on: [push]

env:
  PROJECT_NAME: github-actions-example
  PRODUCTION_BRANCH: develop

jobs:
  example:
    runs-on: ubuntu-latest
    permissions:
      contents: read
      deployments: write
    name: Example
    steps:
      - name: Checkout
        uses: actions/checkout@v4
      - name: set production branch
        run: |
          result=$(curl -sS -X PATCH \
            -H 'Content-Type: application/json' \
            -H 'Authorization: Bearer ${{ secrets.CLOUDFLARE_API_TOKEN }}' \
            -d '{ "production_branch": "${{ env.PRODUCTION_BRANCH }}" }' \
            https://api.cloudflare.com/client/v4/accounts/${{ secrets.CLOUDFLARE_ACCOUNT_ID }}/pages/projects/${{ env.PROJECT_NAME }})
          result=$(echo "$result" | jq  -r '
            if .success == true then
              "✅ Cloudflare Pages Production Branchの変更に成功しました。\n✨ \(.result.latest_deployment.production_branch)から\(.result.production_branch)に変更されました"
            else
              "❌ Cloudflare Pages Production Branchの変更に失敗しました。\n📝エラーコード: \(.errors[].code) \nエラーメッセージ: \(.errors[].message)" 
            end
            ')
          echo "$result"

          { echo 'summary<<EOF'
            echo "$result"
            echo 'EOF'
          } >> "$GITHUB_OUTPUT"
        id: set-production-branch
      - name: Publish to Cloudflare Pages
        if: steps.set-production-branch.outcome == 'success'
        uses: cloudflare/wrangler-action@v3
        with:
          # Explicit branch name needed because of: https://github.com/cloudflare/pages-action/issues/97
          apiToken: ${{ secrets.CLOUDFLARE_API_TOKEN }}
          accountId: ${{ secrets.CLOUDFLARE_ACCOUNT_ID }}
          command: pages deploy example --project-name=${{ env.PROJECT_NAME }} --branch=${{ github.head_ref || github.ref_name }}
        id: publish
      - name: generate alias url
        id: generate-alias-url
        if: ${{ github.head_ref || github.ref_name }} != '${{ env.PRODUCTION_BRANCH }}'
        env:
          BRANCH: ${{ github.ref_name }}
          PUBLISH_CFPAGES_URL: ${{ steps.publish.outputs.deployment-url }}
        run: |
          [[ $PUBLISH_CFPAGES_URL =~ (https?://)?([a-zA-Z0-9-]+)\.pages\.dev ]]
          invalid_chars_regex='[^a-z0-9-]'
          max_alias_length=28
          alphanum="abcdefghijklmnopqrstuvwxyz0123456789"

          function generate_branch_alias() {
              local branch="$1"
              local normalised=$(echo "$branch" | tr '[:upper:]' '[:lower:]' | sed -e "s/$invalid_chars_regex/-/g" -e "s/^-//" -e "s/-\$//")

              if [ -z "$normalised" ]; then
                  echo "branch-$(rand_alphanum 10)"
                  return
              fi

              if [ ${#normalised} -gt $max_alias_length ]; then
                  echo "${normalised:0:$max_alias_length}"
                  return
              fi

              echo "$normalised"
          }

          function rand_alphanum() {
              local length="$1"
              local alias=""

              for ((i=0; i<$length; i++)); do
                  alias+="${alphanum:RANDOM%${#alphanum}:1}"
              done
          }
          new_url="https://$(generate_branch_alias "${BRANCH}").${BASH_REMATCH[2]}.pages.dev"
          echo $new_url
          echo alias-url=$new_url >> $GITHUB_OUTPUT
      - name: Create Job Summary
        uses: actions/github-script@v7
        env:
          CHANGE_BRANCH: ${{ steps.set-production-branch.outputs.summary }}
          PUBLISH_CFPAGES: ${{ steps.publish.outputs.command-output }}
          PUBLISH_CFPAGES_URL: ${{ steps.publish.outputs.deployment-url }}
          PUBLISH_CFPAGES_ALIAS: ${{ steps.generate-alias-url.outputs.alias-url }}
        with:
          github-token: ${{ secrets.GITHUB_TOKEN }}
          script: |
            const output = `\n#### Cloudflare Pages set production branch ⚙️\`${{ steps.set-production-branch.outcome }}\`\n
            #### Cloudflare Pages Deploy 📖\`${{ steps.publish.outcome }}\`\n

            🔗 Preview URL: [${process.env.PUBLISH_CFPAGES_URL}](${process.env.PUBLISH_CFPAGES_URL})\n

            ${process.env.PUBLISH_CFPAGES_ALIAS ?
              `📌 Branch Preview URL: [${process.env.PUBLISH_CFPAGES_ALIAS}](${process.env.PUBLISH_CFPAGES_ALIAS})\n`:""
            }
            commit hash: \`${{ github.event.head_commit.id }}\`\n
            commit message: [${{ github.event.head_commit.message}}](${{ github.server_url }}/${{ github.repository }}/tree/${{ github.event.head_commit.id}})\n
            commit author: \`${{ github.event.head_commit.author.name }}\`\n
            commit date: \`${{ github.event.head_commit.timestamp }}\`\n
            
            <details><summary>Deploying with Cloudflare Pages</summary>

            \`\`\`deploy\n
            ${process.env.CHANGE_BRANCH}
            ${process.env.PUBLISH_CFPAGES}
            \`\`\`

            </details>

            *Pushed by: @${{ github.actor }}, Action: \`${{ github.event_name }}\`*`;
            await core.summary
              .addHeading('Cloudflare Pages Deploy report')
              .addRaw(output)
              .write()