#!/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] [--strict]
#
# 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.
#
# --strict (or RUN_TESTS_STRICT=1) additionally makes any skip FAIL the run. Two
# different readings of a skip are both correct, and which one applies depends on
# who is running:
#
#   * ad-hoc, on a laptop: skipping gracefully is the point. You are missing a
#     dev binary, the other 15 suites still tell you something, and turning that
#     into a red run would just train people to ignore red.
#   * as a GATE (the run-tests pre-push hook): a skip is a SETUP ERROR, not a
#     legitimate state. AGENTS.md documents vale, apm and jq as required pre-push
#     dependencies, so a suite that cannot run on the machine doing the pushing
#     means the machine is misconfigured -- and pre-commit prints NOTHING for a
#     passing hook, so the skip list below is swallowed entirely. On a vale-less
#     PATH that silently shipped a green gate having verified 15 of 17 suites.
#     Exactly the vacuous-pass class the rest of this file exists to close.
#
# Deliberately its own switch, NOT folded into
# CHECK_VALE_STYLE_SYNC_ALLOW_MISSING_VALE. That one governs whether
# check-vale-style-sync may downgrade itself; this one governs whether the test
# dispatcher tolerates an unrunnable suite. They are separate decisions and one
# flag disarming both gates is how an opt-out quietly grows blast radius.
#
# 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
STRICT=false
if [[ "${RUN_TESTS_STRICT:-}" == "1" ]]; then
  STRICT=true
fi
# A loop rather than the `[[ "${1:-}" == --bats-only ]]` test this used to be, so
# the two flags compose and an unknown flag is rejected instead of ignored. A
# silently-ignored `--strict` is the one typo that would turn the gate back off.
for arg in ${@+"$@"}; do
  case "$arg" in
    --bats-only) BATS_ONLY=true ;;
    --strict) STRICT=true ;;
    *)
      echo "Usage: $0 [--bats-only] [--strict]" >&2
      exit 2
      ;;
  esac
done

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

FAILED=()
SKIPPED=()
# Parallel array, index-matched to SKIPPED. Not an associative array: bash 3.2
# (macOS) has none, and tests/test-vale-wrap.sh's bash-3.2 scan rejects
# `declare -A` outright.
SKIP_REASONS=()
PASSED=0
SKIP_EXIT=77

# A missing or non-executable run-bats.sh is a hard error, never a silent skip.
# This was `if [[ -x "$BATS" ]]; then ... fi` with no else and no assertion that
# bats ran at all, so renaming, moving, or dropping the executable bit off
# run-bats.sh made the entire bats suite vanish with zero diagnostic and the run
# still printed "Summary: N passed, 0 failed" and exited 0 -- and --bats-only
# degraded to a no-op that printed nothing and exited 0. That is the same
# green-either-way hole run-bats.sh's own zero-count guard closes one level down;
# this closes it in the dispatcher that pre-push actually invokes.
#
# Present and executable is still not "it ran". `bash "$BATS"` on an EMPTY
# run-bats.sh exits 0 having printed nothing, and the dispatcher printed
# `=== bats ===`, a blank line, and a green summary -- the same green-either-way
# defect one spelling over. Truncation, a partial write, an editor saving an
# empty buffer, and a `set -e` abort in a future run-bats.sh preamble all land
# there. So the runner's own summary line is required, and its count must be
# non-zero: that line is run-bats.sh's contract with this script, and it is only
# emitted after run-bats.sh's own zero-count guard has passed.
#
# Stdout is captured (the summary is on stdout) while stderr passes straight
# through, so a failing runner's diagnostics still reach the terminal live. The
# capture costs no streaming that was not already lost: run-bats.sh buffers its
# per-file output and flushes it at the end regardless.
run_bats() {
  if [[ ! -x "$BATS" ]]; then
    echo "Error: bats runner not found or not executable at $BATS — the bats suite cannot be skipped silently" >&2
    exit 1
  fi
  echo "=== bats ==="
  local out rc=0 summary count
  out="$(bash "$BATS")" || rc=$?
  [[ -z "$out" ]] || printf '%s\n' "$out"
  echo ""
  if [[ $rc -ne 0 ]]; then
    exit "$rc"
  fi
  summary="$(printf '%s\n' "$out" | grep -E '^[0-9]+ tests, [0-9]+ failures$' | tail -n 1 || true)"
  if [[ -z "$summary" ]]; then
    echo "Error: $BATS exited 0 without reporting an 'N tests, M failures' summary — it ran but produced nothing, so the bats suite was not verified" >&2
    exit 1
  fi
  count="${summary%% *}"
  if [[ "$count" -eq 0 ]]; then
    echo "Error: $BATS reported 0 tests — the bats suite executed nothing" >&2
    exit 1
  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.
#
# apm_modules/ is excluded for the same reason tests/run-bats.sh excludes it:
# `apm install` materializes dependency copies of this repo's own plugins there,
# and re-running a dependency's tests re-runs what plugins/ already covers.
SCRIPTS=()
while IFS= read -r script; do
  SCRIPTS+=("$script")
done < <(
  find "$SEARCH_ROOT" -name "test-*.sh" \
    -not -path "*/.git/*" \
    -not -path "*/.claude/worktrees/*" \
    -not -path "*/apm_modules/*" \
    | 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. Dispatch and
# throttling is scripts/lib/batch-run.sh's batch_run -- shared with
# scripts/sync-plugin-content.sh and tests/run-bats.sh so a batching bug fix
# only needs to land once; see that file for why this is batched rather than a
# rolling `wait -n` pool.
SCRATCH_ROOT="$(mktemp -d)"
trap 'rm -rf "$SCRATCH_ROOT"' EXIT
# The source= path below is repo-root-relative, matching scripts/install.sh:5 --
# NOT script-dir-relative. The source-path used to resolve it is the cwd
# pre-commit invokes the linter from, which is the repo root, so `lib/...`
# (resolving to a nonexistent tests/lib/) and `../scripts/...` (escaping the repo
# entirely) both fail. Both spellings were live until issue #97, and neither was
# visible: the resulting SC1091 is `info` while .pre-commit-config.yaml pins
# `--severity=warning`. A directive that does not resolve also blinds
# test-vale-wrap.sh's `sourced_files()` exemption, which reads these same
# directives to find array seeding that lives in the sourced file.
#
# Do not start a comment line here with the linter's name -- it is parsed as a
# directive and errors out (SC1073).
# shellcheck source=scripts/lib/batch-run.sh
source "$REPO_ROOT/scripts/lib/batch-run.sh"

declare -a batch_args=()
idx=0
for script in ${SCRIPTS[@]+"${SCRIPTS[@]}"}; do
  idx=$((idx + 1))
  cmd="$(printf 'rc=0; bash %q || rc=$?; echo "$rc" >%q' "$script" "$SCRATCH_ROOT/$idx.status")"
  batch_args+=("$idx" "$cmd")
done
batch_run "$SCRATCH_ROOT" ${batch_args[@]+"${batch_args[@]}"}

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)"
  # String comparison, not `-eq`. `-eq` is arithmetic, and bash evaluates an
  # empty string as 0 there -- `[[ "" -eq 0 ]]` is true -- so an *empty* status
  # file counted as a pass. The `|| echo 1` fallback above only covers a
  # *missing* file; a file that exists but is empty is what you get when the job
  # is killed between the `>` truncating it and the `echo` completing, or on
  # ENOSPC. Under `==` an empty status falls through to FAILED, which is the only
  # safe reading of "the job did not report a result".
  if [[ "$rc" == "0" ]]; then
    PASSED=$((PASSED + 1))
  elif [[ "$rc" == "$SKIP_EXIT" ]]; then
    SKIPPED+=("$rel")
    # Capture WHY, not just that. The reason is printed by the suite itself and
    # is otherwise swallowed with the rest of its log, which leaves the reader
    # knowing something was skipped but not which binary to install. There is no
    # single house format for it -- three suites print `SKIP: <reason>` on stdout
    # and one prints `apm not installed -- skipping (...)` on stderr -- so this
    # tries the shapes in decreasing order of confidence and falls back to the
    # last thing the suite said before exiting 77, which for a guard that exits
    # immediately is the reason by construction. batch-run.sh folds stderr into
    # the same log, so the stderr spelling is reachable here.
    reason="$(grep -E '^[[:space:]]*SKIP' "$SCRATCH_ROOT/$idx.log" 2>/dev/null | head -n 1 || true)"
    if [[ -z "$reason" ]]; then
      reason="$(grep -iE 'skip' "$SCRATCH_ROOT/$idx.log" 2>/dev/null | head -n 1 || true)"
    fi
    if [[ -z "$reason" ]]; then
      reason="$(grep -vE '^[[:space:]]*$' "$SCRATCH_ROOT/$idx.log" 2>/dev/null | tail -n 1 || true)"
    fi
    if [[ -z "$reason" ]]; then
      reason="(exited $SKIP_EXIT without printing a reason)"
    fi
    # Trimmed of leading whitespace so the reasons line up under their suite
    # names regardless of how each suite indents its own message.
    SKIP_REASONS+=("${reason#"${reason%%[![:space:]]*}"}")
  else
    FAILED+=("$rel")
  fi
  echo ""
done

echo "=== Summary: $PASSED passed, ${#SKIPPED[@]} skipped, ${#FAILED[@]} failed ==="
# Suppressed under --strict: the strict block below reports the same suites with
# the same reasons, and printing both left the reader scrolling past one list to
# reach an identical one. Under strict the failure block IS the list.
if [[ ${#SKIPPED[@]} -gt 0 && "$STRICT" != true ]]; then
  echo "Skipped scripts:"
  sidx=0
  for s in ${SKIPPED[@]+"${SKIPPED[@]}"}; do
    echo "  $s"
    echo "      ${SKIP_REASONS[$sidx]}"
    sidx=$((sidx + 1))
  done
fi

RC=0
if [[ ${#FAILED[@]} -gt 0 ]]; then
  echo "Failed scripts:"
  for s in ${FAILED[@]+"${FAILED[@]}"}; do
    echo "  $s"
  done
  RC=1
fi

# Strict mode turns every skip into a failure. Reported separately from FAILED
# above rather than folded into it: a skipped suite did not fail, the machine
# did, and a message that says so points at the fix. Named with reasons again
# here (not just referenced) because this block goes to stderr and is what a
# pre-push reader actually gets handed.
if [[ "$STRICT" == true && ${#SKIPPED[@]} -gt 0 ]]; then
  echo "Error: --strict and ${#SKIPPED[@]} suite(s) skipped. Run as a gate, a skip is a SETUP ERROR on this machine, not a legitimate state: AGENTS.md documents vale, apm and jq as required pre-push dependencies, so every suite is expected to be runnable here. Install what each suite names below and re-run; do not skip the hook." >&2
  sidx=0
  for s in ${SKIPPED[@]+"${SKIPPED[@]}"}; do
    echo "  $s" >&2
    echo "      ${SKIP_REASONS[$sidx]}" >&2
    sidx=$((sidx + 1))
  done
  RC=1
fi

exit "$RC"