import { gql, useMutation } from "@apollo/client";
import {
  Box,
  Button,
  FormControl,
  FormHelperText,
  FormLabel,
  Input,
  Modal,
  ModalBody,
  ModalCloseButton,
  ModalContent,
  ModalHeader,
  ModalOverlay,
  Tab,
  TabList,
  TabPanel,
  TabPanels,
  Tabs,
} from "@chakra-ui/react";
import React from "react";
import { ErrorMessage, getGraphQLErrorMessage } from "../util";

export default function LoginModal({ isOpen, onClose }) {
  return (
    <Modal isOpen={isOpen} onClose={onClose}>
      <ModalOverlay />
      <ModalContent>
        <ModalHeader>Welcome back to Dress to Impress! ✨</ModalHeader>
        <ModalCloseButton />
        <Tabs>
          <TabList>
            <Tab>Log in</Tab>
            <Tab>Create account</Tab>
          </TabList>
          <TabPanels>
            <TabPanel>
              <ModalBody>
                <LoginForm onSuccess={() => onClose()} />
              </ModalBody>
            </TabPanel>
            <TabPanel>
              <ModalBody>
                <CreateAccountForm />
              </ModalBody>
            </TabPanel>
          </TabPanels>
        </Tabs>
      </ModalContent>
    </Modal>
  );
}

function LoginForm({ onSuccess }) {
  const [username, setUsername] = React.useState("");
  const [password, setPassword] = React.useState("");

  const [
    sendLoginMutation,
    { loading, error, data, called, reset },
  ] = useMutation(gql`
    mutation LoginForm_Login($username: String!, $password: String!) {
      login(username: $username, password: $password) {
        id
        username
      }
    }
  `);

  return (
    <form
      onSubmit={(e) => {
        e.preventDefault();
        sendLoginMutation({
          variables: { username, password },
        })
          .then(({ data }) => {
            if (data?.login != null) {
              onSuccess();
            }
          })
          .catch((e) => {}); // handled in error UI
      }}
    >
      <FormControl>
        <FormLabel>DTI Username</FormLabel>
        <Input
          type="text"
          value={username}
          onChange={(e) => {
            setUsername(e.target.value);
            reset();
          }}
        />
        <FormHelperText>
          This is separate from your Neopets.com account.
        </FormHelperText>
      </FormControl>
      <Box height="4" />
      <FormControl>
        <FormLabel>DTI Password</FormLabel>
        <Input
          type="password"
          value={password}
          onChange={(e) => {
            setPassword(e.target.value);
            reset();
          }}
        />
        <FormHelperText>
          Careful, never enter your Neopets password on another site!
        </FormHelperText>
      </FormControl>

      {error && (
        <ErrorMessage marginTop="4">
          Oops, login failed: "{getGraphQLErrorMessage(error)}". Try again?
        </ErrorMessage>
      )}

      {called && !loading && !error && data?.login == null && (
        <ErrorMessage marginTop="4">
          We couldn't find a match for that username and password. Try again?
        </ErrorMessage>
      )}

      <Box marginTop="6" display="flex" alignItems="center">
        <Button size="sm" onClick={() => alert("TODO: Forgot password")}>
          Forgot password?
        </Button>
        <Box flex="1 0 auto" width="4" />
        <Button type="submit" colorScheme="green" isLoading={loading}>
          Log in
        </Button>
      </Box>
    </form>
  );
}

function CreateAccountForm() {
  const onSubmit = (e) => {
    e.preventDefault();
    alert("TODO: Create account!");
  };

  return (
    <form onSubmit={onSubmit}>
      <FormControl>
        <FormLabel>DTI Username</FormLabel>
        <Input type="text" />
        <FormHelperText>
          This will be separate from your Neopets.com account.
        </FormHelperText>
      </FormControl>
      <Box height="4" />
      <FormControl>
        <FormLabel>DTI Password</FormLabel>
        <Input type="password" />
        <FormHelperText>
          Careful, never use your Neopets password for another site!
        </FormHelperText>
      </FormControl>
      <Box height="4" />
      <FormControl>
        <FormLabel>Confirm DTI Password</FormLabel>
        <Input type="password" />
        <FormHelperText>One more time, to make sure!</FormHelperText>
      </FormControl>
      <Box height="4" />
      <FormControl>
        <FormLabel>Email address</FormLabel>
        <Input type="password" />
        <FormHelperText>
          We'll use this in the future if you need to reset your password, or
          for us to contact you about your account. We won't sell this address,
          and we won't send marketing-y emails.
        </FormHelperText>
      </FormControl>
      <Box height="6" />
      <Box display="flex" justifyContent="flex-end">
        <Button type="submit" colorScheme="green">
          Create account
        </Button>
      </Box>
    </form>
  );
}