Implement Download Logic

extra/exe-builder/DownloadForm.cs

@@ -0,0 +1,65 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.IO;
+using System.Net;
+using System.Windows.Forms;
+
+namespace UptimeKuma {
+    public partial class DownloadForm : Form {
+        private readonly Queue<DownloadItem> downloadQueue = new();
+        private readonly WebClient webClient = new();
+
+        public DownloadForm() {
+            InitializeComponent();
+        }
+
+        private void DownloadForm_Load(object sender, EventArgs e) {
+            webClient.DownloadProgressChanged += DownloadProgressChanged;
+            webClient.DownloadFileCompleted += DownloadFileCompleted;
+
+            if (!File.Exists("node")) {
+                downloadQueue.Enqueue(new DownloadItem {
+                    URL = "https://nodejs.org/dist/v16.17.1/node-v16.17.1-win-x64.zip",
+                    Filename = "node.zip"
+                });
+            }
+
+            if (!File.Exists("node")) {
+                downloadQueue.Enqueue(new DownloadItem {
+                    URL = "https://github.com/louislam/uptime-kuma/archive/refs/tags/1.18.3.zip",
+                    Filename = "core.zip"
+                });
+            }
+
+            DownloadNextFile();
+        }
+
+        void DownloadNextFile() {
+            if (downloadQueue.Count > 0) {
+                var item = downloadQueue.Dequeue();
+                label.Text = item.URL;
+                webClient.DownloadFileAsync(new Uri(item.URL), item.Filename);
+            } else {
+                // TODO: Finished, extract?
+            }
+        }
+
+        void DownloadProgressChanged(object sender, DownloadProgressChangedEventArgs e) {
+            progressBar.Value = e.ProgressPercentage;
+            var total = e.TotalBytesToReceive / 1024;
+            var current = e.BytesReceived / 1024;
+            labelData.Text = $"{current}KB/{total}KB";
+        }
+
+        void DownloadFileCompleted(object sender, AsyncCompletedEventArgs  e) {
+            DownloadNextFile();
+        }
+    }
+
+    public class DownloadItem {
+        public string URL { get; set; }
+        public string Filename { get; set; }
+    }
+}
+