# Terraform Main — Auto-generated by hmcmkit infra-architect
# Level: Enterprise | Provider: AWS
#
# Usage:
#   cd infra/terraform/environments/{env}
#   terraform init
#   terraform plan
#   terraform apply

terraform {
  required_version = ">= 1.5"
  required_providers {
    aws = { source = "hashicorp/aws", version = "~> 5.0" }
  }
  backend "s3" {
    bucket         = "${project_name}-terraform-state"
    key            = "${environment}/terraform.tfstate"
    region         = "${aws_region}"
    dynamodb_table = "${project_name}-terraform-locks"
    encrypt        = true
  }
}

provider "aws" {
  region = var.aws_region
  default_tags {
    tags = {
      Project     = var.project_name
      Environment = var.environment
      ManagedBy   = "terraform"
      GeneratedBy = "hmcmkit"
    }
  }
}

# ── Modules ──

module "vpc" {
  source       = "../../modules/vpc"
  project_name = var.project_name
  environment  = var.environment
  vpc_cidr     = var.vpc_cidr
}

module "eks" {
  source           = "../../modules/eks"
  project_name     = var.project_name
  environment      = var.environment
  vpc_id           = module.vpc.vpc_id
  private_subnets  = module.vpc.private_subnet_ids
  cluster_version  = var.eks_cluster_version
  node_instance_types = var.node_instance_types
  depends_on       = [module.vpc]
}

module "rds" {
  source          = "../../modules/rds"
  project_name    = var.project_name
  environment     = var.environment
  vpc_id          = module.vpc.vpc_id
  db_subnets      = module.vpc.database_subnet_ids
  engine          = "postgres"
  engine_version  = "15.4"
  instance_class  = var.db_instance_class
  multi_az        = var.environment == "prod" ? true : false
  depends_on      = [module.vpc]
}

# ── Variables ──

variable "project_name" { type = string }
variable "environment" { type = string }
variable "aws_region" { type = string; default = "ap-northeast-2" }
variable "vpc_cidr" { type = string; default = "10.0.0.0/16" }
variable "eks_cluster_version" { type = string; default = "1.29" }
variable "node_instance_types" { type = list(string); default = ["t3.medium"] }
variable "db_instance_class" { type = string; default = "db.t3.medium" }

# ── Outputs ──

output "vpc_id" { value = module.vpc.vpc_id }
output "eks_cluster_endpoint" { value = module.eks.cluster_endpoint }
output "rds_endpoint" { value = module.rds.endpoint }