#14 ぼちぼち

frontend/src/pages/PostNewPage.tsx

@@ -0,0 +1,157 @@
+import React, { useEffect, useState } from 'react'
+import { Link, useLocation, useParams, useNavigate } from 'react-router-dom'
+import axios from 'axios'
+import { API_BASE_URL, SITE_TITLE } from '../config'
+import NicoViewer from '../components/NicoViewer'
+import { Button } from '@/components/ui/button'
+import { toast } from '@/components/ui/use-toast'
+import { cn } from '@/lib/utils'
+
+type Tag = { id:        number
+             name:      string
+             category:  string }
+
+type Post = { id:         number
+              url:        string
+              title:      string
+              thumbnail:  string
+              tags:       Tag[]
+              viewed:     boolean }
+
+type Props = { posts:     Post[]
+               setPosts:  (posts: Post[]) => void }
+
+
+const PostNewPage = () => {
+  const location = useLocation ()
+  const navigate = useNavigate ()
+
+  const [title, setTitle] = useState ('')
+  const [titleAutoFlg, setTitleAutoFlg] = useState (true)
+  const [url, setURL] = useState ('')
+  const [thumbnailFile, setThumbnailFile] = useState<File | null> (null)
+  const [thumbnailPreview, setThumbnailPreview] = useState<string> ('')
+  const [thumbnailAutoFlg, setThumbnailAutoFlg] = useState (true)
+  const [tags, setTags] = useState<Tag[]> ([])
+  const [tagIds, setTagIds] = useState<number[]> ([])
+
+  const handleSubmit = () => {
+    const formData = new FormData ()
+    formData.append ('title', title || null)
+    formData.append ('url', url)
+    formData.append ('tags', JSON.stringify (tagIds))
+    formData.append ('thumbnail', thumbnailAutoFlg ? null : thumbnailFile)
+
+    void (axios.post (`${ API_BASE_URL }/posts`, formData, { headers: {
+              'Content-Type':     'multipart/form-data',
+              'X-Transfer-Code':  localStorage.getItem ('user_code') || '' } })
+          .then (() => {
+            toast ({ title: '投稿成功!' })
+            navigate ('/posts')
+          })
+          .catch (e => toast ({ title:        '投稿失敗',
+                                description:  '入力を確認してください。' })))
+  }
+
+  document.title = `広場に投稿を追加 | ${ SITE_TITLE }`
+
+  useEffect (() => {
+    void (axios.get ('/api/tags')
+          .then (res => setTags (res.data))
+          .catch (() => toast ({ title: 'タグ一覧の取得失敗' })))
+  }, [])
+
+  return (
+      <div className="max-w-xl mx-auto p-4 space-y-4">
+        <h1 className="text-2xl font-bold mb-2">広場に投稿を追加する</h1>
+
+        {/* URL */}
+        <div>
+          <label className="block font-semibold mb-1">URL</label>
+          <input type="text"
+                 placeholder="例：https://www.nicovideo.jp/watch/..."
+                 value={url}
+                 onChange={e => setURL (e.target.value)}
+                 className="w-full border p-2 rounded" />
+        </div>
+
+        {/* タイトル */}
+        <div>
+          <div className="flex gap-2 mb-1">
+            <label className="flex-1 block font-semibold">タイトル</label>
+            <label className="flex items-center block gap-1">
+              <input type="checkbox"
+                     checked={titleAutoFlg}
+                     onChange={e => setTitleAutoFlg (e.target.checked)} />
+              自動
+            </label>
+          </div>
+          <input type="text"
+                 className="w-full border rounded p-2"
+                 value={title}
+                 onChange={e => setTitle (e.target.value)}
+                 disabled={titleAutoFlg} />
+        </div>
+
+        {/* サムネール */}
+        <div>
+          <div className="flex gap-2 mb-1">
+            <label className="block font-semibold flex-1">サムネール</label>
+            <label className="flex items-center gap-1">
+              <input type="checkbox"
+                     checked={thumbnailAutoFlg}
+                     onChange={e => setThumbnailAutoFlg (e.target.checked)} />
+              自動
+            </label>
+          </div>
+          {thumbnailAutoFlg
+           ? (
+              <p className="text-gray-500 text-sm">
+                URL から自動取得されます。
+              </p>)
+           : (
+              <>
+                <input type="file"
+                       accept="image/*"
+                       onChange={e => {
+                         const file = e.target.files?.[0]
+                         if (file)
+                           {
+                             setThumbnailFile (file)
+                             setThumbnailPreview (URL.createObjectURL (file))
+                           }
+                       }} />
+                {thumbnailPreview && (
+                    <img src={thumbnailPreview}
+                         alt="preview"
+                         className="mt-2 max-h-48 rounded border" />)}
+              </>)}
+        </div>
+
+        {/* タグ */}
+        <div>
+          <label className="block font-semibold">タグ</label>
+          <select multiple
+                  value={tagIds.map (String)}
+                  onChange={e => {
+                    const values = Array.from (e.target.selectedOptions).map (o => Number (o.value))
+                    setTagIds (values)
+                  }}
+                  className="w-full p-2 border rounded h-32">
+            {tags.map ((tag: Tag) => (
+                <option key={tag.id} value={tag.id}>
+                  {tag.name}
+                </option>))}
+          </select>
+        </div>
+
+        {/* 送信 */}
+        <button onClick={handleSubmit}
+                className="px-4 py-2 bg-blue-600 text-white rounded">
+          追加
+        </button>
+      </div>)
+}
+
+
+export default PostNewPage