export type Result<T> = { ok: T } | { error: string };
export type AsyncRes<T> = Promise<Result<T>>;
// Language object structure for API responses

export interface State {
  user: { name: string; id: number } | null;
}

export interface Language {
  code: string;
  name: string;
  nativeName?: string;
  supportsSource?: boolean;
  supportsTarget?: boolean;
}

// Common interface for all translation services
export interface TranslationService {
  endpoint: string;
  translate(
    text: string,
    sourceLang: string,
    targetLang: string,
  ): AsyncRes<string>;
  getSupportedLanguages(): AsyncRes<Language[]>;
  detect?: (text: string) => Promise<string>;
  transliterate?: (
    text: string[],
    lang: string,
    fromScript: string,
    toScript: string,
  ) => AsyncRes<string>;
}

// Service credentials interface
export interface TranslationCredentials {
  apiKey: string;
  region?: string;
  endpoint?: string;
  projectId?: string;
}

// Translation error class for consistent error handling
export class TranslationError extends Error {
  public statusCode: number;
  public provider: string;

  constructor(message: string, statusCode: number = 500, provider: string) {
    super(message);
    this.name = "TranslationError";
    this.statusCode = statusCode;
    this.provider = provider;
  }
}

// Translation request tracking for rate limiting and analytics
export interface TranslationRequest {
  id: string;
  timestamp: number;
  userId: string;
  provider: string;
  source: string;
  target: string;
  characters: number;
  success: boolean;
  processingTimeMs: number;
}

export type WordData = {
  spelling: string;
  lang: string;
  ipa: string;
  meanings: Meaning[];
  references?: any;
};
export type Meaning = {
  pos: string; // part of speech;
  meaning: string[];
  etymology: string;
  references?: any;
};

export type Paged<T> = { results: T; page: number };
// export type Paged<T> = T & { page: number };
export type AddWord = {
  spelling: string;
  lang: string;
  syllables?: number;
  frequency?: number;
  prosody?: string;
  type: "word" | "expression" | "syllable";
  ipa?: string;
  confidence?: number;
};

export type AddSense = {
  id?: number;
  parent_id: number | bigint;
  spelling: string;
  etymology?: string;
  pos: string;
  ipa?: string;
  prosody?: string;
  senses?: string;
  forms?: string;
  related?: string;
  confidence?: number;
};