139 lines
3.8 KiB
JavaScript
139 lines
3.8 KiB
JavaScript
'use strict';
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angular.module('copayApp.services')
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.factory('fileStorageService', function(lodash, $log) {
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var root = {},
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_fs, _dir;
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root.init = function(cb) {
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if (_dir) return cb(null, _fs, _dir);
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function onFileSystemSuccess(fileSystem) {
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console.log('File system started: ', fileSystem.name, fileSystem.root.name);
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_fs = fileSystem;
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root.getDir(function(err, newDir) {
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if (err || !newDir.nativeURL) return cb(err);
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_dir = newDir
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$log.debug("Got main dir:", _dir.nativeURL);
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return cb(null, _fs, _dir);
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});
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}
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function fail(evt) {
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var msg = 'Could not init file system: ' + evt.target.error.code;
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console.log(msg);
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return cb(msg);
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};
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window.requestFileSystem(LocalFileSystem.PERSISTENT, 0, onFileSystemSuccess, fail);
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};
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root.get = function(k, cb) {
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root.init(function(err, fs, dir) {
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if (err) return cb(err);
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dir.getFile(k, {
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create: false,
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}, function(fileEntry) {
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if (!fileEntry) return cb();
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fileEntry.file(function(file) {
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var reader = new FileReader();
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reader.onloadend = function(e) {
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return cb(null, this.result)
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}
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reader.readAsText(file);
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});
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}, function(err) {
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// Not found
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if (err.code == 1) return cb();
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else return cb(err);
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});
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})
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};
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root.set = function(k, v, cb) {
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root.init(function(err, fs, dir) {
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if (err) return cb(err);
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dir.getFile(k, {
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create: true,
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}, function(fileEntry) {
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// Create a FileWriter object for our FileEntry (log.txt).
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fileEntry.createWriter(function(fileWriter) {
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fileWriter.onwriteend = function(e) {
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console.log('Write completed.');
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return cb();
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};
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fileWriter.onerror = function(e) {
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var err = e.error ? e.error : JSON.stringify(e);
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console.log('Write failed: ' + err);
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return cb('Fail to write:' + err);
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};
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if (lodash.isObject(v))
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v = JSON.stringify(v);
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if (!lodash.isString(v)) {
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v = v.toString();
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}
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$log.debug('Writing:', k, v);
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fileWriter.write(v);
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}, cb);
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});
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});
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};
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// See https://github.com/apache/cordova-plugin-file/#where-to-store-files
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root.getDir = function(cb) {
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if (!cordova.file) {
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return cb('Could not write on device storage');
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}
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var url = cordova.file.dataDirectory;
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// This could be needed for windows
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// if (cordova.file === undefined) {
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// url = 'ms-appdata:///local/';
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window.resolveLocalFileSystemURL(url, function(dir) {
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return cb(null, dir);
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}, function(err) {
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$log.warn(err);
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return cb(err || 'Could not resolve filesystem:' + url);
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});
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};
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root.remove = function(k, cb) {
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root.init(function(err, fs, dir) {
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if (err) return cb(err);
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dir.getFile(k, {
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create: false,
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}, function(fileEntry) {
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// Create a FileWriter object for our FileEntry (log.txt).
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fileEntry.remove(function() {
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console.log('File removed.');
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return cb();
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}, cb);
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}, cb);
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});
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};
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/**
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* Same as setItem, but fails if an item already exists
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*/
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root.create = function(name, value, callback) {
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root.get(name,
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function(err, data) {
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if (data) {
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return callback('EEXISTS');
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} else {
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return root.set(name, value, callback);
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}
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});
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};
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return root;
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});
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