import React, { useCallback, useContext, useState } from 'react';
import { useSafeAreaInsets } from 'react-native-safe-area-context';

import { Modal, OutlinedButton, ProfileCard, createStyleSheet } from '@gathertown/uikit-react-native-foundation';
import type {
  SendbirdGroupChannel,
  SendbirdGroupChannelCreateParams,
  SendbirdMember,
  SendbirdUser,
} from '@gathertown/uikit-utils';
import { Logger, PASS, getDefaultGroupChannelCreateParams, useIIFE } from '@gathertown/uikit-utils';

import { LocalizationContext } from '../contexts/LocalizationCtx';
import { SendbirdChatContext } from '../contexts/SendbirdChatCtx';

type OnCreateChannel = (channel: SendbirdGroupChannel) => void;
type OnBeforeCreateChannel = (
  channelParams: SendbirdGroupChannelCreateParams,
  users: SendbirdUser[] | SendbirdMember[],
) => SendbirdGroupChannelCreateParams | Promise<SendbirdGroupChannelCreateParams>;

type ShowOptions = {
  hideMessageButton?: boolean;
};

export type UserProfileContextType = {
  show(user: SendbirdUser | SendbirdMember, options?: ShowOptions): void;
  hide(): void;
};

type Props = React.PropsWithChildren<{
  onCreateChannel?: OnCreateChannel;
  onBeforeCreateChannel?: OnBeforeCreateChannel;
  statusBarTranslucent?: boolean;
}>;

let WARN_onCreateChannel = false;

export const UserProfileContext = React.createContext<UserProfileContextType | null>(null);
export const UserProfileProvider = ({
  children,
  onCreateChannel,
  onBeforeCreateChannel = PASS,
  statusBarTranslucent = true,
}: Props) => {
  const chatContext = useContext(SendbirdChatContext);
  const localizationContext = useContext(LocalizationContext);

  if (!chatContext) throw new Error('SendbirdChatContext is not provided');
  if (!localizationContext) throw new Error('LocalizationContext is not provided');

  if (__DEV__ && !WARN_onCreateChannel && !onCreateChannel) {
    Logger.warn(
      'You should pass `userProfile.onCreateChannel` prop to SendbirdUIKitContainer if want to use message in a user profile',
    );
    WARN_onCreateChannel = true;
  }

  const { bottom, left, right } = useSafeAreaInsets();

  const [user, setUser] = useState<SendbirdUser | SendbirdMember>();
  const [visible, setVisible] = useState(false);
  const [hideMessageButton, setHideMessageButton] = useState(false);

  const show: UserProfileContextType['show'] = useCallback(
    (user, options) => {
      if (chatContext.sbOptions.uikit.common.enableUsingDefaultUserProfile) {
        setUser(user);
        setVisible(true);
        setHideMessageButton(Boolean(options?.hideMessageButton));
      }
    },
    [chatContext.sbOptions.uikit.common.enableUsingDefaultUserProfile],
  );

  const hide: UserProfileContextType['hide'] = useCallback(() => {
    setVisible(false);
  }, []);

  const onDismiss = () => {
    setUser(undefined);
    setHideMessageButton(false);
  };

  const userProfileButton = useIIFE(() => {
    const isMe = chatContext.currentUser && user?.userId === chatContext.currentUser.userId;
    if (isMe) return undefined;
    if (hideMessageButton) return undefined;

    const onPressMessageButton = async () => {
      if (user) {
        const params = getDefaultGroupChannelCreateParams({
          invitedUserIds: [user.userId],
          currentUserId: chatContext.currentUser?.userId,
        });

        const processedParams = await onBeforeCreateChannel(params, [user]);
        hide();
        const channel = await chatContext.sdk.groupChannel.createChannel(processedParams);

        if (onCreateChannel) {
          onCreateChannel(channel);
        } else {
          Logger.warn(
            'Please set `onCreateChannel` before message to user from profile card, see `userProfile` prop in the `SendbirdUIKitContainer` props',
          );
        }
      }
    };

    return (
      <OutlinedButton onPress={onPressMessageButton}>
        {localizationContext.STRINGS.PROFILE_CARD.BUTTON_MESSAGE}
      </OutlinedButton>
    );
  });

  return (
    <UserProfileContext.Provider value={{ show, hide }}>
      {children}
      <Modal
        type={'slide'}
        onClose={hide}
        onDismiss={onDismiss}
        visible={visible && Boolean(user)}
        backgroundStyle={styles.modal}
        statusBarTranslucent={statusBarTranslucent}
      >
        {user && (
          <ProfileCard
            containerStyle={[
              styles.profileCardContainer,
              { paddingLeft: left, paddingRight: right, paddingBottom: bottom },
            ]}
            uri={user.profileUrl}
            username={user.nickname || localizationContext.STRINGS.LABELS.USER_NO_NAME}
            bodyLabel={localizationContext.STRINGS.PROFILE_CARD.BODY_LABEL}
            body={localizationContext.STRINGS.PROFILE_CARD.BODY(user)}
            button={userProfileButton}
          />
        )}
      </Modal>
    </UserProfileContext.Provider>
  );
};

const styles = createStyleSheet({
  modal: {
    justifyContent: 'flex-end',
  },
  profileCardContainer: {
    borderTopLeftRadius: 8,
    borderTopRightRadius: 8,
  },
});