<?php

use App\Models\User;
use App\Models\Employee;
use App\Models\LeaveType;
use App\Models\LeavePolicy;
use App\Models\LeaveBalance;
use App\Models\LeaveApplication;

test('manual adjustments and carried forward leaves are correctly preserved when leave applications are approved', function () {
    // 1. Create Company user
    $company = User::create([
        'name' => 'Test Company',
        'email' => 'company_' . rand(1000, 9999) . '@test.com',
        'password' => bcrypt('password'),
        'type' => 'company',
    ]);

    // 2. Create Employee user
    $employeeUser = User::create([
        'name' => 'Test Employee',
        'email' => 'employee_' . rand(1000, 9999) . '@test.com',
        'password' => bcrypt('password'),
        'type' => 'employee',
    ]);

    $employee = Employee::create([
        'user_id' => $employeeUser->id,
        'employee_id' => 'EMP-' . rand(1000, 9999),
        'date_of_joining' => '2026-01-01',
        'employee_status' => 'active',
        'created_by' => $company->id,
    ]);

    // 3. Create Leave Type
    $leaveType = LeaveType::create([
        'name' => 'Sick Leave',
        'status' => 'active',
        'created_by' => $company->id,
    ]);

    // 4. Create Leave Policy
    $leavePolicy = LeavePolicy::create([
        'name' => 'Sick Leave Policy',
        'leave_type_id' => $leaveType->id,
        'status' => 'active',
        'created_by' => $company->id,
    ]);

    // 5. Create Leave Balance with a manual adjustment of -3.00 days
    $leaveBalance = LeaveBalance::create([
        'employee_id' => $employeeUser->id,
        'leave_type_id' => $leaveType->id,
        'leave_policy_id' => $leavePolicy->id,
        'year' => 2026,
        'allocated_days' => 5.00,
        'carried_forward' => 0.00,
        'manual_adjustment' => -3.00,
        'used_days' => 0.00,
        'remaining_days' => 2.00,
        'created_by' => $company->id,
    ]);

    // 6. Create approved Leave Application for 2 days
    $leaveApplication = LeaveApplication::create([
        'employee_id' => $employeeUser->id,
        'leave_type_id' => $leaveType->id,
        'leave_policy_id' => $leavePolicy->id,
        'start_date' => '2026-06-01',
        'end_date' => '2026-06-02',
        'total_days' => 2.00,
        'reason' => 'Feeling sick',
        'status' => 'approved',
        'created_by' => $company->id,
    ]);

    // 7. Update leave balance
    $leaveApplication->updateLeaveBalance();

    // 8. Assert
    $freshBalance = $leaveBalance->fresh();
    expect((float)$freshBalance->used_days)->toBe(2.00);
    // (5.00 + 0.00 - 3.00) - 2.00 = 0.00
    expect((float)$freshBalance->remaining_days)->toBe(0.00);
});