syntax = "proto3";

package webui;

// Login request from Web UI
message WebUiLoginRequest {
  string username = 1; // 1-32 chars
  string password = 2; // 1-64 chars (plain or hashed)
}

// Login response
message WebUiLoginResponse {
  bool success = 1;
  optional string token = 2; // session/JWT when success
  optional string error = 3; // error message when failed
}

// Logout response
message WebUiLogoutResponse {
    bool success = 1;
    string error = 2;  
}

// User data structure
message WebUiUser {
  string username = 1;      // 1-32 chars
  bytes  password_hash = 2; // 32 bytes (SHA-256)
}

// User list (max 5 users)
message WebUiUserList {
  repeated WebUiUser users = 1;
}

// Request to get users
message GetUsersRequest {
}

// Response with users
message GetUsersResponse {
  repeated string usernames = 1; // List of usernames
}

// Request to add user
message AddUserRequest {
  string username = 1;
  string password = 2;
}

// Response to add user
message AddUserResponse {
  bool success = 1;
  optional string error = 2; // e.g., "table full", "user exists"
}

// Request to delete user
message DeleteUserRequest {
  string username = 1;
}

// Response to delete user
message DeleteUserResponse {
  bool success = 1;
  optional string error = 2; // e.g., "user not found"
}

// Request to update user password
message UpdateUserPasswordRequest {
  string username = 1;
  string new_password = 2;
}

// Response to update user password
message UpdateUserPasswordResponse {
  bool success = 1;
  optional string error = 2; // e.g., "user not found"
}

// Auth check response
message WebUiAuthCheckResponse {
  bool authenticated = 1;
  optional string username = 2;
}