lbry-desktop/ui/js/lbry.js

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JavaScript
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import lbryio from "./lbryio.js";
import lighthouse from "./lighthouse.js";
import jsonrpc from "./jsonrpc.js";
import lbryuri from "./lbryuri.js";
import { getLocal, getSession, setSession, setLocal } from "./utils.js";
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const { remote, ipcRenderer } = require("electron");
const menu = remote.require("./menu/main-menu");
let lbry = {
isConnected: false,
daemonConnectionString: "http://localhost:5279/lbryapi",
pendingPublishTimeout: 20 * 60 * 1000,
defaultClientSettings: {
showNsfw: false,
showUnavailable: true,
debug: false,
useCustomLighthouseServers: false,
customLighthouseServers: [],
showDeveloperMenu: false,
language: "en",
},
};
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function apiCall(method, params, resolve, reject) {
return jsonrpc.call(
lbry.daemonConnectionString,
method,
params,
resolve,
reject,
reject
);
}
/**
* Records a publish attempt in local storage. Returns a dictionary with all the data needed to
* needed to make a dummy claim or file info object.
*/
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let pendingId = 0;
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function savePendingPublish({ name, channel_name }) {
let uri;
if (channel_name) {
uri = lbryuri.build({ name: channel_name, path: name }, false);
} else {
uri = lbryuri.build({ name: name }, false);
}
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++pendingId;
const pendingPublishes = getLocal("pendingPublishes") || [];
const newPendingPublish = {
name,
channel_name,
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claim_id: "pending-" + pendingId,
txid: "pending-" + pendingId,
nout: 0,
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outpoint: "pending-" + pendingId + ":0",
time: Date.now(),
};
setLocal("pendingPublishes", [...pendingPublishes, newPendingPublish]);
return newPendingPublish;
}
/**
* If there is a pending publish with the given name or outpoint, remove it.
* A channel name may also be provided along with name.
*/
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function removePendingPublishIfNeeded({ name, channel_name, outpoint }) {
function pubMatches(pub) {
return (
pub.outpoint === outpoint ||
(pub.name === name &&
(!channel_name || pub.channel_name === channel_name))
);
}
setLocal(
"pendingPublishes",
lbry.getPendingPublishes().filter(pub => !pubMatches(pub))
);
}
/**
* Gets the current list of pending publish attempts. Filters out any that have timed out and
* removes them from the list.
*/
lbry.getPendingPublishes = function() {
const pendingPublishes = getLocal("pendingPublishes") || [];
const newPendingPublishes = pendingPublishes.filter(
pub => Date.now() - pub.time <= lbry.pendingPublishTimeout
);
setLocal("pendingPublishes", newPendingPublishes);
return newPendingPublishes;
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};
/**
* Gets a pending publish attempt by its name or (fake) outpoint. A channel name can also be
* provided along withe the name. If no pending publish is found, returns null.
*/
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function getPendingPublish({ name, channel_name, outpoint }) {
const pendingPublishes = lbry.getPendingPublishes();
return (
pendingPublishes.find(
pub =>
pub.outpoint === outpoint ||
(pub.name === name &&
(!channel_name || pub.channel_name === channel_name))
) || null
);
}
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function pendingPublishToDummyClaim({
channel_name,
name,
outpoint,
claim_id,
txid,
nout,
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}) {
return { name, outpoint, claim_id, txid, nout, channel_name };
}
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function pendingPublishToDummyFileInfo({ name, outpoint, claim_id }) {
return { name, outpoint, claim_id, metadata: null };
}
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//core
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lbry._connectPromise = null;
lbry.connect = function() {
if (lbry._connectPromise === null) {
lbry._connectPromise = new Promise((resolve, reject) => {
let tryNum = 0;
function checkDaemonStartedFailed() {
if (tryNum <= 200) {
// Move # of tries into constant or config option
setTimeout(() => {
tryNum++;
checkDaemonStarted();
}, tryNum < 50 ? 400 : 1000);
} else {
reject(new Error("Unable to connect to LBRY"));
}
}
// Check every half second to see if the daemon is accepting connections
function checkDaemonStarted() {
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lbry.status().then(resolve).catch(checkDaemonStartedFailed);
}
checkDaemonStarted();
});
}
return lbry._connectPromise;
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};
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/**
* Takes a LBRY URI; will first try and calculate a total cost using
* Lighthouse. If Lighthouse can't be reached, it just retrives the
* key fee.
*
* Returns an object with members:
* - cost: Number; the calculated cost of the name
* - includes_data: Boolean; indicates whether or not the data fee info
* from Lighthouse is included.
*/
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lbry.costPromiseCache = {};
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lbry.getCostInfo = function(uri) {
if (lbry.costPromiseCache[uri] === undefined) {
lbry.costPromiseCache[uri] = new Promise((resolve, reject) => {
const COST_INFO_CACHE_KEY = "cost_info_cache";
let costInfoCache = getSession(COST_INFO_CACHE_KEY, {});
function cacheAndResolve(cost, includesData) {
costInfoCache[uri] = { cost, includesData };
setSession(COST_INFO_CACHE_KEY, costInfoCache);
resolve({ cost, includesData });
}
if (!uri) {
return reject(new Error(`URI required.`));
}
if (costInfoCache[uri] && costInfoCache[uri].cost) {
return resolve(costInfoCache[uri]);
}
function getCost(uri, size) {
lbry
.stream_cost_estimate({ uri, ...(size !== null ? { size } : {}) })
.then(cost => {
cacheAndResolve(cost, size !== null);
}, reject);
}
const uriObj = lbryuri.parse(uri);
const name = uriObj.path || uriObj.name;
lighthouse.get_size_for_name(name).then(size => {
if (size) {
getCost(name, size);
} else {
getCost(name, null);
}
});
});
}
return lbry.costPromiseCache[uri];
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};
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/**
* Publishes a file. The optional fileListedCallback is called when the file becomes available in
* lbry.file_list() during the publish process.
*
* This currently includes a work-around to cache the file in local storage so that the pending
* publish can appear in the UI immediately.
*/
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lbry.publishDeprecated = function(
params,
fileListedCallback,
publishedCallback,
errorCallback
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) {
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lbry.publish(params).then(
result => {
if (returnedPending) {
return;
}
clearTimeout(returnPendingTimeout);
publishedCallback(result);
},
err => {
if (returnedPending) {
return;
}
clearTimeout(returnPendingTimeout);
errorCallback(err);
}
);
let returnedPending = false;
// Give a short grace period in case publish() returns right away or (more likely) gives an error
const returnPendingTimeout = setTimeout(() => {
returnedPending = true;
if (publishedCallback) {
savePendingPublish({
name: params.name,
channel_name: params.channel_name,
});
publishedCallback(true);
}
if (fileListedCallback) {
const { name, channel_name } = params;
savePendingPublish({
name: params.name,
channel_name: params.channel_name,
});
fileListedCallback(true);
}
}, 2000);
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};
lbry.getClientSettings = function() {
var outSettings = {};
for (let setting of Object.keys(lbry.defaultClientSettings)) {
var localStorageVal = localStorage.getItem("setting_" + setting);
outSettings[setting] =
localStorageVal === null
? lbry.defaultClientSettings[setting]
: JSON.parse(localStorageVal);
}
return outSettings;
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};
lbry.getClientSetting = function(setting) {
var localStorageVal = localStorage.getItem("setting_" + setting);
if (setting == "showDeveloperMenu") {
return true;
}
return localStorageVal === null
? lbry.defaultClientSettings[setting]
: JSON.parse(localStorageVal);
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};
lbry.setClientSettings = function(settings) {
for (let setting of Object.keys(settings)) {
lbry.setClientSetting(setting, settings[setting]);
}
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};
lbry.setClientSetting = function(setting, value) {
return localStorage.setItem("setting_" + setting, JSON.stringify(value));
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};
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//utilities
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lbry.formatCredits = function(amount, precision) {
return amount.toFixed(precision || 1).replace(/\.?0+$/, "");
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};
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lbry.formatName = function(name) {
// Converts LBRY name to standard format (all lower case, no special characters, spaces replaced by dashes)
name = name.replace("/s+/g", "-");
name = name.toLowerCase().replace(/[^a-z0-9\-]/g, "");
return name;
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};
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lbry.imagePath = function(file) {
return "img/" + file;
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};
lbry.getMediaType = function(contentType, fileName) {
if (contentType) {
return /^[^/]+/.exec(contentType)[0];
} else if (fileName) {
var dotIndex = fileName.lastIndexOf(".");
if (dotIndex == -1) {
return "unknown";
}
var ext = fileName.substr(dotIndex + 1);
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if (/^mp4|m4v|webm|flv|f4v|ogv$/i.test(ext)) {
return "video";
} else if (/^mp3|m4a|aac|wav|flac|ogg|opus$/i.test(ext)) {
return "audio";
} else if (
/^html|htm|xml|pdf|odf|doc|docx|md|markdown|txt|epub|org$/i.test(ext)
) {
return "document";
} else {
return "unknown";
}
} else {
return "unknown";
}
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};
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lbry._subscribeIdCount = 0;
lbry._balanceSubscribeCallbacks = {};
lbry._balanceSubscribeInterval = 5000;
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lbry._balanceUpdateInterval = null;
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lbry._updateBalanceSubscribers = function() {
lbry.wallet_balance().then(function(balance) {
for (let callback of Object.values(lbry._balanceSubscribeCallbacks)) {
callback(balance);
}
});
if (
!lbry._balanceUpdateInterval &&
Object.keys(lbry._balanceSubscribeCallbacks).length
) {
lbry._balanceUpdateInterval = setInterval(() => {
lbry._updateBalanceSubscribers();
}, lbry._balanceSubscribeInterval);
}
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};
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lbry.balanceSubscribe = function(callback) {
const subscribeId = ++lbry._subscribeIdCount;
lbry._balanceSubscribeCallbacks[subscribeId] = callback;
lbry._updateBalanceSubscribers();
return subscribeId;
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};
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lbry.balanceUnsubscribe = function(subscribeId) {
delete lbry._balanceSubscribeCallbacks[subscribeId];
if (
lbry._balanceUpdateInterval &&
!Object.keys(lbry._balanceSubscribeCallbacks).length
) {
clearInterval(lbry._balanceUpdateInterval);
}
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};
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lbry.showMenuIfNeeded = function() {
const showingMenu = sessionStorage.getItem("menuShown") || null;
const chosenMenu = lbry.getClientSetting("showDeveloperMenu")
? "developer"
: "normal";
if (chosenMenu != showingMenu) {
menu.showMenubar(chosenMenu == "developer");
}
sessionStorage.setItem("menuShown", chosenMenu);
};
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lbry.getAppVersionInfo = function() {
return new Promise((resolve, reject) => {
ipcRenderer.once("version-info-received", (event, versionInfo) => {
resolve(versionInfo);
});
ipcRenderer.send("version-info-requested");
});
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};
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/**
* Wrappers for API methods to simulate missing or future behavior. Unlike the old-style stubs,
* these are designed to be transparent wrappers around the corresponding API methods.
*/
/**
* Returns results from the file_list API method, plus dummy entries for pending publishes.
* (If a real publish with the same name is found, the pending publish will be ignored and removed.)
*/
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lbry.file_list = function(params = {}) {
return new Promise((resolve, reject) => {
const { name, channel_name, outpoint } = params;
/**
* If we're searching by outpoint, check first to see if there's a matching pending publish.
* Pending publishes use their own faux outpoints that are always unique, so we don't need
* to check if there's a real file.
*/
if (outpoint) {
const pendingPublish = getPendingPublish({ outpoint });
if (pendingPublish) {
resolve([pendingPublishToDummyFileInfo(pendingPublish)]);
return;
}
}
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apiCall(
"file_list",
params,
fileInfos => {
removePendingPublishIfNeeded({ name, channel_name, outpoint });
const dummyFileInfos = lbry
.getPendingPublishes()
.map(pendingPublishToDummyFileInfo);
resolve([...fileInfos, ...dummyFileInfos]);
},
reject
);
});
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};
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lbry.claim_list_mine = function(params = {}) {
return new Promise((resolve, reject) => {
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apiCall(
"claim_list_mine",
params,
claims => {
for (let { name, channel_name, txid, nout } of claims) {
removePendingPublishIfNeeded({
name,
channel_name,
outpoint: txid + ":" + nout,
});
}
const dummyClaims = lbry
.getPendingPublishes()
.map(pendingPublishToDummyClaim);
resolve([...claims, ...dummyClaims]);
},
reject
);
});
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};
lbry.claim_abandon = function(params = {}) {
return new Promise((resolve, reject) => {
apiCall("claim_abandon", params, resolve, reject);
});
};
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lbry._resolveXhrs = {};
lbry.resolve = function(params = {}) {
return new Promise((resolve, reject) => {
if (!params.uri) {
throw __("Resolve has hacked cache on top of it that requires a URI");
}
lbry._resolveXhrs[params.uri] = apiCall(
"resolve",
params,
function(data) {
resolve(data && data[params.uri] ? data[params.uri] : {});
},
reject
);
});
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};
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lbry.cancelResolve = function(params = {}) {
const xhr = lbry._resolveXhrs[params.uri];
if (xhr && xhr.readyState > 0 && xhr.readyState < 4) {
xhr.abort();
}
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};
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lbry = new Proxy(lbry, {
get: function(target, name) {
if (name in target) {
return target[name];
}
return function(params = {}) {
return new Promise((resolve, reject) => {
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apiCall(name, params, resolve, reject);
});
};
},
});
export default lbry;