import { createFileRoute, Link, useNavigate } from "@tanstack/react-router";
import { ArrowLeft, Plus } from "lucide-react";
import { useForm } from "react-hook-form";
import { zodResolver } from "@hookform/resolvers/zod";
import { z } from "zod";
import { useCreateDistributor, trpc } from "shared-react";

const formSchema = z.object({
	agency: z.string().min(1, "Agency name is required"),
	contact: z.string().min(1, "Contact person is required"),
	mobile: z
		.string()
		.length(10, "Valid 10-digit mobile number is required")
		.regex(/^\d{10}$/, "Must be 10 digits"),
	address: z.string().nullable().optional(),
});

type FormValues = z.infer<typeof formSchema>;

export const Route = createFileRoute("/distributors/add")({
	component: AddDistributorPage,
	staticData: {
		title: "Add Distributor",
		subtitle: "Register a new distributor agency",
	},
});

function AddDistributorPage() {
	const navigate = useNavigate();
	const createMutation = useCreateDistributor();
	const utils = trpc.useUtils();

	const {
		register,
		handleSubmit,
		formState: { errors },
	} = useForm<FormValues>({
		resolver: zodResolver(formSchema),
		defaultValues: {
			agency: "",
			contact: "",
			mobile: "",
			address: null,
		},
	});

	function onSubmit(values: FormValues) {
		createMutation.mutate(
			{
				agency: values.agency,
				contact: values.contact,
				mobile: values.mobile,
				address: values.address ?? null,
			},
			{
				onSuccess: () => {
					utils.distributor.list.invalidate();
					navigate({ to: "/distributors" });
				},
			},
		);
	}

	return (
		<div>
			<Link
				to="/distributors"
				className="inline-flex items-center gap-1.5 text-sm text-blue-600 hover:underline mb-5"
			>
				<ArrowLeft className="w-4 h-4" />
				Back to Distributors
			</Link>

			<form
				onSubmit={handleSubmit(onSubmit)}
				className="bg-white rounded-lg shadow-[0_0_0_1px_rgba(0,0,0,0.06),0_1px_2px_rgba(0,0,0,0.04)] p-8 max-w-2xl"
			>
				<div className="grid grid-cols-2 gap-5">
					<div className="col-span-full">
						<label className="block text-sm font-medium text-slate-900 mb-1.5">
							Agency Name{" "}
							<span className="text-red-600 ml-0.5">*</span>
						</label>
						<input
							type="text"
							{...register("agency")}
							placeholder="e.g. MediDistributors"
							className={`w-full px-3.5 py-2.5 border rounded-md text-sm text-slate-900 bg-white transition-colors focus:outline-none focus:ring-[3px] focus:ring-blue-100 ${errors.agency ? "border-red-600" : "border-slate-200 focus:border-blue-600"}`}
						/>
						{errors.agency && (
							<p className="text-sm text-red-600 mt-1">
								{errors.agency.message}
							</p>
						)}
					</div>

					<div>
						<label className="block text-sm font-medium text-slate-900 mb-1.5">
							Contact Person{" "}
							<span className="text-red-600 ml-0.5">*</span>
						</label>
						<input
							type="text"
							{...register("contact")}
							placeholder="e.g. Rahul Mehta"
							className={`w-full px-3.5 py-2.5 border rounded-md text-sm text-slate-900 bg-white transition-colors focus:outline-none focus:ring-[3px] focus:ring-blue-100 ${errors.contact ? "border-red-600" : "border-slate-200 focus:border-blue-600"}`}
						/>
						{errors.contact && (
							<p className="text-sm text-red-600 mt-1">
								{errors.contact.message}
							</p>
						)}
					</div>

					<div>
						<label className="block text-sm font-medium text-slate-900 mb-1.5">
							Contact Mobile{" "}
							<span className="text-red-600 ml-0.5">*</span>
						</label>
						<input
							type="tel"
							{...register("mobile", {
								onChange: (e) => {
									e.target.value = e.target.value
										.replace(/\D/g, "")
										.slice(0, 10);
								},
							})}
							placeholder="e.g. 9876500001"
							className={`w-full px-3.5 py-2.5 border rounded-md text-sm text-slate-900 bg-white transition-colors focus:outline-none focus:ring-[3px] focus:ring-blue-100 ${errors.mobile ? "border-red-600" : "border-slate-200 focus:border-blue-600"}`}
						/>
						{errors.mobile && (
							<p className="text-sm text-red-600 mt-1">
								{errors.mobile.message}
							</p>
						)}
					</div>

					<div className="col-span-full">
						<label className="block text-sm font-medium text-slate-900 mb-1.5">
							Address
						</label>
						<textarea
							{...register("address", {
								setValueAs: (v: string) => v || null,
							})}
							rows={3}
							placeholder="Full address of the distributor"
							className="w-full px-3.5 py-2.5 border border-slate-200 rounded-md text-sm text-slate-900 bg-white resize-y min-h-[80px] transition-colors focus:outline-none focus:ring-[3px] focus:ring-blue-100 focus:border-blue-600"
						/>
					</div>
				</div>

				<div className="flex justify-end gap-3 pt-5 mt-2 border-t border-slate-200">
					<Link
						to="/distributors"
						className="inline-flex items-center px-5 py-2.5 border border-slate-200 rounded-md text-sm font-medium text-slate-700 bg-white hover:bg-slate-50 transition-colors"
					>
						Cancel
					</Link>
					<button
						type="submit"
						disabled={createMutation.isPending}
						className="inline-flex items-center gap-1.5 px-6 py-2.5 bg-blue-600 text-white rounded-md text-sm font-medium hover:bg-blue-700 disabled:opacity-50 transition-colors"
					>
						<Plus className="w-[15px] h-[15px]" />
						{createMutation.isPending
							? "Saving..."
							: "Save Distributor"}
					</button>
				</div>

				{createMutation.error && (
					<p className="text-sm text-red-600 mt-4">
						Failed to create distributor. Please try again.
					</p>
				)}
			</form>
		</div>
	);
}