name: Create Release

on:
  push:
    tags:
      - 'v*'  # Nur bei Tags wie v1.0.0, v2.0.0

jobs:
  release:
    runs-on: ubuntu-latest

    steps:
      - name: Enable debug output
        run: set -x

      - name: Checkout full history including tags
        uses: actions/checkout@v3
        with:
          fetch-depth: 0
          fetch-tags: true

      - name: Show environment variables for debugging
        run: |
          echo "GIT_REMOTE_URL=$(git config --get remote.origin.url)"
          echo "GITHUB_REF=$GITHUB_REF"

      - name: Extract OWNER and REPO from git remote URL
        id: repo-info
        run: |
          REMOTE_URL=$(git config --get remote.origin.url)
          OWNER=$(echo "$REMOTE_URL" | sed -E 's#.*/([^/]+)/([^/]+)(\.git)?#\1#')
          REPO=$(echo "$REMOTE_URL" | sed -E 's#.*/([^/]+)/([^/]+)(\.git)?#\2#')
          echo "OWNER=$OWNER" >> $GITHUB_ENV
          echo "REPO=$REPO" >> $GITHUB_ENV

      - name: Install git-chglog binary (no Go needed)
        run: |
          GIT_CHGLOG_VERSION="0.15.1"
          curl -sSL "https://github.com/git-chglog/git-chglog/releases/download/v${GIT_CHGLOG_VERSION}/git-chglog_${GIT_CHGLOG_VERSION}_linux_amd64.tar.gz" -o git-chglog.tar.gz
          tar -xzf git-chglog.tar.gz
          chmod +x git-chglog
          sudo mv git-chglog /usr/local/bin/

      - name: Determine current and previous tag
        id: tags
        run: |
          CURRENT_TAG="${GITHUB_REF##*/}"
          PREVIOUS_TAG=$(git describe --tags --abbrev=0 "${CURRENT_TAG}^" 2>/dev/null || true)

          echo "CURRENT_TAG=$CURRENT_TAG"
          echo "PREVIOUS_TAG=$PREVIOUS_TAG"

          echo "CURRENT_TAG=$CURRENT_TAG" >> $GITHUB_ENV
          echo "PREVIOUS_TAG=$PREVIOUS_TAG" >> $GITHUB_ENV

      - name: Generate CHANGELOG.md
        run: |
          # Optional: kompletter Changelog (nicht für Release-Body)
          git-chglog -o CHANGELOG.md

          # Nur der relevante Abschnitt zwischen Tags
          if [ -n "$PREVIOUS_TAG" ]; then
            git-chglog "$PREVIOUS_TAG..$CURRENT_TAG" > RELEASE_BODY.md
          else
            git-chglog "$CURRENT_TAG" > RELEASE_BODY.md
          fi

          echo "Release changelog content:"
          cat RELEASE_BODY.md

      - name: Replace issue references with Markdown links
        env:
          OWNER: ${{ env.OWNER }}
          REPO: ${{ env.REPO }}
        run: |
          sed -i -E "s/([^\\[])#([0-9]+)/\1[#\2](https:\/\/dev.ksite.de\/${OWNER}\/${REPO}\/issues\/\2)/g" RELEASE_BODY.md

      - name: Create Gitea Release via API
        env:
          TOKEN: ${{ secrets.TOKEN }}
          OWNER: ${{ env.OWNER }}
          REPO: ${{ env.REPO }}
          CURRENT_TAG: ${{ env.CURRENT_TAG }}
        run: |
          # Base64-encode und sicher escapen für JSON
          BODY=$(base64 -w0 RELEASE_BODY.md)
          DECODED_BODY=$(echo "$BODY" | base64 -d | jq -Rs .)

          echo "Creating release for tag $CURRENT_TAG"

          curl -s -X POST "https://dev.ksite.de/api/v1/repos/${OWNER}/${REPO}/releases" \
            -H "Content-Type: application/json" \
            -H "Authorization: token $TOKEN" \
            -d @- <<EOF
          {
            "tag_name": "${CURRENT_TAG}",
            "name": "${REPO} ${CURRENT_TAG}",
            "body": ${DECODED_BODY}
          }
          EOF