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localstorage_array.js
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localstorage_array.js
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import { ApplicationSettings } from '@nativescript/core'
function multiDimensionalUnique(arr) {
var uniques = [];
var itemsFound = {};
for(var i = 0, l = arr.length; i < l; i++) {
var stringified = JSON.stringify(arr[i]);
if(itemsFound[stringified]) { continue; }
uniques.push(arr[i]);
itemsFound[stringified] = true;
}
return uniques;
}
export function LSget(index=null, distinct=false, xkey="lsakc"){
const appSettings = ApplicationSettings
if(!appSettings.hasKey(xkey)){
return {
"success" : false,
"message" : "Data not found!",
"data" : []
};
} else {
const arrData = JSON.parse(appSettings.getString(xkey));
if(index == null){
if(arrData.length != 0){
if(distinct){
return {
"success" : true,
"message" : "Data found.",
"data" : multiDimensionalUnique(arrData)
}
} else {
return {
"success" : true,
"message" : "Data found.",
"data" : arrData
}
}
} else {
return {
"success" : false,
"message" : "Data not found!",
"data" : []
}
}
} else {
if ( tmpdata[index] !== void 0 ) {
if(distinct){
return {
"success" : true,
"message" : "Data found.",
"data" : multiDimensionalUnique(arrData)[index]
}
} else {
return {
"success" : true,
"message" : "Data found.",
"data" : arrData[index]
}
}
} else {
return {
"success" : false,
"message" : "Index not found!",
"data" : []
}
}
}
}
}
export function LSinsert(data=[], xkey="lsakc"){
const appSettings = ApplicationSettings
if(data.length == 0 || Object.keys(data).length == 0){
return {
"success" : false,
"message" : "Data is null!",
"data" : data
}
} else {
if(!appSettings.hasKey(xkey)){
let tmp = []
tmp.push(data)
appSettings.setString(xkey, JSON.stringify(tmp))
return {
"success" : true,
"message" : "Data has been inserted!",
"data" : data
}
} else {
if(Array.isArray(data)){
let extractdata = JSON.parse(appSettings.getString(xkey))
let ma = data.concat(extractdata)
appSettings.remove(xkey)
appSettings.setString(xkey, JSON.stringify(ma))
} else {
let tmpdata = []
let extractdata = JSON.parse(appSettings.getString(xkey))
tmpdata.push(data)
let ma = tmpdata.concat(extractdata)
appSettings.remove(xkey)
appSettings.setString(xkey, JSON.stringify(ma))
}
return {
"success" : true,
"message" : "Data has been inserted.",
"data" : data
}
}
}
}
export function LSupdate(data={}, index=0, xkey="lsakc"){
const appSettings = ApplicationSettings
if(data.length == 0 || Object.keys(data).length == 0){
return {
"success" : false,
"message" : "Data is null!",
"data" : data
};
} else {
let tmpdata = []
let extractdata = JSON.parse(appSettings.getString(xkey))
for (let k = 0; k < extractdata.length; k++) {
tmpdata.push(extractdata[k])
}
if ( tmpdata[index] !== void 0 ) {
let newdata = [];
for (let i = 0; i < tmpdata.length; i++) {
if(tmpdata[i] != undefined || tmpdata[i] != "undefined"){
if(i === index){
newdata.push(data)
} else {
newdata.push(tmpdata[i])
}
} else {
newdata.push(data)
}
}
appSettings.remove(xkey)
appSettings.setString(xkey, JSON.stringify(newdata))
return {
"success" : true,
"message" : "Data has been updated.",
"data" : data
}
} else {
return {
"success" : false,
"message" : "Index not found!",
"data" : data
}
}
}
}
export function LSremove(index=0, xkey="lsakc"){
const appSettings = ApplicationSettings
if(!appSettings.hasKey(xkey)){
return {
"success" : false,
"message" : "Database not found!"
}
} else {
let tmpdata = []
let extractdata = JSON.parse(appSettings.getString(xkey))
for (let k = 0; k < extractdata.length; k++) {
tmpdata.push(extractdata[k])
}
if ( tmpdata[index] !== void 0 ) {
let newdata = [];
for (let i = 0; i < tmpdata.length; i++) {
if(tmpdata[i] != undefined || tmpdata[i] != "undefined"){
if(i !== index){
newdata.push(tmpdata[i])
}
}
}
appSettings.remove(xkey)
appSettings.setString(xkey, JSON.stringify(newdata))
return {
"success" : true,
"message" : "Data has been deleted."
}
} else {
return {
"success" : false,
"message" : "Index not found!"
}
}
}
}
export function LSdrop(xkey="lsakc"){
const appSettings = ApplicationSettings
if(!appSettings.hasKey(xkey)){
return {
"success" : false,
"message" : "Storage not found!"
}
} else {
appSettings.remove(xkey);
return {
"success" : true,
"message" : "Storage has been dropped."
}
}
}