Terraform configuration for creating a firebase project with firestore, functions and storage

firebase.tf

# firebase.tf https://gist.githubusercontent.com/Zebreus/906b8870e49586adfe8bd7bbff43f0a8/raw/firebase.tf
# Terraform configuration for creating a firebase project with firestore, functions and storage
# Unfinished

terraform {
  required_providers {
    google-beta = {
      source  = "hashicorp/google-beta"
      version = "4.11.0"
    }
    null = {
      version = "~> 3.1.0"
    }
    time = {
      source  = "hashicorp/time"
      version = "0.7.2"
    }
  }
}

variable "billing_account_id" {
  type        = string
  description = "The id of the associated billing account"
  nullable    = false
}
variable "project_id" {
  type        = string
  description = "The id of the created project"
  nullable    = false
}
variable "project_name" {
  type        = string
  description = "The name of the created project"
  nullable    = false
}
variable "region" {
  type        = string
  description = "The region to create the project in"
  default     = "europe-west1"
  nullable    = false
}
variable "zone" {
  type        = string
  description = "The zone to create the project in"
  default     = "europe-west1-b"
  nullable    = false
}
variable "location" {
  type        = string
  description = "The location to create the project in"
  default     = "europe-west"
  nullable    = false
}

locals {
  bucket_location = "EUROPE-WEST1"
}

# Basic provider
provider "google-beta" {
  alias  = "gcloud-user"
  region = var.region
  zone   = var.zone
}
data "google_billing_account" "account" {
  provider        = google-beta.gcloud-user
  billing_account = var.billing_account_id
}
data "google_client_config" "gcloud-user" {
  provider = google-beta.gcloud-user
  #   depends_on = [
  #     google_service_account.service_account
  #   ]
}
data "google_client_openid_userinfo" "gcloud-user" {
  provider = google-beta.gcloud-user
}

// Create new google cloud project with service account
resource "google_project" "default" {
  provider        = google-beta.gcloud-user
  project_id      = var.project_id
  name            = var.project_name
  billing_account = data.google_billing_account.account.id
}
resource "google_service_account" "service_account" {
  provider     = google-beta.gcloud-user
  project      = google_project.default.project_id
  account_id   = "terraform"
  display_name = "Terraform"
}


# Allow your user to create a access token
resource "google_service_account_iam_member" "grant-token-iam" {
  provider           = google-beta.gcloud-user
  service_account_id = google_service_account.service_account.id
  role               = "roles/iam.serviceAccountTokenCreator"
  member             = "user:${data.google_client_openid_userinfo.gcloud-user.email}"
}

resource "time_sleep" "delay_token_creation" {
  depends_on = [
    google_service_account_iam_member.grant-token-iam,
    google_service_account.service_account,
    google_project_iam_member.firebase-admin-iam,
    google_project_iam_member.service-usage-admin-iam,
    google_project_iam_member.appengine-admin-iam,
    google_project_iam_member.appengine-creator-iam,
    google_project_iam_member.editor-iam
  ]

  create_duration = "30s"
}
# Create access token
data "google_service_account_access_token" "default" {
  provider = google-beta.gcloud-user
  #   project                = google_project.default.project_id
  target_service_account = google_service_account.service_account.email
  scopes                 = ["userinfo-email", "cloud-platform"]
  lifetime               = "300s"
  depends_on = [
    google_service_account_iam_member.grant-token-iam,
    google_service_account.service_account,
    google_project_iam_member.firebase-admin-iam,
    google_project_iam_member.service-usage-admin-iam,
    google_project_iam_member.appengine-admin-iam,
    google_project_iam_member.appengine-creator-iam,
    google_project_iam_member.editor-iam,
    time_sleep.delay_token_creation
  ]
}

# Give some roles to the service account
resource "google_project_iam_member" "firebase-admin-iam" {
  provider = google-beta.gcloud-user
  project  = google_project.default.project_id
  role     = "roles/firebase.admin"
  member   = "serviceAccount:${google_service_account.service_account.email}"
}
resource "google_project_iam_member" "service-usage-admin-iam" {
  provider = google-beta.gcloud-user
  project  = google_project.default.project_id
  role     = "roles/serviceusage.serviceUsageAdmin"
  member   = "serviceAccount:${google_service_account.service_account.email}"
}
resource "google_project_iam_member" "appengine-admin-iam" {
  provider = google-beta.gcloud-user
  project  = google_project.default.project_id
  role     = "roles/appengine.appAdmin"
  member   = "serviceAccount:${google_service_account.service_account.email}"
}
resource "google_project_iam_member" "appengine-creator-iam" {
  provider = google-beta.gcloud-user
  project  = google_project.default.project_id
  role     = "roles/appengine.appCreator"
  member   = "serviceAccount:${google_service_account.service_account.email}"
}
resource "google_project_iam_member" "editor-iam" {
  provider = google-beta.gcloud-user
  project  = google_project.default.project_id
  role     = "roles/editor"
  member   = "serviceAccount:${google_service_account.service_account.email}"
}

# Create provider with service account
resource "google_service_account_key" "mykey" {
  provider           = google-beta.gcloud-user
  service_account_id = google_service_account.service_account.id
  # Wait for the account being added to roles
  depends_on = [
    google_project_iam_member.firebase-admin-iam,
    google_project_iam_member.service-usage-admin-iam,
  ]
}
provider "google-beta" {
  alias   = "service-account"
  project = google_project.default.project_id
  region  = var.region
  zone    = var.zone
  #   impersonate_service_account = google_service_account.service_account.email
  #   credentials = base64decode(google_service_account_key.mykey.private_key)
  access_token = data.google_service_account_access_token.default.access_token
}

# Activate all required apis
resource "google_project_service" "serviceusage" {
  provider                   = google-beta.gcloud-user
  project                    = google_project.default.project_id
  service                    = "serviceusage.googleapis.com"
  disable_dependent_services = true
  depends_on = [

  ]
}
resource "google_project_service" "firebase" {
  provider                   = google-beta.service-account
  project                    = google_project.default.project_id
  service                    = "firebase.googleapis.com"
  disable_dependent_services = true
  depends_on = [
    google_project_service.serviceusage
  ]
}
resource "google_project_service" "firestore" {
  provider = google-beta.service-account
  project  = google_project.default.project_id
  service  = "firestore.googleapis.com"
  depends_on = [
    google_project_service.serviceusage
  ]
}
resource "google_project_service" "firebasestorage" {
  provider = google-beta.service-account
  project  = google_project.default.project_id
  service  = "firebasestorage.googleapis.com"
  depends_on = [
    google_project_service.serviceusage
  ]
}
resource "google_project_service" "cloudresourcemanager" {
  provider = google-beta.service-account
  project  = google_project.default.project_id
  service  = "cloudresourcemanager.googleapis.com"
  depends_on = [
    google_project_service.serviceusage
  ]
}
resource "google_project_service" "identitytoolkit" {
  provider = google-beta.service-account
  project  = google_project.default.project_id
  service  = "identitytoolkit.googleapis.com"
  depends_on = [
    google_project_service.serviceusage
  ]
}
resource "google_project_service" "compute" {
  provider = google-beta.service-account
  project  = google_project.default.project_id
  service  = "compute.googleapis.com"
  depends_on = [

    google_project_service.serviceusage
  ]
}
resource "google_project_service" "container_registry" {
  provider                   = google-beta.service-account
  project                    = google_project.default.project_id
  service                    = "containerregistry.googleapis.com"
  disable_dependent_services = true
  depends_on = [
    google_project_service.serviceusage
  ]
}
resource "google_project_service" "cloud_run" {
  provider = google-beta.service-account
  project  = google_project.default.project_id
  service  = "run.googleapis.com"
  depends_on = [
    google_project_service.serviceusage
  ]
}
resource "google_project_service" "cloud_build" {
  provider = google-beta.service-account
  project  = google_project.default.project_id
  service  = "cloudbuild.googleapis.com"
  depends_on = [
    google_project_service.serviceusage
  ]
}

# Create firebase project
resource "google_firebase_project" "default" {
  provider = google-beta.service-account
  project  = google_project.default.project_id
  depends_on = [
    google_project_service.firebase
  ]
}

# Create firebase web app
resource "google_firebase_web_app" "basic" {
  provider     = google-beta.service-account
  project      = google_project.default.project_id
  display_name = "${var.project_name} App"
  depends_on = [
    google_firebase_project.default
  ]
}
data "google_firebase_web_app_config" "basic" {
  provider   = google-beta.service-account
  web_app_id = google_firebase_web_app.basic.app_id
}

# Create firestore database
resource "google_app_engine_application" "app" {
  provider = google-beta.service-account
  #   provider      = google-beta.gcloud-user
  project       = google_project.default.project_id
  location_id   = var.location
  database_type = "CLOUD_FIRESTORE"
  depends_on = [
    google_project_iam_member.appengine-admin-iam,
    google_project_iam_member.appengine-creator-iam,
    google_project_service.firestore
  ]
}

# Create a bucket for backups
resource "google_storage_bucket" "backup" {
  provider = google-beta.service-account
  project  = google_project.default.project_id
  name     = "${google_project.default.project_id}-backup"
  location = local.bucket_location
}

# Create admin-sdk service account
resource "google_service_account" "admin_sdk" {
  provider     = google-beta.gcloud-user
  project      = google_project.default.project_id
  account_id   = "firebase-adminsdk-ouwu6"
  display_name = "firebase-adminsdk"
}
resource "google_project_iam_member" "admin-sdk-token-creator" {
  provider = google-beta.gcloud-user
  project  = google_project.default.project_id
  role     = "roles/iam.serviceAccountTokenCreator"
  member   = "serviceAccount:${google_service_account.admin_sdk.email}"
}
resource "google_project_iam_member" "admin-sdk-agent" {
  provider = google-beta.gcloud-user
  project  = google_project.default.project_id
  role     = "roles/firebase.sdkAdminServiceAgent"
  member   = "serviceAccount:${google_service_account.admin_sdk.email}"
}
resource "google_service_account_key" "admin_sdk" {
  provider           = google-beta.gcloud-user
  service_account_id = google_service_account.service_account.id
  # Wait for the account being added to roles
  depends_on = [
    google_project_iam_member.admin-sdk-token-creator,
    google_project_iam_member.admin-sdk-agent,
  ]
}

# Create firebase storage
resource "null_resource" "activate_storage" {
  triggers = {
    bucket = data.google_firebase_web_app_config.basic.storage_bucket
  }
  provisioner "local-exec" {
    command     = "curl -X POST -H 'Authorization: Bearer ${nonsensitive(data.google_service_account_access_token.default.access_token)}' -H 'Content-Type: application/json' 'https://firebasestorage.googleapis.com/v1beta/projects/${google_project.default.project_id}/buckets/${data.google_firebase_web_app_config.basic.storage_bucket}:addFirebase'"
    interpreter = ["sh", "-c"]
  }
  depends_on = [
    google_firebase_web_app.basic,
    google_project_service.firebasestorage
  ]
}

# Enable authentication service
resource "google_identity_platform_config" "identity_platform_config" {
  provider = google-beta.service-account
  project = google_project.default.project_id
  autodelete_anonymous_users = true
  depends_on = [
    google_firebase_web_app.basic,
    google_project_service.identitytoolkit
  ]
}
resource "google_identity_platform_project_default_config" "identity_project_config" {
  provider = google-beta.service-account
  project = google_project.default.project_id 

  sign_in {
    allow_duplicate_emails = false
    
    email {
      enabled = true
      password_required = true
    }
  }

  depends_on =[google_identity_platform_config.identity_platform_config]
}

# Write secrets to local file
resource "local_file" "firebase_config" {
  content = jsonencode({
    firebase = {
      appId             = google_firebase_web_app.basic.app_id
      apiKey            = data.google_firebase_web_app_config.basic.api_key
      authDomain        = data.google_firebase_web_app_config.basic.auth_domain
      databaseURL       = lookup(data.google_firebase_web_app_config.basic, "database_url", "")
      storageBucket     = lookup(data.google_firebase_web_app_config.basic, "storage_bucket", "")
      messagingSenderId = lookup(data.google_firebase_web_app_config.basic, "messaging_sender_id", "")
      measurementId     = lookup(data.google_firebase_web_app_config.basic, "measurement_id", "")
    }
  })
  filename = "${path.module}/firebase-config.json"
  depends_on = [
    google_firebase_web_app.basic
  ]
}

resource "local_file" "secrets_file" {
  content = jsonencode({
    private = {
      serviceAccount = jsondecode(base64decode(google_service_account_key.admin_sdk.private_key))
      firebase = {
        backupBucket = google_storage_bucket.backup.name
      }
    }
    public = {
      firebase = {
        projectId         = google_project.default.project_id
        appId             = google_firebase_web_app.basic.app_id
        apiKey            = data.google_firebase_web_app_config.basic.api_key
        authDomain        = data.google_firebase_web_app_config.basic.auth_domain
        databaseURL       = lookup(data.google_firebase_web_app_config.basic, "database_url", "")
        storageBucket     = lookup(data.google_firebase_web_app_config.basic, "storage_bucket", "")
        messagingSenderId = lookup(data.google_firebase_web_app_config.basic, "messaging_sender_id", "")
        measurementId     = lookup(data.google_firebase_web_app_config.basic, "measurement_id", "")
      }
    }
  })
  filename = "${path.module}/secrets.json"
  depends_on = [
    google_firebase_web_app.basic
  ]
}

resource "local_file" "firebaserc" {
  content = jsonencode({
    projects = {
      development = google_project.default.project_id
      production  = google_project.default.project_id
    }
  })
  filename = "${path.module}/.firebaserc"
  depends_on = [
    google_project.default
  ]
}


resource "local_file" "admin_config" {
  content  = base64decode(google_service_account_key.mykey.private_key)
  filename = "${path.module}/admin-config.json"
  depends_on = [
    google_service_account_key.mykey,
    google_firebase_web_app.basic
  ]
}

@afgallo

I pulled the google_identity_platform_config.identity_platform_config resource into my own script, dropped the provider = google-beta instruction (as of v4.66.0, you don't need the beta provider), and it worked fine for me.

This gist is super helpful, thank you! FYI, setting authorized domains is now supported: https://registry.terraform.io/providers/hashicorp/google/latest/docs/resources/identity_platform_config#authorized_domains

@zebreus i was looking at your null resource and how you're authenticating to get a token and then curling the firebase api. i started digging around for ways to create custom resources. have you looked into creating a plugin to extend the google-beta provider. that way you could write more robust crud and state management and lifecycle logic with the go sdk for firebase admin. you should be able to inherit auth from the same instantiation as your parent provider call too.

are you still effing with this? it's cool stuff. it would be really powerful to be able to fully manage firebase projects from code and i don't feel like waiting around for a version that does. i'm going to start hacking on something. let me know if you have any advice or another repo started with something like this.