name: Build
on:
  push:
    branches: [main, develop]
  pull_request:
    branches: [main, develop]
  workflow_dispatch:

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4

      - name: Setup Node.js
        uses: actions/setup-node@v4
        with:
          node-version: '25'
          # We handle caching manually below to ensure
          # corepack-managed yarn is used correctly.

      - name: Enable Corepack
        run: |
          corepack enable
          corepack prepare yarn@stable --activate

      - name: Get yarn cache directory path
        id: yarn-cache-dir-path
        run: echo "dir=$(yarn cache dir)" >> $GITHUB_OUTPUT

      - name: Persistent Yarn Cache
        uses: actions/cache@v4
        id: yarn-cache
        with:
          path: ${{ github.workspace }}/.yarn/cache
          key: ${{ runner.os }}-yarn-${{ hashFiles('**/yarn.lock') }}
          restore-keys: |
            ${{ runner.os }}-yarn-

      - name: Install dependencies
        # --immutable ensures the lockfile isn't changed (replaces --frozen-lockfile)
        run: yarn install --immutable

      - name: Build Svelte App
        run: yarn build

      - name: Upload Artifacts
        uses: actions/upload-artifact@v4
        with:
          name: build-artifacts
          path: dist/
          retention-days: 7