#!/usr/bin/env bash
# 前端构建和 CSS 检查，带依赖缓存：node_modules 按「锁文件 + package.json」的哈希缓存起来，同样的依赖不再 npm ci（约 20 秒）；
# 展示端和管理端并行构建。缓存里放的是硬链接副本（cp -al），恢复几乎是瞬间；依赖变了才重新安装并更新缓存，只留最近 3 份。
set -euo pipefail

root="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
cache="${MOSHIRO_CI_CACHE:-/home/justme/woodpecker/cache/web-node-modules}"
export NPM_CONFIG_CACHE="${NPM_CONFIG_CACHE:-/home/justme/.npm}"
web="$root/web"
dirs=(node_modules display/node_modules admin/node_modules)
mkdir -p "$cache"
exec 9> "$cache/.lock"

# 开发构建会把版本号写进 package.json；缓存键里去掉 version 行，否则每个提交都是新的键，缓存永远命中不了
key="$(cat "$web/package-lock.json" "$web/package.json" "$web/display/package.json" "$web/admin/package.json" | grep -v '^  "version":' | sha256sum | cut -c1-16)"

restore() {
  [[ -d "$cache/$key/node_modules" ]] || return 1
  local d
  for d in "${dirs[@]}"; do
    [[ -d "$cache/$key/$d" ]] || continue
    mkdir -p "$(dirname "$web/$d")"
    cp -al "$cache/$key/$d" "$web/$d" 2>/dev/null || cp -a "$cache/$key/$d" "$web/$d"
  done
}

save() {
  local tmp="$cache/$key.tmp.$$" d
  rm -rf "$tmp"
  for d in "${dirs[@]}"; do
    [[ -d "$web/$d" ]] || continue
    mkdir -p "$(dirname "$tmp/$d")"
    cp -al "$web/$d" "$tmp/$d" 2>/dev/null || cp -a "$web/$d" "$tmp/$d"
  done
  rm -rf "$cache/$key"
  mv "$tmp" "$cache/$key"
  # 只留最近用过的 3 份
  (cd "$cache" && ls -1t | grep -v '\.tmp\.' | tail -n +4 | xargs -r rm -rf)
}

# 并行的 workflow（web-build 和开发镜像里的前端构建）会同时读写这份缓存：恢复和保存期间持锁
flock -w 600 9 || { echo "could not get the node_modules cache lock" >&2; exit 1; }
if restore; then
  echo "restored node_modules from the cache ($key)"
else
  echo "no cache for $key; running npm ci"
  rm -rf "$web/node_modules" "$web/display/node_modules" "$web/admin/node_modules"
  npm ci --prefix "$web" --prefer-offline
  save || echo "could not save the node_modules cache" >&2
fi
flock -u 9

# 展示端和管理端并行构建，再检查 CSS
pids=()
(cd "$web" && timeout 600 npm run build -w display) & pids+=($!)
(cd "$web" && timeout 600 npm run build -w admin) & pids+=($!)
failed=0
for pid in "${pids[@]}"; do wait "$pid" || failed=1; done
[[ "$failed" == 0 ]] || { echo "web build failed" >&2; exit 1; }
[[ -n "${WEB_SKIP_LINT:-}" ]] || npm run lint:css --prefix "$web"
# 开发构建（main 上带 [CI] 的提交）：前端是这条流水线的唯一一份，放进共享目录，开发镜像的 Backend 直接用（见 ci/shared-web.sh）
[[ -z "${WEB_PUBLISH_SHARED:-}" ]] || bash "$root/ci/shared-web.sh" publish