65 lines
1.9 KiB
JavaScript
65 lines
1.9 KiB
JavaScript
AFRAME.registerComponent('selfcontainer', {
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schema: {
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foo: { type:"string"}
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},
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init: async function () {
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this.installProxyServer()
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},
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events:{ },
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convert:{
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arrayBufferToBase64: function(buffer){
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let binary = '';
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const bytes = new Uint8Array(buffer);
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const len = bytes.byteLength;
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for (let i = 0; i < len; i++) binary += String.fromCharCode(bytes[i]);
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return window.btoa(binary);
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},
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base64ToArrayBuffer: function(base64) {
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const binaryString = window.atob(base64);
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const len = binaryString.length;
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const bytes = new Uint8Array(len);
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for (let i = 0; i < len; i++) {
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bytes[i] = binaryString.charCodeAt(i);
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}
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return bytes.buffer;
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}
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},
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installProxyServer: function(){
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if( !window.store ) window.store = {}
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// selfcontain every webrequest to store (and serve if stored)
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let curry = function(me){
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return function(request, response, cb){
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let data = request ? window.store[ request.url ] || false : false
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if( data ){ // return inline version
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console.log('selfcontained cache: '+request.url)
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let res = new Response()
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res[ data.binary ? 'data' : 'text' ] = data.binary ? () => me.convert.base64ToArrayBuffer(data.text) : data.text
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cb(res)
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}else{
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if( response.text ){
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data = {text: response.text}
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}else{
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data = {binary: true, text: me.convert.arrayBufferToBase64(response.data)}
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}
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window.store[ request.url ] = data
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let $store = document.querySelector('script#store')
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if( $store ) $store.remove
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document.head.innerHTML += `\n<`+`template id="store">\nwindow.store = ${JSON.stringify(window.store,null,2)}\n`+`<`+`/template>`
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cb(response);
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}
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});
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}
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xhook.after( curry(me) )
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}
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});
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