# Release build (ADR 0014, issue #89): pushing a semver tag `vX.Y.Z` builds
# and pushes the immutable release images and publishes a Gitea release
# whose notes list the changes since the previous release, with a call-out
# when the release contains database migrations (the `migration` marker the
# update guide promises). Deploying to Prod is a SEPARATE, manual step:
# after reviewing the release, push a `prod-vX.Y.Z-<suffix>` tag
# (prod-deploy.yml) — that tag push is the manual approval gate, since
# Gitea 1.22 has no environment approvals (revisit on 1.23+).

name: Release

on:
  push:
    tags: ['v*.*.*']

env:
  IMAGE_BASE: gitea.101010.cloud/stwaidele/dorfteich

jobs:
  build-release:
    name: Build release images and notes
    runs-on: ubuntu-latest
    steps:
      - name: Check out repository
        uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Log in to the Gitea registry
        run: printf '%s' "${{ secrets.REGISTRY_TOKEN }}" | tr -d '[:space:]' | docker login gitea.101010.cloud -u fable-5 --password-stdin

      - name: Build and push semver images
        run: |
          TAG=${GITHUB_REF_NAME}
          for app in web api collab backup; do
            docker build -f apps/$app/Dockerfile --build-arg APP_VERSION=$TAG \
              -t $IMAGE_BASE-$app:$TAG .
            docker push $IMAGE_BASE-$app:$TAG
          done

      - name: Generate release notes and publish the release
        run: |
          TAG=${GITHUB_REF_NAME}
          PREV=$(git tag --list 'v*.*.*' --sort=-v:refname | grep -vx "$TAG" | head -n1 || true)
          RANGE=${PREV:+$PREV..}$TAG
          {
            echo "## Changes since ${PREV:-the beginning}"
            echo
            git log --no-merges --pretty='- %s' $RANGE
            echo
            if git diff --name-only ${PREV:-$(git hash-object -t tree /dev/null)} $TAG -- apps/api/prisma/migrations/ | grep -q .; then
              echo '> ⚠️ **migration** — this release applies database migrations automatically at api start. Downgrade window: one minor release (docs/self-hosting).'
            else
              echo '_No database migrations in this release._'
            fi
          } > notes.md
          TAG=$TAG docker run --rm -i -e TAG node:22.15-alpine node -e \
            'const fs=require("fs");const body=fs.readFileSync(0,"utf8");process.stdout.write(JSON.stringify({tag_name:process.env.TAG,name:process.env.TAG,body}))' \
            < notes.md > release.json
          curl -sf -X POST \
            -H "Authorization: token ${{ github.token }}" \
            -H 'Content-Type: application/json' \
            --data @release.json \
            "${{ github.server_url }}/api/v1/repos/${{ github.repository }}/releases" \
            > /dev/null && echo "release $TAG published"