105 lines
2.4 KiB
C#
105 lines
2.4 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using AudibleApi.Common;
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using AudibleUtilities;
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using DataLayer;
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using Dinah.Core.Collections.Generic;
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namespace DtoImporterService
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{
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public class CategoryImporter : ItemsImporterBase
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{
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protected override IValidator Validator => new CategoryValidator();
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public Dictionary<string, Category> Cache { get; private set; } = new();
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public CategoryImporter(LibationContext context) : base(context) { }
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protected override int DoImport(IEnumerable<ImportItem> importItems)
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{
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// get distinct
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var categoryIds = importItems
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.Select(i => i.DtoItem)
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.GetCategoriesDistinct()
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.Select(c => c.CategoryId)
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.Distinct()
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.ToList();
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// load db existing => .Local
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loadLocal_categories(categoryIds);
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// upsert
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var categoryPairs = importItems
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.Select(i => i.DtoItem)
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.GetCategoryPairsDistinct()
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.ToList();
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var qtyNew = upsertCategories(categoryPairs);
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return qtyNew;
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}
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private void loadLocal_categories(List<string> categoryIds)
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{
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// must include default/empty/missing
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categoryIds.Add(Category.GetEmpty().AudibleCategoryId);
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// load existing => local
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Cache = DbContext.Categories
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.Where(c => categoryIds.Contains(c.AudibleCategoryId))
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.ToDictionarySafe(c => c.AudibleCategoryId);
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}
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// only use after loading contributors => local
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private int upsertCategories(List<Ladder[]> categoryPairs)
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{
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var qtyNew = 0;
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foreach (var pair in categoryPairs)
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{
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for (var i = 0; i < pair.Length; i++)
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{
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// CATEGORY HACK: not yet supported: depth beyond 0 and 1
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if (i > 1)
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break;
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var id = pair[i].CategoryId;
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var name = pair[i].CategoryName;
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Category parentCategory = null;
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if (i == 1)
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Cache.TryGetValue(pair[0].CategoryId, out parentCategory);
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if (!Cache.TryGetValue(id, out var category))
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{
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category = addCategory(id, name);
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qtyNew++;
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}
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category.UpdateParentCategory(parentCategory);
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}
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}
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return qtyNew;
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}
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private Category addCategory(string id, string name)
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{
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try
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{
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var category = new Category(new AudibleCategoryId(id), name);
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var entityEntry = DbContext.Categories.Add(category);
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var entity = entityEntry.Entity;
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Cache.Add(entity.AudibleCategoryId, entity);
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return entity;
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}
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catch (Exception ex)
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{
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Serilog.Log.Logger.Error(ex, "Error adding category. {@DebugInfo}", new { id, name });
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throw;
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}
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}
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}
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}
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