name: Monitor TVBox JSON

on:
  schedule:
    # Run every 12 hours at 00:00 and 12:00 UTC.
    - cron: "0 */12 * * *"
  workflow_dispatch:

permissions:
  contents: write

concurrency:
  group: tvbox-json-monitor
  cancel-in-progress: false

jobs:
  update-tvbox-json:
    runs-on: ubuntu-latest

    env:
      TVBOX_URL: ${{ vars.TVBOX_URL }}
      TVBOX_UA: "okhttp/3.15"
      OUT_JSON: "data/tvbox.json"
      OUT_META: "data/tvbox.meta.json"

    steps:
      - name: Checkout repository
        uses: actions/checkout@v6

      - name: Validate repository variables
        run: |
          if [ -z "${TVBOX_URL}" ]; then
            echo "Repository variable TVBOX_URL is not set."
            exit 1
          fi

      - name: Extract and decode TVBox JSON
        id: extract
        run: |
          set +e
          python3 scripts/extract_tvbox.py
          status="$?"
          set -e

          if [ "${status}" -eq 0 ]; then
            echo "upstream_error=false" >> "${GITHUB_OUTPUT}"
            exit 0
          fi

          if [ "${status}" -eq 75 ]; then
            echo "upstream_error=true" >> "${GITHUB_OUTPUT}"
            exit 0
          fi

          exit "${status}"

      - name: Report skipped upstream update
        if: ${{ steps.extract.outputs.upstream_error == 'true' }}
        run: |
          {
            echo "### TVBox update skipped"
            echo
            echo "The upstream endpoint could not be fetched or decoded during this run."
            echo "Existing generated files were left unchanged."
          } >> "${GITHUB_STEP_SUMMARY}"

      - name: Validate generated files
        if: ${{ steps.extract.outputs.upstream_error == 'false' }}
        run: |
          python3 -m json.tool "${OUT_JSON}" > /dev/null
          python3 -m json.tool "${OUT_META}" > /dev/null

      - name: Commit and push changes
        if: ${{ steps.extract.outputs.upstream_error == 'false' }}
        run: |
          if git diff --quiet -- "${OUT_JSON}" "${OUT_META}"; then
            echo "No TVBox JSON update detected."
            exit 0
          fi

          git config user.name "github-actions[bot]"
          git config user.email "41898282+github-actions[bot]@users.noreply.github.com"

          git add "${OUT_JSON}" "${OUT_META}"

          COMMIT_TIME="$(date -u +'%Y-%m-%dT%H:%M:%SZ')"
          git commit -m "chore(tvbox): update decoded JSON ${COMMIT_TIME}"

          git push