#45 差分表示以外完了

backend/app/controllers/wiki_pages_controller.rb

@@ -52,12 +52,17 @@ class WikiPagesController < ApplicationController
 
   def changes
     id = params[:id]
-    log = id.present? ? wiki.page("#{ id }.md").versions : wiki.repo.log('main', nil, max_count: 50)
+    log = id.present? ? wiki.page("#{ id }.md")&.versions : wiki.repo.log('main', nil, max_count: 50)
+    return render json: [] unless log
+
     render json: log.map { |commit|
-        { sha:        commit.id,
-          author:     commit.author.name,
-          message:    commit.message,
-          timestamp:  commit.authored_date } }
+        wiki_page = WikiPage.find(commit.message.split(' ')[1].to_i)
+        user = User.find(commit.author.name.to_i)
+        { sha:          commit.id,
+          wiki_page:    wiki_page && { id: wiki_page.id, title: wiki_page.title },
+          user:         user && { id: user.id, name: user.name },
+          change_type:  commit.message.split(' ')[0].downcase[0...(-1)],
+          timestamp:    commit.authored_date } }
   end
 
   private

backend/app/models/wiki_page.rb

@@ -14,15 +14,14 @@ class WikiPage < ApplicationRecord
   end
 
   def set_body content, user:
-    page = wiki.page("#{ id }.md")
-
-    commit_info = { message:  "Update #{ title }",
-                    name:     user.id.to_s,
+    commit_info = { name:     user.id.to_s,
                     email:    'dummy@example.com' }
-
+    page = wiki.page("#{ id }.md")
     if page
+      commit_info[:message] = "Updated #{ id }"
       wiki.update_page(page, id.to_s, :markdown, content, commit_info)
     else
+      commit_info[:message] = "Created #{ id }"
       wiki.write_page(id.to_s, :markdown, content, commit_info)
     end
   end

frontend/src/pages/WikiHistoryPage.tsx

@@ -1,8 +1,65 @@
+import { useEffect, useState } from 'react'
+import { Link, useLocation, useParams } from 'react-router-dom'
 import MainArea from '@/components/layout/MainArea'
+import axios from 'axios'
+import { API_BASE_URL } from '@/config'
+
+import type { WikiPageChange } from '@/types'
 
 
 export default () => {
+  const [changes, setChanges] = useState<WikiPageChange[]> ([])
+
+  const location = useLocation ()
+  const query = new URLSearchParams (location.search)
+  const id = query.get ('id')
+
+  useEffect (() => {
+    void (axios.get (`${ API_BASE_URL }/wiki/changes`, id && { params: { id } })
+          .then (res => setChanges (res.data)))
+  }, [location.search])
+
   return (
       <MainArea>
+        <table className="table-auto w-full border-collapse">
+          <thead>
+            <tr>
+              <th></th>
+              <th className="p-2 text-left">タイトル</th>
+              <th className="p-2 text-left">変更</th>
+              <th className="p-2 text-left">日時</th>
+            </tr>
+          </thead>
+          <tbody>
+            {changes.map (change => (
+                <tr key={change.sha}>
+                  <td>差分</td>
+                  <td className="p-2">
+                    <Link to={`/wiki/${ encodeURIComponent (change.wiki_page.title) }`}
+                          className="text-blue-400 hover:underline">
+                      {change.wiki_page.title}
+                    </Link>
+                  </td>
+                  <td className="p-2">
+                    {(() => {
+                      switch (change.change_type)
+                      {
+                      case 'create':  return '新規'
+                      case 'update':  return '更新'
+                      case 'delete':  return '削除'
+                      }
+                    }) ()}
+                  </td>
+                  <td className="p-2">
+                    <Link to={`/users/${ change.user.id }`}
+                          className="text-blue-400 hover:underline">
+                      {change.user.name}
+                    </Link>
+                    <br />
+                    {change.timestamp}
+                  </td>
+                </tr>))}
+          </tbody>
+        </table>
       </MainArea>)
 }

frontend/src/types.ts

@@ -22,4 +22,16 @@ export type User = {
     inheritanceCode:  string
     role:             UserRole }
 
+export type WikiPage = {
+    id:           number
+    title:        string
+    updated_at?:  string }
+
+export type WikiPageChange = {
+    sha:          string
+    wiki_page:    WikiPage
+    user:         User
+    change_type:  string
+    timestamp:    string }
+
 export type UserRole = typeof USER_ROLES[number]