export interface AppConfig {
  server: {
    port: number;
  };
  selenium: {
    remoteUrl: string;
    browser: string;
  };
  cache: {
    basePath: string;
  };
  addons: {
    directory: string;
  };
}

export interface TocSelector {
  scope: string;
  linkPattern: string;
}

export interface ContentSelector {
  scope: string;
}

export type StealthStep =
  | { type: 'waitMs'; ms: number }
  | { type: 'waitForElement'; selector: string; timeoutMs?: number }
  | { type: 'click'; selector: string }
  | { type: 'scrollToBottom' };

export interface StealthConfig {
  enabled: boolean;
  /** @deprecated Use `steps` instead. Kept for backward compatibility. */
  waitMs?: number;
  addons: string[];
  steps?: StealthStep[];
}

export interface DownloadConfig {
  parallelism: number;
  minContentBytes: number;
}

export interface NovelDefinition {
  slug: string;
  type: 'epub' | 'web-scraped';
  source: {
    url?: string;           // web-scraped TOC strategy: the table-of-contents page URL
    urls?: string[];        // epub: download URL(s)
    urlTemplate?: string;   // web-scraped increment strategy: template with {n} placeholder, e.g. "https://example.com/chapter-{n}"
    startIndex?: number;    // increment: chapter number of the first {n} value (default 1)
  };
  selectors?: {
    toc?: TocSelector;
    content?: ContentSelector;
  };
  stealth?: StealthConfig;
  download?: DownloadConfig;
}

export interface NovelsConfig {
  novels: NovelDefinition[];
}