/**
 * Namecheap API Client - Domains Transfer Module
 */
import { HttpClient } from './http-client.js';
import type {
  ITransferGetListResponse,
  ITransferGetStatusResponse,
  ITransferCreateResponse,
  ITransferUpdateStatusResponse,
  ITransferGetInfoResponse,
  ITransferInfo,
  ITransferStatusInfo
} from './types.js';

export class DomainsTransfer {
  private client: HttpClient;

  /**
   * Create a new Domains Transfer API handler
   * @param client HTTP client instance
   */
  constructor(client: HttpClient) {
    this.client = client;
  }

  /**
   * Get a list of domain transfers
   * @param page Page number
   * @param pageSize Number of items per page
   * @param listType Type of transfers to list
   * @returns List of domain transfers
   */
  async getList(
    page: number = 1,
    pageSize: number = 20,
    listType: 'ALL' | 'INPROGRESS' | 'COMPLETED' | 'FAILED' = 'ALL'
  ): Promise<{
    transfers: ITransferInfo[];
    paging: {
      totalItems: number;
      currentPage: number;
      pageSize: number;
    };
  }> {
    // Make the API request
    const response = await this.client.request<ITransferGetListResponse>(
      'namecheap.domains.transfer.getList',
      {
        Page: page,
        PageSize: pageSize,
        ListType: listType
      }
    );

    // Extract transfer information from the response
    const commandResponse = response.ApiResponse.CommandResponse[0];
    const transferList = commandResponse.TransferGetListResult[0];
    const paging = commandResponse.Paging[0];

    // Convert the parsed XML structure to a more usable format
    const transfers = (transferList.Transfer || []).map(transfer => ({
      id: parseInt(transfer.$.ID, 10),
      domainName: transfer.$.DomainName,
      status: transfer.$.Status,
      statusDescription: transfer.$.StatusDescription,
      date: transfer.$.Date,
      lockTransferDate: transfer.$.LockTransferDate || null,
      transferOrderDetailId: parseInt(transfer.$.TransferOrderDetailID || '0', 10),
      isLocked: transfer.$.IsLocked?.toLowerCase() === 'true',
      authInfo: transfer.$.AuthInfo || null
    }));

    // Convert paging information
    const pagingInfo = paging ? {
      totalItems: parseInt(paging.TotalItems[0], 10),
      currentPage: parseInt(paging.CurrentPage[0], 10),
      pageSize: parseInt(paging.PageSize[0], 10)
    } : {
      totalItems: transfers.length,
      currentPage: 1,
      pageSize: transfers.length
    };

    return {
      transfers,
      paging: pagingInfo
    };
  }

  /**
   * Get the status of a domain transfer
   * @param transferId Transfer ID
   * @returns Transfer status information
   */
  async getStatus(transferId: number): Promise<ITransferStatusInfo> {
    // Make the API request
    const response = await this.client.request<ITransferGetStatusResponse>(
      'namecheap.domains.transfer.getStatus',
      { TransferID: transferId }
    );

    // Extract status information from the response
    const commandResponse = response.ApiResponse.CommandResponse[0];
    const statusInfo = commandResponse.TransferGetStatusResult[0].$;

    return {
      id: parseInt(statusInfo.TransferID, 10),
      status: statusInfo.Status,
      statusDescription: statusInfo.StatusDescription,
      domainName: statusInfo.DomainName,
      date: statusInfo.Date,
      lockTransferDate: statusInfo.LockTransferDate || null,
      transferOrderDetailId: parseInt(statusInfo.TransferOrderDetailID || '0', 10),
      isLocked: statusInfo.IsLocked?.toLowerCase() === 'true',
      authInfo: statusInfo.AuthInfo || null
    };
  }

  /**
   * Create a new domain transfer
   * @param domainName Domain name to transfer
   * @param years Number of years to renew for
   * @param authCode Authorization code from current registrar
   * @param options Additional options
   * @returns Transfer creation result
   */
  async create(
    domainName: string,
    years: number,
    authCode: string,
    options?: {
      promotionCode?: string;
      addFreeWhoisguard?: boolean;
      whoisguardEnable?: boolean;
      idnCode?: string;
      premiumPrice?: number;
      eapFee?: number;
    }
  ): Promise<{
    transferId: number;
    transferOrderId: number;
    isSuccess: boolean;
    transferStatus: string;
    statusDescription: string;
    chargedAmount: number;
  }> {
    // Prepare the request parameters
    const params: Record<string, string | number | boolean> = {
      DomainName: domainName,
      Years: years,
      EPPCode: authCode
    };

    // Add optional parameters
    if (options) {
      if (options.promotionCode) {
        params.PromotionCode = options.promotionCode;
      }

      if (options.addFreeWhoisguard !== undefined) {
        params.AddFreeWhoisguard = options.addFreeWhoisguard;
      }

      if (options.whoisguardEnable !== undefined) {
        params.WGEnable = options.whoisguardEnable;
      }

      if (options.idnCode) {
        params.IdnCode = options.idnCode;
      }

      if (options.premiumPrice !== undefined) {
        params.PremiumPrice = options.premiumPrice;
      }

      if (options.eapFee !== undefined) {
        params.EapFee = options.eapFee;
      }
    }

    // Make the API request
    const response = await this.client.request<ITransferCreateResponse>(
      'namecheap.domains.transfer.create',
      params
    );

    // Extract creation information from the response
    const commandResponse = response.ApiResponse.CommandResponse[0];
    const result = commandResponse.DomainTransferCreateResult[0].$;

    return {
      transferId: parseInt(result.TransferID, 10),
      transferOrderId: parseInt(result.OrderID, 10),
      isSuccess: result.IsSuccess?.toLowerCase() === 'true',
      transferStatus: result.Status,
      statusDescription: result.StatusDescription,
      chargedAmount: parseFloat(result.ChargedAmount)
    };
  }

  /**
   * Update the status of a domain transfer
   * @param transferId Transfer ID
   * @param resubmit Whether to resubmit the transfer
   * @returns Success status
   */
  async updateStatus(transferId: number, resubmit: boolean): Promise<boolean> {
    // Make the API request
    const response = await this.client.request<ITransferUpdateStatusResponse>(
      'namecheap.domains.transfer.updateStatus',
      {
        TransferID: transferId,
        Resubmit: resubmit
      }
    );

    // Check if the operation was successful
    return response.ApiResponse.$.Status === 'OK';
  }

  /**
   * Get detailed information about a domain transfer
   * @param transferId Transfer ID
   * @returns Detailed transfer information
   */
  async getInfo(transferId: number): Promise<{
    transferId: number;
    domainName: string;
    status: string;
    statusDescription: string;
    authInfo: string;
    date: string;
    whoisguardStatus: string;
    orderDate: string;
    orderId: number;
    transferOrderDetailId: number;
  }> {
    // Make the API request
    const response = await this.client.request<ITransferGetInfoResponse>(
      'namecheap.domains.transfer.getInfo',
      { TransferID: transferId }
    );

    // Extract detailed information from the response
    const commandResponse = response.ApiResponse.CommandResponse[0];
    const info = commandResponse.TransferGetInfoResult[0].$;

    return {
      transferId: parseInt(info.TransferID, 10),
      domainName: info.DomainName,
      status: info.Status,
      statusDescription: info.StatusDescription,
      authInfo: info.AuthInfo || '',
      date: info.Date,
      whoisguardStatus: info.WhoisguardStatus || '',
      orderDate: info.OrderDate,
      orderId: parseInt(info.OrderID, 10),
      transferOrderDetailId: parseInt(info.TransferOrderDetailID, 10)
    };
  }
}