syntax = "proto3";
package topfans.notification;

option go_package = "github.com/topfans/backend/pkg/proto/notification;notification";

import "proto/common.proto";
import "google/api/annotations.proto";
import "google/protobuf/struct.proto";

service NotificationService {
  rpc CreateNotification(CreateNotificationRequest) returns (CreateNotificationResponse) {
    option (google.api.http) = {
      post: "/internal/v1/notifications"
      body: "*"
    };
  }
  rpc GetNotifications(GetNotificationsRequest) returns (GetNotificationsResponse) {
    option (google.api.http) = { get: "/api/v1/notifications" };
  }
  rpc GetUnreadCount(GetUnreadCountRequest) returns (GetUnreadCountResponse) {
    option (google.api.http) = { get: "/api/v1/notifications/unread-count" };
  }
  rpc MarkAsRead(MarkAsReadRequest) returns (MarkAsReadResponse) {
    option (google.api.http) = { post: "/api/v1/notifications/{id}/read" };
  }
  rpc MarkAsReadByTarget(MarkAsReadByTargetRequest) returns (MarkAsReadByTargetResponse) {
    option (google.api.http) = { post: "/api/v1/notifications/targets/{target_id}/read" };
  }
  rpc MarkAllAsRead(MarkAllAsReadRequest) returns (MarkAllAsReadResponse) {
    option (google.api.http) = { post: "/api/v1/notifications/read-all" };
  }
  rpc DeleteNotification(DeleteNotificationRequest) returns (DeleteNotificationResponse) {
    option (google.api.http) = { delete: "/api/v1/notifications/{id}" };
  }
  rpc DeleteByTarget(DeleteByTargetRequest) returns (DeleteByTargetResponse) {
    option (google.api.http) = { delete: "/api/v1/notifications/targets/{target_id}" };
  }

  // ========== 设备注册(推送 cid 上报) ==========

  // 注册/更新当前用户的推送设备 cid;同 cid 重复注册为更新,user 变化时也更新归属。
  rpc RegisterDevice(RegisterDeviceRequest) returns (RegisterDeviceResponse) {
    option (google.api.http) = {
      post: "/api/v1/notifications/devices"
      body: "*"
    };
  }

  // 注销指定 cid 的推送(登出 / 客户端主动关闭通知)。
  rpc UnregisterDevice(UnregisterDeviceRequest) returns (UnregisterDeviceResponse) {
    option (google.api.http) = {
      post: "/api/v1/notifications/devices/unregister"
      body: "*"
    };
  }
}

message Notification {
  int64 id = 1; int64 user_id = 2; int64 star_id = 3;
  string type = 4; string title = 5; string content = 6;
  google.protobuf.Struct data = 7;
  bool is_read = 8; int64 created_at = 9; int64 read_at = 10;

  // 列表层聚合：仅 type=like 且按 target_id 聚合时返回
  bool aggregated = 11;
  int32 total_count = 12;
  repeated ActorPreview actors = 13;
  int64 target_id = 14;
}

message ActorPreview {
  int64 user_id = 1; string nickname = 2; string avatar = 3;
  int64 liked_at = 4;
}

message CreateNotificationRequest {
  int64 user_id = 1; int64 star_id = 2;
  string type = 3; string title = 4; string content = 5;
  google.protobuf.Struct data = 6;
}
message CreateNotificationResponse {
  topfans.common.BaseResponse base = 1;
  int64 id = 2;
}

message GetNotificationsRequest {
  string type = 1;
  string tab = 2;
  int32 page = 3; int32 page_size = 4;
}
message GetNotificationsResponse {
  topfans.common.BaseResponse base = 1;
  repeated Notification items = 2;
  int64 total = 3;
  int32 page = 4; int32 page_size = 5;
}

message GetUnreadCountRequest {}
message UnreadCount {
  int32 like = 1; int32 system = 2; int32 activity = 3; int32 total = 4;
}
message GetUnreadCountResponse {
  topfans.common.BaseResponse base = 1;
  UnreadCount counts = 2;
}

message MarkAsReadRequest { int64 id = 1; }
message MarkAsReadResponse { topfans.common.BaseResponse base = 1; }

message MarkAsReadByTargetRequest { int64 target_id = 1; }
message MarkAsReadByTargetResponse {
  topfans.common.BaseResponse base = 1; int32 affected = 2;
}

message MarkAllAsReadRequest { string type = 1; }
message MarkAllAsReadResponse {
  topfans.common.BaseResponse base = 1; int32 affected = 2;
}

message DeleteNotificationRequest { int64 id = 1; }
message DeleteNotificationResponse { topfans.common.BaseResponse base = 1; }

message DeleteByTargetRequest { int64 target_id = 1; }
message DeleteByTargetResponse {
  topfans.common.BaseResponse base = 1; int32 affected = 2;
}

// ========== 设备注册消息 ==========

// RegisterDeviceRequest 注册/更新推送设备。
// 行为:按 cid 主键 upsert。同 cid 已存在时更新归属(user/platform/version);不存在则插入。
message RegisterDeviceRequest {
  string cid = 1;
  string platform = 2;     // ios / android / harmony
  string app_version = 3;
  string device_model = 4;
}
message RegisterDeviceResponse {
  topfans.common.BaseResponse base = 1;
  int64 id = 2;            // user_devices.id(便于客户端排错/对账)
}

// UnregisterDeviceRequest 注销指定 cid 的推送。cid 为空时注销当前用户的所有设备。
message UnregisterDeviceRequest {
  string cid = 1;
}
message UnregisterDeviceResponse {
  topfans.common.BaseResponse base = 1;
  int32 affected = 2;      // 受影响的行数
}