define(['appsettings'], function (appsettings) {
    'use strict';

    var PathSeparator = '\\';

    function getValidFileName(path) {

        return path;
    }

    function getMetadataPath() {
        return Windows.Storage.ApplicationData.current.localFolder.path;
    }

    function getFullMetadataPath(pathArray) {

        var localPath = getMetadataPath();

        var clone = pathArray.slice(0);
        clone.splice(0, 0, localPath);
        return clone.join(PathSeparator);
    }

    function getLocalPath() {

        var localPath = appsettings.syncPath();

        if (!localPath || localPath === '') {
            localPath = Windows.Storage.ApplicationData.current.localFolder.path;
        }

        return localPath;

    }

    function getFullLocalPath(pathArray) {

        var localPath = getLocalPath();

        var clone = pathArray.slice(0);
        clone.splice(0, 0, localPath);
        return clone.join(PathSeparator);
    }

    function getParentPath(path) {
        var pathArray = path.split(PathSeparator);

        if (pathArray.length === 0) {
            return null;
        }

        pathArray = pathArray.slice(0, pathArray.length - 1);
        return pathArray.join(PathSeparator);
    }

    function combinePath(path1, path2) {

        if (path1.endsWith(PathSeparator)) {
            path1 = path1.substr(0, path1.length - 1);
        }

        if (path2.startsWith(PathSeparator)) {
            path2 = path2.substr(1);
        }

        return path1 + PathSeparator + path2;
    }

    function deleteFile(path) {
        return Windows.Storage.StorageFile.getFileFromPathAsync(path).then(function (storageFile) {
            return storageFile.deleteAsync(Windows.Storage.StorageDeleteOption.permanentDelete).then(function () {
                return Promise.resolve(true);
            }, function () {
                return Promise.resolve(false);
            });
        }, function () {
            return Promise.resolve(false);
        });
    }

    function deleteDirectory(path) {
        return Windows.Storage.StorageFolder.getFolderFromPathAsync(path).then(function (storageFolder) {
            return storageFolder.DeleteAsync(Windows.Storage.StorageDeleteOption.permanentDelete).then(function () {
                return Promise.resolve(true);
            }, function () {
                return Promise.resolve(false);
            });
        }, function () {
            return Promise.resolve(false);
        });
    }

    function fileExists(path) {

        return Windows.Storage.StorageFile.getFileFromPathAsync(path).then(function (storageFile) {

            return Promise.resolve(storageFile !== null);
        }, function (err) {
            return Promise.resolve(false);
        });
    }

    function getItemFileSize(path) {
        return Windows.Storage.StorageFile.getFileFromPathAsync(path).then(function (storageFile) {
            return storageFile.getBasicPropertiesAsync().then(function (basicProperties) {
                return Promise.resolve(basicProperties.size);
            });
        });
    }

    function getImageUrl(pathArray) {
        var path = NativeFileRepository.getImageUrl(pathArray);
        return path;
    }

    return {
        getValidFileName: getValidFileName,
        getLocalPath: getLocalPath,
        getFullLocalPath: getFullLocalPath,
        getMetadataPath: getMetadataPath,
        getFullMetadataPath: getFullMetadataPath,
        getParentPath: getParentPath,
        combinePath: combinePath,
        deleteFile: deleteFile,
        deleteDirectory: deleteDirectory,
        fileExists: fileExists,
        getItemFileSize: getItemFileSize,
        getImageUrl: getImageUrl
    };
});