refactored server to break out into node modules

client/utils.js

@@ -0,0 +1,101 @@
+function getOriginalImagePath(pinId){
+    if ( !pinId ){
+        return "";
+    }
+    let paddedId = pinId.toString().padStart(12, '0');
+    let dir = `images/o/${paddedId[11]}/${paddedId[10]}/${paddedId[9]}/${paddedId[8]}`;
+    let file = `${dir}/${paddedId}.jpg`;
+    return file;
+}
+
+function getImagePath(pinId, size){
+    if ( !pinId ){
+        return "";
+    }
+
+    let paddedId = pinId.toString().padStart(12, '0');
+    let dir = `images/${size}/${paddedId[11]}/${paddedId[10]}/${paddedId[9]}/${paddedId[8]}`;
+    let file = `${dir}/${paddedId}.jpg`;
+    return file;
+}
+
+function parseQueryString(qs){
+    let obj = {};
+    let parts = qs.split("&");
+    for ( let i = 0; i < parts.length; ++i ){
+        let kv = parts[i].split("=");
+        if ( kv.length == 2 ){
+            let key = decodeURIComponent(kv[0]);
+            let value = decodeURIComponent(kv[1]);
+            obj[key] = value;
+        }
+    }
+    return obj;
+}
+
+function getBoardIndexById(id){
+    let idx = -1;
+    for ( let i = 0; i < store.data.boards.length; ++i ){
+        if ( store.data.boards[i].id == id ){
+            idx = i;
+        }
+    }
+    return idx;
+}
+
+function getBoardById(id){
+    return store.data.boards[getBoardIndexById(id)];
+}
+
+function getPinIndexById(id){
+    let idx = -1;
+    for ( let i = 0; i < store.data.board.pins.length; ++i ){
+        if ( store.data.board.pins[i].id == id ){
+            idx = i;
+        }
+    }
+    return idx;
+}
+
+function getPinById(id){
+    return store.data.board.pins[getPinIndexById(id)];
+}
+
+async function sleep(ms){ return new Promise((resolve) => setTimeout(resolve, ms)); }
+
+// async function runAfter(f, ms){
+//     return new Promise( (resolve,reject) => {
+//         setTimeout( () => {
+//             try {
+//                 await f();
+//                 resolve();
+//             } catch (e){
+//                 reject(e);
+//             }
+//         }, ms);
+//     });
+// }
+
+// feature detection
+if ( 'ontouchstart' in window ){
+    window.isTouch = true;
+    document.body.classList.add("is-touch");
+}
+
+if ([
+      'iPad Simulator',
+      'iPhone Simulator',
+      'iPod Simulator',
+      'iPad',
+      'iPhone',
+      'iPod'
+    ].includes(navigator.platform)
+    // iPad on iOS 13 detection
+    || (navigator.userAgent.includes("Mac") && "ontouchend" in document) ){
+
+
+    window.iOS = true;
+    document.body.classList.add("is-ios");
+} else {
+    window.iOS = false;
+}