import { useEffect } from "react";
import {
    Dialog,
    DialogContent,
    DialogDescription,
    DialogFooter,
    DialogHeader,
    DialogTitle,
} from "@/Components/ui/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";
import { useForm } from "@inertiajs/react";
import { toast } from "sonner";
import type { Vendor } from "@/Pages/Vendor/Index";

interface VendorDialogProps {
    open: boolean;
    onOpenChange: (open: boolean) => void;
    vendor: Vendor | null;
}

export default function VendorDialog({
    open,
    onOpenChange,
    vendor,
}: VendorDialogProps) {
    const { data, setData, post, put, processing, errors, reset, clearErrors } = useForm({
        name: "",
        short_name: "",
        tax_id: "",
        owner: "",
        contact_name: "",
        tel: "",
        phone: "",
        email: "",
        address: "",
        remark: "",
    });

    useEffect(() => {
        if (open) {
            clearErrors();
            if (vendor) {
                setData({
                    name: vendor.name,
                    short_name: vendor.short_name || "",
                    tax_id: vendor.tax_id || "",
                    owner: vendor.owner || "",
                    contact_name: vendor.contact_name || "",
                    tel: vendor.tel || "",
                    phone: vendor.phone || "",
                    email: vendor.email || "",
                    address: vendor.address || "",
                    remark: vendor.remark || "",
                });
            } else {
                reset();
            }
        }
    }, [open, vendor]);

    const handleSubmit = (e: React.FormEvent) => {
        e.preventDefault();

        if (vendor) {
            put(route("vendors.update", vendor.id), {
                onSuccess: () => {
                    toast.success("廠商資料已更新");
                    onOpenChange(false);
                    reset();
                },
                onError: () => {
                    toast.error("更新失敗，請檢查輸入資料");
                }
            });
        } else {
            post(route("vendors.store"), {
                onSuccess: () => {
                    toast.success("廠商已新增");
                    onOpenChange(false);
                    reset();
                },
                onError: () => {
                    toast.error("新增失敗，請檢查輸入資料");
                }
            });
        }
    };

    return (
        <Dialog open={open} onOpenChange={onOpenChange}>
            <DialogContent className="max-w-3xl max-h-[90vh] overflow-y-auto">
                <DialogHeader>
                    <DialogTitle>{vendor ? "編輯廠商" : "新增廠商"}</DialogTitle>
                    <DialogDescription>
                        {vendor ? "修改廠商基本資料與聯絡資訊" : "建立新的廠商資料"}
                    </DialogDescription>
                </DialogHeader>

                <form onSubmit={handleSubmit} className="space-y-6 py-4">
                    {/* 基本資訊區塊 */}
                    <div className="space-y-4">
                        <h3 className="text-lg font-medium border-b pb-2 text-primary">基本資訊</h3>
                        <div className="grid grid-cols-1 md:grid-cols-2 gap-4">
                            <div className="space-y-2">
                                <Label htmlFor="name">
                                    廠商名稱 <span className="text-red-500">*</span>
                                </Label>
                                <Input
                                    id="name"
                                    value={data.name}
                                    onChange={(e) => setData("name", e.target.value)}
                                    placeholder="例：宏達食品有限公司"
                                    className={errors.name ? "border-red-500" : ""}
                                />
                                {errors.name && <p className="text-sm text-red-500">{errors.name}</p>}
                            </div>

                            <div className="space-y-2">
                                <Label htmlFor="short_name">廠商簡稱</Label>
                                <Input
                                    id="short_name"
                                    value={data.short_name}
                                    onChange={(e) => setData("short_name", e.target.value)}
                                    placeholder="例：宏達食品"
                                />
                            </div>

                            <div className="space-y-2">
                                <Label htmlFor="tax_id">統一編號</Label>
                                <Input
                                    id="tax_id"
                                    value={data.tax_id}
                                    onChange={(e) => setData("tax_id", e.target.value)}
                                    placeholder="8 位數字"
                                    maxLength={8}
                                />
                                {errors.tax_id && <p className="text-sm text-red-500">{errors.tax_id}</p>}
                            </div>

                            <div className="space-y-2">
                                <Label htmlFor="owner">負責人</Label>
                                <Input
                                    id="owner"
                                    value={data.owner}
                                    onChange={(e) => setData("owner", e.target.value)}
                                    placeholder="負責人姓名"
                                />
                            </div>
                        </div>
                    </div>

                    {/* 聯絡資訊區塊 */}
                    <div className="space-y-4">
                        <h3 className="text-lg font-medium border-b pb-2 text-primary">聯絡資訊</h3>
                        <div className="grid grid-cols-1 md:grid-cols-2 gap-4">
                            <div className="space-y-2">
                                <Label htmlFor="contact_name">聯絡人</Label>
                                <Input
                                    id="contact_name"
                                    value={data.contact_name}
                                    onChange={(e) => setData("contact_name", e.target.value)}
                                    placeholder="業務或聯絡窗口姓名"
                                />
                            </div>

                            <div className="space-y-2">
                                <Label htmlFor="email">電子郵件</Label>
                                <Input
                                    id="email"
                                    type="email"
                                    value={data.email}
                                    onChange={(e) => setData("email", e.target.value)}
                                    placeholder="example@mail.com"
                                />
                            </div>

                            <div className="space-y-2">
                                <Label htmlFor="tel">市話</Label>
                                <Input
                                    id="tel"
                                    value={data.tel}
                                    onChange={(e) => setData("tel", e.target.value)}
                                    placeholder="例：02-23456789"
                                />
                            </div>

                            <div className="space-y-2">
                                <Label htmlFor="phone">連絡電話</Label>
                                <Input
                                    id="phone"
                                    value={data.phone}
                                    onChange={(e) => setData("phone", e.target.value)}
                                    placeholder="例：0912-345-678"
                                />
                            </div>

                            <div className="space-y-2 col-span-2">
                                <Label htmlFor="address">地址</Label>
                                <Input
                                    id="address"
                                    value={data.address}
                                    onChange={(e) => setData("address", e.target.value)}
                                    placeholder="完整的營業或通訊地址"
                                />
                            </div>
                        </div>
                    </div>

                    {/* 備註區塊 */}
                    <div className="space-y-2">
                        <Label htmlFor="remark">備註</Label>
                        <Textarea
                            id="remark"
                            value={data.remark}
                            onChange={(e) => setData("remark", e.target.value)}
                            placeholder="特殊交易習慣、配送時間要求等..."
                            className="resize-none"
                        />
                    </div>

                    <DialogFooter>
                        <Button
                            type="button"
                            variant="outline"
                            onClick={() => onOpenChange(false)}
                            className="button-outlined-primary"
                        >
                            取消
                        </Button>
                        <Button type="submit" className="button-filled-primary" disabled={processing}>
                            {processing ? "儲存... " : (vendor ? "儲存變更" : "新增廠商")}
                        </Button>
                    </DialogFooter>
                </form>
            </DialogContent>
        </Dialog>
    );
}