---
name: Prepare Cactus Release
run-name: Prepare ${{ inputs.releaseVersion }} from ${{ inputs.sourceRef }}

on:
  workflow_dispatch:
    inputs:
      releaseVersion:
        type: string
        description: Release version in strict x.y.z format
        required: true
      sourceRef:
        type: string
        description: Branch, tag, or commit to prepare from
        required: false
        default: main

permissions:
  contents: read

jobs:
  prepare:
    if: github.repository == 'bluesky-social/social-app'
    name: Prepare release document
    runs-on: ubuntu-latest
    steps:
      - name: Show workflow inputs
        env:
          RELEASE_VERSION: ${{ inputs.releaseVersion }}
          SOURCE_REF: ${{ inputs.sourceRef }}
        run: |
          echo "Release version: $RELEASE_VERSION"
          echo "Source ref: $SOURCE_REF"

      - name: Checkout source
        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
        with:
          ref: ${{ inputs.sourceRef }}
          fetch-depth: 0
          persist-credentials: false

      - name: Derive release identity
        id: identity
        env:
          RELEASE_VERSION: ${{ inputs.releaseVersion }}
        run: |
          identity=$(node scripts/release/cli.mjs identity "$RELEASE_VERSION")
          echo "$identity"
          {
            echo "version=$(jq -r .version <<< "$identity")"
            echo "branch=$(jq -r .branch <<< "$identity")"
            echo "tag=$(jq -r .tag <<< "$identity")"
            echo "filename=$(jq -r .filename <<< "$identity")"
            echo "release-name=$(jq -r .githubReleaseName <<< "$identity")"
            echo "source-sha=$(git rev-parse HEAD)"
          } >> "$GITHUB_OUTPUT"

      - name: Validate package and Expo versions
        env:
          RELEASE_VERSION: ${{ steps.identity.outputs.version }}
        run: |
          node --input-type=commonjs <<'NODE'
          const pkg = require('./package.json')
          const config = require('./app.config.js')({}).expo
          const expected = process.env.RELEASE_VERSION

          if (pkg.version !== expected) {
            throw new Error(`package.json version '${pkg.version}' does not match release version '${expected}'.`)
          }
          if (config.version !== expected) {
            throw new Error(`Expo app version '${config.version}' does not match release version '${expected}'.`)
          }
          if (config.runtimeVersion?.policy !== 'appVersion') {
            throw new Error("Expo runtimeVersion must use the 'appVersion' policy.")
          }

          console.log(`package.json version: ${pkg.version}`)
          console.log(`Expo app version: ${config.version}`)
          console.log(`Effective Expo runtime version: ${config.version}`)
          NODE

      - name: Generate provisional changelog
        id: changelog
        env:
          RELEASE_VERSION: ${{ steps.identity.outputs.version }}
        run: |
          previous_tag=""
          while IFS= read -r tag; do
            if [[ "$tag" =~ ^[0-9]+\.[0-9]+\.[0-9]+$ ]] && [ "$tag" != "$RELEASE_VERSION" ]; then
              previous_tag="$tag"
              break
            fi
          done < <(git tag --merged HEAD --sort=-version:refname)

          if [ -n "$previous_tag" ]; then
            range="refs/tags/$previous_tag..HEAD"
            echo "Generating changelog from $range"
          else
            range="HEAD"
            echo "No previous release tag is reachable; generating changelog from HEAD"
          fi

          git log --no-merges --pretty=format:'- %s' "$range" > initial-changelog.md
          if [ ! -s initial-changelog.md ]; then
            echo "- No changes since the previous release tag." > initial-changelog.md
          fi
          echo "previous-tag=${previous_tag:-none}" >> "$GITHUB_OUTPUT"

      - name: Create and validate release document
        env:
          RELEASE_VERSION: ${{ steps.identity.outputs.version }}
          RELEASE_FILE: ${{ steps.identity.outputs.filename }}
        run: |
          node scripts/release/cli.mjs create "$RELEASE_VERSION" initial-changelog.md "$RELEASE_FILE"
          node scripts/release/cli.mjs validate "$RELEASE_FILE" prepared

      - name: Upload release document preview
        uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
        with:
          name: cactus-release-${{ steps.identity.outputs.version }}-${{ github.run_id }}
          path: ${{ steps.identity.outputs.filename }}
          if-no-files-found: error
          retention-days: 14

      - name: Summarize release candidate
        env:
          VERSION: ${{ steps.identity.outputs.version }}
          BRANCH: ${{ steps.identity.outputs.branch }}
          TAG: ${{ steps.identity.outputs.tag }}
          RELEASE_FILE: ${{ steps.identity.outputs.filename }}
          RELEASE_NAME: ${{ steps.identity.outputs.release-name }}
          SOURCE_REF: ${{ inputs.sourceRef }}
          SOURCE_SHA: ${{ steps.identity.outputs.source-sha }}
          PREVIOUS_TAG: ${{ steps.changelog.outputs.previous-tag }}
        run: |
          {
            echo "## Cactus release preview"
            echo
            echo "- Version: \`$VERSION\`"
            echo "- Source ref: \`$SOURCE_REF\`"
            echo "- Source SHA: \`$SOURCE_SHA\`"
            echo "- Previous release tag: \`$PREVIOUS_TAG\`"
            echo "- Release branch: \`$BRANCH\`"
            echo "- Release tag: \`$TAG\`"
            echo "- Release document: \`$RELEASE_FILE\`"
            echo "- GitHub Release name: \`$RELEASE_NAME\`"
            echo
            echo "This was a read-only preview. No branch, tag, commit, or GitHub Release was created."
          } >> "$GITHUB_STEP_SUMMARY"