$SCRIPT" "$PROJ"
  [ "$status" -eq 0 ]
  [ ! -f "$PROJ/.ai/inbox/from-rulesets-coverage-makefile.txt" ]
}

@test "sync: fragment already waiting in inbox is not duplicated" {
  install_bundle elisp "$PROJ"
  mkdir -p "$PROJ/.ai/inbox"
  cp "$REAL_REPO/languages/elisp/coverage-makefile.txt" "$PROJ/.ai/inbox/from-rulesets-coverage-makefile.txt"
  run bash "$SCRIPT" "$PROJ"
  [ "$status" -eq 0 ]
  [[ "$output" != *"inbox"* ]]
}

# --- Surface-only: settings.json ---

@test "sync: drifted settings.json is surfaced, NOT modified, exit 3" {
  install_bundle elisp "$PROJ"
  echo '{"_drift": true}' > "$PROJ/.claude/settings.json"
  run bash "$SCRIPT" "$PROJ"
  [ "$status" -eq 3 ]
  [[ "$output" == *"settings.json"* ]]
  [[ "$output" == *"not auto-fixed"* ]]
  # file left untouched — still carries the perturbation
  grep -q "_drift" "$PROJ/.claude/settings.json"
}

# --- Other language ---

@test "sync: python bundle detected via python-testing.md and fixed" {
  install_bundle python "$PROJ"
  echo "junk" >> "$PROJ/.claude/rules/python-testing.md"
  run bash "$SCRIPT" "$PROJ"
  [ "$status" -eq 0 ]
  [[ "$output" == *"python-testing.md"* ]]
  matches_canonical ".claude/rules/python-testing.md" "$REAL_REPO/languages/python/claude/rules/python-testing.md"
}

# --- Boundary / Error ---

@test "sync: defaults to \$PWD when no path given" {
  install_bundle elisp "$PROJ"
  echo "junk" >> "$PROJ/.claude/rules/elisp.md"
  run bash -c "cd '$PROJ' && bash '$SCRIPT'"
  [ "$status" -eq 0 ]
  [[ "$output" == *"elisp.md"* ]]
}

@test "sync: nonexistent project path errors with exit 1" {
  run bash "$SCRIPT" "/no/such/path/here"
  [ "$status" -eq 1 ]
  [[ "$output" == *"does not exist"* ]]
}

# --- Team overlays ---

@test "sync: clean team overlay is a quiet no-op (exit 0)" {
  install_team_overlay deepsat "$PROJ"
  run bash "$SCRIPT" "$PROJ"
  [ "$status" -eq 0 ]
  [ -z "$output" ]
}

@test "sync: drifted team-overlay rule is auto-fixed and restored" {
  install_team_overlay deepsat "$PROJ"
  echo "junk drift" >> "$PROJ/.claude/rules/publishing.md"
  run bash "$SCRIPT" "$PROJ"
  [ "$status" -eq 0 ]
  [[ "$output" == *"team bundle 'deepsat'"* ]]
  [[ "$output" == *"publishing.md"* ]]
  matches_canonical ".claude/rules/publishing.md" "$REAL_REPO/teams/deepsat/claude/rules/publishing.md"
}

@test "sync: team overlay does NOT pull in generic claude-rules" {
  install_team_overlay deepsat "$PROJ"   # only publishing.md present, no commits.md
  echo "junk drift" >> "$PROJ/.claude/rules/publishing.md"
  run bash "$SCRIPT" "$PROJ"
  [ "$status" -eq 0 ]
  # A team overlay owns only its own rule; the sync must not copy generic
  # rules (commits.md, testing.md, ...) into the project the way a language
  # bundle does.
  [ ! -f "$PROJ/.claude/rules/commits.md" ]
  [ ! -f "$PROJ/.claude/rules/testing.md" ]
}