import {
    START_LOGIN,
    LOGIN_SUCCESS,
    LOGIN_FAIL,
    VALIDATE_USER,
    SIGNUP_SUCCESS,
    SIGNUP_FAIL,
    RESET_USER,
    LOGOUT,
    EDIT_START,
    EDIT_SUCCESS,
    EDIT_FAIL,
    RESET_EDIT,
} from "./defs";

import { API_ROOT, getToken, setToken } from "./util";
import { fetchLists } from "./lists";

function startLogin() {
    return { type: START_LOGIN };
}

function loginSuccess(user) {
    return { type: LOGIN_SUCCESS, user };
}

function loginFail(error) {
    return { type: LOGIN_FAIL, error };
}

function validateUser() {
    return { type: VALIDATE_USER };
}

export function loadUser() {
    return async (dispatch) => {
        if (getToken()) {
            const response = await fetch(`${API_ROOT}/users/user`, {
                headers: {
                    Authorization: `Bearer ${getToken()}`,
                    "content-type": "application/json",
                },
                method: "GET",
            });
            const json = await response.json();
            if (json.success) {
                dispatch(loginSuccess(json.data));
                dispatch(fetchLists());
            } else {
                dispatch(loginFail(json.error));
            }
        } else {
            dispatch(validateUser());
        }
    };
}

export function login(user) {
    return async (dispatch) => {
        dispatch(startLogin());
        const response = await fetch(`${API_ROOT}/users/login`, {
            body: JSON.stringify(user),
            headers: {
                "content-type": "application/json",
            },
            method: "POST",
        });
        const json = await response.json();
        if (json.success) {
            setToken(json.data.jwt);
            dispatch(loginSuccess(json.data));
            dispatch(fetchLists());
        } else {
            dispatch(loginFail(json.error));
        }
    };
}

export function loginJWT(jwt) {
    return async (dispatch) => {
        dispatch(startLogin());
        const response = await fetch(`${API_ROOT}/users/user`, {
            headers: {
                "content-type": "application/json",
                Authorization: `Bearer ${jwt}`,
            },
            method: "GET",
        });
        const json = await response.json();
        if (json.success) {
            setToken(jwt);
            dispatch(loginSuccess(json.data));
            dispatch(fetchLists());
        } else {
            dispatch(loginFail(json.error));
        }
    };
}

function signupSuccess(user) {
    return { type: SIGNUP_SUCCESS, user };
}

function signupFail(error) {
    return { type: SIGNUP_FAIL, error };
}

export function signup(user) {
    return async (dispatch) => {
        dispatch(startLogin());
        const response = await fetch(`${API_ROOT}/users`, {
            body: JSON.stringify(user),
            headers: {
                "content-type": "application/json",
            },
            method: "POST",
        });
        const json = await response.json();
        if (json.success) {
            setToken(json.data.jwt);
            dispatch(signupSuccess(json.data));
            dispatch(fetchLists());
        } else {
            dispatch(signupFail(json.error));
        }
    };
}

function startEdit(user) {
    return { type: EDIT_START, user };
}

function editSuccess(user) {
    return { type: EDIT_SUCCESS, user };
}

function editFail(error) {
    return { type: EDIT_FAIL, error };
}

export function edit(user) {
    return async (dispatch) => {
        dispatch(startEdit());
        const response = await fetch(`${API_ROOT}/users/user`, {
            body: JSON.stringify(user),
            headers: {
                Authorization: `Bearer ${getToken()}`,
                "content-type": "application/json",
            },
            method: "PATCH",
        });
        const json = await response.json();
        if (json.success) {
            dispatch(editSuccess(json.data));
        } else {
            dispatch(editFail(json.error));
        }
    };
}

export function deleteUser() {
    return async (dispatch) => {
        await fetch(`${API_ROOT}/users/user`, {
            headers: {
                Authorization: `Bearer ${getToken()}`,
                "content-type": "application/json",
            },
            method: "DELETE",
        });
        dispatch(reset());
    };
}

export function resetEdit() {
    return { type: RESET_EDIT };
}

export function reset() {
    return { type: RESET_USER };
}

export function logout() {
    return async (dispatch) => {
        dispatch({ type: LOGOUT });
    };
}