Sort by Average Rating and Big Want to Read fix (#2672)

API/Data/ManualMigrations/MigrateWantToReadExport.cs

@@ -0,0 +1,81 @@
+using System.Globalization;
+using System.IO;
+using System.Threading.Tasks;
+using API.Services;
+using CsvHelper;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.Extensions.Logging;
+
+namespace API.Data.ManualMigrations;
+
+
+/// <summary>
+/// v0.7.13.12/v0.7.14 - Want to read is extracted and saved in a csv
+/// </summary>
+/// <remarks>This must run BEFORE any DB migrations</remarks>
+public static class MigrateWantToReadExport
+{
+    public static async Task Migrate(DataContext dataContext, IDirectoryService directoryService, ILogger<Program> logger)
+    {
+        logger.LogCritical(
+            "Running MigrateWantToReadExport migration - Please be patient, this may take some time. This is not an error");
+
+        var columnExists = false;
+        await using var command = dataContext.Database.GetDbConnection().CreateCommand();
+        command.CommandText = "PRAGMA table_info('Series')";
+
+        await dataContext.Database.OpenConnectionAsync();
+        await using var result = await command.ExecuteReaderAsync();
+        while (await result.ReadAsync())
+        {
+            var columnName = result["name"].ToString();
+            if (columnName != "AppUserId") continue;
+
+            logger.LogInformation("Column 'AppUserId' exists in the 'Series' table. Running migration...");
+            // Your migration logic here
+            columnExists = true;
+            break;
+        }
+
+        await result.CloseAsync();
+
+        if (!columnExists)
+        {
+            logger.LogCritical(
+                "Running MigrateWantToReadExport migration - Completed. This is not an error");
+            return;
+        }
+
+        await using var command2 = dataContext.Database.GetDbConnection().CreateCommand();
+        command.CommandText = "Select AppUserId, Id from Series WHERE AppUserId IS NOT NULL ORDER BY AppUserId;";
+
+        await dataContext.Database.OpenConnectionAsync();
+        await using var result2 = await command.ExecuteReaderAsync();
+
+        await using var writer = new StreamWriter(Path.Join(directoryService.ConfigDirectory, "want-to-read-migration.csv"));
+        await using var csvWriter = new CsvWriter(writer, CultureInfo.InvariantCulture);
+
+        // Write header
+        csvWriter.WriteField("AppUserId");
+        csvWriter.WriteField("Id");
+        await csvWriter.NextRecordAsync();
+
+        // Write data
+        while (await result2.ReadAsync())
+        {
+            var appUserId = result2["AppUserId"].ToString();
+            var id = result2["Id"].ToString();
+
+            csvWriter.WriteField(appUserId);
+            csvWriter.WriteField(id);
+            await csvWriter.NextRecordAsync();
+        }
+
+
+        await result2.CloseAsync();
+        writer.Close();
+
+        logger.LogCritical(
+            "Running MigrateWantToReadExport migration - Completed. This is not an error");
+    }
+}