import type { ProviderId, ProviderType } from '@/lib/types/provider';
import type { ProviderSettings } from '@/lib/types/settings';

interface NewCustomProviderConfig {
  name: string;
  type: ProviderType;
  baseUrl: string;
  icon: string;
  requiresApiKey: boolean;
}

export function formatContextWindow(size?: number): string {
  if (!size) return '-';

  // For M: prefer decimal (use decimal for exact thousands)
  if (size >= 1000000) {
    if (size % 1000000 === 0) {
      return `${size / 1000000}M`;
    }
    return `${(size / 1000000).toFixed(1)}M`;
  }

  // For K: prefer decimal if divisible by 1000, otherwise use binary
  if (size >= 1000) {
    if (size % 1000 === 0) {
      return `${size / 1000}K`;
    }
    return `${Math.floor(size / 1024)}K`;
  }

  return size.toString();
}

export function getProviderTypeLabel(type: string, t: (key: string) => string): string {
  const translationKey = `settings.providerTypes.${type}`;
  const translated = t(translationKey);
  // If translation exists (not equal to key), use it; otherwise fallback to type
  return translated !== translationKey ? translated : type;
}

export function createCustomProviderSettings(
  providerData: NewCustomProviderConfig,
): ProviderSettings {
  return {
    apiKey: '',
    baseUrl: providerData.baseUrl || '',
    models: [],
    name: providerData.name,
    type: providerData.type,
    defaultBaseUrl: providerData.baseUrl || undefined,
    icon: providerData.icon || undefined,
    requiresApiKey: providerData.requiresApiKey,
    isBuiltIn: false,
  };
}

interface VerifyModelRequestConfig {
  providerId: ProviderId;
  modelId: string;
  apiKey?: string;
  baseUrl?: string;
  providerType?: ProviderType | string;
  requiresApiKey?: boolean;
}

export function createVerifyModelRequest(config: VerifyModelRequestConfig) {
  return {
    apiKey: config.apiKey || '',
    baseUrl: config.baseUrl || '',
    model: `${config.providerId}:${config.modelId}`,
    providerType: config.providerType,
    requiresApiKey: config.requiresApiKey,
  };
}