# VPC
resource "google_compute_network" "vpc" {
  name                    = "mon-vpc"
  auto_create_subnetworks = false
}

# Sous-réseau

resource "google_compute_subnetwork" "frontend" {
  name          = "mon-frontend"
  network       = google_compute_network.vpc.id
  ip_cidr_range = var.frontend_cidr
  region        = var.region
}

resource "google_compute_subnetwork" "backend" {
  name          = "mon-backend"
  network       = google_compute_network.vpc.id
  ip_cidr_range = var.backend_cidr
  region        = var.region
}

resource "google_compute_subnetwork" "database" {
  name          = "mon-database"
  network       = google_compute_network.vpc.id
  ip_cidr_range = var.database_cidr
  region        = var.region
}

# Pare-Feu


resource "google_compute_firewall" "frontend_http" {
  name    = "frontend-http"
  network = google_compute_network.vpc.id

  allow {
    protocol = "tcp"
    ports    = ["80", "443"]
  }

  source_ranges = ["0.0.0.0/0"]
  target_tags   = ["frontend"]

}

resource "google_compute_firewall" "ssh" {
  name    = "ssh"
  network = google_compute_network.vpc.id

  allow {
    protocol = "tcp"
    ports    = ["22"]
  } 

  source_ranges = [var.ssh_source_ranges]
  target_tags   = ["ssh"]
}

resource "google_compute_firewall" "front_back" {
  name    = "front-back"
  network = google_compute_network.vpc.id

  allow {
    protocol = "tcp"
    ports    = ["8000"]
  }

  source_tags = ["frontend"]
  target_tags   = ["backend"]
}

resource "google_compute_firewall" "back_data" {
  name    = "back-data"
  network = google_compute_network.vpc.id

  allow {
    protocol = "tcp"
    ports    = ["3306"]
  }

  source_tags = ["backend"]
  target_tags   = ["database"]
}