syntax = "proto3";
package email.v1;

import "google/protobuf/timestamp.proto";



enum EmailPriority {
  EMAIL_PRIORITY_UNSPECIFIED = 0;
  EMAIL_PRIORITY_LOW         = 1;
  EMAIL_PRIORITY_NORMAL      = 2;
  EMAIL_PRIORITY_HIGH        = 3;
}

enum SendStatus {
  SEND_STATUS_UNSPECIFIED = 0;
  SEND_STATUS_QUEUED      = 1;
  SEND_STATUS_SENT        = 2;
  SEND_STATUS_FAILED      = 3;
  SEND_STATUS_SENDING     = 4;
}



message EmailAddress {
  string email = 1;
  string name  = 2;
}

message Attachment {
  string filename     = 1;
  string content_type = 2;
  bytes  data         = 3;
  string url          = 4;
}


message SendEmailRequest {
  EmailAddress        from        = 1;
  repeated EmailAddress to        = 2;
  repeated EmailAddress cc        = 3;
  repeated EmailAddress bcc       = 4;
  string              subject     = 5;
  string              text_body   = 6;
  string              html_body   = 7;
  repeated Attachment attachments = 8;
  EmailPriority       priority    = 9;
  map<string, string> headers     = 10;
  string              reply_to    = 11;
}

message SendEmailResponse {
  string     message_id  = 1;
  SendStatus status      = 2;
  string     provider    = 3;
  google.protobuf.Timestamp sent_at = 4;
}

message BatchSendEmailRequest {
  repeated SendEmailRequest emails    = 1;
  bool                      fail_fast = 2;
}

message BatchSendEmailResponse {
  repeated SendEmailResponse results       = 1;
  int32                      success_count = 2;
  int32                      failure_count = 3;
}

message GetEmailStatusRequest {
  string message_id = 1;
}

message GetEmailStatusResponse {
  string     message_id   = 1;
  SendStatus status       = 2;
  string     error_detail = 3;
  google.protobuf.Timestamp updated_at = 4;
}


service EmailService {
  rpc SendEmail(SendEmailRequest) returns (SendEmailResponse);
  rpc BatchSendEmail(BatchSendEmailRequest) returns (BatchSendEmailResponse);
  rpc GetEmailStatus(GetEmailStatusRequest) returns (GetEmailStatusResponse);
  rpc StreamBatchStatus(BatchSendEmailRequest)
      returns (stream SendEmailResponse);
}