import { logger } from '@librechat/data-schemas';
import { removeNullishValues } from 'librechat-data-provider';
import type { TCustomConfig, TConfigDefaults } from 'librechat-data-provider';
import type { AppConfig } from '~/types/config';
import { isMemoryEnabled } from '~/memory/config';

/**
 * Loads the default interface object.
 * @param params - The loaded custom configuration.
 * @param params.config - The loaded custom configuration.
 * @param params.configDefaults - The custom configuration default values.
 * @returns default interface object.
 */
export async function loadDefaultInterface({
  config,
  configDefaults,
}: {
  config?: Partial<TCustomConfig>;
  configDefaults: TConfigDefaults;
}): Promise<AppConfig['interfaceConfig']> {
  const { interface: interfaceConfig } = config ?? {};
  const { interface: defaults } = configDefaults;
  const hasModelSpecs = (config?.modelSpecs?.list?.length ?? 0) > 0;
  const includesAddedEndpoints = (config?.modelSpecs?.addedEndpoints?.length ?? 0) > 0;

  const memoryConfig = config?.memory;
  const memoryEnabled = isMemoryEnabled(memoryConfig);
  /** Only disable memories if memory config is present but disabled/invalid */
  const shouldDisableMemories = memoryConfig && !memoryEnabled;

  const loadedInterface: AppConfig['interfaceConfig'] = removeNullishValues({
    // UI elements - use schema defaults
    endpointsMenu:
      interfaceConfig?.endpointsMenu ?? (hasModelSpecs ? false : defaults.endpointsMenu),
    modelSelect:
      interfaceConfig?.modelSelect ??
      (hasModelSpecs ? includesAddedEndpoints : defaults.modelSelect),
    parameters: interfaceConfig?.parameters ?? (hasModelSpecs ? false : defaults.parameters),
    presets: interfaceConfig?.presets ?? (hasModelSpecs ? false : defaults.presets),
    sidePanel: interfaceConfig?.sidePanel ?? defaults.sidePanel,
    privacyPolicy: interfaceConfig?.privacyPolicy ?? defaults.privacyPolicy,
    termsOfService: interfaceConfig?.termsOfService ?? defaults.termsOfService,
    mcpServers: interfaceConfig?.mcpServers ?? defaults.mcpServers,
    customWelcome: interfaceConfig?.customWelcome ?? defaults.customWelcome,

    // Permissions - only include if explicitly configured
    bookmarks: interfaceConfig?.bookmarks,
    memories: shouldDisableMemories ? false : interfaceConfig?.memories,
    prompts: interfaceConfig?.prompts,
    multiConvo: interfaceConfig?.multiConvo,
    agents: interfaceConfig?.agents,
    temporaryChat: interfaceConfig?.temporaryChat,
    runCode: interfaceConfig?.runCode,
    webSearch: interfaceConfig?.webSearch,
    fileSearch: interfaceConfig?.fileSearch,
    fileCitations: interfaceConfig?.fileCitations,
    peoplePicker: interfaceConfig?.peoplePicker,
    marketplace: interfaceConfig?.marketplace,
  });

  let i = 0;
  const logSettings = () => {
    // log interface object and model specs object (without list) for reference
    logger.warn(`\`interface\` settings:\n${JSON.stringify(loadedInterface, null, 2)}`);
    logger.warn(
      `\`modelSpecs\` settings:\n${JSON.stringify(
        { ...(config?.modelSpecs ?? {}), list: undefined },
        null,
        2,
      )}`,
    );
  };

  // warn about config.modelSpecs.prioritize if true and presets are enabled, that default presets will conflict with prioritizing model specs.
  if (config?.modelSpecs?.prioritize && loadedInterface.presets) {
    logger.warn(
      "Note: Prioritizing model specs can conflict with default presets if a default preset is set. It's recommended to disable presets from the interface or disable use of a default preset.",
    );
    if (i === 0) i++;
  }

  // warn about config.modelSpecs.enforce if true and if any of these, endpointsMenu, modelSelect, presets, or parameters are enabled, that enforcing model specs can conflict with these options.
  if (
    config?.modelSpecs?.enforce &&
    (loadedInterface.endpointsMenu ||
      loadedInterface.modelSelect ||
      loadedInterface.presets ||
      loadedInterface.parameters)
  ) {
    logger.warn(
      "Note: Enforcing model specs can conflict with the interface options: endpointsMenu, modelSelect, presets, and parameters. It's recommended to disable these options from the interface or disable enforcing model specs.",
    );
    if (i === 0) i++;
  }
  // warn if enforce is true and prioritize is not, that enforcing model specs without prioritizing them can lead to unexpected behavior.
  if (config?.modelSpecs?.enforce && !config?.modelSpecs?.prioritize) {
    logger.warn(
      "Note: Enforcing model specs without prioritizing them can lead to unexpected behavior. It's recommended to enable prioritizing model specs if enforcing them.",
    );
    if (i === 0) i++;
  }

  if (i > 0) {
    logSettings();
  }

  return loadedInterface;
}