Configure auto-deployment. (#48)

* feat: setup auto-deployment

* ignore the firebase cache

* Only build a preview site when the site actually changes.

.firebaserc

@@ -0,0 +1,5 @@
+{
+  "projects": {
+    "default": "expr-playground"
+  }
+}

.github/workflows/firebase-hosting-merge.yml

@@ -0,0 +1,27 @@
+# This file was auto-generated by the Firebase CLI
+# https://github.com/firebase/firebase-tools
+
+name: Deploy to Firebase Hosting on merge
+'on':
+  push:
+    branches:
+      - main
+jobs:
+  build_and_deploy:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+
+      - uses: actions/setup-go@v4
+        with:
+          go-version: '>=1.21.0'
+          cache: true
+
+      - run: make build
+
+      - uses: FirebaseExtended/action-hosting-deploy@v0
+        with:
+          repoToken: '${{ secrets.GITHUB_TOKEN }}'
+          firebaseServiceAccount: '${{ secrets.FIREBASE_SERVICE_ACCOUNT_EXPR_PLAYGROUND }}'
+          channelId: live
+          projectId: expr-playground

.github/workflows/firebase-hosting-pull-request.yml

@@ -0,0 +1,28 @@
+# This file was auto-generated by the Firebase CLI
+# https://github.com/firebase/firebase-tools
+
+name: Deploy to Firebase Hosting on PR
+'on':
+  pull_request:
+    paths:
+      - 'web/**'
+      - 'eval/eval.go'
+jobs:
+  build_and_preview:
+    if: '${{ github.event.pull_request.head.repo.full_name == github.repository }}'
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+
+      - uses: actions/setup-go@v4
+        with:
+          go-version: '>=1.21.0'
+          cache: true
+
+      - run: make build
+
+      - uses: FirebaseExtended/action-hosting-deploy@v0
+        with:
+          repoToken: '${{ secrets.GITHUB_TOKEN }}'
+          firebaseServiceAccount: '${{ secrets.FIREBASE_SERVICE_ACCOUNT_EXPR_PLAYGROUND }}'
+          projectId: expr-playground

.gitignore

@@ -3,4 +3,5 @@ bin/
 *.out
 web/main.wasm
 web/assets/main.wasm.gz
-web/assets/data.json
+web/assets/data.json
+/.firebase

firebase.json

@@ -0,0 +1,16 @@
+{
+  "hosting": {
+    "public": "web",
+    "ignore": [
+      "firebase.json",
+      "**/.*",
+      "**/node_modules/**"
+    ],
+    "rewrites": [
+      {
+        "source": "**",
+        "destination": "/index.html"
+      }
+    ]
+  }
+}