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- // @flow
-
- import * as SecureStore from 'expo-secure-store';
-
- export const ERROR_TYPE = {
- BAD_CREDENTIALS: 0,
- CONNECTION_ERROR: 1,
- SAVE_TOKEN: 2,
- NO_TOKEN: 3,
- NO_CONSENT: 4,
- };
-
- const AUTH_URL = "https://www.amicale-insat.fr/api/password";
-
- export default class ConnectionManager {
- static instance: ConnectionManager | null = null;
-
- #email: string;
- #token: string | null;
-
- listeners: Array<Function>;
-
- constructor() {
- this.#token = null;
- this.listeners = [];
- }
-
- /**
- * Get this class instance or create one if none is found
- * @returns {ConnectionManager}
- */
- static getInstance(): ConnectionManager {
- return ConnectionManager.instance === null ?
- ConnectionManager.instance = new ConnectionManager() :
- ConnectionManager.instance;
- }
-
- getToken() {
- return this.#token;
- }
-
- onLoginStateChange(newState: boolean) {
- for (let i = 0; i < this.listeners.length; i++) {
- if (this.listeners[i] !== undefined)
- this.listeners[i](newState);
- }
- }
-
- addLoginStateListener(listener: Function) {
- this.listeners.push(listener);
- }
-
- async recoverLogin() {
- return new Promise((resolve, reject) => {
- if (this.getToken() !== null)
- resolve(this.getToken());
- else {
- SecureStore.getItemAsync('token')
- .then((token) => {
- this.#token = token;
- if (token !== null) {
- this.onLoginStateChange(true);
- resolve(token);
- } else
- reject(false);
- })
- .catch(error => {
- reject(false);
- });
- }
- });
- }
-
- isLoggedIn() {
- return this.getToken() !== null;
- }
-
- async saveLogin(email: string, token: string) {
- return new Promise((resolve, reject) => {
- SecureStore.setItemAsync('token', token)
- .then(() => {
- this.#token = token;
- this.#email = email;
- this.onLoginStateChange(true);
- resolve(true);
- })
- .catch(error => {
- reject(false);
- });
- });
- }
-
- async disconnect() {
- return new Promise((resolve, reject) => {
- SecureStore.deleteItemAsync('token')
- .then(() => {
- this.#token = null;
- this.onLoginStateChange(false);
- resolve(true);
- })
- .catch((error) => {
- reject(false);
- });
- });
- }
-
- async connect(email: string, password: string) {
- let data = {
- email: email,
- password: password,
- };
- return new Promise((resolve, reject) => {
- fetch(AUTH_URL, {
- method: 'POST',
- headers: new Headers({
- 'Accept': 'application/json',
- 'Content-Type': 'application/json',
- }),
- body: JSON.stringify(data)
- }).then(async (response) => response.json())
- .then((data) => {
- if (this.isConnectionResponseValid(data)) {
- if (data.state) {
- this.saveLogin(email, data.token)
- .then(() => {
- resolve(true);
- })
- .catch(() => {
- reject(ERROR_TYPE.SAVE_TOKEN);
- });
- } else if (data.data !== undefined
- && data.data.consent !== undefined
- && !data.data.consent)
- reject(ERROR_TYPE.NO_CONSENT);
- else
- reject(ERROR_TYPE.BAD_CREDENTIALS);
- } else
- reject(ERROR_TYPE.CONNECTION_ERROR);
- })
- .catch((error) => {
- reject(ERROR_TYPE.CONNECTION_ERROR);
- });
- });
- }
-
- isRequestResponseValid(response: Object) {
- let valid = response !== undefined
- && response.state !== undefined
- && typeof response.state === "boolean";
-
- if (valid && response.state)
- valid = valid
- && response.data !== undefined
- && typeof response.data === "object";
- return valid;
- }
-
- isConnectionResponseValid(response: Object) {
- let valid = response !== undefined
- && response.state !== undefined
- && typeof response.state === "boolean";
-
- if (valid && response.state)
- valid = valid
- && response.token !== undefined
- && response.token !== ''
- && typeof response.token === "string";
- return valid;
- }
-
- async authenticatedRequest(url: string) {
- return new Promise((resolve, reject) => {
- if (this.getToken() !== null) {
- fetch(url, {
- method: 'POST',
- headers: new Headers({
- 'Accept': 'application/json',
- 'Content-Type': 'application/json',
- }),
- body: JSON.stringify({token: this.getToken()})
- }).then(async (response) => response.json())
- .then((data) => {
- if (this.isRequestResponseValid(data)) {
- if (data.state)
- resolve(data.data);
- else
- reject(ERROR_TYPE.BAD_CREDENTIALS);
- } else
- reject(ERROR_TYPE.CONNECTION_ERROR);
- })
- .catch(() => {
- reject(ERROR_TYPE.CONNECTION_ERROR);
- });
- } else
- reject(ERROR_TYPE.NO_TOKEN);
- });
- }
- }
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