@php
    use App\Models\LeaveType;
    use Carbon\Carbon;

    /*
    |--------------------------------------------------------------------------
    | 1) إعداد تواريخ العقد والإشعار
    |--------------------------------------------------------------------------
    */
    $contractEndDate    = $employee->contract_end_date ? Carbon::parse($employee->contract_end_date) : null;
    $notificationPeriod = $employee->notification_period ?? 30;
    $notificationDate   = $contractEndDate ? $contractEndDate->copy()->subDays($notificationPeriod) : null;

    $today = Carbon::today();
    $contractStart = Carbon::parse($employee->start_date);

    // نهاية الاستحقاق = min(اليوم, نهاية العقد إن وجدت)
    $eligibilityEnd = $today->copy();
    if ($contractEndDate && $contractEndDate->lessThan($eligibilityEnd)) {
        $eligibilityEnd = $contractEndDate->copy();
    }

    /*
    |--------------------------------------------------------------------------
    | 2) دالة حساب الاستحقاق السنوي "تراكمي" من بداية العقد إلى اليوم
    |    - نحسب التراكم عبر السنوات كاملة/جزئية (مع مراعاة السنة الكبيسة)
    |    - بدون تكرار توزيع (Proration) مرتين
    |--------------------------------------------------------------------------
    */
    $calcAccruedAnnualEntitlement = function (Carbon $start, Carbon $end, float $capPerYear): float {
        if ($start->gt($end)) return 0.0;

        $total = 0.0;

        $cursor = $start->copy();
        while ($cursor->lte($end)) {
            $yearStart = $cursor->copy()->startOfYear();
            $yearEnd   = $cursor->copy()->endOfYear();

            $segmentStart = $cursor->copy()->greaterThan($yearStart) ? $cursor->copy() : $yearStart->copy();
            $segmentEnd   = $end->copy()->lessThan($yearEnd) ? $end->copy() : $yearEnd->copy();

            $daysInYear   = $yearStart->isLeapYear() ? 366 : 365;
            $eligibleDays = $segmentStart->diffInDays($segmentEnd) + 1; // +1 لاحتساب يوم النهاية

            // استحقاق السنة = capPerYear * (أيام مؤهلة / أيام السنة)
            $total += ($capPerYear * $eligibleDays) / $daysInYear;

            // انتقل لأول يوم من السنة التالية
            $cursor = $yearEnd->copy()->addDay();
        }

        return round($total, 2);
    };

    /*
    |--------------------------------------------------------------------------
    | 3) جلب أنواع الإجازات بحسب الجنس
    |--------------------------------------------------------------------------
    */
    $leaveTypes = LeaveType::query()
        ->where(function ($q) use ($employee) {
            $q->where('gender_applicable', 'Both')
              ->orWhere('gender_applicable', $employee->gender);
        })
        ->orderBy('name')
        ->get();

    /*
    |--------------------------------------------------------------------------
    | 4) أرصدة لكل نوع + تجميع السنوي (تراكمي)
    |--------------------------------------------------------------------------
    */
    $leaveBalances = [];
    $annualTotals  = ['entitlement' => 0.0, 'used' => 0.0, 'remaining' => 0.0];

    foreach ($leaveTypes as $type) {

        // المستخدم من هذا النوع خلال "فترة العقد حتى اليوم" (تراكمي)
        $usedDays = (float) $employee->leaves
            ->where('status', 'approved')
            ->where('leave_type_id', $type->id)
            ->filter(function ($lv) use ($contractStart, $eligibilityEnd) {
                if (empty($lv->start_date)) return false;
                $sd = Carbon::parse($lv->start_date);
                return $sd->between($contractStart, $eligibilityEnd, true);
            })
            ->sum('duration');

        // حدود النوع
        $maxDaysConfigured = is_null($type->duration_max_days) ? null : (float) $type->duration_max_days;

        // cap سنوي افتراضي 21 إذا لم يحدد
        $cap = $type->frequency === 'ANNUAL'
            ? ($maxDaysConfigured ?? 21.0)
            : ($maxDaysConfigured ?? 0.0);

        $entitlement = 0.0;
        $remaining   = 0.0;

        switch ($type->frequency) {
            case 'ANNUAL':
                // استحقاق سنوي تراكمي من بداية العقد إلى اليوم (بدون تكرار توزيع)
                $entitlement = $calcAccruedAnnualEntitlement($contractStart, $eligibilityEnd, (float) $cap);
                $remaining   = max(0, round($entitlement - $usedDays, 2));

                $annualTotals['entitlement'] += $entitlement;
                break;

            case 'AGREEMENT':
            case 'ONCE_LIFETIME':
            case 'ONCE_EVENT':
                $entitlement = (float) $cap;
                $remaining   = max(0, round($entitlement - $usedDays, 2));
                break;

            case 'MULTIPLE_EVENT':
                $entitlement = (float) $cap;
                $remaining   = $entitlement; // Per event limit
                break;

            default:
                $entitlement = (float) $cap;
                $remaining   = max(0, round($entitlement - $usedDays, 2));
        }

        $leaveBalances[] = [
            'id'          => $type->id,
            'name'        => $type->name,
            'frequency'   => $type->frequency,
            'pay_rule'    => $type->pay_rule,
            'gender'      => $type->gender_applicable,
            'min_days'    => $type->duration_min_days,
            'max_days'    => $type->duration_max_days,
            'entitlement' => $entitlement,
            'used'        => $usedDays,
            'remaining'   => $remaining,
        ];
    }

    /*
    |--------------------------------------------------------------------------
    | 5) ملخص السنوي بشكل مركزي (تراكمي من بداية العقد إلى اليوم)
    |--------------------------------------------------------------------------
    */
    $annualTypeIds = collect($leaveTypes)->where('frequency', 'ANNUAL')->pluck('id');

    $usedDaysAllAnnual = (float) $employee->leaves
        ->where('status', 'approved')
        ->whereIn('leave_type_id', $annualTypeIds->all())
        ->filter(function ($lv) use ($contractStart, $eligibilityEnd) {
            if (empty($lv->start_date)) return false;
            $sd = Carbon::parse($lv->start_date);
            return $sd->between($contractStart, $eligibilityEnd, true);
        })
        ->sum('duration');

    $totalEntitlement   = round($annualTotals['entitlement'], 2);
    $usedDaysAllAnnual  = round($usedDaysAllAnnual, 2);
    $remainingLeaveDays = max(0, round($totalEntitlement - $usedDaysAllAnnual, 2));

    $annualTotals['used']      = $usedDaysAllAnnual;
    $annualTotals['remaining'] = $remainingLeaveDays;

    $groupedByFrequency = collect($leaveBalances)->groupBy('frequency');

    $freqLabels = [
        'ANNUAL'         => __('Annual'),
        'AGREEMENT'      => __('By Agreement'),
        'ONCE_LIFETIME'  => __('Once in Lifetime'),
        'ONCE_EVENT'     => __('Per Event (Once)'),
        'MULTIPLE_EVENT' => __('Per Event (Multiple)'),
    ];

    $payRuleColors = [
        'FULL_PAY'    => 'bg-green-100 text-green-800',
        'PARTIAL_PAY' => 'bg-yellow-100 text-yellow-800',
        'NO_PAY'      => 'bg-red-100 text-red-800',
        'MIXED'       => 'bg-blue-100 text-blue-800',
    ];
@endphp


{{-- ======================= Contract Summary ======================= --}}
<h3 class="text-lg font-semibold mb-2">{{ __('Contract Summary') }}</h3>
<table class="w-full text-sm table-auto border border-gray-200 mb-6">
    <tr>
        <th class="px-4 py-2 border">{{ __('Start Date') }}</th>
        <td class="px-4 py-2 border">{{ $employee->start_date }}</td>
    </tr>
    <tr>
        <th class="px-4 py-2 border">{{ __('Notification Period') }}</th>
        <td class="px-4 py-2 border">{{ $employee->notification_period ?? 0 }} {{ __('days') }}</td>
    </tr>
    <tr>
        <th class="px-4 py-2 border">{{ __('Contract Extended') }}</th>
        <td class="px-4 py-2 border">{{ $employee->contract_extension_days ?? 0 }} {{ __('days') }}</td>
    </tr>
    <tr>
        <th class="px-4 py-2 border">{{ __('Weekly off days') }}</th>
        <td class="px-4 py-2 border">{{ $employee->weekly_off_days ?? 0 }} {{ __('days') }}</td>
    </tr>
    <tr>
        <th class="px-4 py-2 border">{{ __('Weekly off days days') }}</th>
        <td class="px-4 py-2 border">
            @php
                $weeklyDaysRaw = $employee->weekly_off_days_days;
                $weeklyDaysArr = is_string($weeklyDaysRaw) ? json_decode($weeklyDaysRaw, true) : (is_array($weeklyDaysRaw) ? $weeklyDaysRaw : []);
            @endphp
            @if(!empty($weeklyDaysArr))
                @foreach(array_reverse($weeklyDaysArr) as $day)
                    <span class="px-3 py-1 rounded border transition bg-blue-600 text-white border-blue-600 dark:bg-gray-700 cursor-not-allowed dark:border-gray-600">
                        {{ __(ucfirst($day)) }}
                    </span>
                @endforeach
            @endif
        </td>
    </tr>
    @if($contractEndDate)
        <tr>
            <th class="px-4 py-2 border">{{ __('Contract End Date') }}</th>
            <td class="px-4 py-2 border">{{ $contractEndDate->toDateString() }}</td>
        </tr>
        <tr>
            <th class="px-4 py-2 border">{{ __('Notification Date') }}</th>
            <td class="px-4 py-2 border">{{ $notificationDate ? $notificationDate->toDateString() : '-' }}</td>
        </tr>
    @endif
</table>

{{-- ======================= Annual Leave (compat) ======================= --}}
<h3 class="text-lg font-semibold mb-2">{{ __('Annual Leave (based on contract start)') }}</h3>
<table class="w-full text-sm table-auto border border-gray-200 mb-6">
    <tr>
        <th class="px-4 py-2 border">{{ __('Annual Entitlement (Accumulated to date)') }}</th>
        <td class="px-4 py-2 border">{{ number_format($totalEntitlement, 2) }}</td>
    </tr>
    <tr>
        <th class="px-4 py-2 border">{{ __('Used Leave Days (Annual)') }}</th>
        <td class="px-4 py-2 border">{{ number_format($usedDaysAllAnnual, 2) }}</td>
    </tr>
    <tr>
        <th class="px-4 py-2 border">{{ __('Remaining Leave (Annual)') }}</th>
        <td class="px-4 py-2 border">{{ number_format($remainingLeaveDays, 2) }}</td>
    </tr>
</table>

{{-- ======================= Detailed by Frequency ======================= --}}
<h3 class="text-lg font-semibold mb-2">{{ __('Leave Summary by Type & Conditions') }}</h3>

@foreach($groupedByFrequency as $freq => $rows)
    <h4 class="text-base font-semibold mb-2">
        {{ $freqLabels[$freq] ?? $freq }}
    </h4>

    <table class="w-full text-sm table-auto border border-gray-200 mb-6">
        <thead>
        <tr class="bg-gray-50">
            <th class="px-3 py-2 border text-left">{{ __('Leave Type') }}</th>
            <th class="px-3 py-2 border text-left">{{ __('Conditions') }}</th>
            <th class="px-3 py-2 border text-right">{{ __('Entitlement') }}</th>
            <th class="px-3 py-2 border text-right">
                @if($freq === 'MULTIPLE_EVENT')
                    {{ __('Available per Event') }}
                @else
                    {{ __('Used') }}
                @endif
            </th>
            <th class="px-3 py-2 border text-right">
                @if($freq === 'MULTIPLE_EVENT')
                    {{ __('Note') }}
                @else
                    {{ __('Remaining') }}
                @endif
            </th>
        </tr>
        </thead>

        <tbody>
        @foreach($rows as $r)
            @php $prc = $payRuleColors[$r['pay_rule']] ?? 'bg-gray-100 text-gray-800'; @endphp
            <tr>
                <td class="px-3 py-2 border">
                    <div class="font-medium">{{ $r['name'] }}</div>
                    <div class="text-xs text-gray-500">
                        {{ __('Min') }}: {{ $r['min_days'] ?? '-' }} /
                        {{ __('Max') }}: {{ $r['max_days'] ?? '-' }}
                    </div>
                </td>

                <td class="px-3 py-2 border">
                    <span class="inline-block text-xs px-2 py-1 rounded border mr-1">
                        {{ __('Gender') }}: {{ __($r['gender']) }}
                    </span>
                    <span class="inline-block text-xs px-2 py-1 rounded {{ $prc }}">
                        {{ __($r['pay_rule']) }}
                    </span>
                </td>

                <td class="px-3 py-2 border text-right">
                    {{ number_format($r['entitlement'], 2) }}
                </td>

                <td class="px-3 py-2 border text-right">
                    @if($r['frequency'] === 'MULTIPLE_EVENT')
                        {{ number_format($r['entitlement'], 2) }}
                    @else
                        {{ number_format($r['used'], 2) }}
                    @endif
                </td>

                <td class="px-3 py-2 border text-right">
                    @if($r['frequency'] === 'MULTIPLE_EVENT')
                        <span class="text-xs text-gray-500">{{ __('Per event limit') }}</span>
                    @else
                        {{ number_format($r['remaining'], 2) }}
                    @endif
                </td>
            </tr>
        @endforeach
        </tbody>

        @if($freq === 'ANNUAL')
            <tfoot>
            <tr class="bg-gray-50 font-semibold">
                <td class="px-3 py-2 border text-right" colspan="2">{{ __('Totals (Annual)') }}</td>
                <td class="px-3 py-2 border text-right">{{ number_format($annualTotals['entitlement'], 2) }}</td>
                <td class="px-3 py-2 border text-right">{{ number_format($annualTotals['used'], 2) }}</td>
                <td class="px-3 py-2 border text-right">{{ number_format($annualTotals['remaining'], 2) }}</td>
            </tr>
            </tfoot>
        @endif
    </table>
@endforeach