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Aria2 RPC

Aria2 RPC Library

Verzia zo dňa 19.10.2014. Pozri najnovšiu verziu.

Tento skript by nemal byť nainštalovaný priamo. Je to knižnica pre ďalšie skripty, ktorú by mali používať cez meta príkaz // @require https://update.greatest.deepsurf.us/scripts/5672/21844/Aria2%20RPC.js 

// Public Class Aria2 ( options )
var Aria2 = (function (_arrFn, _merge, _format, _isFunction) {
	var jsonrpc_ver = '2.0';

	// I'm lazy
	if (typeof GM_xmlhttpRequest == 'undefined') {
		console.error ('GM_xmlhttpRequest is required for `Aria2.jsonrpc` to work.');
		return null;
	}

	var AriaBase = function ( options ) {
		this.options = _merge ({
			auth: {
				type: AriaBase.AUTH.noAuth,
				user: '',
				pass: ''
			},
			host: '127.0.0.1',
			port: 6800
		}, options || {});

		this.id = parseInt (options, 10) || (+ new Date());
	};
	
	// 静态常量
	AriaBase.AUTH = {
		noAuth: 0,
		basic:  1,
		secret: 2
	};

	// public 函数
	AriaBase.prototype = {
		getBasicAuth: function () {
			return btoa (_format('%s:%s', this.options.auth.user, this.options.auth.pass));
		},

		send: function ( bIsDataBatch, data, cbSuccess, cbError ) {
			var srcTaskObj = { jsonrpc: jsonrpc_ver, id: this.id };

			var payload = {

				method: 'POST',
				url: _format('http://%s:%s/jsonrpc', this.options.host, this.options.port),
				headers: {
					'Content-Type': 'application/json; charset=UTF-8'
				},
				data: bIsDataBatch
					? data.map (function (e) { return _merge ({}, srcTaskObj, e); })
					: _merge ({}, srcTaskObj, data),
				onload: function (r) {
					var repData = JSON.parse (r.responseText);
					if (repData.error) {
						cbError && cbError (false, repData);
					} else {
						cbSuccess && cbSuccess (repData);
					}
				},
				onerror: cbError ? cbError.bind(null, false) : null
			};

			switch (this.options.auth.type) {
				case AriaBase.AUTH.noAuth:
					// DO NOTHING
					break;

				case AriaBase.AUTH.basic:
					payload.headers.Authorization = 'Basic ' + this.getBasicAuth();
					break;

				case AriaBase.AUTH.secret:
					(function (sToken) {
						if (bIsDataBatch) {
							for (var i = 0; i < payload.data.length; i++) {
								payload.data[i].params.splice(0, 0, sToken);
							}
						} else {
							if (!payload.data.params)
								payload.data.params = [];
							payload.data.params.splice(0, 0, sToken);
						}
					})(_format('token:%s', this.options.auth.pass));
					break;

				default:
					throw new Error('Undefined auth type: %s', this.options.auth.type);
			}

			payload.data = JSON.stringify ( payload.data );

			return GM_xmlhttpRequest (payload);
		},

		// batchAddUri ( foo, { uri: 'http://example.com/xxx', options: { ... } } )
		batchAddUri: function (fCallback) {
			// { url, name }
			var payload = [].slice.call (arguments, 1).map (function (arg) {
				return {
					method: 'aria2.addUri',
					params: [ arg.uri.map ? arg.uri : [ arg.uri ] ].concat (arg.options || [])
				};
			});
			
			return this.send (true, payload, fCallback, fCallback);
		}
	};


	// 添加各类函数
	_arrFn.forEach (function (sMethod) {
		// arg1, arg2, ... , [cbSuccess, [cbError]]
		AriaBase.prototype[sMethod] = function ( ) {
			var args = [].slice.call (arguments);

			var cbSuccess, cbError;
			if (args.length && _isFunction(args[args.length - 1])) {
				cbSuccess = args[args.length - 1];
				args.splice (-1, 1);

				if (args.length && _isFunction(args[args.length - 1])) {
					cbError = cbSuccess;
					cbSuccess = args[args.length - 1];
					args.splice (-1, 1);
				}
			}

			return this.send (false, {
				method: 'aria2.' + sMethod,
				params: args
			}, cbSuccess, cbError);
		};
	});
	
	return AriaBase;
})
// const 变量
([
	"addUri", "addTorrent", "addMetalink", "remove", "forceRemove",
	"pause", "pauseAll", "forcePause", "forcePauseAll", "unpause",
	"unpauseAll", "tellStatus", "getUris", "getFiles", "getPeers",
	"getServers", "tellActive", "tellWaiting", "tellStopped",
	"changePosition", "changeUri", "getOption", "changeOption",
	"getGlobalOption", "changeGlobalOption", "getGlobalStat",
	"purgeDownloadResult", "removeDownloadResult", "getVersion",
	"getSessionInfo", "shutdown", "forceShutdown", "saveSession"
], 
// private 函数
(function (base) {
	var _isObject = function (obj) {
		return obj instanceof Object;
	};
	var _merge = function (base) {
		var args = arguments,
			argL = args.length;
		for ( var i = 1; i < argL; i++ ) {
			Object.keys (args[i]).forEach (function (key) {
				if (_isObject(args[i][key]) && _isObject(base[key])) {
					base[key] = _merge (base[key], args[i][key]);
				} else {
					base[key] = args[i][key];
				}
			});
		}
		return base;
	};
	return _merge;
})(), function (src) {
	var args = arguments,
		argL = args.length;

	var ret = src.slice ();
	for ( var i = 1; i < argL; i++ )
		ret = ret.replace ('%s', args[i]);
	return ret;
}, function (foo) {
	return typeof foo === 'function'
});