96 lines
2.5 KiB
JavaScript
96 lines
2.5 KiB
JavaScript
/*global web3 */
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let __embarkSwarm = {};
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const bytes = require("eth-lib/lib/bytes");
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__embarkSwarm.setProvider = function (options) {
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this.bzz = web3.bzz;
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this.protocol = options.protocol;
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this.host = options.host;
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this.port = options.port;
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this.connectUrl = `${options.protocol}://${options.host}:${options.port}`;
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this.connectError = new Error(`Cannot connect to Swarm node on ${this.connectUrl}`);
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this._getUrl = options.getUrl || `${this.connectUrl}/bzzr:/`;
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var promise = new Promise((resolve, reject) => {
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try {
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if (!this.bzz.currentProvider) {
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this.bzz.setProvider(`${options.protocol}://${options.host}:${options.port}`);
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}
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resolve(this);
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} catch (err) {
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console.log(err);
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reject(this.connectError);
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}
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});
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return promise;
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};
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__embarkSwarm.isAvailable = function () {
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return new Promise((resolve, reject) => {
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if (!this.bzz) {
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return resolve(false);
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}
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this.bzz.isAvailable()
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.then(resolve)
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.catch(() => {
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reject(this.connectError);
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});
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});
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};
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__embarkSwarm.saveText = function (text) {
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return new Promise((resolve, reject) => {
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this.isAvailable().then((isAvailable) => {
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if (!isAvailable) {
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return reject(this.connectError);
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}
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this.bzz.upload(text)
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.then(resolve)
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.catch(reject);
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}).catch(reject);
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});
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};
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__embarkSwarm.get = function (hash) {
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return new Promise((resolve, reject) => {
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this.isAvailable().then((isAvailable) => {
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if (!isAvailable) {
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return reject(this.connectError);
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}
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this.bzz.download(hash)
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.then((uint8Array) => resolve(bytes.toString(bytes.fromUint8Array(uint8Array))))
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.catch(reject);
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}).catch(reject);
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});
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};
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__embarkSwarm.uploadFile = function (inputSelector) {
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let file = inputSelector[0].files[0];
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if (file === undefined) {
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throw new Error('no file found');
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}
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return new Promise((resolve, reject) => {
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var reader = new FileReader();
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reader.onloadend = (event) => {
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var fileContent = new Uint8Array(event.target.result);
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this.isAvailable().then((isAvailable) => {
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if (!isAvailable) {
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return reject(this.connectError);
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}
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this.bzz.upload(fileContent)
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.then(resolve)
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.catch(reject);
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}).catch(reject);
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};
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reader.onerror = reject;
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reader.readAsArrayBuffer(file);
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});
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};
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__embarkSwarm.getUrl = function (hash) {
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return this._getUrl + hash;
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};
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