name: MoviePilot Builder v2
on:
  workflow_dispatch:
  push:
    branches:
      - v2
    paths:
      - 'version.py'

jobs:
  Docker-build:
    runs-on: ubuntu-latest
    name: Build Docker Image
    steps:
      - name: Checkout
        uses: actions/checkout@v4
        with:
          fetch-depth: 0
          fetch-tags: true

      - name: Release version
        id: release_version
        run: |
          app_version=$(cat version.py |sed -ne "s/APP_VERSION\s=\s'v\(.*\)'/\1/gp")
          echo "app_version=$app_version" >> $GITHUB_ENV

      - name: Docker Meta
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: |
            ${{ secrets.DOCKER_USERNAME }}/moviepilot-v2
            ${{ secrets.DOCKER_USERNAME }}/moviepilot
            ghcr.io/${{ github.repository }}
          tags: |
            type=raw,value=${{ env.app_version }}
            type=raw,value=latest

      - name: Set Up QEMU
        uses: docker/setup-qemu-action@v3

      - name: Set Up Buildx
        uses: docker/setup-buildx-action@v3

      - name: Login DockerHub
        uses: docker/login-action@v3
        with:
          username: ${{ secrets.DOCKER_USERNAME }}
          password: ${{ secrets.DOCKER_PASSWORD }}

      - name: Login GitHub Container Registry
        uses: docker/login-action@v3
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Build Image
        uses: docker/build-push-action@v5
        with:
          context: .
          file: docker/Dockerfile
          platforms: |
            linux/amd64
            linux/arm64/v8
          push: true
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          cache-from: type=gha, scope=${{ github.workflow }}-docker
          cache-to: type=gha, scope=${{ github.workflow }}-docker

      - name: Generate Changelog
        id: changelog
        run: |
          # 获取上一个 tag（排除当前版本的 tag）
          PREVIOUS_TAG=$(git tag -l 'v*' --sort=-v:refname | grep -v "^v${{ env.app_version }}$" | head -n 1)
          echo "Previous tag: $PREVIOUS_TAG"

          # 使用 || 作为分隔符，同时获取 commit 消息和作者 GitHub 用户名
          if [ -z "$PREVIOUS_TAG" ]; then
            COMMITS=$(git log --pretty=format:"%s||%an" HEAD)
          else
            COMMITS=$(git log --pretty=format:"%s||%an" ${PREVIOUS_TAG}..HEAD)
          fi

          # 分类收集 commit 消息（使用关联数组去重）
          declare -A SEEN
          FEATURES=""
          FIXES=""
          OTHERS=""

          while IFS= read -r line; do
            # 跳过空行
            if [ -z "$line" ]; then
              continue
            fi

            # 分离 commit 消息和作者
            msg=$(echo "$line" | sed 's/||[^|]*$//')
            author=$(echo "$line" | sed 's/.*||//')

            # 跳过 Merge commit 和版本更新 commit
            if echo "$msg" | grep -qE "^Merge pull request|^Merge branch|^更新 version"; then
              continue
            fi

            # 按 Conventional Commits 前缀分类
            if echo "$msg" | grep -qiE "^feat(\(.+\))?:"; then
              desc=$(echo "$msg" | sed -E 's/^feat(\([^)]*\))?:\s*//')
              category="FEATURES"
            elif echo "$msg" | grep -qiE "^fix(\(.+\))?:"; then
              desc=$(echo "$msg" | sed -E 's/^fix(\([^)]*\))?:\s*//')
              category="FIXES"
            elif echo "$msg" | grep -qiE "^(docs|style|refactor|perf|test|build|ci|chore|revert)(\(.+\))?:"; then
              desc=$(echo "$msg" | sed -E 's/^(docs|style|refactor|perf|test|build|ci|chore|revert)(\([^)]*\))?:\s*//')
              category="OTHERS"
            else
              desc="$msg"
              category="OTHERS"
            fi

            # 使用 "分类+描述" 作为去重的 key，跳过重复内容
            dedup_key="${category}::${desc}"
            if [ -n "${SEEN[$dedup_key]+x}" ]; then
              continue
            fi
            SEEN[$dedup_key]=1

            # 添加 by @author 引用
            entry="- ${desc} by @${author}"

            case "$category" in
              FEATURES) FEATURES="${FEATURES}${entry}\n" ;;
              FIXES)    FIXES="${FIXES}${entry}\n" ;;
              OTHERS)   OTHERS="${OTHERS}${entry}\n" ;;
            esac
          done <<< "$COMMITS"

          # 组装 changelog
          CHANGELOG=""

          if [ -n "$FEATURES" ]; then
            CHANGELOG="${CHANGELOG}### ✨ 新功能\n\n${FEATURES}\n"
          fi

          if [ -n "$FIXES" ]; then
            CHANGELOG="${CHANGELOG}### 🐛 修复\n\n${FIXES}\n"
          fi

          if [ -n "$OTHERS" ]; then
            CHANGELOG="${CHANGELOG}### 🔧 其他\n\n${OTHERS}\n"
          fi

          # 添加版本对比链接
          if [ -n "$PREVIOUS_TAG" ]; then
            CHANGELOG="${CHANGELOG}**完整更新记录**: https://github.com/${{ github.repository }}/compare/${PREVIOUS_TAG}...v${{ env.app_version }}"
          fi

          # 写入环境变量
          echo "CHANGELOG<<EOF" >> $GITHUB_ENV
          echo -e "$CHANGELOG" >> $GITHUB_ENV
          echo "EOF" >> $GITHUB_ENV

      - name: Get existing release body
        id: get_release_body
        continue-on-error: true
        run: |
          release_body=$(curl -s -H "Authorization: token ${{ secrets.GITHUB_TOKEN }}" \
            "https://api.github.com/repos/${{ github.repository }}/releases/tags/v${{ env.app_version }}" | \
            jq -r '.body // ""')

          # 如果已有手动编写的 release body，则保留；否则使用自动生成的 changelog
          if [ -n "$release_body" ] && [ "$release_body" != "null" ] && [ "$release_body" != "" ]; then
            echo "RELEASE_BODY<<EOF" >> $GITHUB_ENV
            echo "$release_body" >> $GITHUB_ENV
            echo "EOF" >> $GITHUB_ENV
          else
            echo "RELEASE_BODY<<EOF" >> $GITHUB_ENV
            echo "${{ env.CHANGELOG }}" >> $GITHUB_ENV
            echo "EOF" >> $GITHUB_ENV
          fi

      - name: Delete Release
        uses: dev-drprasad/delete-tag-and-release@v1.1
        continue-on-error: true
        with:
          tag_name: v${{ env.app_version }}
          delete_release: true
          github_token: ${{ secrets.GITHUB_TOKEN }}

      - name: Generate Release
        uses: softprops/action-gh-release@v2
        with:
          tag_name: v${{ env.app_version }}
          name: v${{ env.app_version }}
          body: ${{ env.RELEASE_BODY }}
          draft: false
          prerelease: false
          make_latest: true
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}