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using AutoMapper;
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using Core.Contexts;
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using Models.Tags;
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using Serilog;
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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namespace Core.Services.TagService
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{
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public class TagServiceEF : ITagService
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{
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private readonly DatabaseContext databaseContext;
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private readonly ILogger logger;
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private readonly IMapper mapper;
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public TagServiceEF(DatabaseContext databaseContext, ILogger logger, IMapper mapper)
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{
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this.databaseContext = databaseContext;
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this.logger = logger;
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this.mapper = mapper;
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}
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public TagTreeResponse GetTagTree()
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{
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// Prefetch from DB
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var tagCategories = databaseContext.TagCategories
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.Select(tc => tc)
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.OrderBy(tc => tc.Name)
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.ToList();
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var tags = databaseContext.Tags
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.Select(tc => tc)
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.ToList();
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var subTags = databaseContext.SubTags
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.Select(tc => tc)
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.ToList();
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var tagCategoriesDTOs = new List<TagCategoryInfo>();
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foreach (var tagCategory in tagCategories)
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{
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var tagCategoryDTO = mapper.Map<TagCategoryInfo>(tagCategory);
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var categoryTags = tags
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.Where(t => t.Category == tagCategory)
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.OrderBy(t => t.Name);
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var tagDTOs = new List<TagInfo>();
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foreach (var tag in categoryTags)
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{
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var tagDTO = mapper.Map<TagInfo>(tag);
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var tagSubTags = subTags
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.Where(st => st.Tag == tag)
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.OrderBy(st => st.Name)
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.ToList();
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var subTagDTOs = new List<SubTagInfo>();
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if (tagSubTags.Count() != 0)
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{
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foreach (var subTag in tagSubTags)
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{
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subTagDTOs.Add(mapper.Map<SubTagInfo>(subTag));
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}
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}
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tagDTO.SubTags = subTagDTOs;
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tagDTOs.Add(tagDTO);
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}
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tagCategoryDTO.Tags = tagDTOs;
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tagCategoriesDTOs.Add(tagCategoryDTO);
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}
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return new TagTreeResponse()
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{
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TagCategories = tagCategoriesDTOs
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};
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}
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}
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}
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