name: preview-slot-reclaim

on:
  schedule:
    - cron: "15 * * * *"
  workflow_dispatch:
    inputs:
      repo:
        description: "owner/repo (optional)"
        required: false
        type: string
      branch:
        description: "Branch to release (optional)"
        required: false
        type: string
      issue:
        description: "Issue number to release (optional)"
        required: false
        type: string

jobs:
  reclaim:
    runs-on: ubuntu-latest
    env:
      PREVIEW_SLOTS: ${{ vars.PREVIEW_SLOTS }}
      PREVIEW_STATE_FILE: .tmp/preview-slots.json
    steps:
      - name: Checkout
        uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Setup Python
        uses: actions/setup-python@v5
        with:
          python-version: "3.11"

      - name: Release target or prune expired
        shell: bash
        run: |
          SLOTS="${PREVIEW_SLOTS:-preview-a,preview-b}"
          REPO_INPUT="${{ inputs.repo }}"
          BRANCH_INPUT="${{ inputs.branch }}"
          ISSUE_INPUT="${{ inputs.issue }}"

          mkdir -p .tmp

          if [ -n "$REPO_INPUT" ] || [ -n "$BRANCH_INPUT" ] || [ -n "$ISSUE_INPUT" ]; then
            ISSUE_FLAG=""
            if [ -n "$ISSUE_INPUT" ]; then
              ISSUE_FLAG="--issue $ISSUE_INPUT"
            fi
            python skills/gitea-issue-devops-agent/scripts/preview_slot_allocator.py \
              --state-file "$PREVIEW_STATE_FILE" \
              --slots "$SLOTS" \
              --repo "$REPO_INPUT" \
              --branch "$BRANCH_INPUT" \
              $ISSUE_FLAG \
              --release > .tmp/slot-reclaim.json
          else
            python skills/gitea-issue-devops-agent/scripts/preview_slot_allocator.py \
              --state-file "$PREVIEW_STATE_FILE" \
              --slots "$SLOTS" \
              --list > .tmp/slot-reclaim.json
          fi

          cat .tmp/slot-reclaim.json

      - name: Persist state
        shell: bash
        run: |
          if [ ! -f "$PREVIEW_STATE_FILE" ]; then
            exit 0
          fi
          if [ -z "$(git status --porcelain -- "$PREVIEW_STATE_FILE")" ]; then
            exit 0
          fi

          git config user.name "gitea-actions"
          git config user.email "gitea-actions@local"
          git add "$PREVIEW_STATE_FILE"
          git commit -m "chore: reclaim preview slots [skip ci]" || true
          git push || true