import * as plugins from './bunq.plugins.js';
import { BunqAccount } from './bunq.classes.account.js';
import { BunqMonetaryAccount } from './bunq.classes.monetaryaccount.js';
import { BunqNotification, BunqWebhookHandler } from './bunq.classes.notification.js';
import { BunqCrypto } from './bunq.classes.crypto.js';

/**
 * Webhook management for monetary accounts
 */
export class BunqWebhook {
  private bunqAccount: BunqAccount;

  constructor(bunqAccount: BunqAccount) {
    this.bunqAccount = bunqAccount;
  }

  /**
   * Create a webhook for a monetary account
   */
  public async create(monetaryAccount: BunqMonetaryAccount, url: string): Promise<number> {
    await this.bunqAccount.apiContext.ensureValidSession();
    
    const response = await this.bunqAccount.getHttpClient().post(
      `/v1/user/${this.bunqAccount.userId}/monetary-account/${monetaryAccount.id}/notification-filter-url`,
      {
        category: 'MUTATION',
        notification_target: url
      }
    );

    if (response.Response && response.Response[0] && response.Response[0].Id) {
      return response.Response[0].Id.id;
    }

    throw new Error('Failed to create webhook');
  }

  /**
   * List all webhooks for a monetary account
   */
  public async list(monetaryAccount: BunqMonetaryAccount): Promise<Array<{
    id: number;
    url: string;
    category: string;
  }>> {
    await this.bunqAccount.apiContext.ensureValidSession();
    
    const response = await this.bunqAccount.getHttpClient().list(
      `/v1/user/${this.bunqAccount.userId}/monetary-account/${monetaryAccount.id}/notification-filter-url`
    );

    const webhooks: Array<{
      id: number;
      url: string;
      category: string;
    }> = [];

    if (response.Response) {
      for (const item of response.Response) {
        if (item.NotificationFilterUrl) {
          webhooks.push({
            id: item.NotificationFilterUrl.id,
            url: item.NotificationFilterUrl.notification_target,
            category: item.NotificationFilterUrl.category
          });
        }
      }
    }

    return webhooks;
  }

  /**
   * Get a specific webhook
   */
  public async get(monetaryAccount: BunqMonetaryAccount, webhookId: number): Promise<{
    id: number;
    url: string;
    category: string;
  }> {
    await this.bunqAccount.apiContext.ensureValidSession();
    
    const response = await this.bunqAccount.getHttpClient().get(
      `/v1/user/${this.bunqAccount.userId}/monetary-account/${monetaryAccount.id}/notification-filter-url/${webhookId}`
    );

    if (response.Response && response.Response[0] && response.Response[0].NotificationFilterUrl) {
      const webhook = response.Response[0].NotificationFilterUrl;
      return {
        id: webhook.id,
        url: webhook.notification_target,
        category: webhook.category
      };
    }

    throw new Error('Webhook not found');
  }

  /**
   * Update a webhook URL
   */
  public async update(monetaryAccount: BunqMonetaryAccount, webhookId: number, newUrl: string): Promise<void> {
    await this.bunqAccount.apiContext.ensureValidSession();
    
    await this.bunqAccount.getHttpClient().put(
      `/v1/user/${this.bunqAccount.userId}/monetary-account/${monetaryAccount.id}/notification-filter-url/${webhookId}`,
      {
        notification_target: newUrl
      }
    );
  }

  /**
   * Delete a webhook
   */
  public async delete(monetaryAccount: BunqMonetaryAccount, webhookId: number): Promise<void> {
    await this.bunqAccount.apiContext.ensureValidSession();
    
    await this.bunqAccount.getHttpClient().delete(
      `/v1/user/${this.bunqAccount.userId}/monetary-account/${monetaryAccount.id}/notification-filter-url/${webhookId}`
    );
  }
}

/**
 * Webhook server for receiving bunq notifications
 */
export class BunqWebhookServer {
  private bunqAccount: BunqAccount;
  private notification: BunqNotification;
  private handler: BunqWebhookHandler;
  private server?: any; // HTTP server instance
  private port: number;
  private path: string;
  private publicUrl: string;

  constructor(
    bunqAccount: BunqAccount,
    options: {
      port?: number;
      path?: string;
      publicUrl: string;
    }
  ) {
    this.bunqAccount = bunqAccount;
    this.notification = new BunqNotification(bunqAccount);
    this.handler = new BunqWebhookHandler();
    this.port = options.port || 3000;
    this.path = options.path || '/webhook';
    this.publicUrl = options.publicUrl;
  }

  /**
   * Get the webhook handler for registering event callbacks
   */
  public getHandler(): BunqWebhookHandler {
    return this.handler;
  }

  /**
   * Start the webhook server
   */
  public async start(): Promise<void> {
    // Implementation would use an HTTP server library
    // For now, this is a placeholder
    console.log(`Webhook server would start on port ${this.port}`);
  }

  /**
   * Stop the webhook server
   */
  public async stop(): Promise<void> {
    if (this.server) {
      // Stop the server
      console.log('Webhook server stopped');
    }
  }

  /**
   * Register the webhook URL with bunq
   */
  public async register(): Promise<void> {
    const webhookUrl = `${this.publicUrl}${this.path}`;
    // Register for all payment-related events
    await this.notification.setupPaymentWebhook(webhookUrl);
    // Register for all account-related events
    await this.notification.setupAccountWebhook(webhookUrl);
  }

  /**
   * Verify webhook signature
   */
  public verifySignature(body: string, signature: string): boolean {
    const crypto = new BunqCrypto();
    // In production, use bunq's server public key
    return true; // Placeholder
  }
}