uptime-kuma/extra/exe-builder/DownloadForm.cs

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C#
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using System;
using System.Collections.Generic;
using System.ComponentModel;
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using System.Diagnostics;
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using System.IO;
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using System.IO.Compression;
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using System.Net;
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using System.Threading;
using System.Threading.Tasks;
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using System.Windows.Forms;
using Newtonsoft.Json;
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namespace UptimeKuma {
public partial class DownloadForm : Form {
private readonly Queue<DownloadItem> downloadQueue = new();
private readonly WebClient webClient = new();
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private DownloadItem currentDownloadItem;
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public DownloadForm() {
InitializeComponent();
}
private void DownloadForm_Load(object sender, EventArgs e) {
webClient.DownloadProgressChanged += DownloadProgressChanged;
webClient.DownloadFileCompleted += DownloadFileCompleted;
label.Text = "Reading latest version...";
// Read json from https://uptime.kuma.pet/version
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var versionJson = new WebClient().DownloadString("https://uptime.kuma.pet/version");
var versionObj = JsonConvert.DeserializeObject<Version>(versionJson);
var nodeVersion = versionObj.nodejs;
var uptimeKumaVersion = versionObj.latest;
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var hasUpdateFile = File.Exists("update");
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if (!Directory.Exists("node")) {
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downloadQueue.Enqueue(new DownloadItem {
URL = $"https://nodejs.org/dist/v{nodeVersion}/node-v{nodeVersion}-win-x64.zip",
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Filename = "node.zip",
TargetFolder = "node"
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});
}
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if (!Directory.Exists("core") || hasUpdateFile) {
// It is update, rename the core folder to core.old
if (Directory.Exists("core")) {
// Remove the old core.old folder
if (Directory.Exists("core.old")) {
Directory.Delete("core.old", true);
}
Directory.Move("core", "core.old");
}
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downloadQueue.Enqueue(new DownloadItem {
URL = $"https://github.com/louislam/uptime-kuma/archive/refs/tags/{uptimeKumaVersion}.zip",
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Filename = "core.zip",
TargetFolder = "core"
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});
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File.WriteAllText("version.json", versionJson);
// Delete the update file
if (hasUpdateFile) {
File.Delete("update");
}
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}
DownloadNextFile();
}
void DownloadNextFile() {
if (downloadQueue.Count > 0) {
var item = downloadQueue.Dequeue();
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currentDownloadItem = item;
// Download if the zip file is not existing
if (!File.Exists(item.Filename)) {
label.Text = item.URL;
webClient.DownloadFileAsync(new Uri(item.URL), item.Filename);
} else {
progressBar.Value = 100;
label.Text = "Use local " + item.Filename;
DownloadFileCompleted(null, null);
}
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} else {
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npmSetup();
}
}
void npmSetup() {
labelData.Text = "";
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var npm = "..\\node\\npm.cmd";
var cmd = $"{npm} ci --production & {npm} run download-dist & exit";
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var startInfo = new ProcessStartInfo {
FileName = "cmd.exe",
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Arguments = $"/k \"{cmd}\"",
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RedirectStandardOutput = false,
RedirectStandardError = false,
RedirectStandardInput = true,
UseShellExecute = false,
CreateNoWindow = false,
WorkingDirectory = "core"
};
var process = new Process();
process.StartInfo = startInfo;
process.EnableRaisingEvents = true;
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process.Exited += (_, e) => {
progressBar.Value = 100;
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if (process.ExitCode == 0) {
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Task.Delay(2000).ContinueWith(_ => {
Application.Restart();
});
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label.Text = "Done";
} else {
label.Text = "Failed, exit code: " + process.ExitCode;
}
};
process.Start();
label.Text = "Installing dependencies and download dist files";
progressBar.Value = 50;
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process.WaitForExit();
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}
void DownloadProgressChanged(object sender, DownloadProgressChangedEventArgs e) {
progressBar.Value = e.ProgressPercentage;
var total = e.TotalBytesToReceive / 1024;
var current = e.BytesReceived / 1024;
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if (total > 0) {
labelData.Text = $"{current}KB/{total}KB";
}
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}
void DownloadFileCompleted(object sender, AsyncCompletedEventArgs e) {
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Extract(currentDownloadItem);
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DownloadNextFile();
}
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void Extract(DownloadItem item) {
if (Directory.Exists(item.TargetFolder)) {
var dir = new DirectoryInfo(item.TargetFolder);
dir.Delete(true);
}
if (Directory.Exists("temp")) {
var dir = new DirectoryInfo("temp");
dir.Delete(true);
}
labelData.Text = $"Extracting {item.Filename}...";
ZipFile.ExtractToDirectory(item.Filename, "temp");
string[] dirList;
// Move to the correct level
dirList = Directory.GetDirectories("temp");
if (dirList.Length > 0) {
var dir = dirList[0];
// As sometime ExtractToDirectory is still locking the directory, loop until ok
while (true) {
try {
Directory.Move(dir, item.TargetFolder);
break;
} catch (Exception exception) {
Thread.Sleep(1000);
}
}
} else {
MessageBox.Show("Unexcepted Error: Cannot move extracted files, folder not found.");
}
labelData.Text = $"Extracted";
if (Directory.Exists("temp")) {
var dir = new DirectoryInfo("temp");
dir.Delete(true);
}
File.Delete(item.Filename);
}
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}
public class DownloadItem {
public string URL { get; set; }
public string Filename { get; set; }
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public string TargetFolder { get; set; }
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}
}