"use client";
import { Eye, EyeOff } from 'lucide-react';
import React, { useState } from "react";
import { useAppDispatch, useAppSelector } from "@/store/hooks";
import { loginUser } from "@/store/slices/authSlice";
import { useRouter } from "next/navigation";
import { useForm } from "react-hook-form";
import { toast } from "react-toastify";

export default function SignInForm() {
  const [showPassword, setShowPassword] = useState(false);
  const [isChecked, setIsChecked] = useState(true);

  const { register, handleSubmit: handleFormSubmit, formState: { errors } } = useForm();
  const dispatch = useAppDispatch();
  const { isLoading } = useAppSelector((state) => state.auth);
  const router = useRouter();

  const onSubmit = async (data: any) => {
    try {
      const payload = { ...data, rememberMe: isChecked };
      const resultAction = await dispatch(loginUser(payload));
      if (loginUser.fulfilled.match(resultAction)) {
        toast.success("Login successful");
        router.push("/");
      } else {
        toast.error((resultAction.payload as string) || "Login failed");
      }
    } catch (err: any) {
      toast.error(err.message || "An error occurred");
    }
  };

  return (
    <div className="flex flex-col flex-1 w-full lg:w-1/2">
      <div className="w-full max-w-md mx-auto mb-5 sm:pt-10">
      </div>
      <div className="flex flex-col justify-center flex-1 w-full max-w-md mx-auto">
        <div>
          <div className="mb-5 sm:mb-8">
            <h1 className="mb-2 font-semibold text-gray-800 text-title-sm sm:text-title-md">
              Log In
            </h1>
          </div>
          <div>
            <form onSubmit={handleFormSubmit(onSubmit, (errors) => {
              if (errors.email) toast.error(errors.email.message as string);
              else if (errors.password) toast.error(errors.password.message as string);
              else toast.error("Please fill all required fields");
            })}>
              <div className="space-y-6">
                <div>
                  <label className="mb-1.5 block text-sm font-medium text-gray-700">Email
                    <span className="text-error-500">*</span>
                  </label>
                  <div className="relative">
                    <input
                      {...register("email", {
                        required: "Email is required",
                        pattern: {
                          value: /^[A-Z0-9._%+-]+@[A-Z0-9.-]+\.[A-Z]{2,}$/i,
                          message: "Invalid email address"
                        }
                      })}
                      placeholder="info@gmail.com"
                      className={`h-11 w-full rounded-lg border appearance-none px-4 py-2.5 text-sm shadow-theme-xs placeholder:text-gray-400 bg-transparent text-gray-800 outline-none ${errors.email ? 'border-error-500' : 'border-gray-300'}`}
                      type="text"
                    />
                  </div>
                  {errors.email && <p className="mt-1 text-xs text-error-500">{errors.email.message as string}</p>}
                </div>
                <div>
                  <label className="mb-1.5 block text-sm font-medium text-gray-700">Password
                    <span className="text-error-500">*</span>
                  </label>
                  <div className="relative">
                    <div className="relative">
                      <input
                        {...register("password", {
                          required: "Password is required",
                          minLength: { value: 6, message: "Password must be at least 6 characters" }
                        })}
                        placeholder="Enter your password"
                        className={`h-11 w-full rounded-lg border appearance-none px-4 py-2.5 text-sm shadow-theme-xs placeholder:text-gray-400 bg-transparent text-gray-800 outline-none ${errors.password ? 'border-error-500' : 'border-gray-300'}`}
                        type={showPassword ? "text" : "password"}
                      />
                    </div>
                    <span
                      className="absolute z-30 -translate-y-1/2 cursor-pointer right-4 top-1/2 text-gray-500 hover:text-gray-700"
                      onClick={() => setShowPassword(!showPassword)}
                    >
                      {showPassword ? <Eye size={20} /> : <EyeOff size={20} />}
                    </span>
                  </div>
                  {errors.password && <p className="mt-1 text-xs text-error-500">{errors.password.message as string}</p>}
                </div>
                <div className="flex items-center justify-between">
                  <div className="flex items-center gap-3">
                    <label className="flex items-center space-x-3 group cursor-pointer ">
                      <div className="relative w-5 h-5">
                        <input 
                          className="w-5 h-5 appearance-none cursor-pointer border border-gray-300 checked:border-transparent rounded-md checked:bg-brand-950 disabled:opacity-60" 
                          type="checkbox" 
                          checked={isChecked}
                          onChange={(e) => setIsChecked(e.target.checked)}
                        />
                        <svg className="absolute top-1/2 left-1/2 transform -translate-x-1/2 -translate-y-1/2 pointer-events-none" xmlns="http://www.w3.org/2000/svg" width="14" height="14" viewBox="0 0 14 14" fill="none"><path d="M11.6666 3.5L5.24992 9.91667L2.33325 7" stroke="white" strokeWidth="1.94437" strokeLinecap="round" strokeLinejoin="round"></path></svg>
                      </div>
                      <span className="block font-normal text-gray-700 text-theme-sm">Remember me</span>
                    </label>
                  </div>
                  <a className="text-sm text-brand-950 hover:text-yellow-500" href="/forgot-password">Forgot password?</a>
                </div>
                <div>
                  <button className="inline-flex items-center justify-center font-medium gap-2 rounded-lg transition w-full px-4 py-3 text-sm bg-brand-950 text-white shadow-theme-xs hover:text-brand-950 hover:bg-yellow-500 disabled:bg-yellow-500 disabled:opacity-50">Sign in</button>
                </div>
              </div>
            </form>
          </div>
        </div>
      </div>
    </div>

  );
}