syntax = "proto3";

package notify.v1;

import "buf/validate/validate.proto";
import "google/protobuf/timestamp.proto";
import "notify/v1/types.proto";

message SendNotificationRequest {
  Payload payload = 1 [(buf.validate.field).required = true];
  Resource resource = 2 [(buf.validate.field).required = true];
}

// SendAttachmentResponse is sent when message is successful.
message SendNotificationResponse {
  // notification_id is the id of the notification.
  //
  // Guaranteed to be unique even on distributed environment.
  //
  // notification_id can be used in `SendAttachment` rpc to
  // attach binary data to the message.
  string notification_id = 1;

  // upload_url is https url to upload the attachment. The endpoint
  // already has the notification_id embedded in the url so attachments
  // send to this url are automatically associated with the notification id.
  //
  // Use this url if the `SendAttachment` rpc is hard to implement or unspported.
  //
  // The endpoint requires Content-Type header to be set
  // and the behavior of the endpoint depends on the Content-Type
  // value.
  //
  // If Content-Type is `multipart/form-data`, the endpoint will
  // each part of the form must come with Content-Disposition header,
  // and in that header,`filename` (without asterisk (*)) field must be set.
  //
  // See: https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Content-Disposition#as_a_header_for_a_multipart_body
  //
  // If Content-Type is not `multipart/form-data`, the request must
  // contain header `X-File-Name`.
  //
  // Filenames are sanitized and unsupported characters are replaced with underscores `_`.
  //
  // Each filenames must be unique. Not doing so will result in undefined behavior.
  string upload_url = 2;
}

message Payload {
  // message is the content of the notification.
  //
  // message should be short and concise since they are
  // intended as forefront information.
  //
  // details should go to the `details` field.
  string message = 1 [(buf.validate.field).required = true];
  // level is the severity of the message.
  //
  // current implementation treats LEVEL_UNSPECIFIED as LEVEL_INFO,
  // but it's recommended to set the level explicitly to avoid
  // surprises in the future.
  Level level = 2;

  // code is the error code of the message.
  string code = 3;

  // details adds context to the message.
  //
  // like invalid inputs,
  // request payloads, backend response, etc.
  //
  // Anything that can enrich why this message
  // appears will help.
  //
  // DO NOT INCLUDE BINARIES LIKE IMAGES, PDFS, DOCS, IN
  // THIS PAYLOAD. USE `SendAttachment` rpc
  // to attach binary values instead since they are designed
  // for streaming. Server and Client RAM
  // can be eaten alive if you ignore this predicament since GRPC
  // handles via whole messages.
  oneof details {
    // Sends JSON as details.
    //
    // In the report page, this will be rendered with JSONGrid.
    bytes d_json = 4;
    // Sends text as details.
    //
    // Markdown syntax is supported and markdown will be rendered
    // on the report page.
    string d_text = 5;
  }
  // error is the error message that is sent.
  oneof error {
    // sends error details as JSON.
    //
    // like details, do not include binaries in this field.
    //
    // In the report page, this will be rendered with JSONGrid.
    bytes e_json = 6;
    // sends error details as text.
    //
    // Markdown syntax is supported and markdown will be rendered
    // on the report page.
    string e_text = 7;
  }
  // id is the unique identifier of the message.
  //
  // message with same id is considered as the same message
  // even if the content is different.
  string id = 8;

  // trace_id is the trace id of the message.
  //
  // trace_id is used to trace the message across services.
  //
  // Leave this empty/unset if no traces are available.
  string trace_id = 9;

  // span_id is the span id of the message.
  //
  // span_id is used to trace the message within the service/scope.
  //
  // Leave this empty/unset if no spans are available.
  string span_id = 10;

  // timestamp is the timestamp of the message.
  //
  // if unset or zero, the server will use the current time.
  google.protobuf.Timestamp timestamp = 11;
}

// Resource contains information about who is sending the notification.
//
// Resourcd values be the same as long the same instance is up.
//
// for frontends, it's recommended to treat Resource like a user session data.
//
// for backends, resource refers to the service that is sending the notification.
message Resource {
  // The name of the service that is sending the notification.
  //
  // This is used to identify the service that is sending the notification.
  //
  // The value of name should be related to the product or service.
  // e.g. `sbn`, `superapp`, `hyperion`, `robo`.
  //
  // `name`, `type`, and `environment` combination are used to select which channel the
  // discord notification is sent.
  string name = 1 [(buf.validate.field).string.min_len = 1];

  // type refers to the type of the service provided.
  //
  // e.g. `frontend`, `cron-job`, `consumer`
  //
  // `name`, `type`, and `environment` combination are used to select which channel the
  // discord notification is sent.
  string type = 2 [(buf.validate.field).string.min_len = 1];

  // environment refers to the environment of the service.
  //
  // Environment must be one of the following:
  //
  //    - ENVIRONMENT_DEVELOPMENT
  //    - ENVIRONMENT_STAGING
  //    - ENVIRONMENT_PRODUCTION
  //    - ENVIRONMENT_TESTING
  //
  // `name`, `type`, and `environment` combination are used to select which channel the
  // discord notification is sent.
  Environment environment = 3 [(buf.validate.field).enum = {
    in: [
      1, // ENVIRONMENT_DEVELOPMENT
      2, // ENVIRONMENT_STAGING
      3, // ENVIRONMENT_PRODUCTION
      4 // ENVIRONMENT_TESTING
    ]
  }];
  optional string version = 4;
  // domain specifies whose message this belongs to.
  //
  // It's very recommended for this service to be set.
  //
  // This will help zen to categorize messages when building
  // reports.
  ServiceDomain domain = 5;

  // attributes are informations that enriches the service.
  //
  // like Session ID, Region, User-Agent, etc.
  map<string, string> attributes = 6;
}

enum ServiceDomain {
  SERVICE_DOMAIN_UNSPECIFIED = 0;
  SERVICE_DOMAIN_FRONTEND = 1;
  SERVICE_DOMAIN_BACKEND = 2;
}