import ferinesiaLogo from "@/assets/logos/ferinesia-logo-thin.png";
import { endpoints } from "@/config/host";
import { createAxiosInstance } from "@/functions/axios-instance";
import { useEffect, useState } from "react";
import { useLocation, useSearchParams } from "react-router-dom";
import Cookies from "js-cookie";
import { AxiosError } from "axios";

/**
 * Copyright: Task Master (https://tailwindflex.com/@task_master)
 * URL: https://tailwindflex.com/@task_master/login-form-with-social-login-buttons
 */

export interface InputValidationError {
  type: string;
  message: string;
}

export default function Login() {
  const [searchParams] = useSearchParams();

  const [isLoading, setIsLoading] = useState(false);
  const [loginToken, setLoginToken] = useState<string | null>(null);
  const [terminalID, setTerminalID] = useState<string | null>(null);

  const [isSuccessLogin, setIsSuccessLogin] = useState<boolean | null>(null);

  const [username, setUsername] = useState("");
  const [password, setPassword] = useState("");

  const [inputValidationMsg, setInputValidationMsg] = useState<InputValidationError[]>([]);

  const doLogin = async () => {
    let validationErrors = []
    if(username.length <= 0){
      validationErrors.push({type: "username", message: "Username tidak boleh kosong"})
    }
    if(password.length <= 0){
      validationErrors.push({type: "password", message: "Password tidak boleh kosong"})
    }
    setInputValidationMsg(validationErrors)

    if(validationErrors.length > 0)
      return

    setIsLoading(true)
    try{
      const {data} = await createAxiosInstance({}).post(endpoints.login, {
        username,
        password,
        token: loginToken
      });
      setIsSuccessLogin(true);
      return
    }
    catch(err){
      if(err instanceof AxiosError){
        if(err.response?.data?.meta?.is_error){
          validationErrors.push({type: "username", message: err.response?.data?.meta?.message})
        }
      }
      else
        validationErrors.push({type: "username", message: "Terjadi kesalahan saat memproses data"})
    }
    finally{
      setInputValidationMsg(validationErrors)
      setIsLoading(false)
    }
  }

  useEffect(() => {
    setLoginToken(searchParams.get("state") ?? null);
    setTerminalID(searchParams.get("terminal_id") ?? null);
  });

  return (
    <div className="min-h-screen bg-gray-100 flex flex-col justify-center sm:py-12">
      <div className="p-10 xs:p-0 mx-auto md:w-full md:max-w-md">
        <div className="flex flex-col items-center">
          <img src={ferinesiaLogo} width={128} />
          <h1 className="font-bold text-center text-2xl mb-5">
            <span className="text-blue-500">ferinesia</span>
            <span className="text-yellow-500">.com</span>
          </h1>
        </div>
        <div className="bg-white shadow w-full rounded-lg pt-4 pb-4">
          {
            (isSuccessLogin == null || !isSuccessLogin) && <>
              <div className="px-5 py-2">
                <label className="font-semibold text-sm text-gray-600 pb-1 block">
                  Terminal ID
                </label>
                <input
                  type="text"
                  className="border rounded-lg px-3 py-2 mt-1 mb-1 text-sm w-full"
                  value={terminalID ?? "N/A"}
                  disabled
                />
                {/* {
                  inputValidationMsg.find(x => x.type == "username") && 
                    <span className="text-red-500">{inputValidationMsg.find(x => x.type == "username")!.message}</span>
                } */}
              </div>
              <div className="px-5 py-2">
                <label className="font-semibold text-sm text-gray-600 pb-1 block">
                  Username
                </label>
                <input
                  type="text"
                  className="border rounded-lg px-3 py-2 mt-1 mb-1 text-sm w-full"
                  onInput={(e) => setUsername(e.currentTarget.value)}
                />
                {
                  inputValidationMsg.find(x => x.type == "username") && 
                    <span className="text-red-500">{inputValidationMsg.find(x => x.type == "username")!.message}</span>
                }
              </div>
              <div className="px-5 py-2">
                <label className="font-semibold text-sm text-gray-600 pb-1 block">
                  Password
                </label>
                <input
                  type="password"
                  className="border rounded-lg px-3 py-2 mt-1 mb-1 text-sm w-full"
                  onInput={(e) => setPassword(e.currentTarget.value)}
                />
                {
                  inputValidationMsg.find(x => x.type == "password") && 
                    <span className="text-red-500">{inputValidationMsg.find(x => x.type == "password")!.message}</span>
                }
              </div>
              <div className="px-5 py-2">
                {terminalID != null && loginToken != null && (
                  <button
                    onClick={doLogin}
                    disabled={isLoading}
                    type="button"
                    className="transition duration-200 bg-blue-500 hover:bg-blue-600 focus:bg-blue-700 focus:shadow-sm focus:ring-4 focus:ring-blue-500 focus:ring-opacity-50 text-white w-full py-2.5 rounded-lg text-sm shadow-sm hover:shadow-md font-semibold text-center flex flex-row justify-center align-middle items-center disabled:bg-gray-300"
                  >
                    {isLoading && (
                      <span
                        className="animate-spin inline-block size-4 border-[3px] border-current border-t-transparent text-white rounded-full mr-2"
                        role="status"
                        aria-label="loading"
                      >
                        <span className="sr-only">Loading...</span>
                      </span>
                    )}
                    <span className="inline-block mr-2">
                      {isLoading ? "Mohon Tunggu" : "Login"}
                    </span>
                    {!isLoading && (
                      <svg
                        xmlns="http://www.w3.org/2000/svg"
                        fill="none"
                        viewBox="0 0 24 24"
                        stroke="currentColor"
                        className="w-4 h-4 inline-block"
                      >
                        <path
                          stroke-linecap="round"
                          stroke-linejoin="round"
                          stroke-width="2"
                          d="M17 8l4 4m0 0l-4 4m4-4H3"
                        />
                      </svg>
                    )}
                  </button>
                )}

                {(terminalID == null || loginToken == null) && <span className="text-[#ff0015]">Terminal ID dan Token Akses tidak valid.</span>}
              </div>
            </>
          }
          {
            isSuccessLogin && <div className="px-5 py-2">
              <h4 className="text-xl text-green-600 text-center">Sukses</h4>
              <h5 className="text-lg text-center mt-4">Berhasil melakukan login untuk penampil jadwal. Anda dapat menutup halaman ini.</h5>
            </div>
          }
        </div>
      </div>
    </div>
  );
}