@extends('layouts.app')

@section('title', 'Upload Document - Application #' . $application->application_number)

@section('content')
<div class="container-fluid">
    <div class="row justify-content-center">
        <div class="col-md-8">
            <!-- Header -->
            <div class="d-flex justify-content-between align-items-center mb-4">
                <div>
                    <h4>Upload Document</h4>
                    <p class="text-muted mb-0">
                        Application #{{ $application->application_number }}
                    </p>
                </div>
                <a href="{{ route('applicant.documents.index', $application) }}" class="btn btn-outline-secondary">
                    <i class="fas fa-arrow-left"></i> Back to Documents
                </a>
            </div>

            <!-- Form -->
            <div class="card">
                <div class="card-header">
                    <h6 class="mb-0">Document Upload</h6>
                </div>
                <div class="card-body">
                    <form method="POST" action="{{ route('applicant.documents.store', $application) }}" enctype="multipart/form-data">
                        @csrf
                        
                        <div class="form-group">
                            <label for="document_type" class="required">Document Type</label>
                            <select class="form-control @error('document_type') is-invalid @enderror" 
                                    id="document_type" 
                                    name="document_type" 
                                    required>
                                <option value="">Select Document Type</option>
                                @foreach($documentTypes as $key => $name)
                                    <option value="{{ $key }}" 
                                            {{ old('document_type', request('type')) == $key ? 'selected' : '' }}
                                            {{ in_array($key, $requiredDocuments) ? 'data-required="true"' : '' }}>
                                        {{ $name }} {{ in_array($key, $requiredDocuments) ? '(Required)' : '' }}
                                    </option>
                                @endforeach
                            </select>
                            @error('document_type')
                                <div class="invalid-feedback">{{ $message }}</div>
                            @enderror
                        </div>

                        <div class="form-group">
                            <label for="document_name" class="required">Document Name/Description</label>
                            <input type="text" 
                                   class="form-control @error('document_name') is-invalid @enderror" 
                                   id="document_name" 
                                   name="document_name" 
                                   value="{{ old('document_name') }}" 
                                   placeholder="e.g., Bachelor's Degree Certificate - Computer Science"
                                   required>
                            @error('document_name')
                                <div class="invalid-feedback">{{ $message }}</div>
                            @enderror
                        </div>

                        <div class="form-group">
                            <label for="file" class="required">Select File</label>
                            <div class="custom-file">
                                <input type="file" 
                                       class="custom-file-input @error('file') is-invalid @enderror" 
                                       id="file" 
                                       name="file" 
                                       accept=".pdf,.jpg,.jpeg,.png,.doc,.docx"
                                       required>
                                <label class="custom-file-label" for="file">Choose file...</label>
                                @error('file')
                                    <div class="invalid-feedback">{{ $message }}</div>
                                @enderror
                            </div>
                            <small class="form-text text-muted">
                                Supported formats: PDF, JPG, PNG, DOC, DOCX. Maximum size: 5MB
                            </small>
                        </div>

                        <!-- File Preview Area -->
                        <div id="filePreview" class="form-group" style="display: none;">
                            <label>File Preview</label>
                            <div class="border rounded p-3">
                                <div id="previewContent"></div>
                            </div>
                        </div>

                        <div class="form-group">
                            <div class="alert alert-info">
                                <i class="fas fa-info-circle"></i>
                                <strong>Upload Guidelines:</strong>
                                <ul class="mb-0 mt-2">
                                    <li>Ensure documents are clear and readable</li>
                                    <li>All text should be legible</li>
                                    <li>For certificates, ensure all details are visible</li>
                                    <li>Photographs should be passport-size with clear face visibility</li>
                                </ul>
                            </div>
                        </div>

                        <div class="form-group mb-0">
                            <button type="submit" class="btn btn-primary" id="uploadBtn">
                                <i class="fas fa-upload"></i> Upload Document
                            </button>
                            <a href="{{ route('applicant.documents.index', $application) }}" class="btn btn-secondary">
                                Cancel
                            </a>
                        </div>
                    </form>
                </div>
            </div>
        </div>
    </div>
</div>
@endsection

@push('scripts')
<script>
$(document).ready(function() {
    // Update file label when file is selected
    $('.custom-file-input').on('change', function() {
        let fileName = $(this).val().split('\\').pop();
        $(this).siblings('.custom-file-label').addClass('selected').html(fileName);
        
        // Show file preview for images
        if (this.files && this.files[0]) {
            const file = this.files[0];
            const fileType = file.type;
            
            if (fileType.startsWith('image/')) {
                const reader = new FileReader();
                reader.onload = function(e) {
                    $('#previewContent').html(`
                        <img src="${e.target.result}" class="img-thumbnail" style="max-width: 300px; max-height: 200px;">
                        <p class="mt-2 mb-0"><strong>File:</strong> ${file.name}</p>
                        <p class="mb-0"><strong>Size:</strong> ${(file.size / 1024 / 1024).toFixed(2)} MB</p>
                    `);
                    $('#filePreview').show();
                };
                reader.readAsDataURL(file);
            } else {
                $('#previewContent').html(`
                    <div class="text-center">
                        <i class="fas fa-file fa-3x text-muted mb-2"></i>
                        <p class="mb-0"><strong>File:</strong> ${file.name}</p>
                        <p class="mb-0"><strong>Size:</strong> ${(file.size / 1024 / 1024).toFixed(2)} MB</p>
                        <p class="mb-0"><strong>Type:</strong> ${fileType}</p>
                    </div>
                `);
                $('#filePreview').show();
            }
        }
    });

    // Auto-fill document name based on type
    $('#document_type').on('change', function() {
        const selectedOption = $(this).find('option:selected');
        const documentName = selectedOption.text().replace(' (Required)', '');
        
        if (documentName && documentName !== 'Select Document Type') {
            $('#document_name').val(documentName);
        }
    });

    // Form submission with loading state
    $('form').on('submit', function() {
        $('#uploadBtn').prop('disabled', true).html('<i class="fas fa-spinner fa-spin"></i> Uploading...');
    });
});
</script>
@endpush