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yallajs-indexeddb.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Indexed DB Admin with yallajs</title>
<script src="src/yalla.js"></script>
</head>
<body>
</body>
<script>
let context = new Context();
let {html, htmlCollection} = context;
const addTable = (version) => {
config.tables.push({
id: uuidv4(),
version: version,
name: '',
fields: [{
id: uuidv4(),
name: '',
type: 'string', // numbers, strings, boolean, date, datetime, array, object
mandatory: false,
unique: false
}]
});
update();
};
const addColumn = (table) => {
table.fields.push({
id: uuidv4(),
name: '',
type: 'string', // numbers, strings, boolean, date, datetime, array, object
mandatory: false,
unique: false
});
update();
};
const deleteColumn = (table, fieldIndex) => {
if (confirm('Are you sure you want to delete this field ?')) {
table.fields.splice(fieldIndex, 1);
update();
}
};
const onFieldChange = (field, property, value) => {
field[property] = value;
update();
return false;
};
const onTypeChange = (field, value) => {
field.type = value;
field.mandatory = false;
field.unique = false;
update();
return false;
};
const cleanAndChangeToDash = (e) => {
let text = e.target.value;
if (text) {
return text.split(' ').join('_').split('-').join('_');
}
return '';
};
let config = {
globalName : 'db',
database: '',
version: 1,
tables: [{
id: uuidv4(),
version: 1,
name: '',
fields: [{
id: uuidv4(),
name: '',
type: 'string', // numbers, strings, boolean, date, datetime, array, object
mandatory: false,
unique: false
}]
}]
};
const downloadScript = () => {
let a = document.createElement('a');
let file = new Blob([generateScript(config)], {type: 'text/plain'});
a.href = URL.createObjectURL(file);
a.download = 'database.js';
a.click();
};
const uploadScript = (event) => {
let file = event.target.files[0];
let reader = new FileReader();
reader.onload = function(){
let javascriptCode = reader.result;
let startCode = 'const DB = ';
let endCode = '//end-code';
let code = 'window.DB = '+javascriptCode.substring(javascriptCode.indexOf(startCode)+startCode.length,(javascriptCode.indexOf(endCode)));
eval(code);
config = window.DB.config;
config.version = config.version + 1;
update();
};
reader.readAsText(file);
};
const apiToDisplay = [];
const toggleApi = (table) => {
let indexOfApi = apiToDisplay.indexOf(table);
if(indexOfApi >= 0){
apiToDisplay.splice(indexOfApi,1);
}else{
apiToDisplay.push(table);
}
update();
return false;
};
const deleteTable = (table) => {
if (confirm(`Are you sure you want to delete table "${table.name}" ?`)) {
config.tables.splice(config.tables.indexOf(table),1);
update();
}
return false;
};
const getSampleField = (field) => {
switch (field.type){
case 'string' : {
return 'xxxxx xxx';
}
case 'number' : {
return Math.round(Math.random() * 10000);
}
case 'date' : {
return new Date();
}
case 'date_time' : {
return new Date();
}
case 'boolean' : {
return true;
}
case 'array' : {
return [uuidv4(),uuidv4(),uuidv4()];
}
case 'object' : {
return {
name : 'xxxx xxxx',
age : 36
};
}
}
return '';
};
const generateScript = (config) => `
window.indexedDB = window.indexedDB || window.mozIndexedDB || window.webkitIndexedDB || window.msIndexedDB;
window.IDBTransaction = window.IDBTransaction || window.webkitIDBTransaction || window.msIDBTransaction || {READ_WRITE:"readwrite"};
window.IDBKeyRange = window.IDBKeyRange || window.webkitIDBKeyRange || window.msIDBKeyRange;
const uuidv4 = () => {
return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, function(c) {
var r = Math.random() * 16 | 0, v = c == 'x' ? r : (r & 0x3 | 0x8);
return v.toString(16);
});
}
const DB = {
config : ${JSON.stringify(config, null, 4)},
open : function (){
let config = this.config;
return new Promise(function(resolve,reject){
let request = window.indexedDB.open(config.database,config.version);
request.onerror = function(event){
reject(true);
}
request.onupgradeneeded = function(event){
let currentVersion = config.version;
let db = event.target.result;
for(let version = event.oldVersion; version <= currentVersion;version++){
config.tables.filter(table => {
return table.version == version;
}).forEach((table)=>{
let objectStore = db.createObjectStore(table.name, {keyPath : '$id'});
table.fields.forEach(field => {
objectStore.createIndex(field.name,field.name,{unique:field.unique});
});
})
}
}
request.onsuccess = function(event){
let db = event.target.result;
let handler = {
get (db,key){
return {
filter : function(filterFunction){
return new Promise((resolve,reject) => {
let objectStore = db.transaction(key).objectStore(key);
let cursor = objectStore.openCursor();
let results = [];
cursor.onsuccess = function(event) {
var cursor = event.target.result;
if (cursor && filterFunction.apply(null,[cursor.value])) {
results.push(cursor.value);
cursor.continue();
}else {
resolve(results);
}
};
cursor.onerror = function(event){
reject(event);
}
});
},
get : function(id){
return new Promise((resolve,reject) => {
let request = db.transaction(key).objectStore(key).get(id);
request.onsuccess = function(event) {
resolve(event.target.result);
};
request.onerror = function(event) {
reject(event);
};
});
},
save : function(item){
item.$id = item.$id || uuidv4();
return new Promise((resolve,reject) => {
let request = db.transaction(key,'readwrite').objectStore(key).put(item);
request.onsuccess = function(event) {
resolve(item);
};
request.onerror = function(event) {
reject(event);
};
});
},
delete : function(id){
return new Promise((resolve,reject) => {
let request = db.transaction(key, "readwrite").objectStore(key).delete(id);
request.onsuccess = function(event) {
resolve(true);
};
request.onerror = function(event){
reject(event);
}
});
},
}
}
};
resolve(new Proxy(db,handler));
}
});
}
}
//end-code
DB.open().then(db => window.${config.globalName} = db);
`;
const generateTableForm = () => {
return htmlCollection(config.tables, 'id', (table, index) => {
return html`
<div class="table-header">
<input type="text" placeholder="Enter Table Name" class="table-name" onkeyup="${e => {
table.name = cleanAndChangeToDash(e);
update();
}}" value="${table.name}" >
<button class="toogle-api-button" onclick="${e => toggleApi(table)}">Toggle API</button>
<button class="delete-table-button" onclick="${e => deleteTable(table)}">Delete</button>
<div class="column-container">
${htmlCollection(table.fields, i => i.id, (field, index, array)=> {
return html`
<div class="column">
<div class="field">
<input type="text" name="${table.name}-${index}-name" placeholder="Enter Column Name" value="${field.name}" onkeyup="${e => onFieldChange(field, 'name', cleanAndChangeToDash(e))}" >
</div>
<div class="field">
<select name="${table.name}-${index}-type" onchange="${e => onTypeChange(field, cleanAndChangeToDash(e))}">
<option value="string">String</option>
<option value="number">Number</option>
<option value="boolean">Boolean</option>
<option value="array">Array</option>
<option value="date">Date</option>
<option value="date-time">Date Time</option>
<option value="object">Object</option>
</select>
</div>
${['number', 'string'].indexOf(field.type) >= 0 ? html`
<div class="field">
<input type="checkbox" name="${table.name}-${index}-unique" onchange="${e => onFieldChange(field, 'unique', e.target.checked)}" checked="${field.unique}">
<label>Unique</label>
</div>
<span/>
` : ''}
${!field.unique ? html`
<div class="field">
<input type="checkbox" name="${table.name}-${index}-mandatory" onchange="${e => onFieldChange(field, 'mandatory', e.target.checked)}" checked="${field.mandatory}">
<label >Mandatory</label>
</div>` : ''}
${table.fields.length > 1 ? html`
<button class="delete-button" onclick="${e => {
deleteColumn(table, index);
return false;
}}">Delete</button>
` : ''}
</div>
`
})}
<div class="column" style="border:none">
<button class="add-column" onclick="${e => {
addColumn(table);
return false;
}}">Add Column</button>
</div>
</div>
<div class="column-container" style="border-top:none;display:${apiToDisplay.indexOf(table)>=0 ? 'flex' : 'none'};overflow:auto">
<div style="flex : 1 1 auto;border-right:1px solid #CCC;padding : 5px;">
<pre style="margin:0px;">
${config.globalName}.${table.name}
.get('123').
then(function(success){
if(success){
}
})
</pre>
</div>
<div style="flex : 1 1 auto;border-right:1px solid #CCC;padding : 5px;">
<pre style="margin:0px;">
${config.globalName}.${table.name}
.save(${ JSON.stringify(table.fields.reduce((result,field)=>{
result[field.name] = getSampleField(field);
return result;
},{}),null,8).replace(/\"([^(\")"]+)\":/g,"$1:") })
.then(function(success){
if(success){
}
})
</pre>
</div>
<div style="flex : 1 1 auto;border-right:1px solid #CCC;padding : 5px;">
<pre style="margin:0px;">
${config.globalName}.${table.name}
.delete(item.$id)
.then(function(success){
if(success){
}
})
</pre>
</div>
<div style="flex : 1 1 auto;padding : 5px;">
<pre style="margin:0px;">
${config.globalName}.${table.name}
.filter(item => {
return item.xxx == 'xxx';
})
.then(function(items){
});
</pre>
</div>
</div>
</div>
`
})
};
const update = () => {
render(html`
<style>
form, input, select {
font-size:13px;
font-family : Arial, Helvetica;
}
button {
font-size:12px;
border : none;
padding : 5px;
background-color:#EEE;
border:1px solid #DDD;
}
button:hover{
background-color : #BCD3FF;
}
input, select {
border : none;
border-bottom : 1px solid #DDD;
color : #666;
}
input:focus, select:focus {
outline : none;
background-color : #FCFDD5;
}
input[type="checkbox" i] {
padding : 5px;
margin : 0px;
margin-left : 5px;
margin-top : 5px;
background-color:#EEE;
width : 12px;
height : 12px;
border-radius : 6px;
border : 1px solid #DDD;
-webkit-appearance: none;
}
input[type="checkbox" i]:focus {
background-color:#FCFDD5;
}
input[type="checkbox" i]:checked {
background-color:#7DDA95;
border:1px solid #5CA66F;
}
button:focus{
outline : none;
border: 1px solid #6F99D1;
}
input {
padding-left : 4px;
}
.database-label{
display: inline-block;
width: 120px;
font-weight: bold;
}
.database-input{
display: inline-block;
width: calc(100% - 5px);
padding-top : 5px;
border : none;
font-size:1.8em;
}
.database-input::placeholder{
color:red;
}
.field label {
display: inline-block;
}
.field input[type="text"] {
width: calc(100% - 4px);
font-weight:bold;
padding-top:5px;
padding-bottom:5px;
}
.field input[type="text"]::placeholder {
color : red;
}
.field select{
width: 100%;
color : #666;
}
.table-name{
width: calc(100% - 6px);
font-size: 1.4em;
margin-top:5px;
background-color:#EFEFEF;
padding-top : 5px;
padding-bottom : 5px;
border : 1px solid #DDD;
border-bottom : none;
}
.table-name::placeholder{
color : red;
}
.column{
display: inline-block;
vertical-align: top;
margin-top: 0px;
border-right : 1px solid #DDD;
border-bottom : 1px solid #DDD;
position:relative;
height : 110px;
}
.add-column{
margin:5px;
}
.column-container{
border : 1px solid #DDD;
display : flex-wrap;
}
pre {
font-size:0.9em;
}
.delete-button{
position : absolute;
bottom : 5px;
right : 5px;
}
hr {
border : none;
border-bottom : 1px solid #DDD;
}
.container {
display : flex;
}
.table-header{
position : relative;
}
.toogle-api-button{
position: absolute;
top : 8px;
right : 5px;
background-color: #FFF;
}
.delete-table-button{
position: absolute;
top : 8px;
right : 72px;
background-color: #FFF;
color : red;
}
</style>
<div>
<label style="font-size:0.8em;padding-left:5px;font-weight:bold">Global Constant Name :</label>
<input type="text" placeholder="Enter Global Name" value="${config.globalName}" style="width: 130px;" onkeyup="${e => {config.globalName = cleanAndChangeToDash(e);update();}}"/>
<form>
<div>
<input class="database-input" type="text" name="database" value="${config.database}" onkeyup="${e => {
config.database = cleanAndChangeToDash(e);
update()
}}" placeholder="Enter Database Name">
</div>
<hr>
${generateTableForm()}
</form>
<p>
<input type="file" onchange="${e => uploadScript(e)}" style="display: none" id="inputFile">
<button onclick="${e => {document.getElementById('inputFile').click() }}">Upload IndexDB configuration</button>
<button onclick="${e => downloadScript()}">Generate IndexDB configuration</button>
<button onclick="${e => {
addTable(config.version);
return false;
}}">Add Table</button>
</p>
</div>
`, document.body);
};
update();
</script>
</html>