// Data mapping/transformation utilities for Zoho integration
class ZohoMapper {
  // Map Zoho CRM Lead to standardized format
  static mapLead(zohoLead) {
    return {
      id: zohoLead.id,
      name: zohoLead.Full_Name || zohoLead.Lead_Name,
      email: zohoLead.Email,
      phone: zohoLead.Phone,
      company: zohoLead.Company,
      status: zohoLead.Lead_Status,
      source: zohoLead.Lead_Source,
      createdTime: zohoLead.Created_Time,
      modifiedTime: zohoLead.Modified_Time,
      owner: zohoLead.Owner?.name,
      // Map custom fields if they exist
      customFields: this.mapCustomFields(zohoLead)
    };
  }

  // Map Zoho CRM Contact to standardized format
  static mapContact(zohoContact) {
    return {
      id: zohoContact.id,
      firstName: zohoContact.First_Name,
      lastName: zohoContact.Last_Name,
      email: zohoContact.Email,
      phone: zohoContact.Phone,
      account: zohoContact.Account_Name,
      title: zohoContact.Title,
      department: zohoContact.Department,
      createdTime: zohoContact.Created_Time,
      modifiedTime: zohoContact.Modified_Time,
      owner: zohoContact.Owner?.name,
      customFields: this.mapCustomFields(zohoContact)
    };
  }

  // Map Zoho CRM Deal to standardized format
  static mapDeal(zohoDeal) {
    return {
      id: zohoDeal.id,
      name: zohoDeal.Deal_Name,
      amount: zohoDeal.Amount,
      stage: zohoDeal.Stage,
      probability: zohoDeal.Probability,
      closeDate: zohoDeal.Closing_Date,
      account: zohoDeal.Account_Name,
      contact: zohoDeal.Contact_Name,
      createdTime: zohoDeal.Created_Time,
      modifiedTime: zohoDeal.Modified_Time,
      owner: zohoDeal.Owner?.name,
      customFields: this.mapCustomFields(zohoDeal)
    };
  }

  // Map Zoho People Employee to standardized format
  static mapEmployee(zohoEmployee) {
    return {
      id: zohoEmployee.id,
      employeeId: zohoEmployee.employeeId,
      firstName: zohoEmployee.firstName,
      lastName: zohoEmployee.lastName,
      email: zohoEmployee.email,
      phone: zohoEmployee.phone,
      department: zohoEmployee.department,
      designation: zohoEmployee.designation,
      reportingTo: zohoEmployee.reportingTo,
      joiningDate: zohoEmployee.joiningDate,
      status: zohoEmployee.status,
      customFields: this.mapCustomFields(zohoEmployee)
    };
  }

  // Map Zoho Projects Project to standardized format
  static mapProject(zohoProject) {
    return {
      id: zohoProject.id,
      name: zohoProject.name,
      description: zohoProject.description,
      status: zohoProject.status,
      startDate: zohoProject.start_date,
      endDate: zohoProject.end_date,
      owner: zohoProject.owner?.name,
      createdTime: zohoProject.created_time,
      customFields: this.mapCustomFields(zohoProject)
    };
  }

  // Map Zoho Projects Task to standardized format
  static mapTask(zohoTask) {
    return {
      id: zohoTask.id,
      name: zohoTask.name,
      description: zohoTask.description,
      status: zohoTask.status,
      priority: zohoTask.priority,
      startDate: zohoTask.start_date,
      endDate: zohoTask.end_date,
      assignee: zohoTask.assignee?.name,
      project: zohoTask.project?.name,
      customFields: this.mapCustomFields(zohoTask)
    };
  }

  // Map custom fields from Zoho response
  static mapCustomFields(zohoRecord) {
    const customFields = {};
    if (zohoRecord.Custom_Fields) {
      zohoRecord.Custom_Fields.forEach(field => {
        customFields[field.api_name] = field.value;
      });
    }
    return customFields;
  }

  // Map multiple records using appropriate mapper
  static mapRecords(records, recordType) {
    const mapperMap = {
      'leads': this.mapLead,
      'contacts': this.mapContact,
      'deals': this.mapDeal,
      'employees': this.mapEmployee,
      'projects': this.mapProject,
      'tasks': this.mapTask
    };

    const mapper = mapperMap[recordType];
    if (!mapper) {
      throw new Error(`No mapper found for record type: ${recordType}`);
    }

    return records.map(record => mapper(record));
  }

  // Map Zoho API response to standardized format
  static mapApiResponse(zohoResponse, recordType) {
    const records = zohoResponse.data || [];
    // const mappedRecords = this.mapRecords(records, recordType);
    
    return {
      data: records,
      info: {
        count: zohoResponse.info?.count || mappedRecords.length,
        moreRecords: zohoResponse.info?.more_records || false,
        page: zohoResponse.info?.page || 1
      }
    };
  }
}

module.exports = ZohoMapper;