# Include root configuration
include "root" {
  path = find_in_parent_folders("root.hcl")
}

# Terragrunt configuration
terraform {
  source = "."
}

# Generate the main Terraform configuration
generate "main" {
  path      = "main.tf"
  if_exists = "overwrite"
  contents  = <<EOF
# Scaleway Compute Instance for Forgejo

variable "project_name" {
  description = "Project name"
  type        = string
}

variable "environment" {
  description = "Environment name"
  type        = string
}

variable "region" {
  description = "Scaleway region"
  type        = string
}

variable "zone" {
  description = "Scaleway zone"
  type        = string
}

variable "common_tags" {
  description = "Common tags for all resources"
  type        = map(string)
}

variable "instance_type" {
  description = "Instance type for Forgejo server"
  type        = string
  default     = "DEV1-M"  # 4GB RAM, 2 vCPUs, 40GB SSD
}

variable "ssh_public_key" {
  description = "SSH public key for server access"
  type        = string
  default     = "" # Will use SSH agent keys if not provided
}

variable "domain_name" {
  description = "Domain name for Forgejo (e.g., git.example.com)"
  type        = string
  default     = ""
}

# Data sources
data "scaleway_instance_image" "ubuntu" {
  architecture = "x86_64"
  name         = "Ubuntu 24.04 Noble Numbat"
  latest       = true
}

# Security Group
resource "scaleway_instance_security_group" "forgejo" {
  name                    = "$${var.project_name}-$${var.environment}-sg"
  inbound_default_policy  = "drop"
  outbound_default_policy = "accept"

  inbound_rule {
    action = "accept"
    port   = "22"
    protocol = "TCP"
    ip_range = "0.0.0.0/0"
  }

  inbound_rule {
    action = "accept"
    port   = "80"
    protocol = "TCP"
    ip_range = "0.0.0.0/0"
  }

  inbound_rule {
    action = "accept"
    port   = "443"
    protocol = "TCP"
    ip_range = "0.0.0.0/0"
  }

  # SSH alternative port (optional, configured via Ansible)
  inbound_rule {
    action = "accept"
    port   = "2222"
    protocol = "TCP"
    ip_range = "0.0.0.0/0"
  }

  tags = [for k, v in var.common_tags : "$${k}:$${v}"]
}

# SSH Key (using IAM SSH key for Scaleway provider v2.x)
resource "scaleway_iam_ssh_key" "forgejo" {
  count      = var.ssh_public_key != "" ? 1 : 0
  name       = "$${var.project_name}-$${var.environment}-key"
  public_key = var.ssh_public_key
}

# Block Volume for data persistence (create before instance)
resource "scaleway_block_volume" "forgejo_data" {
  name       = "$${var.project_name}-$${var.environment}-data"
  size_in_gb = 50
  iops       = 5000

  tags = [for k, v in var.common_tags : "$${k}:$${v}"]
}

# Reserved IP (create before instance for stability)
resource "scaleway_instance_ip" "forgejo" {}

# Compute Instance
resource "scaleway_instance_server" "forgejo" {
  name              = "$${var.project_name}-$${var.environment}"
  type              = var.instance_type
  image             = data.scaleway_instance_image.ubuntu.id
  security_group_id = scaleway_instance_security_group.forgejo.id
  ip_id             = scaleway_instance_ip.forgejo.id

  tags = [for k, v in var.common_tags : "$${k}:$${v}"]

  # Ensure SSH key is registered before instance is created
  depends_on = [scaleway_iam_ssh_key.forgejo]

  # Cloud-init for initial setup (user_data is a map in v2.x)
  user_data = {
    cloud-init = <<-CLOUDINIT
    #cloud-config
    package_update: true
    package_upgrade: true
    packages:
      - apt-transport-https
      - ca-certificates
      - curl
      - gnupg
      - lsb-release
      - python3
      - python3-pip

    write_files:
      - path: /etc/sysctl.d/99-forgejo.conf
        content: |
          # Forgejo optimizations
          net.core.somaxconn = 1024
          net.ipv4.tcp_max_syn_backlog = 2048
          vm.swappiness = 10

    runcmd:
      - sysctl -p /etc/sysctl.d/99-forgejo.conf
      - systemctl enable ssh
      - ufw --force enable
      - ufw allow 22/tcp
      - ufw allow 80/tcp
      - ufw allow 443/tcp
    CLOUDINIT
  }
}

# Attach block volume to instance
resource "scaleway_block_snapshot" "forgejo_data" {
  count     = 0  # Only create if you need snapshots
  name      = "$${var.project_name}-$${var.environment}-snapshot"
  volume_id = scaleway_block_volume.forgejo_data.id
}

# Outputs
output "server_id" {
  description = "Forgejo server ID"
  value       = scaleway_instance_server.forgejo.id
}

output "server_ip" {
  description = "Forgejo server public IP"
  value       = scaleway_instance_ip.forgejo.address
}

output "server_private_ip" {
  description = "Forgejo server private IP"
  value       = length(scaleway_instance_server.forgejo.private_ips) > 0 ? scaleway_instance_server.forgejo.private_ips[0].address : null
}

output "security_group_id" {
  description = "Security group ID"
  value       = scaleway_instance_security_group.forgejo.id
}

output "volume_id" {
  description = "Data volume ID"
  value       = scaleway_block_volume.forgejo_data.id
}

output "ssh_command" {
  description = "SSH command to connect to server"
  value       = "ssh root@$${scaleway_instance_ip.forgejo.address}"
}

output "dns_record" {
  description = "DNS A record to create"
  value       = var.domain_name != "" ? "$${var.domain_name} IN A $${scaleway_instance_ip.forgejo.address}" : "No domain configured"
}
EOF
}

# Dependencies
dependency "storage" {
  config_path = "../storage"
  skip_outputs = true
  mock_outputs = {
    bucket_name = "forgejo-storage"
  }
}