Metadata Downloading (#3525)

API/Data/ManualMigrations/v0.7.14/MigrateWantToReadImport.cs

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+using System.Globalization;
+using System.IO;
+using System.Linq;
+using System.Threading.Tasks;
+using API.Data.Repositories;
+using API.Entities;
+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 imported from a csv
+/// </summary>
+public static class MigrateWantToReadImport
+{
+    public static async Task Migrate(IUnitOfWork unitOfWork, DataContext dataContext, IDirectoryService directoryService, ILogger<Program> logger)
+    {
+
+        if (await dataContext.ManualMigrationHistory.AnyAsync(m => m.Name == "MigrateWantToReadImport"))
+        {
+            return;
+        }
+
+        var importFile = Path.Join(directoryService.ConfigDirectory, "want-to-read-migration.csv");
+        var outputFile = Path.Join(directoryService.ConfigDirectory, "imported-want-to-read-migration.csv");
+
+        if (!File.Exists(importFile) || File.Exists(outputFile))
+        {
+            logger.LogCritical(
+                "Running MigrateWantToReadImport migration - Completed. This is not an error");
+            return;
+        }
+
+        logger.LogCritical(
+            "Running MigrateWantToReadImport migration - Please be patient, this may take some time. This is not an error");
+
+        using var reader = new StreamReader(importFile);
+        using var csvReader = new CsvReader(reader, CultureInfo.InvariantCulture);
+        // Read the records from the CSV file
+        await csvReader.ReadAsync();
+        csvReader.ReadHeader(); // Skip the header row
+
+        while (await csvReader.ReadAsync())
+        {
+            // Read the values of AppUserId and Id columns
+            var appUserId = csvReader.GetField<int>("AppUserId");
+            var seriesId = csvReader.GetField<int>("Id");
+            var user = await unitOfWork.UserRepository.GetUserByIdAsync(appUserId, AppUserIncludes.WantToRead);
+            if (user == null || user.WantToRead.Any(w => w.SeriesId == seriesId)) continue;
+
+            user.WantToRead.Add(new AppUserWantToRead()
+            {
+                SeriesId = seriesId
+            });
+        }
+
+        await unitOfWork.CommitAsync();
+        reader.Close();
+
+        File.WriteAllLines(outputFile, await File.ReadAllLinesAsync(importFile));
+        logger.LogCritical(
+            "Running MigrateWantToReadImport migration - Completed. This is not an error");
+    }
+}