name: Release

on:
  push:
    branches:
      - main

concurrency:
  group: release-main
  cancel-in-progress: false

permissions:
  contents: write
  pull-requests: read

jobs:
  publish:
    name: Publish stable release
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v7
        with:
          fetch-depth: 0

      - name: Setup Node.js
        uses: actions/setup-node@v6
        with:
          node-version: 24
          cache: npm
          registry-url: https://registry.npmjs.org

      - name: Install dependencies
        run: npm ci

      - name: Resolve release bump from PR labels
        id: bump
        uses: actions/github-script@v9
        with:
          script: |
            const { data: pulls } = await github.rest.repos.listPullRequestsAssociatedWithCommit({
              owner: context.repo.owner,
              repo: context.repo.repo,
              commit_sha: context.sha,
            });

            const mergedPr = pulls.find((pr) => pr.merged_at);
            const labels = mergedPr?.labels?.map((label) => label.name.toLowerCase()) ?? [];

            // Label names map to npm semver bumps:
            // - minor label  -> patch bump (1.0.0 -> 1.0.1)
            // - patch label  -> minor bump (1.0.0 -> 1.1.0)
            // - major label  -> major bump (1.0.0 -> 2.0.0)
            // - no label     -> same as minor label
            let bump = "patch";

            if (labels.includes("major")) {
              bump = "major";
            } else if (labels.includes("patch")) {
              bump = "minor";
            } else if (labels.includes("minor")) {
              bump = "patch";
            }

            const bumpSource = !mergedPr
              ? "no merged PR found (default: minor label)"
              : labels.length === 0
                ? `PR #${mergedPr.number} has no labels (default: minor label)`
                : `PR #${mergedPr.number} labels: ${labels.join(", ")}`;

            core.info(`Release bump: ${bump} (${bumpSource})`);
            core.setOutput("bump", bump);
            core.setOutput("source", bumpSource);

      - name: Resolve version
        id: version
        run: |
          BUMP="${{ steps.bump.outputs.bump }}"

          PKG_VERSION=$(node -p "require('./package.json').version")

          if npm view "@thiagopi/ts-utils-kit@${PKG_VERSION}" version >/dev/null 2>&1; then
            NPM_LATEST=$(npm view "@thiagopi/ts-utils-kit" version)
            echo "Version ${PKG_VERSION} is already on npm. Bumping from ${NPM_LATEST} (${BUMP})."
            npm version "${NPM_LATEST}" --no-git-tag-version --allow-same-version
            npm version "${BUMP}" --no-git-tag-version
          fi

          VERSION=$(node -p "require('./package.json').version")
          TAG="v${VERSION}"

          while npm view "@thiagopi/ts-utils-kit@${VERSION}" version >/dev/null 2>&1 || git rev-parse "${TAG}" >/dev/null 2>&1; do
            echo "Version ${VERSION} is already published or tagged. Bumping patch."
            npm version patch --no-git-tag-version
            VERSION=$(node -p "require('./package.json').version")
            TAG="v${VERSION}"
          done

          echo "version=${VERSION}" >> "$GITHUB_OUTPUT"
          echo "tag=${TAG}" >> "$GITHUB_OUTPUT"
        env:
          NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}

      - name: Test
        run: npm test

      - name: Build
        run: npm run build

      - name: Publish to npm
        run: npm publish --tag latest --access public
        env:
          NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}

      - name: Add install instructions to job summary
        run: |
          {
            echo "## Release published"
            echo ""
            echo "Version bump: \`${{ steps.bump.outputs.bump }}\` (${{ steps.bump.outputs.source }})"
            echo ""
            echo "Install this version:"
            echo ""
            echo '```bash'
            echo "npm install @thiagopi/ts-utils-kit@${{ steps.version.outputs.version }}"
            echo '```'
            echo ""
            echo "Or install the latest stable tag:"
            echo ""
            echo '```bash'
            echo "npm install @thiagopi/ts-utils-kit@latest"
            echo '```'
          } >> "$GITHUB_STEP_SUMMARY"

      - name: Create GitHub release
        uses: softprops/action-gh-release@v3
        with:
          tag_name: ${{ steps.version.outputs.tag }}
          name: ${{ steps.version.outputs.tag }}
          generate_release_notes: true
          body: |
            ## Install

            Install this version:

            ```bash
            npm install @thiagopi/ts-utils-kit@${{ steps.version.outputs.version }}
            ```

            Or install the latest stable tag:

            ```bash
            npm install @thiagopi/ts-utils-kit@latest
            ```