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- // @flow
-
- import * as SecureStore from 'expo-secure-store';
-
- export const ERROR_TYPE = {
- SUCCESS: 0,
- BAD_CREDENTIALS: 1,
- BAD_TOKEN: 2,
- NO_CONSENT: 3,
- BAD_INPUT: 400,
- FORBIDDEN: 403,
- CONNECTION_ERROR: 404,
- SERVER_ERROR: 500,
- UNKNOWN: 999,
- };
-
- type response_format = {
- error: number,
- data: Object,
- }
-
- /**
- * champ: error
- *
- * 0 : SUCCESS -> pas d'erreurs
- * 1 : BAD_CREDENTIALS -> email ou mdp invalide
- * 2 : BAD_TOKEN -> session expirée
- * 3 : NO_CONSENT
- * 403 : FORBIDDEN -> accès a la ressource interdit
- * 500 : SERVER_ERROR -> pb coté serveur
- */
-
- const API_ENDPOINT = "https://www.amicale-insat.fr/api/";
- const AUTH_PATH = "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(API_ENDPOINT + AUTH_PATH, {
- method: 'POST',
- headers: new Headers({
- 'Accept': 'application/json',
- 'Content-Type': 'application/json',
- }),
- body: JSON.stringify(data)
- }).then(async (response) => response.json())
- .then((response: response_format) => {
- if (this.isConnectionResponseValid(response)) {
- if (response.error === ERROR_TYPE.SUCCESS) {
- this.saveLogin(email, response.data.token)
- .then(() => {
- resolve(true);
- })
- .catch(() => {
- reject(ERROR_TYPE.UNKNOWN);
- });
- } else
- reject(response.error);
- } else
- reject(ERROR_TYPE.CONNECTION_ERROR);
- })
- .catch((error) => {
- reject(ERROR_TYPE.CONNECTION_ERROR);
- });
- });
- }
-
- isResponseValid(response: response_format) {
- let valid = response !== undefined
- && response.error !== undefined
- && typeof response.error === "number";
-
- valid = valid
- && response.data !== undefined
- && typeof response.data === "object";
- return valid;
- }
-
- isConnectionResponseValid(response: response_format) {
- let valid = this.isResponseValid(response);
-
- if (valid && response.error === ERROR_TYPE.SUCCESS)
- valid = valid
- && response.data.token !== undefined
- && response.data.token !== ''
- && typeof response.data.token === "string";
- return valid;
- }
-
- generatePostArguments(keys: Array<string>, values: Array<string>) {
- let data = {};
- for (let i = 0; i < keys.length; i++) {
- data[keys[i]] = values[i];
- }
- return data;
- }
-
- async authenticatedRequest(path: string, keys: Array<string>|null, values: Array<any>|null) {
- return new Promise((resolve, reject) => {
- if (this.getToken() !== null) {
- let data = {};
- if (keys !== null && values !== null && keys.length === values.length)
- data = this.generatePostArguments(keys, values);
- // console.log(data);
- fetch(API_ENDPOINT + path, {
- method: 'POST',
- headers: new Headers({
- 'Accept': 'application/json',
- 'Content-Type': 'application/json',
- }),
- body: JSON.stringify({
- token: this.getToken(),
- ...data
- })
- }).then(async (response) => response.json())
- .then((response: response_format) => {
- // console.log(response);
- if (this.isResponseValid(response)) {
- if (response.error === ERROR_TYPE.SUCCESS)
- resolve(response.data);
- else
- reject(response.error);
- } else
- reject(ERROR_TYPE.CONNECTION_ERROR);
- })
- .catch(() => {
- reject(ERROR_TYPE.CONNECTION_ERROR);
- });
- } else
- reject(ERROR_TYPE.UNKNOWN);
- });
- }
- }
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