import AsyncStorage from '@react-native-community/async-storage';
import {Alert} from 'react-native';
import {
  FRIENDS_ENDPOINT,
  GET_REMAINING_INVITES,
  INVITE_FRIEND_ENDPOINT,
  USERS_FROM_CONTACTS_ENDPOINT,
} from '../constants';
import {ERROR_SOMETHING_WENT_WRONG_REFRESH} from '../constants/strings';
import {ContactType, FriendshipStatusType} from '../types';

export const loadFriends = async (userId: string, token: string) => {
  try {
    const response = await fetch(FRIENDS_ENDPOINT + `?user_id=${userId}`, {
      method: 'GET',
      headers: {
        Authorization: 'Token ' + token,
      },
    });
    if (response.status === 200) {
      const body = await response.json();
      return body;
    }
  } catch (error) {
    console.log(error);
  }
  return [];
};

export const friendOrUnfriendUser = async (
  friend: string,
  token: string,
  friendship_status: FriendshipStatusType,
) => {
  try {
    let body;
    let method = '';
    let endpoint = FRIENDS_ENDPOINT;

    switch (friendship_status) {
      case 'no_record':
        method = 'POST';
        body = JSON.stringify({
          requested: friend,
        });
        break;
      case 'requested':
        method = 'DELETE';
        endpoint += `${friend}/`;
        body = JSON.stringify({
          reason: 'cancelled',
        });
        break;
      case 'friends':
        method = 'DELETE';
        endpoint += `${friend}/`;
        body = JSON.stringify({
          reason: 'unfriended',
        });
    }

    const response = await fetch(endpoint, {
      method: method,
      headers: {
        'Content-Type': 'application/json',
        Authorization: 'Token ' + token,
      },
      body: body,
    });
    const status = response.status;
    if (Math.floor(status / 100) === 2) {
      return true;
    } else {
      console.log(await response.json());
      Alert.alert(
        'Something went wrong! 😭',
        "Would you believe me if I told you that I don't know what happened?",
      );
      return false;
    }
  } catch (error) {
    console.log(error);
    Alert.alert(
      'Something went wrong! 😭',
      "Would you believe me if I told you that I don't know what happened?",
    );
    return false;
  }
};

export const addFriendService = async (friend: string, token: string) => {
  try {
    const response = await fetch(FRIENDS_ENDPOINT, {
      method: 'POST',
      headers: {
        'Content-Type': 'application/json',
        Authorization: 'Token ' + token,
      },
      body: JSON.stringify({
        requested: friend,
      }),
    });
    const status = response.status;
    if (Math.floor(status / 100) === 2) {
      return true;
    } else {
      console.log(await response.json());
      Alert.alert(
        'Something went wrong! 😭',
        "Would you believe me if I told you that I don't know what happened?",
      );
      return false;
    }
  } catch (error) {
    console.log(error);
    Alert.alert(
      'Something went wrong! 😭',
      "Would you believe me if I told you that I don't know what happened?",
    );
    return false;
  }
};

export const acceptFriendRequestService = async (
  requester_id: string,
  token: string | null,
) => {
  try {
    const response = await fetch(FRIENDS_ENDPOINT + `${requester_id}/`, {
      method: 'PATCH',
      headers: {
        'Content-Type': 'application/json',
        Authorization: 'Token ' + token,
      },
    });
    const status = response.status;
    if (Math.floor(status / 100) === 2) {
      return true;
    } else {
      console.log(await response.json());
      Alert.alert(
        'Something went wrong! 😭',
        "Would you believe me if I told you that I don't know what happened?",
      );
      return false;
    }
  } catch (error) {
    console.log(error);
    Alert.alert(
      'Something went wrong! 😭',
      "Would you believe me if I told you that I don't know what happened?",
    );
    return false;
  }
};

export const deleteFriendshipService = async (
  user_id: string,
  reason: 'declined' | 'cancelled' | 'unfriended',
  token: string | null,
) => {
  try {
    console.log('deleteFriendshipService!');
    const response = await fetch(FRIENDS_ENDPOINT + `${user_id}/`, {
      method: 'DELETE',
      headers: {
        Authorization: 'Token ' + token,
      },
      body: JSON.stringify({
        reason,
      }),
    });
    const status = response.status;
    if (Math.floor(status / 100) === 2) {
      return true;
    } else {
      console.log(await response.json());
      Alert.alert(ERROR_SOMETHING_WENT_WRONG_REFRESH);
      return false;
    }
  } catch (error) {
    console.log(error);
    Alert.alert(ERROR_SOMETHING_WENT_WRONG_REFRESH);
    return false;
  }
};

export const usersFromContactsService = async (
  contacts: Array<ContactType>,
) => {
  try {
    const token = await AsyncStorage.getItem('token');
    const response = await fetch(USERS_FROM_CONTACTS_ENDPOINT, {
      method: 'POST',
      headers: {
        Authorization: 'Token ' + token,
      },
      body: JSON.stringify({
        contacts: contacts,
      }),
    });
    const status = response.status;
    if (Math.floor(status / 100) === 2) {
      const users_data = await response.json();
      return users_data;
    } else {
      console.log(
        'Something went wrong! 😭',
        'Not able to retrieve tagg users list',
      );
    }
  } catch (error) {
    console.log(error);
    Alert.alert(ERROR_SOMETHING_WENT_WRONG_REFRESH);
    return false;
  }
};

export const inviteFriendService = async (
  phoneNumber: string,
  inviteeFirstName: string,
  inviteeLastName: string,
  reminding: boolean,
) => {
  try {
    const token = await AsyncStorage.getItem('token');
    const response = await fetch(INVITE_FRIEND_ENDPOINT, {
      method: 'POST',
      headers: {
        Authorization: 'Token ' + token,
      },
      body: JSON.stringify({
        invitee_phone_number: phoneNumber,
        invitee_first_name: inviteeFirstName,
        invitee_last_name: inviteeLastName,
        reminding: reminding,
      }),
    });
    if (response.status === 201 || response.status === 200) {
      return await response.json();
    } else {
      return undefined;
    }
  } catch (error) {
    console.log(error);
    Alert.alert(ERROR_SOMETHING_WENT_WRONG_REFRESH);
    return false;
  }
};

export const getRemainingInviteCount = async () => {
  const token = await AsyncStorage.getItem('token');
  try {
    const response = await fetch(GET_REMAINING_INVITES, {
      method: 'GET',
      headers: {
        Authorization: 'Token ' + token,
      },
    });
    if (response.status === 200) {
      const data = await response.json();
      return data.invites_left;
    } else if (response.status === 500) {
      return -1;
    }
  } catch (error) {
    console.log(error);
    Alert.alert(ERROR_SOMETHING_WENT_WRONG_REFRESH);
  }
};