<?php

namespace App\Http\Controllers\Api;

use App\Http\Controllers\Controller;
use App\Models\Employee;
use App\Models\Payslip;
use App\Services\EmployeeService;
use Illuminate\Http\Request;
use Exception;

class PayslipApiController extends Controller
{
    protected EmployeeService $employeeService;

    public function __construct(EmployeeService $employeeService)
    {
        $this->employeeService = $employeeService;
    }

    public function index(Request $request)
    {
        try {
            $employee = $this->employeeService->resolveEmployee($request->user());
        } catch (Exception $e) {
            return response()->json([
                'success' => false,
                'data' => [],
                'message' => 'Employee profile not found',
                'errors' => null,
            ], 403);
        }

        $user = $request->user();
        $employeeId = $employee ? $employee->id : $user->id;

        $payslips = Payslip::whereIn('employee_id', [$employeeId, $user->id])
            ->orderBy('created_at', 'desc')
            ->get()
            ->map(function ($p) {
                $downloadUrl = url("/api/payslips/{$p->id}/pdf");
                return [
                    'id' => $p->id,
                    'employee_id' => $p->employee_id,
                    'payslip_number' => $p->payslip_number ?? ('PAY-' . str_pad($p->id, 5, '0', STR_PAD_LEFT)),
                    'pay_period_start' => $p->salary_month ? $p->salary_month : ($p->created_at ? $p->created_at->format('M 01, Y') : date('M 01, Y')),
                    'pay_period_end' => $p->salary_month ? $p->salary_month : ($p->created_at ? $p->created_at->format('M t, Y') : date('M t, Y')),
                    'pay_date' => $p->created_at ? $p->created_at->format('M d, Y') : date('M d, Y'),
                    'period' => $p->salary_month ?? 'Current Period',
                    'basic_salary' => (float)($p->basic_salary ?? 0),
                    'allowances' => (float)($p->allowance ?? 0),
                    'deductions' => (float)($p->commission ?? 0),
                    'net_pay' => (float)($p->net_payble ?? $p->basic_salary ?? 0),
                    'pdf_url' => $downloadUrl,
                    'download_url' => $downloadUrl,
                    'created_at' => $p->created_at ? $p->created_at->format('Y-m-d') : date('Y-m-d'),
                ];
            });

        return response()->json([
            'success' => true,
            'data' => $payslips,
            'message' => null,
            'errors' => null,
        ]);
    }

    public function showPdf(Request $request, $id)
    {
        try {
            $employee = $this->employeeService->resolveEmployee($request->user());
        } catch (Exception $e) {
            return response()->json([
                'success' => false,
                'data' => null,
                'message' => 'Employee profile not found',
                'errors' => null,
            ], 403);
        }

        $payslip = Payslip::where('id', $id)
            ->whereIn('employee_id', [$employee->id, $employee->user_id])
            ->first();

        if (!$payslip) {
            return response()->json([
                'success' => false,
                'data' => null,
                'message' => 'Payslip record not found or access denied',
                'errors' => null,
            ], 404);
        }

        $url = url("/payslip/{$id}/download");

        return response()->json([
            'success' => true,
            'message' => 'Payslip document generated',
            'data' => [
                'id' => $payslip->id,
                'pdf_url' => $url,
                'download_url' => $url,
            ],
            'errors' => null,
        ]);
    }
}