add deployment workflow for marking translations and deploying frontend/backend

Author: itsneufox

.github/workflows/deploy.yml

@@ -0,0 +1,143 @@
+name: Deploy
+
+on:
+  push:
+    branches:
+      - master
+
+permissions:
+  contents: write
+
+jobs:
+  mark-translations:
+    name: Mark translations outdated
+    runs-on: ubuntu-latest
+    outputs:
+      translations_committed: ${{ steps.check-changes.outputs.translations_modified || 'false' }}
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - name: Set up Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: '18'
+
+      - name: Get changed English documentation files
+        id: changed-files
+        run: |
+          set -euo pipefail
+          BEFORE="${{ github.event.before }}"
+          if git rev-parse "$BEFORE^{commit}" >/dev/null 2>&1; then
+            DIFF_BASE="$BEFORE"
+          else
+            DIFF_BASE=""
+          fi
+
+          if [ -n "$DIFF_BASE" ]; then
+            CHANGED_FILES=$(git diff --name-only "$DIFF_BASE" "${{ github.sha }}" | grep "^frontend/docs/.*\.md$" || true)
+          else
+            CHANGED_FILES=$(git ls-tree --name-only -r "${{ github.sha }}" | grep "^frontend/docs/.*\.md$" || true)
+          fi
+
+          if [ -z "$CHANGED_FILES" ]; then
+            echo "has_changes=false" >> "$GITHUB_OUTPUT"
+          else
+            printf '%s\n' "$CHANGED_FILES" > changed_english_docs.txt
+            echo "has_changes=true" >> "$GITHUB_OUTPUT"
+          fi
+
+      - name: Mark translations as outdated
+        if: steps.changed-files.outputs.has_changes == 'true'
+        run: |
+          node .github/workflows/scripts/mark-translations-outdated.js
+
+      - name: Check if translations were modified
+        if: steps.changed-files.outputs.has_changes == 'true'
+        id: check-changes
+        run: |
+          if [ -n "$(git status --porcelain)" ]; then
+            echo "translations_modified=true" >> "$GITHUB_OUTPUT"
+          else
+            echo "translations_modified=false" >> "$GITHUB_OUTPUT"
+          fi
+
+      - name: Commit changes
+        if: steps.check-changes.outputs.translations_modified == 'true'
+        run: |
+          git config --local user.email "github-actions[bot]@users.noreply.github.com"
+          git config --local user.name "github-actions[bot]"
+          git add frontend/i18n/
+          git commit -m "Mark translations as potentially outdated (post-merge)"
+
+      - name: Push changes
+        if: steps.check-changes.outputs.translations_modified == 'true'
+        run: |
+          git push origin HEAD:${{ github.ref }}
+
+  deploy-backend:
+    name: Deploy backend
+    needs: mark-translations
+    if: needs.mark-translations.outputs.translations_committed != 'true' || github.actor == 'github-actions[bot]'
+    runs-on: ubuntu-latest
+    env:
+      FLY_API_TOKEN: ${{ secrets.FLY_API_TOKEN }}
+
+    steps:
+      - name: Cancel previous runs
+        uses: styfle/[email protected]
+        with:
+          workflow_id: ${{ github.workflow }}
+          access_token: ${{ github.token }}
+
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Set up Flyctl
+        uses: superfly/flyctl-actions/setup-flyctl@master
+        with:
+          version: 0.3.221
+
+      - name: Deploy backend to Fly.io
+        run: flyctl deploy --remote-only --wait-timeout 300
+
+  deploy-frontend:
+    name: Deploy frontend
+    needs: mark-translations
+    if: needs.mark-translations.outputs.translations_committed != 'true' || github.actor == 'github-actions[bot]'
+    runs-on: macos-latest
+
+    steps:
+      - name: Cancel previous runs
+        uses: styfle/[email protected]
+        with:
+          workflow_id: ${{ github.workflow }}
+          access_token: ${{ github.token }}
+
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Cache ~/.npm for npm ci
+        uses: actions/cache@v4
+        with:
+          path: ~/.npm
+          key: ${{ runner.os }}-node-${{ hashFiles('**/package-lock.json') }}
+          restore-keys: ${{ runner.os }}-node
+
+      - name: Restore web cache
+        uses: AmyrAhmady/[email protected]
+
+      - name: Build frontend
+        run: |
+          cd frontend
+          npm i
+          DOCUSAURUS_IGNORE_SSG_WARNINGS=true npm run build
+
+      - name: Deploy frontend
+        uses: JamesIves/github-pages-deploy-action@v4
+        with:
+          folder: frontend/build
+          single-commit: true