syntax = "proto3";

package chatto.api.v1;

import "buf/validate/validate.proto";

// Public role metadata used for rendering role mentions, labels, and catalogs.
message Role {
  // Stable role name used in permission and assignment records.
  string name = 1;
  // Display name shown in user-facing role UIs.
  string display_name = 2;
  // Optional role description.
  string description = 3;
  // Whether this is a built-in role.
  bool is_system = 4;
  // Display/order position.
  int32 position = 5;
  // Whether messages may notify users assigned to this role.
  bool pingable = 6;
}

// Request the current role catalog.
message ListRolesRequest {}

// Snapshot of the role catalog visible to the authenticated viewer.
message ListRolesResponse {
  // Roles sorted by position.
  repeated Role roles = 1;
}

// Request one public role by stable role name.
message GetRoleRequest {
  // Required stable role name.
  string name = 1 [(buf.validate.field).string.min_len = 1];
}

// Public role lookup response.
message GetRoleResponse {
  // Requested role.
  Role role = 1;
}

// Request public role records for a set of stable role names.
message BatchGetRolesRequest {
  // Required role names. Unknown names are omitted from the response.
  repeated string names = 1 [(buf.validate.field).repeated = {
    min_items: 1
    max_items: 100
    items: {
      string: {min_len: 1}
    }
  }];
}

// Batch public role response.
message BatchGetRolesResponse {
  // Found roles. The server preserves first-seen request order and
  // de-duplicates repeated names.
  repeated Role roles = 1;
}

// Provides authenticated reads for public role metadata.
service RoleService {
  // Lists the current role catalog as a finite snapshot. Requires an
  // authenticated user.
  rpc ListRoles(ListRolesRequest) returns (ListRolesResponse);
  // Gets one public role by stable name. Returns NOT_FOUND when the role is
  // unknown.
  rpc GetRole(GetRoleRequest) returns (GetRoleResponse);
  // Gets public role records for multiple role names referenced by member rows,
  // mentions, or integration clients.
  rpc BatchGetRoles(BatchGetRolesRequest) returns (BatchGetRolesResponse);
}