syntax = "proto3";

package chatto.api.v1;

import "buf/validate/validate.proto";
import "chatto/api/v1/pagination.proto";
import "chatto/api/v1/presence.proto";
import "chatto/api/v1/users.proto";
import "google/protobuf/timestamp.proto";

// Public user/member row used by user directory, room membership, and mention
// surfaces.
message DirectoryMember {
  // Public user fields.
  User user = 1;
  // Explicit roles assigned to the user. Member listings include the virtual
  // `everyone` role for parity with Chatto's permission model.
  repeated string roles = 2;
  // Account creation time when known.
  google.protobuf.Timestamp created_at = 3;
}

// Request for members of one room.
message ListMembersRequest {
  reserved 3, 4;
  reserved "limit", "offset";

  // Required. Room whose effective members should be listed. Existing members
  // and room.manage holders may list a channel room; other nonmembers need both
  // room.list and room.join.
  string room_id = 1 [(buf.validate.field).string.min_len = 1];
  // Optional case-insensitive search against login and display name.
  string search = 2 [(buf.validate.field).string.max_len = 100];
  // Defaults to 250 results when absent or limit is zero. Maximum: 500.
  PageRequest page = 5;
  // Optional status filter applied before pagination. Empty means all statuses.
  // Select ONLINE, AWAY, and DO_NOT_DISTURB for all connected members.
  // Presence can change between pages; use realtime updates to keep it current.
  repeated PresenceStatus presence_statuses = 6 [(buf.validate.field).repeated = {
    max_items: 4
    unique: true
    items: {enum: {defined_only: true, not_in: [0]}}
  }];
}

// Room membership IDs. Resolve profiles with UserService.BatchGetUsers.
// Empty searches do not read user profiles. Search results require profile
// reads to match names. Both paths use ascending user ID order.
message ListMembersResponse {
  reserved 1, 2, 3;
  reserved "members", "total_count", "has_more";

  // Current member IDs in ascending order. Missing or deleted users are omitted.
  repeated string user_ids = 5;
  // Page metadata for the members that match both filters.
  PageInfo page = 4;
}

// Request one member of one room by stable user ID.
message GetMemberRequest {
  // Required room ID.
  string room_id = 1 [(buf.validate.field).string.min_len = 1];
  // Required target user ID.
  string user_id = 2 [(buf.validate.field).string.min_len = 1];
}

// Room member response.
message GetMemberResponse {
  // Requested room member.
  DirectoryMember member = 1;
}

// Request room member rows for a set of stable user IDs.
message BatchGetMembersRequest {
  // Required room ID.
  string room_id = 1 [(buf.validate.field).string.min_len = 1];
  // Required target user IDs. Unknown IDs and users that are not members of the
  // room are omitted from the response.
  repeated string user_ids = 2 [(buf.validate.field).repeated = {
    min_items: 1
    max_items: 100
    items: {
      string: {min_len: 1}
    }
  }];
}

// Batch room member response.
message BatchGetMembersResponse {
  // Found members. The server preserves first-seen request order and
  // de-duplicates repeated IDs.
  repeated DirectoryMember members = 1;
}