name: Prepare Release

on:
  workflow_dispatch:
    inputs:
      version:
        description: Semantic version to release, with or without leading v.
        required: true

jobs:
  prepare:
    runs-on: ubuntu-latest
    container: docker.io/catthehacker/ubuntu:act-latest
    defaults:
      run:
        shell: bash
    env:
      RELEASE_TOKEN: ${{ secrets.GITHUB_TOKEN }}
    steps:
      - name: Checkout
        uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Setup Go
        uses: actions/setup-go@v5
        with:
          go-version: '1.26.1'
          check-latest: true
          cache: true
          cache-dependency-path: go.sum

      - name: Prepare release files
        env:
          RELEASE_VERSION: ${{ inputs.version }}
        run: |
          set -euo pipefail
          ./script/prepare-release.sh "$RELEASE_VERSION"

      - name: Run tests
        run: |
          set -euo pipefail
          go test ./...

      - name: Configure git author
        run: |
          set -euo pipefail
          git config user.name "gitea-actions[bot]"
          git config user.email "gitea-actions[bot]@users.noreply.local"

      - name: Commit release changes and push tag
        env:
          RELEASE_VERSION: ${{ inputs.version }}
        run: |
          set -euo pipefail

          normalized_version="${RELEASE_VERSION#v}"
          tag="v${normalized_version}"

          if git rev-parse "$tag" >/dev/null 2>&1; then
            echo "Tag ${tag} already exists" >&2
            exit 1
          fi

          case "$GITHUB_SERVER_URL" in
            https://*)
              authed_remote="https://oauth2:${RELEASE_TOKEN}@${GITHUB_SERVER_URL#https://}/${GITHUB_REPOSITORY}.git"
              ;;
            http://*)
              authed_remote="http://oauth2:${RELEASE_TOKEN}@${GITHUB_SERVER_URL#http://}/${GITHUB_REPOSITORY}.git"
              ;;
            *)
              echo "Unsupported GITHUB_SERVER_URL: ${GITHUB_SERVER_URL}" >&2
              exit 1
              ;;
          esac

          git remote set-url origin "$authed_remote"
          git add changelog.md internal/homesick/version/version.go
          git commit -m "release: prepare ${tag}"
          git tag "$tag"
          git push origin HEAD
          git push origin "$tag"