Update directory structure

common/modules/main.js

@@ -0,0 +1,77 @@
+//
+//  main.js
+//  altsource-viewer (https://github.com/therealFoxster/altsource-viewer)
+//
+//  Copyright (c) 2023 Foxster.
+//  MIT License.
+//
+
+import { urlSearchParams, sourceURL } from "./constants.js";
+import { isValidHTTPURL, setTintColor, insertAltStoreBanner, setUpBackButton, open } from "./utilities.js";
+
+export function main(callback, fallbackURL = "../../") {
+    // If no source
+    if (!urlSearchParams.has('source')) {
+        open(fallbackURL);
+        return;
+    }
+    // If source is not a valid HTTP URL
+    else if (!isValidHTTPURL(sourceURL)) {
+        alert("Invalid HTTP URL.");
+        open(fallbackURL);
+        return;
+    }
+
+    var apps;
+    window.setApps = array =>
+        apps = array;
+    window.getAppWithBundleId = bundleId =>
+        apps?.find(app => app.bundleIdentifier == bundleId) ?? undefined;
+
+    setUpBackButton();
+
+    fetch(sourceURL)
+        .then(response => response.json())
+        .then(json => {
+            // Set tint color
+            const tintColor = json.tintColor?.replaceAll("#", "");
+            if (tintColor) setTintColor(tintColor);
+
+            insertAltStoreBanner(json.name);
+
+            setApps(json.apps);
+            // main(json);
+            callback(json);
+            waitForAllImagesToLoad();
+        })
+        .catch(error => console.error("An error occurred.", error));
+
+    function waitForAllImagesToLoad() {
+        const allImages = document.querySelectorAll("img");
+        var count = 0;
+
+        allImages.forEach(image => {
+            // New img element that won't be rendered to the DOM
+            var newImage = document.createElement("img");
+            // Attach load listener
+            newImage.addEventListener("load", loaded);
+            // Set src
+            newImage.src = image.src;
+
+            // Unable to load image
+            image.addEventListener("error", (event) => {
+                if (event.target.id == "app-icon") {
+                    event.target.src = "img/generic_app.jpeg";
+                } else event.target.remove()
+                loaded();
+            });
+        });
+
+        function loaded() {
+            if (++count == allImages.length) {
+                document.querySelector("body").classList.remove("loading");
+                document.getElementById("loading").remove();
+            }
+        }
+    }
+}