# ── REST API (neuron-rest) — Cloud Run ────────────────────────────────────────
# Stateless API layer. Validates JWTs from accounts service.
# No database connection — reads user context from accounts service.
# cpu_idle=false: always-hot, no cold-start latency for API calls.

locals {
  api_labels = {
    "managed-by" = "terraform"
    "service"    = "neuron-api"
  }
}

# ── Prod — us-central1 ────────────────────────────────────────────────────────

resource "google_cloud_run_v2_service" "api_us" {
  name     = "api-prod-us"
  location = "us-central1"
  project  = var.project_id
  ingress  = "INGRESS_TRAFFIC_ALL"
  labels   = local.api_labels

  template {
    service_account = google_service_account.api.email

    scaling {
      min_instance_count = 1
      max_instance_count = 100
    }

    containers {
      image = local.api_image

      resources {
        limits = {
          cpu    = "2"
          memory = "1Gi"
        }
        cpu_idle = false
      }

      env {
        name  = "ENV"
        value = "production"
      }
      env {
        name  = "SERVER_PORT"
        value = "8080"
      }
      env {
        name  = "ACCOUNTS_SERVICE_URL"
        value = "https://accounts.neurontechnologies.ai"
      }

      env {
        name = "JWT_SECRET"
        value_source {
          secret_key_ref {
            secret  = google_secret_manager_secret.jwt_secret.secret_id
            version = "latest"
          }
        }
      }
      env {
        name = "LICENSE_ADMIN_TOKEN"
        value_source {
          secret_key_ref {
            secret  = google_secret_manager_secret.license_admin_token.secret_id
            version = "latest"
          }
        }
      }

      ports {
        container_port = 8080
        name           = "http1"
      }

      startup_probe {
        http_get {
          path = "/actuator/health"
          port = 8080
        }
        initial_delay_seconds = 2
        timeout_seconds       = 5
        period_seconds        = 5
        failure_threshold     = 6
      }

      liveness_probe {
        http_get {
          path = "/actuator/health"
          port = 8080
        }
        timeout_seconds   = 5
        period_seconds    = 30
        failure_threshold = 3
      }
    }

    max_instance_request_concurrency = 1000
  }

  traffic {
    type    = "TRAFFIC_TARGET_ALLOCATION_TYPE_LATEST"
    percent = 100
  }

  depends_on = [
    google_project_iam_member.api_secret_accessor,
    google_secret_manager_secret_version.jwt_secret,
  ]
}

# ── Prod — europe-west1 ───────────────────────────────────────────────────────

resource "google_cloud_run_v2_service" "api_eu" {
  name     = "api-prod-eu"
  location = "europe-west1"
  project  = var.project_id
  ingress  = "INGRESS_TRAFFIC_ALL"
  labels   = local.api_labels

  template {
    service_account = google_service_account.api.email

    scaling {
      min_instance_count = 1
      max_instance_count = 100
    }

    containers {
      image = local.api_image

      resources {
        limits = {
          cpu    = "2"
          memory = "1Gi"
        }
        cpu_idle = false
      }

      env {
        name  = "ENV"
        value = "production"
      }
      env {
        name  = "SERVER_PORT"
        value = "8080"
      }
      env {
        name  = "ACCOUNTS_SERVICE_URL"
        value = "https://accounts.neurontechnologies.ai"
      }

      env {
        name = "JWT_SECRET"
        value_source {
          secret_key_ref {
            secret  = google_secret_manager_secret.jwt_secret.secret_id
            version = "latest"
          }
        }
      }
      env {
        name = "LICENSE_ADMIN_TOKEN"
        value_source {
          secret_key_ref {
            secret  = google_secret_manager_secret.license_admin_token.secret_id
            version = "latest"
          }
        }
      }

      ports {
        container_port = 8080
        name           = "http1"
      }

      startup_probe {
        http_get {
          path = "/actuator/health"
          port = 8080
        }
        initial_delay_seconds = 2
        timeout_seconds       = 5
        period_seconds        = 5
        failure_threshold     = 6
      }

      liveness_probe {
        http_get {
          path = "/actuator/health"
          port = 8080
        }
        timeout_seconds   = 5
        period_seconds    = 30
        failure_threshold = 3
      }
    }

    max_instance_request_concurrency = 1000
  }

  traffic {
    type    = "TRAFFIC_TARGET_ALLOCATION_TYPE_LATEST"
    percent = 100
  }

  depends_on = [google_project_iam_member.api_secret_accessor]
}

# ── Prod — asia-northeast1 ────────────────────────────────────────────────────

resource "google_cloud_run_v2_service" "api_apac" {
  name     = "api-prod-apac"
  location = "asia-northeast1"
  project  = var.project_id
  ingress  = "INGRESS_TRAFFIC_ALL"
  labels   = local.api_labels

  template {
    service_account = google_service_account.api.email

    scaling {
      min_instance_count = 1
      max_instance_count = 100
    }

    containers {
      image = local.api_image

      resources {
        limits = {
          cpu    = "2"
          memory = "1Gi"
        }
        cpu_idle = false
      }

      env {
        name  = "ENV"
        value = "production"
      }
      env {
        name  = "SERVER_PORT"
        value = "8080"
      }
      env {
        name  = "ACCOUNTS_SERVICE_URL"
        value = "https://accounts.neurontechnologies.ai"
      }

      env {
        name = "JWT_SECRET"
        value_source {
          secret_key_ref {
            secret  = google_secret_manager_secret.jwt_secret.secret_id
            version = "latest"
          }
        }
      }
      env {
        name = "LICENSE_ADMIN_TOKEN"
        value_source {
          secret_key_ref {
            secret  = google_secret_manager_secret.license_admin_token.secret_id
            version = "latest"
          }
        }
      }

      ports {
        container_port = 8080
        name           = "http1"
      }

      startup_probe {
        http_get {
          path = "/actuator/health"
          port = 8080
        }
        initial_delay_seconds = 2
        timeout_seconds       = 5
        period_seconds        = 5
        failure_threshold     = 6
      }

      liveness_probe {
        http_get {
          path = "/actuator/health"
          port = 8080
        }
        timeout_seconds   = 5
        period_seconds    = 30
        failure_threshold = 3
      }
    }

    max_instance_request_concurrency = 1000
  }

  traffic {
    type    = "TRAFFIC_TARGET_ALLOCATION_TYPE_LATEST"
    percent = 100
  }

  depends_on = [google_project_iam_member.api_secret_accessor]
}