resource "kubernetes_namespace" "m3uproxy" {
  metadata {
    annotations = {
      name = "m3uproxy"
    }
    labels = {
      name = "m3uproxy"
    }
    name = "m3uproxy"
  }
}

resource "kubernetes_secret" "m3uproxy_admin_credentials" {
  metadata {
    name      = "m3uproxy-credentials"
    namespace = kubernetes_namespace.m3uproxy.metadata[0].name
  }
  data = {
    username = "tv_admin"
    password = var.admin_password
  }
  type = "Opaque"
}

resource "kubernetes_service_account" "m3uproxy_service_account" {

  metadata {
    name      = "m3uproxy-app-sa"
    namespace = kubernetes_namespace.m3uproxy.metadata[0].name
  }

  automount_service_account_token = false
}

resource "kubernetes_secret" "m3uproxy_config" {
  metadata {
    name      = "m3uproxy-config"
    namespace = kubernetes_namespace.m3uproxy.metadata[0].name
  }

  data = {
    "m3uproxy.json" = local.m3uproxy_config
  }

  type = "Opaque"
}

resource "kubernetes_config_map" "m3uproxy_playlist" {
  metadata {
    name      = "m3uproxy-playlist"
    namespace = kubernetes_namespace.m3uproxy.metadata[0].name
  }

  data = {
    "playlist.m3u8" = local.m3uproxy_playlist
  }

}

resource "kubernetes_deployment" "m3uproxy" {
  metadata {
    name      = "m3uproxy"
    namespace = kubernetes_namespace.m3uproxy.metadata[0].name
  }

  spec {
    replicas = 1

    selector {
      match_labels = {
        app = "m3uproxy"
      }
    }

    strategy {
      type = "RollingUpdate"
    }

    template {
      metadata {
        labels = {
          app = "m3uproxy"
        }
        annotations = {
          "checksum/m3uproxy" = local.m3uproxy_config_checksum
          "checksum/playlist" = local.m3uproxy_playlist_checksum
        }
      }
      spec {
        service_account_name = kubernetes_service_account.m3uproxy_service_account.metadata[0].name
        container {
          name              = "m3uproxy"
          image             = "a13labs/m3uproxy:${local.m3uproxy_version}"
          image_pull_policy = "Always"
          resources {
            requests = {
              memory = "256Mi"
            }
          }

          port {
            container_port = 8080
            name           = "http"
          }
          readiness_probe {
            http_get {
              path = "/health"
              port = "http"
            }
            initial_delay_seconds = 5
            period_seconds        = 10
            failure_threshold     = 10
          }
          env {
            name = "USERNAME"
            value_from {
              secret_key_ref {
                name = kubernetes_secret.m3uproxy_admin_credentials.metadata[0].name
                key  = "username"
              }
            }
          }
          env {
            name = "PASSWORD"
            value_from {
              secret_key_ref {
                name = kubernetes_secret.m3uproxy_admin_credentials.metadata[0].name
                key  = "password"
              }
            }
          }
          security_context {
            allow_privilege_escalation = false
            run_as_user                = 1000
            run_as_group               = 1000
          }
          volume_mount {
            name       = "m3uproxy-config"
            mount_path = "/app/conf/m3uproxy.json"
            sub_path   = "m3uproxy.json"
            read_only  = true
          }
          volume_mount {
            name       = "m3uproxy-playlist"
            mount_path = "/app/conf/playlist.m3u8"
            sub_path   = "playlist.m3u8"
            read_only  = true
          }
          volume_mount {
            name       = "m3uproxy-app-cache"
            mount_path = "/app/cache"
          }
          volume_mount {
            name       = "geoip-db"
            mount_path = "/app/GeoIP"
            read_only  = true
          }
        }
        volume {
          name = "m3uproxy-config"
          secret {
            secret_name = kubernetes_secret.m3uproxy_config.metadata[0].name
            items {
              key  = "m3uproxy.json"
              path = "m3uproxy.json"
            }
          }
        }
        volume {
          name = "m3uproxy-playlist"
          config_map {
            name = kubernetes_config_map.m3uproxy_playlist.metadata[0].name
            items {
              key  = "playlist.m3u8"
              path = "playlist.m3u8"
            }
          }
        }

        volume {
          name = "m3uproxy-app-cache"
          host_path {
            path = local.m3uproxy_cache_path
          }
        }

        volume {
          name = "geoip-db"
          host_path {
            path = local.geoip_path
          }
        }

      }
    }
  }
  lifecycle {
    ignore_changes = [spec[0].template[0].metadata[0].annotations["kubectl.kubernetes.io/restartedAt"]]
  }
}

resource "kubernetes_service" "m3uproxy" {
  metadata {
    name      = "http"
    namespace = kubernetes_namespace.m3uproxy.metadata[0].name
  }

  spec {
    selector = {
      app = "m3uproxy"
    }
    port {
      port        = 8080
      target_port = "http"
    }
    cluster_ip = "None"
  }
}

resource "kubernetes_ingress_v1" "m3uproxy_ingress_http" {
  metadata {
    name      = "m3uproxy-ingress"
    namespace = kubernetes_namespace.m3uproxy.metadata[0].name

    annotations = {
      "kubernetes.io/ingress.class"              = "public"
      "cert-manager.io/cluster-issuer"           = "letsencrypt-prod"
      "kubernetes.io/tls-acme"                   = "true"
      "nginx.ingress.kubernetes.io/ssl-redirect" = "true"
    }
  }
  spec {
    tls {
      hosts       = [local.m3uproxy_fqdn]
      secret_name = "m3uproxy-tls"
    }
    rule {
      host = local.m3uproxy_fqdn
      http {
        path {
          backend {
            service {
              name = "http"
              port {
                number = 8080
              }
            }
          }
        }
      }
    }
  }
}