name: Update mappings

on:
  workflow_dispatch:
    inputs:
      source_ref:
        description: NTE_Assets branch, tag, or commit
        required: true
        default: main
        type: string

permissions:
  contents: write
  pull-requests: write

concurrency:
  group: update-mappings
  cancel-in-progress: false

jobs:
  update:
    name: Rebuild mappings from NTE_Assets
    runs-on: ubuntu-latest

    env:
      AUTOMATION_BRANCH: dev/automated-mapping-update-${{ github.ref_name }}
      NTE_ASSETS_REF: ${{ inputs.source_ref }}
      GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}

    steps:
      - name: Checkout source code
        uses: actions/checkout@v5
        with:
          fetch-depth: 0
          ref: ${{ github.ref_name }}

      - name: Get Python
        uses: actions/setup-python@v6
        with:
          python-version: "3.12"

      - name: Install project
        run: python -m pip install -e .

      - name: Rebuild mappings
        run: python tools/update_mappings.py --source-ref "$NTE_ASSETS_REF" --apply

      - name: Run tests
        run: python -m unittest discover -s tests

      - name: Summarize mapping changes
        id: changes
        shell: bash
        run: |
          python - <<'PY'
          import json
          import os
          from pathlib import Path

          report = json.loads(Path("build/mapping-update/mapping-update-report.json").read_text())
          changes = report["changes"]
          changed = sum(changes.values()) > 0
          with Path(os.environ["GITHUB_OUTPUT"]).open("a", encoding="utf-8") as output:
              output.write(f"changed={'true' if changed else 'false'}\n")
          with Path(os.environ["GITHUB_STEP_SUMMARY"]).open("a", encoding="utf-8") as summary:
              summary.write("## NTE_Assets mapping update\n\n")
              summary.write(f"Source ref: `{report['source_ref']}`\n\n")
              summary.write(f"- Additions: {changes['additions']}\n")
              summary.write(f"- Updates: {changes['updates']}\n")
              summary.write(f"- Deletions: {changes['deletions']}\n")
          PY

      - name: Upload review report
        uses: actions/upload-artifact@v6
        with:
          name: mapping-update-report
          path: build/mapping-update/mapping-update-report.json

      - name: Commit and push mapping changes
        if: steps.changes.outputs.changed == 'true'
        shell: bash
        run: |
          git config user.name "github-actions[bot]"
          git config user.email "41898282+github-actions[bot]@users.noreply.github.com"
          git checkout -B "$AUTOMATION_BRANCH"
          git add mappings/arcs.json mappings/characters.json mappings/items.json mappings/achievements.json
          git commit -m "chore: update mappings from NTE_Assets"
          git push --force origin "HEAD:refs/heads/$AUTOMATION_BRANCH"

      - name: Open or update pull request
        if: steps.changes.outputs.changed == 'true'
        shell: bash
        env:
          BASE_BRANCH: ${{ github.ref_name }}
          RUN_URL: ${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }}
        run: |
          python - <<'PY'
          import json
          import os
          from pathlib import Path

          report = json.loads(Path("build/mapping-update/mapping-update-report.json").read_text())
          changes = report["changes"]
          body = (
              "Automated authoritative reward-mapping snapshot from "
              "[Waifus-Grace/NTE_Assets](https://github.com/Waifus-Grace/NTE_Assets).\n\n"
              f"Source ref: `{report['source_ref']}`\n\n"
              f"- {changes['additions']} additions\n"
              f"- {changes['updates']} updates\n"
              f"- {changes['deletions']} deletions\n\n"
              "The workflow rebuilt all reward and achievement mappings, resolved English text through "
              "`Localization/en/game.json`, and passed the complete test suite. Pool mapping "
              "files and UID inputs were not changed.\n\n"
              f"[Workflow run]({os.environ['RUN_URL']})\n"
          )
          Path("build/mapping-update/pull-request-body.md").write_text(body, encoding="utf-8")
          PY

          pr_number="$(gh pr list \
            --head "$AUTOMATION_BRANCH" \
            --base "$BASE_BRANCH" \
            --state open \
            --json number \
            --jq '.[0].number // empty')"

          if [ -n "$pr_number" ]; then
            gh pr edit "$pr_number" \
              --title "chore: update mappings from NTE_Assets" \
              --body-file build/mapping-update/pull-request-body.md
          else
            gh pr create \
              --head "$AUTOMATION_BRANCH" \
              --base "$BASE_BRANCH" \
              --title "chore: update mappings from NTE_Assets" \
              --body-file build/mapping-update/pull-request-body.md
          fi