import * as SecureStore from "expo-secure-store";
import { Platform } from "react-native";

interface Storage {
  getItem(key: string): string | null;
  setItem(key: string, value: string): void;
  removeItem(key: string): void;
}

class WebStorage implements Storage {
  getItem(key: string): string | null {
    if (typeof window === "undefined") return null;
    return window.localStorage.getItem(key);
  }

  setItem(key: string, value: string) {
    if (typeof window === "undefined") return;
    window.localStorage.setItem(key, value);
  }

  removeItem(key: string) {
    if (typeof window === "undefined") return;
    console.log(`[WebStorage] Removing key: ${key}`);
    window.localStorage.removeItem(key);
    console.log(`[WebStorage] Key removed. Verification:`, window.localStorage.getItem(key));
  }
}

class NativeStorage implements Storage {
  getItem(key: string): string | null {
    return SecureStore.getItem(key);
  }

  setItem(key: string, value: string) {
    SecureStore.setItem(key, value);
  }

  removeItem(key: string) {
    console.log(`[NativeStorage] Removing key: ${key}`);
    SecureStore.setItem(key, "");
    console.log(`[NativeStorage] Key set to empty string`);
  }
}

export const storage: Storage = Platform.OS === "web" ? new WebStorage() : new NativeStorage();