import { useForm } from '@inertiajs/react';
import { useEffect  } from 'react';
import type {FormEvent} from 'react';
import DepartmentController from '@/actions/App/Http/Controllers/Admin/DepartmentController';
import InputError from '@/components/input-error';
import { Button } from '@/components/ui/button';
import { Checkbox } from '@/components/ui/checkbox';
import {
    Dialog,
    DialogContent,
    DialogDescription,
    DialogFooter,
    DialogHeader,
    DialogTitle,
} from '@/components/ui/dialog';
import { Input } from '@/components/ui/input';
import { Label } from '@/components/ui/label';
import {
    Select,
    SelectContent,
    SelectItem,
    SelectTrigger,
    SelectValue,
} from '@/components/ui/select';

export type DepartmentFormValues = {
    id: number;
    code: string;
    name: string;
    is_active: boolean;
    parent_id?: number | null;
    manager_id?: number | null;
};

type Props = {
    open: boolean;
    onOpenChange: (open: boolean) => void;
    department?: DepartmentFormValues | null;
    parentOptions?: { id: number; name: string }[];
    managerOptions?: { id: number; name: string }[];
};

export function DepartmentFormModal({
    open,
    onOpenChange,
    department = null,
    parentOptions = [],
    managerOptions = [],
}: Props) {
    const isEditing = department !== null;

    const form = useForm({
        name: '',
        is_active: true,
        parent_id: null as number | null,
        manager_id: null as number | null,
    });

    useEffect(() => {
        if (!open) {
            return;
        }

        form.setData({
            name: department?.name ?? '',
            is_active: department?.is_active ?? true,
            parent_id: department?.parent_id ?? null,
            manager_id: department?.manager_id ?? null,
        });
        form.clearErrors();
        // eslint-disable-next-line react-hooks/exhaustive-deps
    }, [open, department]);

    function submit(event: FormEvent) {
        event.preventDefault();

        const options = {
            preserveScroll: true,
            onSuccess: () => onOpenChange(false),
        };

        if (isEditing && department) {
            form.put(DepartmentController.update.url(department.id), options);

            return;
        }

        form.post(DepartmentController.store.url(), options);
    }

    return (
        <Dialog open={open} onOpenChange={onOpenChange}>
            <DialogContent>
                <DialogHeader>
                    <DialogTitle>
                        {isEditing
                            ? 'Modifier le département'
                            : 'Nouveau département'}
                    </DialogTitle>
                    <DialogDescription>
                        {isEditing
                            ? 'Mettre à jour le libellé du service.'
                            : 'Le code sera généré automatiquement (ex. DEP-001).'}
                    </DialogDescription>
                </DialogHeader>

                <form onSubmit={submit} className="space-y-4">
                    {isEditing && department && (
                        <div className="grid gap-2">
                            <Label>Code</Label>
                            <Input
                                value={department.code}
                                disabled
                                readOnly
                                className="font-mono"
                            />
                        </div>
                    )}

                    <div className="grid gap-2">
                        <Label htmlFor="name">Nom</Label>
                        <Input
                            id="name"
                            value={form.data.name}
                            onChange={(e) =>
                                form.setData('name', e.target.value)
                            }
                            autoFocus
                        />
                        <InputError message={form.errors.name} />
                    </div>

                    <div className="grid gap-2">
                        <Label htmlFor="parent_id">Département parent (optionnel)</Label>
                        <Select
                            value={form.data.parent_id ? String(form.data.parent_id) : '0'}
                            onValueChange={(value) =>
                                form.setData('parent_id', value === '0' ? null : Number(value))
                            }
                        >
                            <SelectTrigger id="parent_id">
                                <SelectValue placeholder="Aucun parent" />
                            </SelectTrigger>
                            <SelectContent>
                                <SelectItem value="0">Aucun parent</SelectItem>
                                {parentOptions
                                    .filter((p) => !isEditing || p.id !== department?.id)
                                    .map((option) => (
                                        <SelectItem key={option.id} value={String(option.id)}>
                                            {option.name}
                                        </SelectItem>
                                    ))}
                            </SelectContent>
                        </Select>
                        <InputError message={form.errors.parent_id} />
                    </div>

                    <div className="grid gap-2">
                        <Label htmlFor="manager_id">Manager / Chef de service (optionnel)</Label>
                        <Select
                            value={form.data.manager_id ? String(form.data.manager_id) : '0'}
                            onValueChange={(value) =>
                                form.setData('manager_id', value === '0' ? null : Number(value))
                            }
                        >
                            <SelectTrigger id="manager_id">
                                <SelectValue placeholder="Aucun manager" />
                            </SelectTrigger>
                            <SelectContent>
                                <SelectItem value="0">Aucun manager</SelectItem>
                                {managerOptions.map((option) => (
                                    <SelectItem key={option.id} value={String(option.id)}>
                                        {option.name}
                                    </SelectItem>
                                ))}
                            </SelectContent>
                        </Select>
                        <InputError message={form.errors.manager_id} />
                    </div>

                    <label className="flex items-center gap-2">
                        <Checkbox
                            checked={form.data.is_active}
                            onCheckedChange={(checked) =>
                                form.setData('is_active', checked === true)
                            }
                        />
                        <span className="text-sm">Département actif</span>
                    </label>

                    <DialogFooter>
                        <Button
                            type="button"
                            variant="outline"
                            onClick={() => onOpenChange(false)}
                        >
                            Annuler
                        </Button>
                        <Button type="submit" disabled={form.processing}>
                            {isEditing ? 'Enregistrer' : 'Créer'}
                        </Button>
                    </DialogFooter>
                </form>
            </DialogContent>
        </Dialog>
    );
}