#!/usr/bin/env bash

PWA_FIXTURE_ROOT=""

pwa_build_candidate() {
  local client_dir="$1"
  local label="$2"
  local build_sha="$3"
  local output_dir="$4"
  local log_file="$5"
  local build_status=0

  (
    cd "$client_dir"
    NODE_ENV=production VITE_BUILD_SHA="$build_sha" npx vite build --outDir "$output_dir" --emptyOutDir
  ) > "$log_file" 2>&1 || build_status="$?"

  if [[ "$build_status" -ne 0 ]]; then
    echo "[pwa-cross-version][ERROR] build=${label} exit=${build_status}" >&2
    return "$build_status"
  fi
  if [[ ! -f "$output_dir/index.html" || ! -f "$output_dir/sw.js" ]]; then
    echo "[pwa-cross-version][ERROR] build=${label} required_artifact_missing" >&2
    return 1
  fi
  echo "[pwa-cross-version] build=${label} status=PASS"
}

pwa_prepare_fixture() {
  local client_dir="$1"
  local report_dir="$2"
  if [[ -n "$PWA_FIXTURE_ROOT" ]]; then
    echo "[pwa-cross-version][ERROR] fixture_already_owned" >&2
    return 1
  fi
  mkdir -p "$report_dir" || return "$?"
  PWA_FIXTURE_ROOT="$(mktemp -d "${TMPDIR:-/tmp}/hyb-pwa-cross-version.XXXXXX")" || return "$?"
  PWA_BUILD_A_DIR="$PWA_FIXTURE_ROOT/build-a"
  PWA_BUILD_B_DIR="$PWA_FIXTURE_ROOT/build-b"
  PWA_BUILD_A_SHA="111111111111"
  PWA_BUILD_B_SHA="222222222222"
  pwa_build_candidate "$client_dir" A "$PWA_BUILD_A_SHA" "$PWA_BUILD_A_DIR" "$report_dir/pwa-build-a.log" || return "$?"
  pwa_build_candidate "$client_dir" B "$PWA_BUILD_B_SHA" "$PWA_BUILD_B_DIR" "$report_dir/pwa-build-b.log" || return "$?"
}

pwa_with_fixture() {
  if [[ -z "$PWA_FIXTURE_ROOT" || ! -f "${PWA_BUILD_A_DIR:-}/sw.js" || ! -f "${PWA_BUILD_B_DIR:-}/sw.js" ]]; then
    echo "[pwa-cross-version][ERROR] fixture_not_ready" >&2
    return 1
  fi
  PWA_BUILD_A_DIR="$PWA_BUILD_A_DIR" PWA_BUILD_B_DIR="$PWA_BUILD_B_DIR" \
    PWA_BUILD_A_SHA="$PWA_BUILD_A_SHA" PWA_BUILD_B_SHA="$PWA_BUILD_B_SHA" "$@"
}

pwa_cleanup_fixture() {
  if [[ -z "$PWA_FIXTURE_ROOT" ]]; then
    return 0
  fi
  if [[ "$(basename "$PWA_FIXTURE_ROOT")" != hyb-pwa-cross-version.* ]]; then
    echo "[pwa-cross-version][ERROR] fixture_cleanup_refused" >&2
    return 1
  fi
  if [[ -d "$PWA_FIXTURE_ROOT" ]]; then
    find "$PWA_FIXTURE_ROOT" -xdev -depth -delete || return "$?"
  fi
  PWA_FIXTURE_ROOT=""
}