import { Head, useForm } from '@inertiajs/react';
import { FormEventHandler } from 'react';

import { Button } from '@/components/ui/button';
import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card';
import { Checkbox } from '@/components/ui/checkbox';
import { Input } from '@/components/ui/input';
import { Label } from '@/components/ui/label';
import { Select, SelectContent, SelectItem, SelectTrigger, SelectValue } from '@/components/ui/select';
import AdminLayout from '@/layouts/admin-layout';
import { type Coupon } from '@/types';

export default function AdminCouponEdit({ coupon }: { coupon: Coupon }) {
    const { data, setData, patch, processing } = useForm({
        code: coupon.code, type: coupon.type, value: coupon.value,
        min_order_amount: coupon.min_order_amount, max_discount: coupon.max_discount ?? '',
        usage_limit: String(coupon.usage_limit ?? ''), start_at: coupon.start_at ?? '', end_at: coupon.end_at ?? '',
        status: coupon.status,
    });

    const submit: FormEventHandler = (e) => {
        e.preventDefault();
        patch(route('admin.coupons.update', coupon.id));
    };

    return (
        <AdminLayout title={`Edit Coupon: ${coupon.code}`}>
            <Head title={`Edit ${coupon.code}`} />
            <form onSubmit={submit} className="max-w-xl space-y-4">
                <Card>
                    <CardHeader><CardTitle className="text-base">Coupon Details</CardTitle></CardHeader>
                    <CardContent className="space-y-4">
                        <div className="grid gap-4 sm:grid-cols-2">
                            <div className="space-y-1.5">
                                <Label>Code</Label>
                                <Input value={data.code} readOnly className="uppercase bg-slate-50 font-mono" />
                            </div>
                            <div className="space-y-1.5">
                                <Label>Type</Label>
                                <Select value={data.type} onValueChange={(v) => setData('type', v as 'fixed' | 'percent')}>
                                    <SelectTrigger aria-label="Coupon type"><SelectValue /></SelectTrigger>
                                    <SelectContent>
                                        <SelectItem value="fixed">Fixed (৳)</SelectItem>
                                        <SelectItem value="percent">Percent (%)</SelectItem>
                                    </SelectContent>
                                </Select>
                            </div>
                        </div>
                        <div className="grid gap-4 sm:grid-cols-2">
                            <div className="space-y-1.5">
                                <Label>Discount Value</Label>
                                <Input type="number" step="0.01" value={data.value} onChange={(e) => setData('value', e.target.value)} />
                            </div>
                            <div className="space-y-1.5">
                                <Label>Min Order Amount</Label>
                                <Input type="number" step="0.01" value={data.min_order_amount} onChange={(e) => setData('min_order_amount', e.target.value)} />
                            </div>
                            <div className="space-y-1.5">
                                <Label>End Date</Label>
                                <Input type="datetime-local" value={data.end_at} onChange={(e) => setData('end_at', e.target.value)} />
                            </div>
                            <div className="space-y-1.5">
                                <Label>Usage Limit</Label>
                                <Input type="number" value={data.usage_limit} onChange={(e) => setData('usage_limit', e.target.value)} placeholder="Unlimited" />
                            </div>
                        </div>
                        <div className="flex items-center gap-2">
                            <Checkbox id="status" checked={data.status} onCheckedChange={(v) => setData('status', Boolean(v))} />
                            <Label htmlFor="status">Active</Label>
                        </div>
                    </CardContent>
                </Card>
                <Button type="submit" disabled={processing} className="bg-indigo-600 hover:bg-indigo-700">
                    {processing ? 'Saving…' : 'Save Changes'}
                </Button>
            </form>
        </AdminLayout>
    );
}
