From 7594a16e38304739487b053405153379faee6e58 Mon Sep 17 00:00:00 2001
From: crupest <crupest@outlook.com>
Date: Thu, 7 Jan 2021 16:23:20 +0800
Subject: 史诗级重构！
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---
 BackEnd/Timeline/Models/Mapper/TimelineMapper.cs | 85 ++++++++++++++++++++++++
 1 file changed, 85 insertions(+)
 create mode 100644 BackEnd/Timeline/Models/Mapper/TimelineMapper.cs

(limited to 'BackEnd/Timeline/Models/Mapper/TimelineMapper.cs')

diff --git a/BackEnd/Timeline/Models/Mapper/TimelineMapper.cs b/BackEnd/Timeline/Models/Mapper/TimelineMapper.cs
new file mode 100644
index 00000000..89a5c0c8
--- /dev/null
+++ b/BackEnd/Timeline/Models/Mapper/TimelineMapper.cs
@@ -0,0 +1,85 @@
+using AutoMapper;
+using Microsoft.AspNetCore.Mvc;
+using System.Collections.Generic;
+using System.Globalization;
+using System.Linq;
+using System.Threading.Tasks;
+using Timeline.Controllers;
+using Timeline.Entities;
+using Timeline.Models.Http;
+using Timeline.Services;
+
+namespace Timeline.Models.Mapper
+{
+    public static class TimelineMapper
+    {
+        public static HttpTimeline MapToHttp(this TimelineEntity entity, IUrlHelper urlHelper)
+        {
+            var timelineName = entity.Name is null ? "@" + entity.Owner.Username : entity.Name;
+
+            return new HttpTimeline(
+                uniqueId: entity.UniqueId,
+                title: string.IsNullOrEmpty(entity.Title) ? timelineName : entity.Title,
+                name: timelineName,
+                nameLastModifed: entity.NameLastModified,
+                description: entity.Description ?? "",
+                owner: entity.Owner.MapToHttp(urlHelper),
+                visibility: entity.Visibility,
+                members: entity.Members.Select(m => m.User.MapToHttp(urlHelper)).ToList(),
+                createTime: entity.CreateTime,
+                lastModified: entity.LastModified,
+                links: new HttpTimelineLinks(
+                    self: urlHelper.ActionLink(nameof(TimelineController.TimelineGet), nameof(TimelineController)[0..^nameof(Controller).Length], new { timeline = timelineName }),
+                    posts: urlHelper.ActionLink(nameof(TimelineController.PostListGet), nameof(TimelineController)[0..^nameof(Controller).Length], new { timeline = timelineName })
+                )
+            );
+        }
+
+        public static List<HttpTimeline> MapToHttp(this List<TimelineEntity> entites, IUrlHelper urlHelper)
+        {
+            return entites.Select(e => e.MapToHttp(urlHelper)).ToList();
+        }
+
+
+        public static HttpTimelinePost MapToHttp(this TimelinePostEntity entity, string timelineName, IUrlHelper urlHelper)
+        {
+            HttpTimelinePostContent? content = null;
+
+            if (entity.Content != null)
+            {
+                content = entity.ContentType switch
+                {
+                    TimelinePostContentTypes.Text => new HttpTimelinePostContent
+                    (
+                        type: TimelinePostContentTypes.Text,
+                        text: entity.Content,
+                        url: null,
+                        eTag: null
+                    ),
+                    TimelinePostContentTypes.Image => new HttpTimelinePostContent
+                    (
+                        type: TimelinePostContentTypes.Image,
+                        text: null,
+                        url: urlHelper.ActionLink(nameof(TimelineController.PostDataGet), nameof(TimelineController)[0..^nameof(Controller).Length], new { timeline = timelineName, post = entity.LocalId }),
+                        eTag: $"\"{entity.Content}\""
+                    ),
+                    _ => throw new DatabaseCorruptedException(string.Format(CultureInfo.InvariantCulture, "Unknown timeline post type {0}.", entity.ContentType))
+                };
+            }
+
+            return new HttpTimelinePost(
+                    id: entity.LocalId,
+                    content: content,
+                    deleted: content is null,
+                    time: entity.Time,
+                    author: entity.Author?.MapToHttp(urlHelper),
+                    lastUpdated: entity.LastUpdated
+                );
+        }
+
+        public static List<HttpTimelinePost> MapToHttp(this List<TimelinePostEntity> entities, string timelineName, IUrlHelper urlHelper)
+        {
+            return entities.Select(e => e.MapToHttp(timelineName, urlHelper)).ToList();
+        }
+    }
+}
-- 
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