#!/usr/bin/env bats
#
# Tests for scripts/sweep-gitignore-tooling.sh — backfill the personal-tooling
# gitignore set across existing gitignore-mode AI projects.
#
# Strategy: scaffold fake AI projects (a .ai/protocols.org marker + a git repo)
# under a temp root, run the sweep against that root, and assert on each
# project's .gitignore.

REAL_REPO="$(cd "$(dirname "$BATS_TEST_FILENAME")/../.." && pwd)"
SWEEP="$REAL_REPO/scripts/sweep-gitignore-tooling.sh"

setup() {
  ROOT="$(mktemp -d -t sweep-bats.XXXXXX)"
}

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

# Scaffold a project: $1 = name, $2 = initial .gitignore content (may be empty),
# $3 = "git" to init a repo (default), "nogit" to skip.
make_project() {
  local name="$1" gitignore="${2-}" git="${3-git}"
  mkdir -p "$ROOT/$name/.ai"
  echo "marker" > "$ROOT/$name/.ai/protocols.org"
  [ -n "$gitignore" ] && printf '%s' "$gitignore" > "$ROOT/$name/.gitignore"
  [ "$git" = "git" ] && (cd "$ROOT/$name" && git init -q)
  return 0
}

@test "sweep: gitignore-mode project missing all three gets them appended" {
  make_project gimode $'# tooling\n.ai/\n'

  run bash "$SWEEP" "$ROOT"

  [ "$status" -eq 0 ]
  grep -qFx ".claude/" "$ROOT/gimode/.gitignore"
  grep -qFx "CLAUDE.md" "$ROOT/gimode/.gitignore"
  grep -qFx "AGENTS.md" "$ROOT/gimode/.gitignore"
}

@test "sweep: is idempotent — a second run adds nothing" {
  make_project gimode $'.ai/\n'
  bash "$SWEEP" "$ROOT" >/dev/null

  run bash "$SWEEP" "$ROOT"

  [ "$status" -eq 0 ]
  [[ "$output" == *"already complete"* ]]
  # No line is duplicated.
  [ "$(grep -cFx '.claude/' "$ROOT/gimode/.gitignore")" -eq 1 ]
  [ "$(grep -cFx 'CLAUDE.md' "$ROOT/gimode/.gitignore")" -eq 1 ]
  [ "$(grep -cFx 'AGENTS.md' "$ROOT/gimode/.gitignore")" -eq 1 ]
}

@test "sweep: track-mode project (.ai/ not ignored) is skipped untouched" {
  make_project trackmode $'# build\nout/\n'

  run bash "$SWEEP" "$ROOT"

  [ "$status" -eq 0 ]
  [[ "$output" == *"track-mode"* ]]
  # .gitignore is untouched — none of the tooling lines were added.
  ! grep -qFx ".claude/" "$ROOT/trackmode/.gitignore"
  ! grep -qFx "CLAUDE.md" "$ROOT/trackmode/.gitignore"
}

@test "sweep: partial project gets only the missing lines" {
  make_project partial $'.ai/\n.claude/\n'

  run bash "$SWEEP" "$ROOT"

  [ "$status" -eq 0 ]
  [ "$(grep -cFx '.claude/' "$ROOT/partial/.gitignore")" -eq 1 ]
  grep -qFx "CLAUDE.md" "$ROOT/partial/.gitignore"
  grep -qFx "AGENTS.md" "$ROOT/partial/.gitignore"
}

@test "sweep: --dry-run reports without writing" {
  make_project gimode $'.ai/\n'

  run bash "$SWEEP" --dry-run "$ROOT"

  [ "$status" -eq 0 ]
  [[ "$output" == *"would add"* ]]
  [[ "$output" == *"no files written"* ]]
  # Nothing was actually written.
  ! grep -qFx ".claude/" "$ROOT/gimode/.gitignore"
}

@test "sweep: warns when a now-ignored path is already tracked" {
  make_project tracked $'.ai/\n'
  echo "# project rules" > "$ROOT/tracked/CLAUDE.md"
  (cd "$ROOT/tracked" && git add CLAUDE.md && git -c user.email=t@t -c user.name=t commit -qm seed)

  run bash "$SWEEP" "$ROOT"

  [ "$status" -eq 0 ]
  [[ "$output" == *"WARN"* ]]
  [[ "$output" == *"CLAUDE.md is currently tracked"* ]]
}

@test "sweep: non-git project with .ai/ marker is skipped" {
  make_project nogit $'.ai/\n' "" nogit

  run bash "$SWEEP" "$ROOT"

  [ "$status" -eq 0 ]
  [[ "$output" == *"not a git checkout"* ]]
}