# ─────────────────────────────────────────────────────────────────────────────
# Claude Code Agent Monitor – Root orchestration module
#
# Selects the cloud provider implementation via var.cloud_provider and wires
# the generic modules together.  Each provider directory contains a full,
# opinionated implementation that composes the child modules.
# ─────────────────────────────────────────────────────────────────────────────

locals {
  common_tags = merge(
    {
      project     = var.project_name
      environment = var.environment
      managed_by  = "terraform"
      repository  = "Claude-Code-Agent-Monitor"
    },
    var.tags,
  )

  # Normalise resource name prefix (lowercase, hyphens)
  name_prefix = lower(replace("${var.project_name}-${var.environment}", "_", "-"))
}

# ── Networking ──────────────────────────────────────────────────────────────

module "networking" {
  source = "./modules/networking"

  project_name         = var.project_name
  environment          = var.environment
  cloud_provider       = var.cloud_provider
  region               = var.region
  vpc_cidr             = var.vpc_cidr
  availability_zones   = var.availability_zones
  public_subnet_cidrs  = var.public_subnet_cidrs
  private_subnet_cidrs = var.private_subnet_cidrs
  app_port             = var.app_port
  mcp_port             = var.mcp_port
  tags                 = local.common_tags
}

# ── Persistent storage (SQLite DB) ─────────────────────────────────────────

module "database" {
  source = "./modules/database"

  project_name          = var.project_name
  environment           = var.environment
  cloud_provider        = var.cloud_provider
  region                = var.region
  storage_size_gb       = var.storage_size_gb
  enable_backup         = var.enable_storage_backup
  private_subnet_ids    = module.networking.private_subnet_ids
  vpc_id                = module.networking.vpc_id
  allowed_security_group_ids = module.networking.storage_security_group_ids
  tags                  = local.common_tags
}

# ── Compute (Blue slot) ────────────────────────────────────────────────────

module "compute_blue" {
  source = "./modules/compute"

  project_name          = var.project_name
  environment           = var.environment
  cloud_provider        = var.cloud_provider
  region                = var.region
  deployment_slot       = "blue"
  container_image       = var.app_container_image
  mcp_container_image   = var.mcp_container_image
  app_port              = var.app_port
  mcp_port              = var.mcp_port
  cpu                   = var.cpu
  memory                = var.memory
  desired_count         = var.active_deployment_slot == "blue" ? var.desired_replicas : 0
  min_count             = var.active_deployment_slot == "blue" ? var.min_replicas : 0
  max_count             = var.active_deployment_slot == "blue" ? var.max_replicas : 0
  environment_variables = var.environment_variables
  health_check_path     = var.health_check_path
  vpc_id                = module.networking.vpc_id
  private_subnet_ids    = module.networking.private_subnet_ids
  security_group_ids    = module.networking.private_security_group_ids
  storage_filesystem_id = module.database.filesystem_id
  storage_mount_targets = module.database.mount_target_ids
  autoscaling_cpu_target    = var.autoscaling_cpu_target
  autoscaling_memory_target = var.autoscaling_memory_target
  tags                  = local.common_tags
}

# ── Compute (Green slot) ───────────────────────────────────────────────────

module "compute_green" {
  source = "./modules/compute"

  project_name          = var.project_name
  environment           = var.environment
  cloud_provider        = var.cloud_provider
  region                = var.region
  deployment_slot       = "green"
  container_image       = var.app_container_image
  mcp_container_image   = var.mcp_container_image
  app_port              = var.app_port
  mcp_port              = var.mcp_port
  cpu                   = var.cpu
  memory                = var.memory
  desired_count         = var.active_deployment_slot == "green" ? var.desired_replicas : 0
  min_count             = var.active_deployment_slot == "green" ? var.min_replicas : 0
  max_count             = var.active_deployment_slot == "green" ? var.max_replicas : 0
  environment_variables = var.environment_variables
  health_check_path     = var.health_check_path
  vpc_id                = module.networking.vpc_id
  private_subnet_ids    = module.networking.private_subnet_ids
  security_group_ids    = module.networking.private_security_group_ids
  storage_filesystem_id = module.database.filesystem_id
  storage_mount_targets = module.database.mount_target_ids
  autoscaling_cpu_target    = var.autoscaling_cpu_target
  autoscaling_memory_target = var.autoscaling_memory_target
  tags                  = local.common_tags
}

# ── Load balancer ───────────────────────────────────────────────────────────

module "loadbalancer" {
  source = "./modules/loadbalancer"

  project_name        = var.project_name
  environment         = var.environment
  cloud_provider      = var.cloud_provider
  region              = var.region
  vpc_id              = module.networking.vpc_id
  public_subnet_ids   = module.networking.public_subnet_ids
  security_group_ids  = module.networking.public_security_group_ids
  app_port            = var.app_port
  mcp_port            = var.mcp_port
  tls_certificate_arn = var.tls_certificate_arn
  domain_name         = var.domain_name

  blue_target_group_arn  = module.compute_blue.target_group_arn
  green_target_group_arn = module.compute_green.target_group_arn
  blue_weight            = var.blue_weight
  green_weight           = var.green_weight

  health_check_path              = var.health_check_path
  health_check_interval          = var.health_check_interval
  health_check_timeout           = var.health_check_timeout
  health_check_healthy_threshold = var.health_check_healthy_threshold
  health_check_unhealthy_threshold = var.health_check_unhealthy_threshold

  enable_deletion_protection = var.environment == "production"

  tags = local.common_tags
}

# ── Weight sum validation ───────────────────────────────────────────────────

check "blue_green_weight_sum" {
  assert {
    condition     = var.blue_weight + var.green_weight == 100
    error_message = "blue_weight (${var.blue_weight}) + green_weight (${var.green_weight}) must sum to 100."
  }
}

# ── Monitoring ──────────────────────────────────────────────────────────────

module "monitoring" {
  source = "./modules/monitoring"
  count  = var.enable_monitoring ? 1 : 0

  project_name       = var.project_name
  environment        = var.environment
  cloud_provider     = var.cloud_provider
  region             = var.region
  alert_email        = var.alert_email
  log_retention_days = var.log_retention_days

  loadbalancer_arn  = module.loadbalancer.loadbalancer_arn
  target_group_arns = [
    module.compute_blue.target_group_arn,
    module.compute_green.target_group_arn,
  ]
  compute_cluster_name = module.compute_blue.cluster_name
  filesystem_id        = module.database.filesystem_id

  tags = local.common_tags
}