terraform {
  required_providers {
    google = {
      source = "hashicorp/google"
      version = "4.74.0"
    }
  }
}


provider "google" {
  project     = "multichannel-chat-widget"
  region      = "asia-east1"
}

resource "google_compute_network" "vpc_network" {
  name                    = "multichannel-chat-network"
  auto_create_subnetworks = false
  mtu                     = 1460
}

resource "google_compute_subnetwork" "default" {
  name          = "multichannel-chat-subnet"
  ip_cidr_range = "10.0.1.0/24"
  region        = "asia-east1"
  network       = google_compute_network.vpc_network.id

}


# Create a single Compute Engine instance
resource "google_compute_instance" "default" {
  name         = "multichannel-chat-vm"
  machine_type = "f1-micro"
  zone         = "asia-east1-a"
  tags         = ["ssh"]

  boot_disk {
    initialize_params {
      image = "debian-cloud/debian-11"
    }
  }

  # Install requirements
  metadata_startup_script = "sudo apt-get update; sudo apt-get install -yq build-essential python3-pip rsync; pip install -r requirements.txt"

  network_interface {
    subnetwork = google_compute_subnetwork.default.id

    access_config {
      # Include this section to give the VM an external IP address
    }
  }
}

resource "google_compute_firewall" "ssh" {
  name = "allow-ssh"
  allow {
    ports    = ["22"]
    protocol = "tcp"
  }
  direction     = "INGRESS"
  network       = google_compute_network.vpc_network.id
  priority      = 1000
  source_ranges = ["0.0.0.0/0"]
  target_tags   = ["ssh"]
}