name: Print One

on:
  workflow_run:
    workflows: ["Prepare"]
    types:
      - completed

concurrency:
  group: print1-${{ github.repository }}
  cancel-in-progress: false

env:
  WORKSPACE_ROOT: "/data/workspace"

jobs:
  print:
    runs-on: standard-ubuntu-22
    if: ${{ github.event.workflow_run.conclusion == 'success' }}
    steps:
      - name: 将 Print One Worktree 对齐到上游提交
        run: |
          set -euo pipefail

          REPO_NAME="${{ github.event.repository.name }}"
          HEAD_SHA="${{ github.event.workflow_run.head_sha }}"
          REPOSITORY_DIR="${WORKSPACE_ROOT}/${REPO_NAME}/repository.git"
          WORKTREE_DIR="${WORKSPACE_ROOT}/${REPO_NAME}/worktrees/print1"
          WORKTREE_LOCK="${WORKSPACE_ROOT}/${REPO_NAME}/worktree-admin.lock"

          case "$HEAD_SHA" in
            ''|*[!0-9a-fA-F]*)
              echo "无效的上游提交 SHA: $HEAD_SHA" >&2
              exit 1
              ;;
          esac

          if [ ! -d "$REPOSITORY_DIR" ] || \
             [ "$(git --git-dir="$REPOSITORY_DIR" rev-parse --is-bare-repository)" != "true" ]; then
            echo "Prepare 未创建共享 bare 仓库: $REPOSITORY_DIR" >&2
            exit 1
          fi
          if ! git --git-dir="$REPOSITORY_DIR" cat-file -e "${HEAD_SHA}^{commit}"; then
            echo "共享仓库中不存在上游提交: $HEAD_SHA" >&2
            exit 1
          fi

          if [ ! -f "$WORKTREE_DIR/.git" ]; then
            if ! command -v flock >/dev/null 2>&1; then
              echo "首次创建 Worktree 需要 flock" >&2
              exit 1
            fi

            exec 9>"$WORKTREE_LOCK"
            flock 9

            if [ ! -f "$WORKTREE_DIR/.git" ]; then
              if [ -e "$WORKTREE_DIR" ]; then
                echo "Worktree 路径已存在但不是 linked worktree: $WORKTREE_DIR" >&2
                exit 1
              fi

              mkdir -p "$(dirname "$WORKTREE_DIR")"
              echo "首次创建 Print One Worktree: $WORKTREE_DIR"
              git --git-dir="$REPOSITORY_DIR" worktree add --detach "$WORKTREE_DIR" "$HEAD_SHA"
            fi

            flock -u 9
          fi

          COMMON_DIR=$(git -C "$WORKTREE_DIR" rev-parse --path-format=absolute --git-common-dir)
          if [ "$COMMON_DIR" != "$(realpath "$REPOSITORY_DIR")" ]; then
            echo "Print One Worktree 不属于共享仓库: $WORKTREE_DIR" >&2
            exit 1
          fi

          git -C "$WORKTREE_DIR" checkout --detach --force "$HEAD_SHA"
          git -C "$WORKTREE_DIR" reset --hard "$HEAD_SHA"
          git -C "$WORKTREE_DIR" clean -ffdx

          ACTUAL_SHA=$(git -C "$WORKTREE_DIR" rev-parse HEAD)
          if [ "$ACTUAL_SHA" != "$HEAD_SHA" ]; then
            echo "Worktree 提交不匹配: 期望 $HEAD_SHA，实际 $ACTUAL_SHA" >&2
            exit 1
          fi

          echo "Print One 使用仓库: $WORKTREE_DIR"
          git -C "$WORKTREE_DIR" log -1 --oneline

      - name: 每 10 秒打印一次数字
        run: |
          WORKTREE_DIR="${WORKSPACE_ROOT}/${{ github.event.repository.name }}/worktrees/print1"
          echo "[$(date '+%F %T')] Print One 启动 (仓库提交: $(git -C "$WORKTREE_DIR" rev-parse --short HEAD))"
          for i in $(seq 1 5); do
            echo "[$(date '+%F %T')] Print One -> $i"
            sleep 10
          done
          echo "[$(date '+%F %T')] Print One 完成"