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Add AppDbUpdater

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This commit is contained in:
Lorenz Stechauner
2023-09-17 20:48:07 +02:00
parent dc215d3350
commit 24b7078a05
3 changed files with 111 additions and 20 deletions
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43
Elwig/App.xaml.cs
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@ -11,6 +11,7 @@ using System.Windows.Threading;
using System.Globalization;
using System.Threading;
using System.Windows.Markup;
using System.Reflection;
namespace Elwig {
public partial class App : Application {
@ -20,10 +21,23 @@ namespace Elwig {
public static readonly string TempPath = Path.Combine(Path.GetTempPath(), "Elwig");
public static readonly Config Config = new(DataPath + "config.ini");
public static int VersionMajor { get; private set; }
public static int VersionMinor { get; private set; }
public static int VersionPatch { get; private set; }
public static string Version {
get => $"{VersionMajor}.{VersionMinor}.{VersionPatch}";
private set {
var p = value.Split(".").Select(p => int.Parse(p.Trim())).ToArray();
VersionMajor = p.ElementAtOrDefault(0);
VersionMinor = p.ElementAtOrDefault(1);
VersionPatch = p.ElementAtOrDefault(2);
}
}
public static string ZwstId { get; private set; }
public static string BranchName { get; private set; }
public static int? BranchPlz { get; private set; }
public static string? BranchOrt { get; private set; }
public static string? BranchLocation { get; private set; }
public static string? BranchAddress { get; private set; }
public static string? BranchPhoneNr { get; private set; }
public static string? BranchFaxNr { get; private set; }
@ -36,7 +50,7 @@ namespace Elwig {
public App() : base() {
System.Text.Encoding.RegisterProvider(System.Text.CodePagesEncodingProvider.Instance);
Directory.CreateDirectory(App.TempPath);
Directory.CreateDirectory(TempPath);
Directory.CreateDirectory(DataPath);
MainDispatcher = Dispatcher;
Scales = Array.Empty<IScale>();
@ -56,14 +70,18 @@ namespace Elwig {
new FrameworkPropertyMetadata(XmlLanguage.GetLanguage(CultureInfo.CurrentCulture.IetfLanguageTag))
);
Dictionary<string, (string, string, int?, string?, string?, string?, string?, string?)> branches = new();
using (var ctx = new AppDbContext()) {
Version = typeof(App).GetTypeInfo().Assembly.GetCustomAttribute<AssemblyInformationalVersionAttribute>()?.InformationalVersion ?? "";
try {
if (!ctx.Database.CanConnect()) {
MessageBox.Show($"Invalid Database:\n\n{Config.DatabaseFile}", "Invalid Database", MessageBoxButton.OK, MessageBoxImage.Error);
AppDbUpdater.CheckDb();
} catch (Exception e) {
MessageBox.Show($"Invalid Database:\n\n{e.Message}", "Invalid Database", MessageBoxButton.OK, MessageBoxImage.Error);
Shutdown();
return;
} else {
}
Dictionary<string, (string, string, int?, string?, string?, string?, string?, string?)> branches = new();
using (var ctx = new AppDbContext()) {
branches = ctx.Branches.ToDictionary(b => b.Name.ToLower(), b => (b.ZwstId, b.Name, b.PostalDest?.AtPlz?.Plz, b.PostalDest?.AtPlz?.Dest, b.Address, b.PhoneNr, b.FaxNr, b.MobileNr));
try {
Client = new(ctx);
@ -73,12 +91,7 @@ namespace Elwig {
return;
}
}
} catch (Exception e) {
MessageBox.Show($"Invalid Database:\n\n{e.Message}", "Invalid Database", MessageBoxButton.OK, MessageBoxImage.Error);
Shutdown();
return;
}
}
Utils.RunBackground("HTML Initialization", () => Documents.Html.Init(PrintingReadyChanged));
Utils.RunBackground("PDF Initialization", () => Documents.Pdf.Init(PrintingReadyChanged));
@ -114,7 +127,7 @@ namespace Elwig {
ZwstId = entry.Item1;
BranchName = entry.Item2;
BranchPlz = entry.Item3;
BranchOrt = entry.Item4;
BranchLocation = entry.Item4;
BranchAddress = entry.Item5;
BranchPhoneNr = entry.Item6;
BranchFaxNr = entry.Item7;
@ -125,7 +138,7 @@ namespace Elwig {
ZwstId = entry.Item1;
BranchName = entry.Item2;
BranchPlz = entry.Item3;
BranchOrt = entry.Item4;
BranchLocation = entry.Item4;
BranchAddress = entry.Item5;
BranchPhoneNr = entry.Item6;
BranchFaxNr = entry.Item7;

2
Elwig/Documents/BusinessDocument.cshtml.cs
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@ -13,7 +13,7 @@ namespace Elwig.Documents {
public BusinessDocument(string title, Member m, bool includeSender = false) : base(title) {
Member = m;
Location = App.BranchName;
Location = App.BranchLocation;
IncludeSender = includeSender;
var uid = (m.UstIdNr ?? "-") + (m.IsBuchführend ? "" : " <i>(pauschaliert)</i>");
Aside = $"<table><colgroup><col span='1' style='width: 22.5mm;'/><col span='1' style='width: 42.5mm;'/></colgroup>" +

78
Elwig/Helpers/AppDbUpdater.cs Normal file
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@ -0,0 +1,78 @@
using Microsoft.Data.Sqlite;
using System;
namespace Elwig.Helpers {
public static class AppDbUpdater {
public static readonly int RequiredSchemaVersion = 1;
private static int _versionOffset = 0;
private static readonly Action<SqliteConnection>[] _updaters = new[] {
UpdateDbSchema_1_To_2, UpdateDbSchema_2_To_3
};
private static void ExecuteNonQuery(SqliteConnection cnx, string sql) {
using var cmd = cnx.CreateCommand();
cmd.CommandText = sql;
cmd.ExecuteNonQuery();
}
private static object? ExecuteScalar(SqliteConnection cnx, string sql) {
using var cmd = cnx.CreateCommand();
cmd.CommandText = sql;
return cmd.ExecuteScalar();
}
public static string CheckDb() {
using var cnx = AppDbContext.Connect();
var applId = (long?)ExecuteScalar(cnx, "PRAGMA application_id") ?? 0;
if (applId != 0x454C5747) throw new Exception("Invalid application_id of database");
var schemaVers = (long?)ExecuteScalar(cnx, "PRAGMA schema_version") ?? 0;
_versionOffset = (int)(schemaVers % 100);
if (_versionOffset != 0) {
// schema was modified manually/externally
// TODO issue warning
}
UpdateDbSchema(cnx, (int)(schemaVers / 100), RequiredSchemaVersion);
var userVers = (long?)ExecuteScalar(cnx, "PRAGMA user_version") ?? 0;
var major = userVers >> 24;
var minor = (userVers >> 16) & 0xFF;
var patch = userVers & 0xFFFF;
if (App.VersionMajor > major || App.VersionMinor > minor || App.VersionPatch > patch) {
long vers = (App.VersionMajor << 24) | (App.VersionMinor << 16) | App.VersionPatch;
ExecuteNonQuery(cnx, $"PRAGMA user_version = {vers}");
}
return $"{major}.{minor}.{patch}";
}
private static void UpdateDbSchema(SqliteConnection cnx, int fromVersion, int toVersion) {
if (fromVersion == toVersion) {
return;
} else if (fromVersion > toVersion) {
throw new Exception("schema_version of database is too new");
} else if (toVersion - 1 > _updaters.Length) {
throw new Exception("Unable to update database schema: Updater not implemented");
} else if (fromVersion <= 0) {
throw new Exception("schema_version of database is invalid");
}
ExecuteNonQuery(cnx, "PRAGMA locking_mode = EXCLUSIVE");
ExecuteNonQuery(cnx, "BEGIN EXCLUSIVE");
for (int i = fromVersion; i < toVersion; i++) {
_updaters[i - 1](cnx);
}
ExecuteNonQuery(cnx, "COMMIT");
ExecuteNonQuery(cnx, "VACUUM");
ExecuteNonQuery(cnx, $"PRAGMA schema_version = {toVersion * 100 + _versionOffset}");
}
private static void UpdateDbSchema_1_To_2(SqliteConnection cnx) { }
private static void UpdateDbSchema_2_To_3(SqliteConnection cnx) { }
}
}