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using System.Collections.Generic;
using System.IO;
using Duplicati.Library.Main;
using Duplicati.Library.Main.Database;
using Duplicati.Library.SQLiteHelper;
using System.Threading.Tasks;
using NUnit.Framework;

namespace Duplicati.UnitTest;

[TestFixture]
public class MetadataContentInDatabaseTests : BasicSetupHelper
{
    private static long CountMetadatasetsWithContent(string dbPath)
    {
        using var db = SQLiteLoader.LoadConnection(dbPath);
        using var cmd = db.CreateCommand();

        return cmd.ExecuteScalarInt64(@"
            SELECT COUNT(*)
            FROM ""Metadataset""
            WHERE ""Content"" IS NOT NULL AND ""Content"" != ''
        ");
    }

    [Test]
    public async Task Backup_StoresMetadataContent_WhenOptionEnabledAsync()
    {
        var options = new Dictionary<string, string>(this.TestOptions)
        {
            ["no-encryption"] = "true",
            ["store-metadata-content-in-database"] = "true"
        };

        Directory.CreateDirectory(Path.Combine(this.DATAFOLDER, "folder"));
        File.WriteAllText(Path.Combine(this.DATAFOLDER, "folder", "file.txt"), "data");

        using (var c = new Controller("file://" + this.TARGETFOLDER, options, null))
            TestUtils.AssertResults(await c.BackupAsync([this.DATAFOLDER]));

        Assert.That(CountMetadatasetsWithContent(options["dbpath"]), Is.GreaterThan(0));
    }

    [Test]
    public async Task Recreate_StoresMetadataContent_WhenOptionEnabledAsync()
    {
        var options = new Dictionary<string, string>(this.TestOptions)
        {
            ["no-encryption"] = "true",
            ["store-metadata-content-in-database"] = "true"
        };

        Directory.CreateDirectory(Path.Combine(this.DATAFOLDER, "folder"));
        File.WriteAllText(Path.Combine(this.DATAFOLDER, "folder", "file.txt"), "data");

        using (var c = new Controller("file://" + this.TARGETFOLDER, options, null))
            TestUtils.AssertResults(await c.BackupAsync([this.DATAFOLDER]));

        // Force a recreate by deleting the local database.
        File.Delete(options["dbpath"]);

        using (var c = new Controller("file://" + this.TARGETFOLDER, options, null))
            TestUtils.AssertResults(await c.RepairAsync());

        Assert.That(CountMetadatasetsWithContent(options["dbpath"]), Is.GreaterThan(0));
    }
}