@php
    use App\Models\SalaryReview;
    use Illuminate\Support\Carbon;

    $currencySymbol = '৳';

    $reviewGross = static function (SalaryReview $review, bool $after = true): ?float {
        $snapshot = $after ? ($review->after_snapshot ?? []) : ($review->before_snapshot ?? []);
        if (! isset($snapshot['gross_salary'])) {
            return null;
        }

        return (float) $snapshot['gross_salary'];
    };

    $formatMoney = static function (?float $amount) use ($currencySymbol): string {
        if ($amount === null) {
            return '—';
        }

        return $currencySymbol.' '.number_format($amount, 0);
    };

    $formatTimelineDate = static function ($date): string {
        if ($date === null || $date === '') {
            return '—';
        }

        return $date instanceof Carbon
            ? $date->format('d F, Y')
            : Carbon::parse($date)->format('d F, Y');
    };

    $oldestReview = $approvedSalaryReviews
        ->sortBy(fn (SalaryReview $review) => sprintf('%s-%06d', $review->effective_date?->format('Y-m-d') ?? '9999-99-99', $review->id))
        ->first();

    $initialGross = null;
    $initialDate = $staff->joing_date;

    if ($oldestReview) {
        $initialGross = $reviewGross($oldestReview, false);
    } elseif ($pendingSalaryReviews->isNotEmpty()) {
        $referenceReview = $pendingSalaryReviews
            ->sortBy(fn (SalaryReview $review) => sprintf('%s-%06d', $review->effective_date?->format('Y-m-d') ?? '9999-99-99', $review->id))
            ->first();
        $initialGross = $referenceReview ? $reviewGross($referenceReview, false) : null;
    }

    if ($initialGross === null && isset($salary) && $salary !== null && $approvedSalaryReviews->isEmpty() && $pendingSalaryReviews->isEmpty()) {
        $initialGross = (float) $salary;
    }

    $showInitial = $initialGross !== null && (
        $approvedSalaryReviews->isNotEmpty() || $pendingSalaryReviews->isNotEmpty()
    );

    if ($showInitial && $approvedSalaryReviews->count() === 1 && $pendingSalaryReviews->isEmpty()) {
        $onlyAfter = $reviewGross($approvedSalaryReviews->first(), true);
        if ($onlyAfter !== null && abs($initialGross - $onlyAfter) < 0.005) {
            $showInitial = false;
        }
    }

    $hasTimeline = $pendingSalaryReviews->isNotEmpty()
        || $approvedSalaryReviews->isNotEmpty()
        || ($showInitial && $initialGross !== null);
@endphp
<div class="card">
    <div class="card-body">
        <div class="staff-salary-timeline-title">{{ __('Salary Growth Timeline') }}</div>

        @if($hasTimeline)
            <ul class="staff-salary-timeline mb-0">
                @foreach($pendingSalaryReviews as $review)
                    @php $proposedGross = $reviewGross($review, true); @endphp
                    <li class="staff-salary-timeline__item staff-salary-timeline__item--pending">
                        @if($proposedGross !== null)
                            <div class="staff-salary-timeline__amount">{{ $formatMoney($proposedGross) }}</div>
                            <div class="staff-salary-timeline__date">
                                {{ $formatTimelineDate($review->effective_date) }}
                                <span class="text-muted">· {{ __('In progress') }}</span>
                            </div>
                        @else
                            <div class="staff-salary-timeline__label">{{ __('In progress') }}</div>
                            @if($review->effective_date)
                                <div class="staff-salary-timeline__date">{{ $formatTimelineDate($review->effective_date) }}</div>
                            @endif
                        @endif
                    </li>
                @endforeach

                @foreach($approvedSalaryReviews as $review)
                    <li class="staff-salary-timeline__item">
                        <div class="staff-salary-timeline__amount">{{ $formatMoney($reviewGross($review, true)) }}</div>
                        <div class="staff-salary-timeline__date">{{ $formatTimelineDate($review->effective_date) }}</div>
                    </li>
                @endforeach

                @if($showInitial)
                    <li class="staff-salary-timeline__item staff-salary-timeline__item--initial">
                        <div class="staff-salary-timeline__amount">{{ $formatMoney($initialGross) }}</div>
                        <div class="staff-salary-timeline__date">
                            @if($initialDate)
                                {{ $formatTimelineDate($initialDate) }}
                            @else
                                {{ __('Initial salary') }}
                            @endif
                        </div>
                    </li>
                @endif
            </ul>
        @else
            <div class="staff-salary-timeline-empty">
                @if(isset($salary) && $salary !== null)
                    <div class="staff-salary-timeline__amount mb-1">{{ $formatMoney((float) $salary) }}</div>
                    <div class="staff-salary-timeline__date">{{ __('Current salary') }}</div>
                @else
                    {{ __('No salary review history yet.') }}
                @endif
            </div>
        @endif

        @if(!$isStaffViewer && $hasTimeline)
            <div class="mt-3 pt-2 border-top">
                <a href="{{ route('admin.staffs.history', $staff->id) }}" class="btn btn-sm btn-outline-secondary btn-block">
                    <i class="fas fa-history mr-1"></i> {{ __('Full salary history') }}
                </a>
            </div>
        @endif
    </div>
</div>