# Publish a date-based release every time master moves — and keep HACS able to
# see every one of them (t42).
#
# Versioning is date-based: vYYYY.MM.DD, plus a same-day suffix (YYYY.MM.DD.N)
# for further releases in the same UTC day. The decision lives in
# scripts/determine-release-version.sh so it can be tested locally:
#   the manifest `version` is untagged  -> that version (bump it to force one)
#   else today's UTC date is untagged   -> vYYYY.MM.DD
#   else                                -> vYYYY.MM.DD.N, lowest untagged N >= 2
#
# Why the write-back below exists: the resolved version is written into
# custom_components/nvidia_shield/manifest.json and committed BEFORE the tag, so
# the released artifact and its tag always agree. Without it HACS compares the
# installed version against a manifest that never moves — v2026.10.09 was
# published while master's manifest still said 2026.10.08, so the second release
# of that day was offered to nobody.
#
# The Gitea release carries a nvidia_shield.zip asset (custom_components/
# nvidia_shield/) so the integration is installable manually from any release.
#
# No hand-made secrets are required: Gitea mints a token for every job and
# exposes it as secrets.GITEA_TOKEN.

name: Release

on:
  push:
    branches: [master]
  # Manual runs, for the first release (no tags yet) or to re-publish after a
  # partial failure.
  workflow_dispatch:

# One release at a time. Two pushes in quick succession would otherwise race to
# tag the same commit; a later run dedupes safely instead of interleaving.
concurrency:
  group: release-master
  cancel-in-progress: false

permissions:
  # The job token pushes the manifest commit and the tag, and creates the release.
  contents: write

env:
  ZIP_NAME: nvidia_shield.zip
  MANIFEST: custom_components/nvidia_shield/manifest.json

jobs:
  release:
    runs-on: ubuntu-latest
    # t42: this job pushes the write-back commit itself, and a run starting from
    # that commit would release the same version twice. Two layers guard it: the
    # commit message carries the conventional `[skip ci]` marker, and this
    # condition re-checks the pushed message, so the guard still holds if a Gitea
    # version stops honouring the marker. workflow_dispatch has no head_commit,
    # hence the first clause.
    if: >-
      github.event_name == 'workflow_dispatch' ||
      !contains(github.event.head_commit.message || '', '[skip ci]')
    steps:
      - uses: actions/checkout@v4
        with:
          # Tags drive versioning decisions, so the clone must carry them.
          fetch-depth: 0
          ref: master
          token: ${{ secrets.GITEA_TOKEN }}

      - name: Determine the release version
        id: version
        run: |
          set -euo pipefail
          # VERSION/TAG/SOURCE/BUMP/RELEASE go to stdout and, because GITHUB_OUTPUT
          # is set inside a step, to this job's outputs too. RELEASE=no means the
          # version already exists: tag and publish nothing.
          scripts/determine-release-version.sh

      - name: Write the version back into the manifest
        id: bump
        if: steps.version.outputs.RELEASE == 'yes' && steps.version.outputs.BUMP == 'yes'
        env:
          VERSION: ${{ steps.version.outputs.VERSION }}
        run: |
          set -euo pipefail
          git config user.name  "gitea-actions"
          git config user.email "actions@notexpectedyet.com"

          python3 - "$MANIFEST" "$VERSION" <<'PY'
          import json, pathlib, sys
          path, version = pathlib.Path(sys.argv[1]), sys.argv[2]
          data = json.loads(path.read_text(encoding="utf-8"))
          data["version"] = version
          path.write_text(json.dumps(data, indent=2) + "\n", encoding="utf-8")
          PY

          git add "$MANIFEST"
          git commit -m "chore(release): v${VERSION} [skip ci]"

          # Never tag a commit whose manifest the default branch does not carry:
          # a branch protection rule (or a push that landed underneath this run)
          # rejecting this push makes the release impossible, so stop loudly and
          # say what to do instead of publishing an inconsistent artifact.
          if ! git push origin HEAD:master; then
            echo "::error::could not push the release commit for v${VERSION}: the" \
              "default branch rejected it (branch protection, or it moved during" \
              "this run). Nothing was tagged or published. Bump ${MANIFEST} to" \
              "${VERSION} manually, commit it, and re-run this workflow." >&2
            exit 1
          fi

      - name: Verify the released manifest on master
        if: steps.version.outputs.RELEASE == 'yes'
        env:
          VERSION: ${{ steps.version.outputs.VERSION }}
        run: |
          set -euo pipefail
          # Read the manifest from the REMOTE default branch, not from the
          # workspace: that is the copy HACS fetches, and it has to already carry
          # the version about to be tagged.
          git fetch --quiet origin master
          REMOTE_VERSION="$(git show "origin/master:${MANIFEST}" | jq -r '.version')"
          if [ "$REMOTE_VERSION" != "$VERSION" ]; then
            echo "::error::master's manifest says ${REMOTE_VERSION} but v${VERSION}" \
              "is being released — refusing to publish an inconsistent artifact." \
              "Re-run once master settles." >&2
            exit 1
          fi
          echo "master's manifest is ${REMOTE_VERSION}, matching v${VERSION}"

      - name: Create tag
        if: steps.version.outputs.RELEASE == 'yes'
        env:
          TAG: ${{ steps.version.outputs.TAG }}
        run: |
          set -euo pipefail
          git config user.name  "gitea-actions"
          git config user.email "actions@notexpectedyet.com"
          # HEAD is the commit the manifest was just verified on: the bumped one
          # when a write-back was needed, else the pushed commit itself. The tag
          # and the artifact therefore name the same version.
          git tag -a "${TAG}" -m "Release ${TAG}"
          git push origin "refs/tags/${TAG}"

      - name: Build the release zip
        if: steps.version.outputs.RELEASE == 'yes'
        run: |
          set -euo pipefail
          cd custom_components
          zip -r "../${ZIP_NAME}" nvidia_shield

      - name: Publish the release
        if: steps.version.outputs.RELEASE == 'yes'
        env:
          VERSION: ${{ steps.version.outputs.VERSION }}
          TAG: ${{ steps.version.outputs.TAG }}
          SERVER: ${{ github.server_url }}
          REPO: ${{ github.repository }}
          TOKEN: ${{ secrets.GITEA_TOKEN }}
        run: |
          set -euo pipefail

          # Notes: subject lines of the commits in the released range.
          PREV="$(git describe --tags --abbrev=0 "${TAG}^" 2>/dev/null || true)"
          if [ -n "$PREV" ]; then
            RANGE="${PREV}..${TAG}"
          else
            RANGE="${TAG}"
          fi
          {
            echo "Release ${TAG}"
            echo
            git log --pretty=format:'- %s' "$RANGE"
          } > /tmp/notes.md

          # The body is built by an encoder rather than by string interpolation:
          # release notes are multi-line markdown and quoting them into JSON by
          # hand is a reliable way to publish a malformed release.
          python3 - <<'PY' > /tmp/release.json
          import json, os
          with open('/tmp/notes.md', encoding='utf-8') as handle:
              body = handle.read()
          print(json.dumps({
              'tag_name': 'v' + os.environ['VERSION'],
              'name': 'v' + os.environ['VERSION'],
              'body': body,
              'draft': False,
              'prerelease': False,
          }))
          PY

          status="$(curl -sS -o /tmp/release-response.json -w '%{http_code}' \
            -X POST "${SERVER}/api/v1/repos/${REPO}/releases" \
            -H "Authorization: token ${TOKEN}" \
            -H 'Content-Type: application/json' \
            --data-binary @/tmp/release.json)"

          RELEASE_ID="$(jq -r '.id // empty' /tmp/release-response.json)"
          # 409 is "a release for this tag already exists": resolve the existing
          # release instead of failing, so the zip still gets attached.
          if [ -z "$RELEASE_ID" ]; then
            RELEASE_ID="$(curl -sS "${SERVER}/api/v1/repos/${REPO}/releases/tags/${TAG}" \
              -H "Authorization: token ${TOKEN}" | jq -r '.id')"
          else
            if [ "$status" != "201" ] && [ "$status" != "200" ]; then
              echo "release creation failed (HTTP ${status})" >&2
              cat /tmp/release-response.json >&2
              exit 1
            fi
          fi
          case "$RELEASE_ID" in
            ''|*[!0-9]*)
              echo "could not resolve a release id for ${TAG} (HTTP ${status})" >&2
              cat /tmp/release-response.json >&2
              exit 1
              ;;
          esac
          echo "release id: ${RELEASE_ID}"

          curl -sS -o /tmp/asset-response.json \
            -X POST "${SERVER}/api/v1/repos/${REPO}/releases/${RELEASE_ID}/assets?name=${ZIP_NAME}" \
            -H "Authorization: token ${TOKEN}" \
            -F "attachment=@${ZIP_NAME}"
          echo "published ${TAG} with ${ZIP_NAME}"