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Discord-History-Tracker/app/Desktop/Main/Pages/DatabasePageModel.cs
2022-02-21 22:27:29 +01:00

158 lines
4.5 KiB
C#

using System;
using System.Diagnostics;
using System.IO;
using System.Text;
using System.Threading.Tasks;
using Avalonia.Controls;
using DHT.Desktop.Common;
using DHT.Desktop.Dialogs.Message;
using DHT.Desktop.Dialogs.Progress;
using DHT.Server.Database;
using DHT.Server.Service;
using DHT.Utils.Logging;
using DHT.Utils.Models;
namespace DHT.Desktop.Main.Pages {
sealed class DatabasePageModel : BaseModel {
private static readonly Log Log = Log.ForType<DatabasePageModel>();
public IDatabaseFile Db { get; }
public event EventHandler? DatabaseClosed;
private readonly Window window;
[Obsolete("Designer")]
public DatabasePageModel() : this(null!, DummyDatabaseFile.Instance) {}
public DatabasePageModel(Window window, IDatabaseFile db) {
this.window = window;
this.Db = db;
}
public async void OpenDatabaseFolder() {
string file = Db.Path;
string? folder = Path.GetDirectoryName(file);
if (folder == null) {
return;
}
switch (Environment.OSVersion.Platform) {
case PlatformID.Win32NT:
Process.Start("explorer.exe", "/select,\"" + file + "\"");
break;
case PlatformID.Unix:
Process.Start("xdg-open", new string[] { folder });
break;
case PlatformID.MacOSX:
Process.Start("open", new string[] { folder });
break;
default:
await Dialog.ShowOk(window, "Feature Not Supported", "This feature is not supported for your operating system.");
break;
}
}
public async void MergeWithDatabase() {
var fileDialog = DatabaseGui.NewOpenDatabaseFileDialog();
fileDialog.Directory = Path.GetDirectoryName(Db.Path);
fileDialog.AllowMultiple = true;
string[]? paths = await fileDialog.ShowAsync(window);
if (paths == null || paths.Length == 0) {
return;
}
ProgressDialog progressDialog = new ProgressDialog();
progressDialog.DataContext = new ProgressDialogModel(async callback => await MergeWithDatabaseFromPaths(Db, paths, progressDialog, callback)) {
Title = "Database Merge"
};
await progressDialog.ShowDialog(window);
}
public void CloseDatabase() {
ServerLauncher.Stop();
DatabaseClosed?.Invoke(this, EventArgs.Empty);
}
private static async Task MergeWithDatabaseFromPaths(IDatabaseFile target, string[] paths, ProgressDialog dialog, IProgressCallback callback) {
int total = paths.Length;
DialogResult.YesNo? upgradeResult = null;
async Task<bool> CheckCanUpgradeDatabase() {
upgradeResult ??= total > 1
? await DatabaseGui.ShowCanUpgradeMultipleDatabaseDialog(dialog)
: await DatabaseGui.ShowCanUpgradeDatabaseDialog(dialog);
return DialogResult.YesNo.Yes == upgradeResult;
}
var oldStatistics = target.Statistics.Clone();
int successful = 0;
int finished = 0;
foreach (string path in paths) {
await callback.Update(Path.GetFileName(path), finished, total);
++finished;
if (!File.Exists(path)) {
await Dialog.ShowOk(dialog, "Database Error", "Database '" + Path.GetFileName(path) + "' no longer exists.");
continue;
}
IDatabaseFile? db = await DatabaseGui.TryOpenOrCreateDatabaseFromPath(path, dialog, CheckCanUpgradeDatabase);
if (db == null) {
continue;
}
try {
target.AddFrom(db);
} catch (Exception ex) {
Log.Error(ex);
await Dialog.ShowOk(dialog, "Database Error", "Database '" + Path.GetFileName(path) + "' could not be merged: " + ex.Message);
continue;
} finally {
db.Dispose();
}
++successful;
}
await callback.Update("Done", finished, total);
if (successful == 0) {
await Dialog.ShowOk(dialog, "Database Merge", "Nothing was merged.");
return;
}
var newStatistics = target.Statistics;
long newServers = newStatistics.TotalServers - oldStatistics.TotalServers;
long newChannels = newStatistics.TotalChannels - oldStatistics.TotalChannels;
long newMessages = newStatistics.TotalMessages - oldStatistics.TotalMessages;
StringBuilder message = new StringBuilder();
message.Append("Processed ");
if (successful == total) {
message.Append(successful.Pluralize("database file"));
}
else {
message.Append(successful.Format()).Append(" out of ").Append(total.Pluralize("database file"));
}
message.Append(" and added:\n\n \u2022 ");
message.Append(newServers.Pluralize("server")).Append("\n \u2022 ");
message.Append(newChannels.Pluralize("channel")).Append("\n \u2022 ");
message.Append(newMessages.Pluralize("message"));
await Dialog.ShowOk(dialog, "Database Merge", message.ToString());
}
}
}