import { Head, Link, router, useForm } from '@inertiajs/react';
import { useState } from 'react';
import { ConfirmDialog } from '@/components/admin/confirm-dialog';
import { Button } from '@/components/ui/button';
import { Input } from '@/components/ui/input';
import { Label } from '@/components/ui/label';
import { Textarea } from '@/components/ui/textarea';

interface Initiative {
    id: number;
    title: string;
    summary: string | null;
    body: string | null;
    cover_url: string | null;
    url: string | null;
    sort_order: number;
}

export default function ResearchInitiativeEdit({ initiative }: { initiative: Initiative }) {
    const [confirmDelete, setConfirmDelete] = useState(false);

    const { data, setData, put, processing, errors } = useForm({
        title:      initiative.title,
        summary:    initiative.summary ?? '',
        body:       initiative.body ?? '',
        cover_url:  initiative.cover_url ?? '',
        url:        initiative.url ?? '',
        sort_order: initiative.sort_order.toString(),
    });

    function submit(e: React.FormEvent) {
        e.preventDefault();
        put(`/admin/research-initiatives/${initiative.id}`);
    }

    return (
        <>
            <Head title={`Edit — ${initiative.title}`} />
            <form onSubmit={submit} className="space-y-0">
                <div className="sticky top-16 z-10 -mx-6 mb-6 flex items-center justify-between border-b bg-background px-6 pb-4 pt-2 lg:-mx-8 lg:px-8">
                    <div>
                        <div className="flex items-center gap-2 text-sm text-muted-foreground">
                            <Link href="/admin/research-initiatives">Research Spin-offs</Link>
                            <span>/</span>
                            <span className="text-foreground truncate max-w-[220px]">{initiative.title}</span>
                        </div>
                        <h1 className="text-2xl font-bold">Edit Initiative</h1>
                    </div>
                    <div className="flex items-center gap-3">
                        <Button type="button" variant="outline" asChild><Link href="/admin/research-initiatives">Cancel</Link></Button>
                        <Button type="button" variant="destructive" onClick={() => setConfirmDelete(true)}>Delete</Button>
                        <Button type="submit" disabled={processing}>{processing ? 'Saving…' : 'Save Changes'}</Button>
                    </div>
                </div>

                <div className="grid grid-cols-1 gap-6 lg:grid-cols-[1fr_300px]">
                    <div className="space-y-6">
                        <div className="rounded-xl border border-border bg-card p-6 space-y-4">
                            <div className="space-y-1.5">
                                <Label htmlFor="title">Title *</Label>
                                <Input id="title" value={data.title} onChange={(e) => setData('title', e.target.value)} required />
                                {errors.title && <p className="text-xs text-destructive">{errors.title}</p>}
                            </div>
                            <div className="space-y-1.5">
                                <Label htmlFor="summary">Summary</Label>
                                <Textarea id="summary" value={data.summary} onChange={(e) => setData('summary', e.target.value)} rows={3} />
                            </div>
                            <div className="space-y-1.5">
                                <Label htmlFor="body">Full Description</Label>
                                <Textarea id="body" value={data.body} onChange={(e) => setData('body', e.target.value)} rows={6} />
                            </div>
                        </div>
                    </div>

                    <div className="space-y-6">
                        <div className="rounded-xl border border-border bg-card p-6 space-y-4">
                            <div className="space-y-1.5">
                                <Label htmlFor="url">Website URL</Label>
                                <Input id="url" type="url" value={data.url} onChange={(e) => setData('url', e.target.value)} placeholder="https://…" />
                                <p className="text-xs text-muted-foreground">Opens in a new tab on the public site.</p>
                                {errors.url && <p className="text-xs text-destructive">{errors.url}</p>}
                            </div>
                            <div className="space-y-1.5">
                                <Label htmlFor="cover_url">Cover Image Path</Label>
                                <Input id="cover_url" value={data.cover_url} onChange={(e) => setData('cover_url', e.target.value)} placeholder="/images/…" />
                            </div>
                            <div className="space-y-1.5">
                                <Label htmlFor="sort_order">Sort Order</Label>
                                <Input id="sort_order" type="number" value={data.sort_order} onChange={(e) => setData('sort_order', e.target.value)} />
                            </div>
                        </div>
                    </div>
                </div>
            </form>

            <ConfirmDialog
                open={confirmDelete}
                onOpenChange={setConfirmDelete}
                title="Delete initiative?"
                description="This is permanent and cannot be undone."
                confirmLabel="Delete"
                variant="danger"
                onConfirm={() => router.delete(`/admin/research-initiatives/${initiative.id}`)}
            />
        </>
    );
}
