Support Postgres with non-standard version string

(cherry picked from commit 40f4ef27b22113c1dae0d0cbdee8205132bed68a)

Closes #5267

src/NzbDrone.Core.Test/Datastore/DatabaseVersionParserFixture.cs

@@ -0,0 +1,38 @@
+using FluentAssertions;
+using NUnit.Framework;
+using NzbDrone.Core.Datastore;
+
+namespace NzbDrone.Core.Test.Datastore;
+
+[TestFixture]
+public class DatabaseVersionParserFixture
+{
+    [TestCase("3.44.2", 3, 44, 2)]
+    public void should_parse_sqlite_database_version(string serverVersion, int majorVersion, int minorVersion, int buildVersion)
+    {
+        var version = DatabaseVersionParser.ParseServerVersion(serverVersion);
+
+        version.Should().NotBeNull();
+        version.Major.Should().Be(majorVersion);
+        version.Minor.Should().Be(minorVersion);
+        version.Build.Should().Be(buildVersion);
+    }
+
+    [TestCase("14.8 (Debian 14.8-1.pgdg110+1)", 14, 8, null)]
+    [TestCase("16.3 (Debian 16.3-1.pgdg110+1)", 16, 3, null)]
+    [TestCase("16.3 - Percona Distribution", 16, 3, null)]
+    [TestCase("17.0 - Percona Server", 17, 0, null)]
+    public void should_parse_postgres_database_version(string serverVersion, int majorVersion, int minorVersion, int? buildVersion)
+    {
+        var version = DatabaseVersionParser.ParseServerVersion(serverVersion);
+
+        version.Should().NotBeNull();
+        version.Major.Should().Be(majorVersion);
+        version.Minor.Should().Be(minorVersion);
+
+        if (buildVersion.HasValue)
+        {
+            version.Build.Should().Be(buildVersion.Value);
+        }
+    }
+}

src/NzbDrone.Core/Datastore/Database.cs

@@ -1,7 +1,7 @@
 using System;
 using System.Data;
+using System.Data.Common;
 using System.Data.SQLite;
-using System.Text.RegularExpressions;
 using Dapper;
 using NLog;
 using NzbDrone.Common.Instrumentation;
@@ -39,10 +39,9 @@ namespace NzbDrone.Core.Datastore
         {
             get
             {
-                using (var db = _datamapperFactory())
-                {
-                    return db is SQLiteConnection ? DatabaseType.SQLite : DatabaseType.PostgreSQL;
-                }
+                using var db = _datamapperFactory();
+
+                return db is SQLiteConnection ? DatabaseType.SQLite : DatabaseType.PostgreSQL;
             }
         }
 
@@ -50,24 +49,10 @@ namespace NzbDrone.Core.Datastore
         {
             get
             {
-                using (var db = _datamapperFactory())
-                {
-                    string version;
-
-                    try
-                    {
-                        version = db.QueryFirstOrDefault<string>("SHOW server_version");
+                using var db = _datamapperFactory();
+                var dbConnection = db as DbConnection;
 
-                        // Postgres can return extra info about operating system on version call, ignore this
-                        version = Regex.Replace(version, @"\(.*?\)", "");
-                    }
-                    catch
-                    {
-                        version = db.QueryFirstOrDefault<string>("SELECT sqlite_version()");
-                    }
-
-                    return new Version(version);
-                }
+                return DatabaseVersionParser.ParseServerVersion(dbConnection.ServerVersion);
             }
         }
 

src/NzbDrone.Core/Datastore/DatabaseVersionParser.cs

@@ -0,0 +1,16 @@
+using System;
+using System.Text.RegularExpressions;
+
+namespace NzbDrone.Core.Datastore;
+
+public static class DatabaseVersionParser
+{
+    private static readonly Regex VersionRegex = new (@"^[^ ]+", RegexOptions.Compiled);
+
+    public static Version ParseServerVersion(string serverVersion)
+    {
+        var match = VersionRegex.Match(serverVersion);
+
+        return match.Success ? new Version(match.Value) : null;
+    }
+}