import { LeaveBalance } from '@/types';
import apiClient from '@/lib/api/axios-instance';
import { createHeaders } from '@/lib/api';
import { isAxiosError } from 'axios';

class LeaveBalanceApi {
  private baseUrl = '/api/LeaveBalance';

  async getAll(): Promise<LeaveBalance[]> {
    try {
      console.log('LeaveBalanceApi: Fetching all leave balances');
      const response = await apiClient.get(this.baseUrl);
      
      console.log('LeaveBalanceApi: Successfully fetched all leave balances');
      return response.data || [];
    } catch (error) {
      if (isAxiosError(error)) {
        console.error('LeaveBalanceApi: Error fetching all leave balances:', error.message);
        if (error.response) {
          console.error('LeaveBalanceApi: Response status:', error.response.status);
          console.error('LeaveBalanceApi: Response data:', error.response.data);
        }
      } else {
        console.error('LeaveBalanceApi: Unknown error fetching all leave balances:', error);
      }
      return [];
    }
  }

  async getByEmployeeIdAndYear(employeeId: number, year: number): Promise<LeaveBalance[]> {
    try {
      console.log(`LeaveBalanceApi: Fetching leave balance for employee ${employeeId} and year ${year}`);
      const response = await apiClient.get(`${this.baseUrl}/employee/${employeeId}/year/${year}`);
      
      console.log(`LeaveBalanceApi: Successfully fetched leave balance for employee ${employeeId}`);
      return response.data || [];
    } catch (error) {
      if (isAxiosError(error)) {
        console.error(`LeaveBalanceApi: Error fetching leave balance for employee ${employeeId}:`, error.message);
        if (error.response) {
          console.error('LeaveBalanceApi: Response status:', error.response.status);
          console.error('LeaveBalanceApi: Response data:', error.response.data);
        }
      } else {
        console.error(`LeaveBalanceApi: Unknown error fetching leave balance for employee ${employeeId}:`, error);
      }
      return [];
    }
  }

  async getByEmployeeId(employeeId: number): Promise<LeaveBalance[]> {
    try {
      console.log(`LeaveBalanceApi: Fetching all leave balances for employee ${employeeId}`);
      const response = await apiClient.get(`${this.baseUrl}/employee/${employeeId}`);
      
      console.log(`LeaveBalanceApi: Successfully fetched all leave balances for employee ${employeeId}`);
      return response.data || [];
    } catch (error) {
      if (isAxiosError(error)) {
        console.error(`LeaveBalanceApi: Error fetching all leave balances for employee ${employeeId}:`, error.message);
        if (error.response) {
          console.error('LeaveBalanceApi: Response status:', error.response.status);
          console.error('LeaveBalanceApi: Response data:', error.response.data);
        }
      } else {
        console.error(`LeaveBalanceApi: Unknown error fetching all leave balances for employee ${employeeId}:`, error);
      }
      return [];
    }
  }

  async getById(id: number): Promise<LeaveBalance | null> {
    try {
      console.log(`LeaveBalanceApi: Fetching leave balance with ID ${id}`);
      const response = await apiClient.get(`${this.baseUrl}/${id}`);
      
      console.log(`LeaveBalanceApi: Successfully fetched leave balance with ID ${id}`);
      return response.data;
    } catch (error) {
      if (isAxiosError(error)) {
        console.error(`LeaveBalanceApi: Error fetching leave balance with ID ${id}:`, error.message);
        if (error.response) {
          console.error('LeaveBalanceApi: Response status:', error.response.status);
          console.error('LeaveBalanceApi: Response data:', error.response.data);
        }
      } else {
        console.error(`LeaveBalanceApi: Unknown error fetching leave balance with ID ${id}:`, error);
      }
      return null;
    }
  }

  async create(leaveBalance: LeaveBalance): Promise<LeaveBalance | null> {
    try {
      console.log('LeaveBalanceApi: Creating new leave balance', leaveBalance);
      
      const response = await apiClient.post(this.baseUrl, leaveBalance, {
        headers: createHeaders(true),
        withCredentials: false
      });
      
      console.log('LeaveBalanceApi: Successfully created leave balance', response.data);
      return response.data;
    } catch (error) {
      if (isAxiosError(error)) {
        console.error('LeaveBalanceApi: Error creating leave balance:', error.message);
        if (error.response) {
          console.error('LeaveBalanceApi: Response status:', error.response.status);
          console.error('LeaveBalanceApi: Response data:', error.response.data);
        }
      } else {
        console.error('LeaveBalanceApi: Unknown error creating leave balance:', error);
      }
      throw error;
    }
  }

  async update(id: number, leaveBalance: LeaveBalance): Promise<LeaveBalance | null> {
    try {
      console.log(`LeaveBalanceApi: Updating leave balance ${id}`, leaveBalance);
      
      const response = await apiClient.put(`${this.baseUrl}/${id}`, leaveBalance);
      
      console.log(`LeaveBalanceApi: Successfully updated leave balance ${id}`, response.data);
      return response.data;
    } catch (error) {
      if (isAxiosError(error)) {
        console.error(`LeaveBalanceApi: Error updating leave balance ${id}:`, error.message);
        if (error.response) {
          console.error('LeaveBalanceApi: Response status:', error.response.status);
          console.error('LeaveBalanceApi: Response data:', error.response.data);
        }
      } else {
        console.error(`LeaveBalanceApi: Unknown error updating leave balance ${id}:`, error);
      }
      throw error;
    }
  }

  async delete(id: number): Promise<boolean> {
    try {
      console.log(`LeaveBalanceApi: Deleting leave balance ${id}`);
      await apiClient.delete(`${this.baseUrl}/${id}`);
      console.log(`LeaveBalanceApi: Successfully deleted leave balance ${id}`);
      return true;
    } catch (error) {
      if (isAxiosError(error)) {
        console.error(`LeaveBalanceApi: Error deleting leave balance ${id}:`, error.message);
        if (error.response) {
          console.error('LeaveBalanceApi: Response status:', error.response.status);
        }
      } else {
        console.error(`LeaveBalanceApi: Unknown error deleting leave balance ${id}:`, error);
      }
      return false;
    }
  }
}

export const leaveBalanceApi = new LeaveBalanceApi();