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Example:\r\n                   already registered function getScenes v1.5.0.0,\r\n                                      function getScenes v1.5.6.0,\r\n                                      function getScenes v0.0.0.0 (default),\r\n                   the client would like to call getScenes and its Homeserver version is 1.4.6.5.\r\n                   1.5.6.0 > 1.4.6.5 => next 1.5.0.0 > 1.4.6.5 => next 0.0.0.0 <= 1.4.6.5 => call 0.0.0.0 version. */\r\n                function recallFunction(functionName, options) {\r\n                    let defer = $q.defer();\r\n\r\n                    frontEndSettingsService.getFrontendSettings()\r\n                    .then(function(settings) {\r\n                        if (registeredFunctions[functionName]) {\r\n                            for (var i = 0; i < registeredFunctions[functionName].length; i++) {\r\n                                const func = registeredFunctions[functionName][i];\r\n                                if (versionCompare(\r\n                                        settings.HomeServerVersion,\r\n                                        func.version,\r\n                                        { zeroExtend: true }\r\n                                    ) >= 0)\r\n                                {\r\n                                    if (options\r\n                                        && func.options\r\n                                        && options.configVersion) {\r\n                                            if (func.options.minConfigVersion <= options.configVersion) {\r\n                                                defer.resolve(func.func);\r\n                                                console.log('recalled: ' + func.func());\r\n                                                return defer.promise;\r\n                                            }\r\n                                            else {\r\n                                                continue;\r\n                                            }\r\n                                    }\r\n                                    else {\r\n                                        defer.resolve(func.func);\r\n                                        return defer.promise;\r\n                                    }\r\n                                }\r\n                            }\r\n                            console.error('Data for registered function \"' + functionName + '\" not available for HomeServer version ' + settings.HomeServerVersion);\r\n                        }\r\n                    });\r\n\r\n                    return defer.promise;\r\n                }\r\n\r\n                /* Compare two string versions, e.g. 1.5.1.0 and 1.5.0.0 as numeric versions.\r\n\r\n                    versionCompare('1.5.3.0','1.5.12.0') => -1\r\n                    versionCompare('1.5.12.0','1.5.3.0') => +1\r\n                    versionCompare('1.5.0.0','1.5.0.0')  => 0\r\n\r\n                   https://stackoverflow.com/a/6832721 */\r\n                function versionCompare(v1, v2, options) {\r\n                    var lexicographical = options && options.lexicographical,\r\n                        zeroExtend = options && options.zeroExtend,\r\n                        v1parts = v1.split('.'),\r\n                        v2parts = v2.split('.');\r\n\r\n                    function isValidPart(x) {\r\n                        return (lexicographical ? /^\\d+[A-Za-z]*$/ : /^\\d+$/).test(x);\r\n                    }\r\n\r\n                    if (!v1parts.every(isValidPart) || !v2parts.every(isValidPart)) {\r\n                        return NaN;\r\n                    }\r\n\r\n                    if (zeroExtend) {\r\n                        while (v1parts.length < v2parts.length) v1parts.push(\"0\");\r\n                        while (v2parts.length < v1parts.length) v2parts.push(\"0\");\r\n                    }\r\n\r\n                    if (!lexicographical) {\r\n                        v1parts = v1parts.map(Number);\r\n                        v2parts = v2parts.map(Number);\r\n                    }\r\n\r\n                    for (var i = 0; i < v1parts.length; ++i) {\r\n                        if (v2parts.length === i) {\r\n                            return 1;\r\n                        }\r\n\r\n                        if (v1parts[i] === v2parts[i]) {\r\n                            continue;\r\n                        } else if (v1parts[i] > v2parts[i]) {\r\n                            return 1;\r\n                        } else {\r\n                            return -1;\r\n                        }\r\n                    }\r\n\r\n                    if (v1parts.length !== v2parts.length) {\r\n                        return -1;\r\n                    }\r\n\r\n                    return 0;\r\n                }\r\n\r\n                return {\r\n                    registerFunction: registerFunction,\r\n                    recallFunction: recallFunction,\r\n                    versionCompare: versionCompare\r\n                };\r\n            }\r\n        ]);\r\n\r\n})();\r\n"],"sourceRoot":"../../../../app"}