初回コミット

vite.config.ts

@@ -0,0 +1,67 @@
+import { defineConfig } from 'vite'
+import react from '@vitejs/plugin-react'
+import fs from 'node:fs'
+import path from 'node:path'
+import type { IncomingMessage, ServerResponse } from 'node:http'
+
+const DATA_FILE = path.resolve('./data.json')
+
+function readData(): Record<string, unknown> {
+  if (!fs.existsSync(DATA_FILE)) return {}
+  try {
+    return JSON.parse(fs.readFileSync(DATA_FILE, 'utf-8'))
+  } catch {
+    return {}
+  }
+}
+
+function readBody(req: IncomingMessage): Promise<string> {
+  return new Promise((resolve) => {
+    let body = ''
+    req.on('data', (chunk: Buffer) => { body += chunk.toString() })
+    req.on('end', () => resolve(body))
+  })
+}
+
+export default defineConfig({
+  plugins: [
+    react(),
+    {
+      name: 'data-api',
+      configureServer(server) {
+        server.middlewares.use('/api/data', async (req: IncomingMessage, res: ServerResponse) => {
+          res.setHeader('Content-Type', 'application/json')
+
+          if (req.method === 'GET') {
+            const data = readData()
+            res.end(JSON.stringify(data))
+
+          } else if (req.method === 'POST') {
+            const body = await readBody(req)
+            const incoming = JSON.parse(body) as { key: string; value: unknown }
+            const data = readData()
+            data[incoming.key] = incoming.value
+            fs.writeFileSync(DATA_FILE, JSON.stringify(data))
+            res.end('{"ok":true}')
+
+          } else if (req.method === 'DELETE') {
+            const key = new URL(req.url ?? '', 'http://x').searchParams.get('key')
+            if (key) {
+              const data = readData()
+              delete data[key]
+              fs.writeFileSync(DATA_FILE, JSON.stringify(data))
+            }
+            res.end('{"ok":true}')
+
+          } else {
+            res.statusCode = 405
+            res.end('{"error":"Method Not Allowed"}')
+          }
+        })
+      },
+    },
+  ],
+  server: {
+    host: true, // ローカルネットワーク全体に公開
+  },
+})