@extends('components.dashboard.layouts.master')

@section('styles')
    @stack('datatableStyles')
    <style>
        /* ===== Installment Form Styles ===== */
        .installment-form .form-label{font-weight:600;}
        .installment-form .form-control,
        .installment-form .form-select{height:44px;}
        .installment-form .form-control[readonly],
        .installment-form .form-control:disabled{
            background:#f5f7fb; cursor:not-allowed; color:#6e6b7b;
        }
        .installment-form .mb-1{margin-bottom:1rem !important;}
        .installment-form .hint{font-size:.86rem; color:#8a8d93;}
        .installment-form .card-header{border-bottom:1px solid #ebe9f1;}
        .installment-form .btn{min-width:140px}
        .installment-form .form-check-input{
            width:3rem; height:1.5rem;
        }
        .installment-form .form-check-input:checked{
            background-color:#7367F0; border-color:#7367F0;
        }
        @media (max-width:576px){
            .installment-form .btn{width:100%}
        }
    </style>
@endsection

@section('title')
    {{ __('Add installment') }}
@endsection

@section('content')
    <div class="app-content content">
        <div class="content-overlay"></div>
        <div class="header-navbar-shadow"></div>
        <div class="content-wrapper">
            <div class="content-header row"></div>
            <div class="content-body">

                <section class="users-list-wrapper">
                    <x-dashboard.layouts.breadcrumb now="{{ __('Add installment') }}"></x-dashboard.layouts.breadcrumb>

                    <section id="installment-create" class="installment-form">
                        <div class="row">
                            <div class="col-12">
                                <div class="card">
                                    <div class="card-header d-flex justify-content-between align-items-center">
                                        <h4 class="card-title mb-0">{{ __('Add installment') }}</h4>
                                    </div>

                                    <div class="card-content">
                                        <div class="card-body">
                                            <form method="POST" action="{{ route('teacher.installments.store') }}">
                                                @csrf

                                                {{-- Hidden course --}}
                                                <input type="hidden" name="course_id" value="{{ $courseId }}">

                                                <div class="row">
                                                    {{-- Amount --}}
                                                    <div class="col-md-6 mb-1">
                                                        <label class="form-label">{{ __('Amount') }} <span class="text-danger">*</span></label>
                                                        <input type="number" step="0.01" min="0" name="amount"
                                                               value="{{ old('amount') }}"
                                                               class="form-control @error('amount') is-invalid @enderror" required>
                                                        @error('amount')<div class="invalid-feedback">{{ $message }}</div>@enderror
                                                    </div>

                                                    {{-- Minimum Amount --}}
                                                    <div class="col-md-6 mb-1" id="min-amount">
                                                        <label class="form-label">{{ __('Minimum amount') }}</label>
                                                        <input type="number" step="0.01" min="0" name="minimum_amount"
                                                               value="{{ old('minimum_amount') }}"
                                                               class="form-control @error('minimum_amount') is-invalid @enderror">
                                                        <small class="hint">{{ __('Optional: minimum amount accepted for this installment') }}</small>
                                                        @error('minimum_amount')<div class="invalid-feedback">{{ $message }}</div>@enderror
                                                    </div>

                                                    {{-- Due Date --}}
                                                    <div class="col-md-6 mb-1">
                                                        <label class="form-label">{{ __('Due date') }} <span class="text-danger">*</span></label>
                                                        <input type="date" name="due_date" value="{{ old('due_date') }}"
                                                               class="form-control @error('due_date') is-invalid @enderror" required>
                                                        @error('due_date')<div class="invalid-feedback">{{ $message }}</div>@enderror
                                                    </div>

                                                    {{-- Installment Number --}}
                                                    <div class="col-md-6 mb-1">
                                                        <label class="form-label">{{ __('Installment number') }}</label>
                                                        <select class="form-select form-control installment-number"
                                                                name="installment_number" required>
                                                            @foreach($installmentsNumbers as $index => $number)
                                                                <option value="{{ ++$index }}" @selected(old('installment_number', $defaultInstallmentNumber ?? null) == $number)>
                                                                    {{ $number }}
                                                                </option>
                                                            @endforeach
                                                        </select>
                                                        @error('installment_number')<div class="invalid-feedback">{{ $message }}</div>@enderror
                                                    </div>

                                                    {{-- Is Final --}}
                                                    <div class="col-12 col-md-6 col-lg-4 mb-1"> {{-- responsive: spans 12/6/4 cols --}}
                                                        <label class="form-label d-block">{{ __('Is final installment?') }}</label>

                                                        {{-- Ensure a value is always posted (0 if unchecked) --}}
                                                        <input type="hidden" name="is_final" value="0">

                                                        <div class="form-check form-switch">
                                                            <input
                                                                class="form-check-input @error('is_final') is-invalid @enderror"
                                                                type="checkbox"
                                                                id="is_final"
                                                                name="is_final"
                                                                value="1"
                                                                @checked(old('is_final', $defaultIsFinal ?? false))
                                                                role="switch"
                                                                aria-describedby="is_final_help"
                                                            >

                                                            @error('is_final')<div class="invalid-feedback d-block">{{ $message }}</div>@enderror
                                                        </div>

                                                    </div>

                                                </div>

                                                <div class="mt-2 d-flex gap-1 flex-wrap">
                                                    <button type="submit" class="btn btn-primary">
                                                        {{ __('Save') }}
                                                    </button>
                                                </div>
                                            </form>
                                        </div> {{-- card-body --}}
                                    </div>
                                </div>
                            </div>
                        </div>
                    </section>
                </section>

            </div>
        </div>
    </div>
@endsection

@section('script')
    @stack('datatableScripts')
    <script>
        // check if select has only 1 and it's 3
        // when loaded
        document.addEventListener('DOMContentLoaded', function() {
            let installmentSelect = document.querySelector('.installment-number');
            if (installmentSelect && installmentSelect.options.length === 1 && installmentSelect.value == 3) {
                document.getElementById('is_final').checked = true;
                document.getElementById('is_final').disabled = true; // disable the checkbox
                // hidden minimum amount field
                document.getElementById('min-amount').style.display = 'none';
            }
        });
        document.querySelector('.installment-number').addEventListener('change', function() {
            let selectedValue = this.value;
            if (selectedValue == 3) {
                document.getElementById('is_final').checked = true;
                document.getElementById('is_final').disabled = true;
                // hidden minimum amount field
                document.getElementById('min-amount').style.display = 'none';
            }else{
                document.getElementById('is_final').checked = false;
                document.getElementById('is_final').disabled = false; // enable the checkbox
                // show minimum amount field
                document.getElementById('min-amount').style.display = 'block';
            }
        });
        // check if is_final checked display none min-amount else show it
        document.getElementById('is_final').addEventListener('change', function() {
            if (this.checked) {
                document.getElementById('min-amount').style.display = 'none';
                // clear value of input
                document.querySelector('input[name="minimum_amount"]').value = '';
            } else {
                document.getElementById('min-amount').style.display = 'block';
            }
        });
    </script>
@endsection