feat(apps): establish firebase base for functions and local emulation

Create the initial base function and emulation bazel rules and files

Author: josephperrott

.gitignore

@@ -48,3 +48,6 @@ yarn-error.log
 
 # Don't check in junit test results.
 test-results/*
+
+# Ignore firebase debug logs.
+apps/*-debug.log

apps/.firebaserc

@@ -0,0 +1 @@
+{}

apps/BUILD.bazel

@@ -0,0 +1,23 @@
+load("@build_bazel_rules_nodejs//:index.bzl", "nodejs_binary")
+
+nodejs_binary(
+    name = "serve",
+    chdir = package_name(),
+    data = [
+        # primary firebase configuration file
+        "firebase.json",
+
+        # Firebase function files
+        "//apps/functions:functions_compiled",
+        "//apps/functions:functions_files",
+    ],
+    entry_point = "@npm//:node_modules/firebase-tools/lib/bin/firebase.js",
+    templated_args = [
+        "--project",
+        "angular-caretaker",
+        "--config",
+        # TODO: Find a way to do this without relying on the copy_to_bin that works cross platform.
+        "$$(rlocation $(execpath :firebase.json))",
+        "emulators:start",
+    ],
+)

apps/firebase.json

@@ -0,0 +1,21 @@
+{
+  "firestore": {
+    "rules": "firestore.rules",
+    "indexes": "firestore.indexes.json"
+  },
+  "functions": {
+    "predeploy": "bazel build //apps/functions:functions_compiled",
+    "source": "../dist/bin/apps/functions"
+  },
+  "emulators": {
+    "functions": {
+      "port": 5001
+    },
+    "firestore": {
+      "port": 8080
+    },
+    "ui": {
+      "enabled": true
+    }
+  }
+}

apps/firestore.indexes.json

@@ -0,0 +1,4 @@
+{
+  "indexes": [],
+  "fieldOverrides": []
+}

apps/firestore.rules

@@ -0,0 +1,7 @@
+service cloud.firestore {
+  match /databases/{database}/documents {
+    match /{document=**} {
+      allow read, write: if false
+    }
+  }
+}

apps/functions/BUILD.bazel

@@ -0,0 +1,35 @@
+load("//tools:defaults.bzl", "esbuild", "ts_library")
+load("@build_bazel_rules_nodejs//:index.bzl", "copy_to_bin")
+
+package(default_visibility = ["//visibility:private"])
+
+copy_to_bin(
+    name = "functions_files",
+    srcs = [
+        "package.json",
+    ],
+    visibility = ["//apps:__pkg__"],
+)
+
+ts_library(
+    name = "functions",
+    srcs = [
+        "index.ts",
+    ],
+    deps = [
+        "@npm//firebase-functions",
+    ],
+)
+
+esbuild(
+    name = "functions_compiled",
+    entry_points = [
+        "index.ts",
+    ],
+    format = "cjs",
+    visibility = ["//apps:__pkg__"],
+    deps = [
+        ":functions",
+        "@npm//firebase-functions",
+    ],
+)

apps/functions/index.ts

@@ -0,0 +1 @@
+import * as functions from 'firebase-functions';

apps/functions/package.json

@@ -0,0 +1,8 @@
+{
+  "name": "functions",
+  "engines": {
+    "node": "16"
+  },
+  "main": "index.js",
+  "private": true
+}

package.json

@@ -103,6 +103,8 @@
     "ejs": "^3.1.6",
     "firebase": "^9.6.9",
     "firebase-admin": "^10.0.2",
+    "firebase-functions": "^3.19.0",
+    "firebase-tools": "^10.5.0",
     "git-raw-commits": "^2.0.10",
     "glob": "7.2.0",
     "husky": "^7.0.1",