#!/usr/bin/env bash
# Run all test-*.sh files in the repo (including plugins) and the bats suite.
# Usage: bash tests/run-tests.sh [--bats-only]
#
# A script exiting 77 (the automake convention) is reported as SKIPPED, not
# passed — a suite that can't run for lack of a binary must not read as green.
#
# TEST_DIR — override root to search for test-*.sh (default: REPO_ROOT); used by tests.
set -euo pipefail

REPO_ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
BATS="$REPO_ROOT/tests/run-bats.sh"
BATS_ONLY=false
[[ "${1:-}" == "--bats-only" ]] && BATS_ONLY=true

SEARCH_ROOT="${TEST_DIR:-$REPO_ROOT}"

FAILED=()
SKIPPED=()
PASSED=0
SKIP_EXIT=77

run_bats() {
  if [[ -x "$BATS" ]]; then
    echo "=== bats ==="
    bash "$BATS"
    echo ""
  fi
}

if $BATS_ONLY; then
  run_bats
  exit 0
fi

run_bats

# Collected with a `while read` loop rather than `mapfile` — macOS ships
# /bin/bash 3.2, which has no `mapfile`. Process substitution (not a pipe)
# keeps the loop in this shell so the appends survive. `sort` is still fed
# newline-delimited output, exactly as before.
SCRIPTS=()
while IFS= read -r script; do
  SCRIPTS+=("$script")
done < <(
  find "$SEARCH_ROOT" -name "test-*.sh" \
    -not -path "*/.git/*" \
    -not -path "*/.claude/worktrees/*" \
    | sort
)

# Each test-*.sh is independent (fixtures live under its own mktemp dir, none
# write back into the live repo tree -- verified before adding this), so they
# run concurrently in fixed-size batches instead of one at a time. Batches
# (not a rolling pool) because a bounded rolling pool needs `wait -n`, which
# is bash 4.3+ and this script is explicitly bash-3.2-safe (see the hazard
# scan in test-vale-wrap.sh); plain `wait` -- waiting for every job in the
# current batch -- is available since ancient bash. `getconf` over `nproc`
# for the same reason: `nproc` doesn't exist on macOS.
SCRATCH_ROOT="$(mktemp -d)"
trap 'rm -rf "$SCRATCH_ROOT"' EXIT
JOBS_LIMIT="$(getconf _NPROCESSORS_ONLN 2>/dev/null || echo 4)"

running=0
idx=0
for script in ${SCRIPTS[@]+"${SCRIPTS[@]}"}; do
  idx=$((idx + 1))
  (
    rc=0
    bash "$script" >"$SCRATCH_ROOT/$idx.log" 2>&1 || rc=$?
    echo "$rc" >"$SCRATCH_ROOT/$idx.status"
  ) &
  running=$((running + 1))
  if [[ $running -ge $JOBS_LIMIT ]]; then
    wait
    running=0
  fi
done
wait

idx=0
for script in ${SCRIPTS[@]+"${SCRIPTS[@]}"}; do
  idx=$((idx + 1))
  rel="${script#"$SEARCH_ROOT/"}"
  echo "=== $rel ==="
  cat "$SCRATCH_ROOT/$idx.log"
  rc="$(cat "$SCRATCH_ROOT/$idx.status" 2>/dev/null || echo 1)"
  if [[ $rc -eq 0 ]]; then
    PASSED=$((PASSED + 1))
  elif [[ $rc -eq $SKIP_EXIT ]]; then
    SKIPPED+=("$rel")
  else
    FAILED+=("$rel")
  fi
  echo ""
done

echo "=== Summary: $PASSED passed, ${#SKIPPED[@]} skipped, ${#FAILED[@]} failed ==="
if [[ ${#SKIPPED[@]} -gt 0 ]]; then
  echo "Skipped scripts:"
  for s in ${SKIPPED[@]+"${SKIPPED[@]}"}; do
    echo "  $s"
  done
fi
if [[ ${#FAILED[@]} -gt 0 ]]; then
  echo "Failed scripts:"
  for s in ${FAILED[@]+"${FAILED[@]}"}; do
    echo "  $s"
  done
  exit 1
fi