import type {
  RedirectUrlProvider,
  OAuthNavigationCallback,
} from "../providers.js";
import { CallbackNavigation, BaseOAuthClientProvider } from "../providers.js";
import { BrowserOAuthStorage } from "./storage.js";

export type { OAuthNavigationCallback } from "../providers.js";

/**
 * Browser navigation handler
 * Redirects the browser window to the authorization URL, optionally invokes an
 * extra callback.
 */
export class BrowserNavigation extends CallbackNavigation {
  constructor(callback?: OAuthNavigationCallback) {
    super((url) => {
      if (typeof window === "undefined") {
        throw new Error("BrowserNavigation requires browser environment");
      }
      window.location.href = url.href;
      return callback?.(url);
    });
  }
}

/**
 * Browser OAuth client provider
 * Uses sessionStorage directly (for web client reference)
 */
export class BrowserOAuthClientProvider extends BaseOAuthClientProvider {
  constructor(serverUrl: string) {
    if (typeof window === "undefined") {
      throw new Error(
        "BrowserOAuthClientProvider requires browser environment",
      );
    }
    const storage = new BrowserOAuthStorage();
    const redirectUrlProvider: RedirectUrlProvider = {
      getRedirectUrl: () => `${window.location.origin}/oauth/callback`,
    };
    const navigation = new BrowserNavigation();

    super(serverUrl, { storage, redirectUrlProvider, navigation }, "normal");
  }
}