'use client';

import { useEffect, useState } from 'react';
import QRCode from 'qrcode';
import { pb } from '~/lib/pocketbase';
import { ImageOff } from 'lucide-react';

export default function Dashboard() {
    const [name, setName] = useState('');
    const [glbUrl, setGlbUrl] = useState('');
    const [usdzUrl, setUsdzUrl] = useState('');
    const [assets, setAssets] = useState<any[]>([]);
    const [loading, setLoading] = useState(false);

    const fetchAssets = async () => {
        try {
            const records = await pb.collection('ar_assets').getFullList({
                sort: '-created',
            });
            setAssets(records);
        } catch (err) {
            console.error('Failed to fetch assets:', err);
            setAssets([]);
        }
    };

    useEffect(() => {
        fetchAssets();
    }, []);

    const createAsset = async () => {
        if (!name || !glbUrl) {
            alert('Please provide a name and a GLB URL');
            return;
        }

        setLoading(true);

        try {
            const record = await pb.collection('ar_assets').create({
                name,
                glb_url: glbUrl,
                usdz_url: usdzUrl || '',
            });

            const qrUrl = `${import.meta.env.VITE_FRONTEND_URL}/ar/${record.id}`;

            const qrImage = await QRCode.toDataURL(qrUrl, {
                width: 512,
                margin: 2,
            });

            const qrBlob = await (await fetch(qrImage)).blob();

            const qrFormData = new FormData();
            qrFormData.append('qr_url', qrUrl);
            qrFormData.append('qr_image', new File([qrBlob], `${record.id}.png`, { type: 'image/png' }));

            await pb.collection('ar_assets').update(record.id, qrFormData);

            setName('');
            setGlbUrl('');
            setUsdzUrl('');

            fetchAssets();
        } catch (err: any) {
            alert(err?.message || 'Failed to create asset');
        } finally {
            setLoading(false);
        }
    };

    return (
        <div className='min-h-screen bg-gray-50 px-6 py-10'>
            <div className='mx-auto max-w-5xl space-y-10'>
                <div>
                    <h1 className='text-3xl font-bold text-gray-900'>
                        AR Asset Dashboard
                    </h1>
                    <p className='mt-1 text-gray-500'>
                        Manage 3D assets and generate AR QR codes
                    </p>
                </div>

                <div className='rounded-2xl bg-white p-6 shadow-sm'>
                    <h2 className='mb-4 text-lg font-semibold text-gray-800'>
                        Create New Asset
                    </h2>

                    <div className='grid gap-4 md:grid-cols-3 text-black'>
                        <div className="space-y-1">
                            <label className="text-xs font-semibold text-gray-600 ml-1">Asset Name</label>
                            <input
                                className='w-full rounded-lg border border-gray-300 px-4 py-2 text-sm focus:border-black focus:outline-none'
                                placeholder='Asset name'
                                value={name}
                                onChange={(e) => setName(e.target.value)}
                            />
                        </div>
                        <div className="space-y-1">
                            <label className="text-xs font-semibold text-gray-600 ml-1">GLB URL (Android/Web)</label>
                            <input
                                type="url"
                                className='w-full rounded-lg border border-gray-300 px-4 py-2 text-sm focus:border-black focus:outline-none'
                                placeholder='https://example.com/model.glb'
                                value={glbUrl}
                                onChange={(e) => setGlbUrl(e.target.value)}
                            />
                        </div>
                        <div className="space-y-1">
                            <label className="text-xs font-semibold text-gray-600 ml-1">USDZ URL (iOS) - Optional</label>
                            <input
                                type="url"
                                className='w-full rounded-lg border border-gray-300 px-4 py-2 text-sm focus:border-black focus:outline-none'
                                placeholder='USDZ URL'
                                value={usdzUrl}
                                onChange={(e) => setUsdzUrl(e.target.value)}
                            />
                        </div>
                    </div>

                    <button
                        onClick={createAsset}
                        disabled={loading}
                        className='mt-6 inline-flex items-center justify-center rounded-xl bg-black px-6 py-2.5 text-sm font-medium text-white transition hover:bg-gray-800 disabled:cursor-not-allowed disabled:opacity-60'
                    >
                        {loading ? 'Creating…' : 'Create Asset'}
                    </button>
                </div>

                <div>
                    <h2 className='mb-4 text-lg font-semibold text-gray-800'>
                        Generated Assets
                    </h2>

                    {assets.length === 0 ? (
                        <p className='text-sm text-gray-500'>
                            No assets created yet.
                        </p>
                    ) : (
                        <div className='grid grid-cols-1 gap-6 sm:grid-cols-2 md:grid-cols-3'>
                            {assets.map((asset) => (
                                <div
                                    key={asset.id}
                                    className='rounded-2xl bg-white p-5 shadow-sm transition hover:shadow-md'
                                >
                                    <h3 className='mb-3 text-base font-semibold text-gray-900'>
                                        {asset?.name}
                                    </h3>

                                    {asset?.qr_image ? (
                                        <img
                                            src={pb.files.getURL(asset, asset.qr_image)}
                                            alt={asset?.name}
                                            className='mx-auto w-40 rounded-lg'
                                        />
                                    ) : (
                                        <div className='mx-auto flex h-40 w-40 flex-col items-center justify-center space-y-2 rounded-lg bg-gray-50 text-gray-400'>
                                            <ImageOff size={32} strokeWidth={1.5} />
                                            <span className='text-xs font-medium'>No QR Image</span>
                                        </div>
                                    )}
                                </div>
                            ))}
                        </div>
                    )}
                </div>
            </div>
        </div>
    );
}