# Share theme to one Shopify store, rename with -PR{padded}, upload JSON fragment for PR comment fan-in.
# Intended to be called from a matrix job (one invocation per store).

name: Publish PR preview (single store)

on:
  workflow_call:
    inputs:
      pr_number:
        required: true
        type: string
        description: "Padded PR number (e.g. 09) for theme name suffix -PR09"
      store_alias:
        required: true
        type: string
        description: "Store alias (for artifact naming and comment JSON)"
      store_alias_secret:
        required: false
        type: string
        default: ''
        description: "Upper snake-case secret suffix; empty uses SHOPIFY_STORE_URL / SHOPIFY_THEME_ACCESS_TOKEN"
    outputs:
      theme_id:
        description: "Theme ID after share/rename"
        value: ${{ jobs.publish.outputs.theme_id }}
      theme_name:
        description: "Final theme name after rename"
        value: ${{ jobs.publish.outputs.theme_name }}
      share_output:
        description: "Raw share command output"
        value: ${{ jobs.publish.outputs.share_output }}

jobs:
  publish:
    runs-on: ubuntu-latest
    permissions:
      contents: read
      actions: write
    outputs:
      theme_id: ${{ steps.rename.outputs.theme_id }}
      theme_name: ${{ steps.rename.outputs.theme_name }}
      share_output: ${{ steps.share.outputs.share_output }}
    steps:
      - name: Checkout code
        uses: actions/checkout@v4

      - name: Validate theme root
        run: |
          if [ ! -f "layout/theme.liquid" ]; then
            echo "layout/theme.liquid not found. Ensure workflow runs at theme repository root."
            exit 1
          fi

      - name: Install Shopify CLI
        run: npm install -g @shopify/cli @shopify/theme

      - name: Share theme
        id: share
        env:
          SHOPIFY_STORE_URL: ${{ inputs.store_alias_secret && secrets[format('SHOPIFY_STORE_URL_{0}', inputs.store_alias_secret)] || secrets.SHOPIFY_STORE_URL }}
          SHOPIFY_THEME_ACCESS_TOKEN: ${{ inputs.store_alias_secret && secrets[format('SHOPIFY_THEME_ACCESS_TOKEN_{0}', inputs.store_alias_secret)] || secrets.SHOPIFY_THEME_ACCESS_TOKEN }}
        run: |
          if [ -z "$SHOPIFY_STORE_URL" ] || [ -z "$SHOPIFY_THEME_ACCESS_TOKEN" ]; then
            echo "Missing Shopify secrets."
            exit 1
          fi

          OUTPUT=$(shopify theme share \
            --store "$SHOPIFY_STORE_URL" \
            --password "$SHOPIFY_THEME_ACCESS_TOKEN" 2>&1)
          STATUS=$?

          echo "$OUTPUT"
          if [ $STATUS -ne 0 ]; then
            echo "Theme share failed."
            exit $STATUS
          fi

          THEME_NAME=$(echo "$OUTPUT" | sed -n "s/.*The theme '\([^']*\)'.*/\1/p" | head -1)
          THEME_ID=$(echo "$OUTPUT" | sed -n 's/.*#\([0-9]*\).*/\1/p' | head -1)

          if [ -z "$THEME_ID" ]; then
            echo "Could not parse theme id from share output."
            exit 1
          fi

          echo "theme_id=$THEME_ID" >> "$GITHUB_OUTPUT"
          if [ -n "$THEME_NAME" ]; then
            echo "theme_name=$THEME_NAME" >> "$GITHUB_OUTPUT"
          fi

          {
            echo "share_output<<SHARE_EOF"
            echo "$OUTPUT"
            echo "SHARE_EOF"
          } >> "$GITHUB_OUTPUT"

      - name: Rename theme with PR suffix
        id: rename
        env:
          SHOPIFY_STORE_URL: ${{ inputs.store_alias_secret && secrets[format('SHOPIFY_STORE_URL_{0}', inputs.store_alias_secret)] || secrets.SHOPIFY_STORE_URL }}
          SHOPIFY_THEME_ACCESS_TOKEN: ${{ inputs.store_alias_secret && secrets[format('SHOPIFY_THEME_ACCESS_TOKEN_{0}', inputs.store_alias_secret)] || secrets.SHOPIFY_THEME_ACCESS_TOKEN }}
          THEME_ID: ${{ steps.share.outputs.theme_id }}
          THEME_NAME: ${{ steps.share.outputs.theme_name }}
          PR_NUMBER: ${{ inputs.pr_number }}
        run: |
          if [ -z "$THEME_ID" ] || [ -z "$THEME_NAME" ]; then
            echo "Missing theme_id/theme_name from share step."
            exit 1
          fi
          if [ -z "$SHOPIFY_STORE_URL" ] || [ -z "$SHOPIFY_THEME_ACCESS_TOKEN" ]; then
            echo "Missing Shopify store URL/token for rename."
            exit 1
          fi

          NEW_THEME_NAME="${THEME_NAME}-PR${PR_NUMBER}"
          echo "Renaming theme $THEME_ID to '$NEW_THEME_NAME'..."

          if shopify theme rename \
            --store "$SHOPIFY_STORE_URL" \
            --password "$SHOPIFY_THEME_ACCESS_TOKEN" \
            --theme "$THEME_ID" \
            --name "$NEW_THEME_NAME" 2>&1; then
            echo "Rename succeeded with password auth."
          elif shopify theme rename \
            --store "$SHOPIFY_STORE_URL" \
            --theme "$THEME_ID" \
            --name "$NEW_THEME_NAME" 2>&1; then
            echo "Rename succeeded with authenticated session."
          else
            echo "Failed to rename theme."
            exit 1
          fi

          echo "theme_id=$THEME_ID" >> "$GITHUB_OUTPUT"
          echo "theme_name=$NEW_THEME_NAME" >> "$GITHUB_OUTPUT"

      - name: Write preview fragment for PR comment
        env:
          STORE_ALIAS: ${{ inputs.store_alias }}
          THEME_ID: ${{ steps.rename.outputs.theme_id }}
          SHOPIFY_STORE_URL: ${{ inputs.store_alias_secret && secrets[format('SHOPIFY_STORE_URL_{0}', inputs.store_alias_secret)] || secrets.SHOPIFY_STORE_URL }}
        run: |
          node <<'NODE'
          const fs = require('fs');
          const alias = process.env.STORE_ALIAS || 'store';
          const safeAlias = alias.toLowerCase().replace(/[^a-z0-9_-]/g, '-');
          const fileName = `fragment-${safeAlias || 'store'}.json`;
          const url = (process.env.SHOPIFY_STORE_URL || '')
            .replace(/^https?:\/\//, '')
            .replace(/\/.*$/, '');
          const payload = {
            alias,
            theme_id: process.env.THEME_ID || '',
            store_host: url,
          };
          fs.writeFileSync(fileName, JSON.stringify(payload, null, 0));
          NODE

      - name: Upload preview fragment
        uses: actions/upload-artifact@v4
        with:
          name: preview-fragment-${{ inputs.store_alias }}
          path: fragment-*.json
          retention-days: 2