{% load static %}

<div x-data="photoManager({
    photos: [
        {% for photo in photos %}
            {
                id: {{ photo.id }},
                url: '{{ photo.image.url }}',
                caption: '{{ photo.caption|default:""|escapejs }}',
                is_primary: {{ photo.is_primary|yesno:"true,false" }}
            }{% if not forloop.last %},{% endif %}
        {% endfor %}
    ],
    contentType: '{{ content_type }}',
    objectId: {{ object_id }},
    csrfToken: '{{ csrf_token }}',
    uploadUrl: '{% url "photos:upload" %}'
})" class="w-full">
    <div class="relative space-y-6">
        <!-- Upload Section -->
        <div class="flex items-center justify-between">
            <h3 class="text-xl font-semibold text-gray-900 dark:text-white">Photos</h3>
            <label class="cursor-pointer btn-secondary">
                <i class="mr-2 fas fa-camera"></i>
                <span>Upload Photo</span>
                <input type="file" 
                       class="hidden" 
                       accept="image/*" 
                       @change="handleFileSelect"
                       multiple>
            </label>
        </div>

        <!-- Success Message -->
        <div x-show="showSuccess" 
             x-transition:enter="transition ease-out duration-300"
             x-transition:enter-start="opacity-0 transform -translate-y-2"
             x-transition:enter-end="opacity-100 transform translate-y-0"
             x-transition:leave="transition ease-in duration-200"
             x-transition:leave-start="opacity-100 transform translate-y-0"
             x-transition:leave-end="opacity-0 transform -translate-y-2"
             class="p-4 text-sm text-green-800 bg-green-100 rounded-lg dark:bg-green-200 dark:text-green-900">
            Photo uploaded successfully!
        </div>

        <!-- Upload Progress -->
        <template x-if="uploading">
            <div class="p-4 bg-white rounded-lg shadow-lg dark:bg-gray-800">
                <div class="flex items-center justify-between mb-1">
                    <span class="text-sm text-gray-700 dark:text-gray-300">Uploading...</span>
                    <span class="text-sm text-gray-700 dark:text-gray-300" x-text="uploadProgress + '%'"></span>
                </div>
                <div class="w-full h-2 bg-gray-200 rounded-full dark:bg-gray-700">
                    <div class="h-2 transition-all duration-300 bg-blue-600 rounded-full"
                         :style="'width: ' + uploadProgress + '%'"></div>
                </div>
            </div>
        </template>

        <!-- Error Message -->
        <template x-if="error">
            <div class="p-4 text-sm text-red-800 bg-red-100 rounded-lg dark:bg-red-200 dark:text-red-900" 
                 x-text="error"></div>
        </template>

        <!-- Photo Grid -->
        <div class="grid gap-6 sm:grid-cols-2 lg:grid-cols-3">
            <template x-for="photo in photos" :key="photo.id">
                <div class="relative p-4 rounded-lg bg-gray-50 dark:bg-gray-700/50">
                    <!-- Photo -->
                    <div class="relative aspect-w-16 aspect-h-9 group">
                        <img :src="photo.url" 
                             :alt="photo.caption || ''"
                             class="object-cover rounded-lg">
                    </div>

                    <!-- Caption -->
                    <div class="mt-4 space-y-2">
                        <label class="block text-sm font-medium text-gray-700 dark:text-gray-300">Caption</label>
                        <textarea x-model="photo.caption"
                                @change="updateCaption(photo)"
                                class="w-full text-sm border-gray-300 rounded-lg form-textarea dark:border-gray-600 dark:bg-gray-700 dark:text-white"
                                rows="2"></textarea>
                    </div>

                    <!-- Actions -->
                    <div class="flex items-center justify-between mt-4">
                        <button @click="togglePrimary(photo)"
                                :class="{
                                    'text-yellow-600 dark:text-yellow-400': photo.is_primary,
                                    'text-gray-400 dark:text-gray-500': !photo.is_primary
                                }"
                                class="flex items-center gap-2 px-3 py-1 text-sm font-medium rounded-lg hover:bg-gray-100 dark:hover:bg-gray-600">
                            <i class="fas" :class="photo.is_primary ? 'fa-star' : 'fa-star-o'"></i>
                            <span x-text="photo.is_primary ? 'Featured' : 'Set as Featured'"></span>
                        </button>

                        <button @click="deletePhoto(photo)"
                                class="flex items-center gap-2 px-3 py-1 text-sm font-medium text-red-600 rounded-lg dark:text-red-400 hover:bg-red-50 dark:hover:bg-red-900/20">
                            <i class="fas fa-trash"></i>
                            <span>Delete</span>
                        </button>
                    </div>
                </div>
            </template>
        </div>

        <!-- No Photos Message -->
        <template x-if="photos.length === 0">
            <div class="flex flex-col items-center justify-center py-12 text-center">
                <i class="mb-4 text-4xl text-gray-400 fas fa-camera dark:text-gray-600"></i>
                <p class="mb-4 text-gray-500 dark:text-gray-400">No photos available yet.</p>
                <p class="text-sm text-gray-400 dark:text-gray-500">Click the upload button to add photos!</p>
            </div>
        </template>
    </div>
</div>

<!-- AlpineJS Component Script -->
<script>
document.addEventListener('alpine:init', () => {
    Alpine.data('photoManager', ({ photos, contentType, objectId, csrfToken, uploadUrl }) => ({
        photos,
        uploading: false,
        uploadProgress: 0,
        error: null,
        showSuccess: false,

        async handleFileSelect(event) {
            const files = Array.from(event.target.files);
            if (!files.length) return;

            this.uploading = true;
            this.uploadProgress = 0;
            this.error = null;
            this.showSuccess = false;

            const totalFiles = files.length;
            let completedFiles = 0;

            for (const file of files) {
                const formData = new FormData();
                formData.append('image', file);
                formData.append('app_label', contentType.split('.')[0]);
                formData.append('model', contentType.split('.')[1]);
                formData.append('object_id', objectId);

                try {
                    const response = await fetch(uploadUrl, {
                        method: 'POST',
                        headers: {
                            'X-CSRFToken': csrfToken,
                        },
                        body: formData
                    });

                    if (!response.ok) {
                        const data = await response.json();
                        throw new Error(data.error || 'Upload failed');
                    }

                    const photo = await response.json();
                    this.photos.push(photo);
                    completedFiles++;
                    this.uploadProgress = (completedFiles / totalFiles) * 100;
                } catch (err) {
                    this.error = err.message || 'Failed to upload photo. Please try again.';
                    console.error('Upload error:', err);
                    break;
                }
            }

            this.uploading = false;
            event.target.value = ''; // Reset file input

            if (!this.error) {
                this.showSuccess = true;
                setTimeout(() => {
                    this.showSuccess = false;
                }, 3000);
            }
        },

        async updateCaption(photo) {
            try {
                const response = await fetch(`${uploadUrl}${photo.id}/caption/`, {
                    method: 'POST',
                    headers: {
                        'X-CSRFToken': csrfToken,
                        'Content-Type': 'application/json',
                    },
                    body: JSON.stringify({
                        caption: photo.caption
                    })
                });

                if (!response.ok) {
                    throw new Error('Failed to update caption');
                }
            } catch (err) {
                this.error = err.message || 'Failed to update caption';
                console.error('Caption update error:', err);
            }
        },

        async togglePrimary(photo) {
            try {
                const response = await fetch(`${uploadUrl}${photo.id}/primary/`, {
                    method: 'POST',
                    headers: {
                        'X-CSRFToken': csrfToken,
                        'Content-Type': 'application/json',
                    }
                });

                if (!response.ok) {
                    throw new Error('Failed to update primary photo');
                }

                // Update local state
                this.photos = this.photos.map(p => ({
                    ...p,
                    is_primary: p.id === photo.id
                }));
            } catch (err) {
                this.error = err.message || 'Failed to update primary photo';
                console.error('Primary photo update error:', err);
            }
        },

        async deletePhoto(photo) {
            if (!confirm('Are you sure you want to delete this photo?')) {
                return;
            }

            try {
                const response = await fetch(`${uploadUrl}${photo.id}/`, {
                    method: 'DELETE',
                    headers: {
                        'X-CSRFToken': csrfToken,
                    }
                });

                if (!response.ok) {
                    throw new Error('Failed to delete photo');
                }

                // Update local state
                this.photos = this.photos.filter(p => p.id !== photo.id);
            } catch (err) {
                this.error = err.message || 'Failed to delete photo';
                console.error('Delete error:', err);
            }
        }
    }));
});
</script>
