2 lines
11 KiB
JavaScript
2 lines
11 KiB
JavaScript
!function(e,s){"object"==typeof exports&&"undefined"!=typeof module?s(exports):"function"==typeof define&&define.amd?define(["exports"],s):s((e="undefined"!=typeof globalThis?globalThis:e||self).Datafeeds={})}(this,(function(e){"use strict";function s(e){return void 0===e?"":"string"==typeof e?e:e.message}class t{constructor(e,s){this._datafeedUrl=e,this._requester=s}getBars(e,t,r){const o={symbol:e.ticker||"",resolution:t,from:r.from,to:r.to};return void 0!==r.countBack&&(o.countback=r.countBack),void 0!==e.currency_code&&(o.currencyCode=e.currency_code),void 0!==e.unit_id&&(o.unitId=e.unit_id),new Promise(((e,t)=>{this._requester.sendRequest(this._datafeedUrl,"history",o).then((s=>{if("ok"!==s.s&&"no_data"!==s.s)return void t(s.errmsg);const r=[],o={noData:!1};if("no_data"===s.s)o.noData=!0,o.nextTime=s.nextTime;else{const e=void 0!==s.v,t=void 0!==s.o;for(let o=0;o<s.t.length;++o){const i={time:1e3*s.t[o],close:parseFloat(s.c[o]),open:parseFloat(s.c[o]),high:parseFloat(s.c[o]),low:parseFloat(s.c[o])};t&&(i.open=parseFloat(s.o[o]),i.high=parseFloat(s.h[o]),i.low=parseFloat(s.l[o])),e&&(i.volume=parseFloat(s.v[o])),r.push(i)}}e({bars:r,meta:o})})).catch((e=>{const r=s(e);console.warn(`HistoryProvider: getBars() failed, error=${r}`),t(r)}))}))}}class r{constructor(e,s){this._subscribers={},this._requestsPending=0,this._historyProvider=e,setInterval(this._updateData.bind(this),s)}subscribeBars(e,s,t,r){this._subscribers.hasOwnProperty(r)||(this._subscribers[r]={lastBarTime:null,listener:t,resolution:s,symbolInfo:e},e.name)}unsubscribeBars(e){delete this._subscribers[e]}_updateData(){if(!(this._requestsPending>0)){this._requestsPending=0;for(const e in this._subscribers)this._requestsPending+=1,this._updateDataForSubscriber(e).then((()=>{this._requestsPending-=1,this._requestsPending})).catch((e=>{this._requestsPending-=1,s(e),this._requestsPending}))}}_updateDataForSubscriber(e){const s=this._subscribers[e],t=parseInt((Date.now()/1e3).toString()),r=t-function(e,s){let t=0;t="D"===e||"1D"===e?s:"M"===e||"1M"===e?31*s:"W"===e||"1W"===e?7*s:s*parseInt(e)/1440;return 24*t*60*60}(s.resolution,10);return this._historyProvider.getBars(s.symbolInfo,s.resolution,{from:r,to:t,countBack:2,firstDataRequest:!1}).then((s=>{this._onSubscriberDataReceived(e,s)}))}_onSubscriberDataReceived(e,s){if(!this._subscribers.hasOwnProperty(e))return;const t=s.bars;if(0===t.length)return;const r=t[t.length-1],o=this._subscribers[e];if(null!==o.lastBarTime&&r.time<o.lastBarTime)return;if(null!==o.lastBarTime&&r.time>o.lastBarTime){if(t.length<2)throw new Error("Not enough bars in history for proper pulse update. Need at least 2.");const e=t[t.length-2];o.listener(e)}o.lastBarTime=r.time,o.listener(r)}}class o{constructor(e){this._subscribers={},this._requestsPending=0,this._quotesProvider=e,setInterval(this._updateQuotes.bind(this,1),1e4),setInterval(this._updateQuotes.bind(this,0),6e4)}subscribeQuotes(e,s,t,r){this._subscribers[r]={symbols:e,fastSymbols:s,listener:t}}unsubscribeQuotes(e){delete this._subscribers[e]}_updateQuotes(e){if(!(this._requestsPending>0))for(const t in this._subscribers){this._requestsPending++;const r=this._subscribers[t];this._quotesProvider.getQuotes(1===e?r.fastSymbols:r.symbols).then((e=>{this._requestsPending--,this._subscribers.hasOwnProperty(t)&&(r.listener(e),this._requestsPending)})).catch((e=>{this._requestsPending--,s(e),this._requestsPending}))}}}function i(e,s,t,r){const o=e[s];return!Array.isArray(o)||r&&!Array.isArray(o[0])?o:o[t]}function n(e,s,t){return e+(void 0!==s?"_%|#|%_"+s:"")+(void 0!==t?"_%|#|%_"+t:"")}class a{constructor(e,s,t){this._exchangesList=["NYSE","FOREX","AMEX"],this._symbolsInfo={},this._symbolsList=[],this._datafeedUrl=e,this._datafeedSupportedResolutions=s,this._requester=t,this._readyPromise=this._init(),this._readyPromise.catch((e=>{console.error(`SymbolsStorage: Cannot init, error=${e.toString()}`)}))}resolveSymbol(e,s,t){return this._readyPromise.then((()=>{const r=this._symbolsInfo[n(e,s,t)];return void 0===r?Promise.reject("invalid symbol"):Promise.resolve(r)}))}searchSymbols(e,s,t,r){return this._readyPromise.then((()=>{const o=[],i=0===e.length;e=e.toUpperCase();for(const r of this._symbolsList){const n=this._symbolsInfo[r];if(void 0===n)continue;if(t.length>0&&n.type!==t)continue;if(s&&s.length>0&&n.exchange!==s)continue;const a=n.name.toUpperCase().indexOf(e),u=n.description.toUpperCase().indexOf(e);if(i||a>=0||u>=0){if(!o.some((e=>e.symbolInfo===n))){const e=a>=0?a:8e3+u;o.push({symbolInfo:n,weight:e})}}}const n=o.sort(((e,s)=>e.weight-s.weight)).slice(0,r).map((e=>{const s=e.symbolInfo;return{symbol:s.name,full_name:s.full_name,description:s.description,exchange:s.exchange,params:[],type:s.type,ticker:s.name}}));return Promise.resolve(n)}))}_init(){const e=[],s={};for(const t of this._exchangesList)s[t]||(s[t]=!0,e.push(this._requestExchangeData(t)));return Promise.all(e).then((()=>{this._symbolsList.sort()}))}_requestExchangeData(e){return new Promise(((t,r)=>{this._requester.sendRequest(this._datafeedUrl,"symbol_info",{group:e}).then((s=>{try{this._onExchangeDataReceived(e,s)}catch(e){return void r(e instanceof Error?e:new Error(`SymbolsStorage: Unexpected exception ${e}`))}t()})).catch((e=>{s(e),t()}))}))}_onExchangeDataReceived(e,s){let t=0;try{const e=s.symbol.length,r=void 0!==s.ticker;for(;t<e;++t){const e=s.symbol[t],o=i(s,"exchange-listed",t),a=i(s,"exchange-traded",t),c=a+":"+e,h=i(s,"currency-code",t),l=i(s,"unit-id",t),d=r?i(s,"ticker",t):e,_={ticker:d,name:e,base_name:[o+":"+e],full_name:c,listed_exchange:o,exchange:a,currency_code:h,original_currency_code:i(s,"original-currency-code",t),unit_id:l,original_unit_id:i(s,"original-unit-id",t),unit_conversion_types:i(s,"unit-conversion-types",t,!0),description:i(s,"description",t),has_intraday:u(i(s,"has-intraday",t),!1),has_no_volume:u(i(s,"has-no-volume",t),void 0),visible_plots_set:u(i(s,"visible-plots-set",t),void 0),minmov:i(s,"minmovement",t)||i(s,"minmov",t)||0,minmove2:i(s,"minmove2",t)||i(s,"minmov2",t),fractional:i(s,"fractional",t),pricescale:i(s,"pricescale",t),type:i(s,"type",t),session:i(s,"session-regular",t),session_holidays:i(s,"session-holidays",t),corrections:i(s,"corrections",t),timezone:i(s,"timezone",t),supported_resolutions:u(i(s,"supported-resolutions",t,!0),this._datafeedSupportedResolutions),has_daily:u(i(s,"has-daily",t),!0),intraday_multipliers:u(i(s,"intraday-multipliers",t,!0),["1","5","15","30","60"]),has_weekly_and_monthly:i(s,"has-weekly-and-monthly",t),has_empty_bars:i(s,"has-empty-bars",t),volume_precision:u(i(s,"volume-precision",t),0),format:"price"};this._symbolsInfo[d]=_,this._symbolsInfo[e]=_,this._symbolsInfo[c]=_,void 0===h&&void 0===l||(this._symbolsInfo[n(d,h,l)]=_,this._symbolsInfo[n(e,h,l)]=_,this._symbolsInfo[n(c,h,l)]=_),this._symbolsList.push(e)}}catch(r){throw new Error(`SymbolsStorage: API error when processing exchange ${e} symbol #${t} (${s.symbol[t]}): ${Object(r).message}`)}}}function u(e,s){return void 0!==e?e:s}function c(e,s,t){const r=e[s];return Array.isArray(r)?r[t]:r}class h{constructor(e,s){this._datafeedUrl=e,this._requester=s}getQuotes(e){return new Promise(((t,r)=>{this._requester.sendRequest(this._datafeedUrl,"quotes",{symbols:e}).then((e=>{"ok"===e.s?t(e.d):r(e.errmsg)})).catch((e=>{const t=s(e);r(`network error: ${t}`)}))}))}}class l{constructor(e){e&&(this._headers=e)}sendRequest(e,s,t){if(void 0!==t){const e=Object.keys(t);0!==e.length&&(s+="?"),s+=e.map((e=>`${encodeURIComponent(e)}=${encodeURIComponent(t[e].toString())}`)).join("&")}const r={credentials:"same-origin"};return void 0!==this._headers&&(r.headers=this._headers),fetch(`${e}/${s}`,r).then((e=>e.text())).then((e=>JSON.parse(e)))}}e.UDFCompatibleDatafeed=class extends class{constructor(e,s,i,n=1e4){this._configuration={supports_search:!1,supports_group_request:!0,supported_resolutions:["1","5","15","30","60","1D","1W","1M"],supports_marks:!1,supports_timescale_marks:!1},this._symbolsStorage=null,this._datafeedURL=e,this._requester=i,this._historyProvider=new t(e,this._requester),this._quotesProvider=s,this._dataPulseProvider=new r(this._historyProvider,n),this._quotesPulseProvider=new o(this._quotesProvider),this._configurationReadyPromise=this._requestConfiguration().then((e=>{null===e&&(e={supports_search:!1,supports_group_request:!0,supported_resolutions:["1","5","15","30","60","1D","1W","1M"],supports_marks:!1,supports_timescale_marks:!1}),this._setupWithConfiguration(e)}))}onReady(e){this._configurationReadyPromise.then((()=>{e(this._configuration)}))}getQuotes(e,s,t){this._quotesProvider.getQuotes(e).then(s).catch(t)}subscribeQuotes(e,s,t,r){this._quotesPulseProvider.subscribeQuotes(e,s,t,r)}unsubscribeQuotes(e){this._quotesPulseProvider.unsubscribeQuotes(e)}getMarks(e,t,r,o,i){if(!this._configuration.supports_marks)return;const n={symbol:e.ticker||"",from:t,to:r,resolution:i};this._send("marks",n).then((e=>{if(!Array.isArray(e)){const s=[];for(let t=0;t<e.id.length;++t)s.push({id:c(e,"id",t),time:c(e,"time",t),color:c(e,"color",t),text:c(e,"text",t),label:c(e,"label",t),labelFontColor:c(e,"labelFontColor",t),minSize:c(e,"minSize",t)});e=s}o(e)})).catch((e=>{s(e),o([])}))}getTimescaleMarks(e,t,r,o,i){if(!this._configuration.supports_timescale_marks)return;const n={symbol:e.ticker||"",from:t,to:r,resolution:i};this._send("timescale_marks",n).then((e=>{if(!Array.isArray(e)){const s=[];for(let t=0;t<e.id.length;++t)s.push({id:c(e,"id",t),time:c(e,"time",t),color:c(e,"color",t),label:c(e,"label",t),tooltip:c(e,"tooltip",t)});e=s}o(e)})).catch((e=>{s(e),o([])}))}getServerTime(e){this._configuration.supports_time&&this._send("time").then((s=>{const t=parseInt(s);isNaN(t)||e(t)})).catch((e=>{s(e)}))}searchSymbols(e,t,r,o){if(this._configuration.supports_search){const i={limit:30,query:e.toUpperCase(),type:r,exchange:t};this._send("search",i).then((e=>{if(void 0!==e.s)return e.errmsg,void o([]);o(e)})).catch((e=>{s(e),o([])}))}else{if(null===this._symbolsStorage)throw new Error("UdfCompatibleDatafeed: inconsistent configuration (symbols storage)");this._symbolsStorage.searchSymbols(e,t,r,30).then(o).catch(o.bind(null,[]))}}resolveSymbol(e,t,r,o){const i=o&&o.currencyCode,n=o&&o.unitId;function a(e){t(e)}if(this._configuration.supports_group_request){if(null===this._symbolsStorage)throw new Error("UdfCompatibleDatafeed: inconsistent configuration (symbols storage)");this._symbolsStorage.resolveSymbol(e,i,n).then(a).catch(r)}else{const t={symbol:e};void 0!==i&&(t.currencyCode=i),void 0!==n&&(t.unitId=n),this._send("symbols",t).then((e=>{void 0!==e.s?r("unknown_symbol"):a(e)})).catch((e=>{s(e),r("unknown_symbol")}))}}getBars(e,s,t,r,o){this._historyProvider.getBars(e,s,t).then((e=>{r(e.bars,e.meta)})).catch(o)}subscribeBars(e,s,t,r,o){this._dataPulseProvider.subscribeBars(e,s,t,r)}unsubscribeBars(e){this._dataPulseProvider.unsubscribeBars(e)}_requestConfiguration(){return this._send("config").catch((e=>(s(e),null)))}_send(e,s){return this._requester.sendRequest(this._datafeedURL,e,s)}_setupWithConfiguration(e){if(this._configuration=e,void 0===e.exchanges&&(e.exchanges=[]),!e.supports_search&&!e.supports_group_request)throw new Error("Unsupported datafeed configuration. Must either support search, or support group request");!e.supports_group_request&&e.supports_search||(this._symbolsStorage=new a(this._datafeedURL,e.supported_resolutions||[],this._requester)),JSON.stringify(e)}}{constructor(e,s=1e4){const t=new l;super(e,new h(e,t),t,s)}},Object.defineProperty(e,"__esModule",{value:!0})}));
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