@extends('layouts.app')

@php
use Illuminate\Support\Facades\Auth;
@endphp

@section('content')
<div class="container mx-auto px-4 py-6">
    <div class="flex items-center mb-6">
        <a href="{{ route('gas-types.index') }}" class="text-gray-500 hover:text-gray-700 mr-2">
            <i class="fas fa-arrow-left"></i>
        </a>
        <h1 class="text-2xl font-semibold text-gray-800">Edit Gas Type: {{ $gasType->name }}</h1>
    </div>

    <div class="bg-white rounded-lg shadow overflow-hidden">
        <form action="{{ route('gas-types.update', $gasType) }}" method="POST" enctype="multipart/form-data" class="p-6">
            @csrf
            @method('PUT')
            
            <div class="grid grid-cols-1 md:grid-cols-2 gap-6">
                <div>
                    <div class="mb-4">
                        <label for="name" class="block text-sm font-medium text-gray-700 mb-1">Name <span class="text-red-600">*</span></label>
                        <input type="text" name="name" id="name" value="{{ old('name', $gasType->name) }}" class="mt-1 focus:ring-primary-500 focus:border-primary-500 block w-full shadow-sm sm:text-sm border-gray-300 rounded-md" required>
                        @error('name')
                            <p class="text-red-500 text-xs mt-1">{{ $message }}</p>
                        @enderror
                    </div>

                    <div class="mb-4">
                        <label for="description" class="block text-sm font-medium text-gray-700 mb-1">Description</label>
                        <textarea name="description" id="description" rows="3" class="mt-1 focus:ring-primary-500 focus:border-primary-500 block w-full shadow-sm sm:text-sm border-gray-300 rounded-md">{{ old('description', $gasType->description) }}</textarea>
                        @error('description')
                            <p class="text-red-500 text-xs mt-1">{{ $message }}</p>
                        @enderror
                    </div>

                    <div class="mb-4">
                        <label for="price" class="block text-sm font-medium text-gray-700 mb-1">Price <span class="text-red-600">*</span></label>
                        <div class="mt-1 relative rounded-md shadow-sm">
                            <div class="absolute inset-y-0 left-0 pl-3 flex items-center pointer-events-none">
                                <span class="text-gray-500 sm:text-sm">$</span>
                            </div>
                            <input type="number" name="price" id="price" value="{{ old('price', $gasType->price) }}" step="0.01" min="0" class="focus:ring-primary-500 focus:border-primary-500 block w-full pl-7 pr-12 sm:text-sm border-gray-300 rounded-md" required>
                        </div>
                        @error('price')
                            <p class="text-red-500 text-xs mt-1">{{ $message }}</p>
                        @enderror
                    </div>

                    <div class="mb-4">
                        <label for="weight" class="block text-sm font-medium text-gray-700 mb-1">Weight (kg) <span class="text-red-600">*</span></label>
                        <input type="number" name="weight" id="weight" value="{{ old('weight', $gasType->weight) }}" step="0.01" min="0" class="mt-1 focus:ring-primary-500 focus:border-primary-500 block w-full shadow-sm sm:text-sm border-gray-300 rounded-md" required>
                        @error('weight')
                            <p class="text-red-500 text-xs mt-1">{{ $message }}</p>
                        @enderror
                    </div>

                    <div class="mb-4">
                        <label for="cylinder_size" class="block text-sm font-medium text-gray-700 mb-1">Cylinder Size</label>
                        <input type="text" name="cylinder_size" id="cylinder_size" value="{{ old('cylinder_size', $gasType->cylinder_size) }}" class="mt-1 focus:ring-primary-500 focus:border-primary-500 block w-full shadow-sm sm:text-sm border-gray-300 rounded-md">
                        @error('cylinder_size')
                            <p class="text-red-500 text-xs mt-1">{{ $message }}</p>
                        @enderror
                    </div>
                </div>

                <div>
                    <div class="mb-4">
                        <label for="stock_quantity" class="block text-sm font-medium text-gray-700 mb-1">Stock Quantity</label>
                        <input type="number" name="stock_quantity" id="stock_quantity" value="{{ old('stock_quantity', $gasType->stock_quantity) }}" min="0" class="mt-1 focus:ring-primary-500 focus:border-primary-500 block w-full shadow-sm sm:text-sm border-gray-300 rounded-md">
                        @error('stock_quantity')
                            <p class="text-red-500 text-xs mt-1">{{ $message }}</p>
                        @enderror
                    </div>

                    <div class="mb-4">
                        <div class="flex items-center">
                            <input type="checkbox" name="is_available" id="is_available" class="h-4 w-4 text-primary-600 focus:ring-primary-500 border-gray-300 rounded" {{ old('is_available', $gasType->is_available) ? 'checked' : '' }}>
                            <label for="is_available" class="ml-2 block text-sm text-gray-700">Available for purchase</label>
                        </div>
                        @error('is_available')
                            <p class="text-red-500 text-xs mt-1">{{ $message }}</p>
                        @enderror
                    </div>

                    @if(Auth::user()->role === 'super_admin')
                    <div class="mb-4">
                        <label for="gas_company_id" class="block text-sm font-medium text-gray-700 mb-1">Gas Company <span class="text-red-600">*</span></label>
                        <select name="gas_company_id" id="gas_company_id" class="mt-1 block w-full py-2 px-3 border border-gray-300 bg-white rounded-md shadow-sm focus:outline-none focus:ring-primary-500 focus:border-primary-500 sm:text-sm" required>
                            <option value="">Select a company</option>
                            @foreach($gasCompanies as $company)
                                <option value="{{ $company->id }}" {{ old('gas_company_id', $gasType->gas_company_id) == $company->id ? 'selected' : '' }}>
                                    {{ $company->name }}
                                </option>
                            @endforeach
                        </select>
                        @error('gas_company_id')
                            <p class="text-red-500 text-xs mt-1">{{ $message }}</p>
                        @enderror
                    </div>
                    @endif

                    <div class="mb-4">
                        <label for="image" class="block text-sm font-medium text-gray-700 mb-1">Gas Type Image</label>
                        <div class="mt-1 flex items-center">
                            <div id="image-preview" class="h-32 w-32 rounded-md bg-gray-100 flex items-center justify-center text-gray-400 mb-2 {{ $gasType->image_path ? '' : 'hidden' }}">
                                <img id="preview" src="{{ $gasType->image_path ? asset('storage/' . $gasType->image_path) : '#' }}" alt="Preview" class="h-full w-full object-cover rounded-md">
                            </div>
                            <div id="no-image" class="h-32 w-32 rounded-md bg-gray-100 flex items-center justify-center text-gray-400 mb-2 {{ $gasType->image_path ? 'hidden' : '' }}">
                                <i class="fas fa-image text-3xl"></i>
                            </div>
                        </div>
                        <input type="file" name="image" id="image" accept="image/*" class="mt-1 block w-full text-sm text-gray-500
                            file:mr-4 file:py-2 file:px-4
                            file:rounded-md file:border-0
                            file:text-sm file:font-semibold
                            file:bg-primary-50 file:text-primary-700
                            hover:file:bg-primary-100">
                        <p class="text-xs text-gray-500 mt-1">Max file size: 2MB. Recommended dimensions: 500x500px.</p>
                        @if($gasType->image_path)
                        <p class="text-xs text-gray-500 mt-1">Leave empty to keep the current image.</p>
                        @endif
                        @error('image')
                            <p class="text-red-500 text-xs mt-1">{{ $message }}</p>
                        @enderror
                    </div>
                </div>
            </div>

            <div class="mt-6 flex items-center justify-end">
                <a href="{{ route('gas-types.index') }}" class="bg-white py-2 px-4 border border-gray-300 rounded-md shadow-sm text-sm font-medium text-gray-700 hover:bg-gray-50 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-primary-500 mr-3">
                    Cancel
                </a>
                <button type="submit" class="bg-primary-600 hover:bg-primary-700 text-white font-medium py-2 px-4 rounded-md">
                    Update Gas Type
                </button>
            </div>
        </form>
    </div>
</div>

<script>
    document.addEventListener('DOMContentLoaded', function() {
        const imageInput = document.getElementById('image');
        const imagePreview = document.getElementById('image-preview');
        const preview = document.getElementById('preview');
        const noImage = document.getElementById('no-image');
        
        imageInput.addEventListener('change', function() {
            if (this.files && this.files[0]) {
                const reader = new FileReader();
                
                reader.onload = function(e) {
                    preview.src = e.target.result;
                    imagePreview.classList.remove('hidden');
                    noImage.classList.add('hidden');
                }
                
                reader.readAsDataURL(this.files[0]);
            } else {
                // If there's an existing image, don't hide the preview
                if (!preview.src.endsWith('#')) {
                    return;
                }
                
                imagePreview.classList.add('hidden');
                noImage.classList.remove('hidden');
            }
        });
    });
</script>
@endsection