Phase 1 Sprint C+D: Admin UI + Frontend Sidebar

src/app/api/tenant/symbols/[id]/image/route.ts

@@ -0,0 +1,83 @@
+import { NextRequest, NextResponse } from 'next/server'
+import { prisma } from '@/lib/db'
+import { getFileStream } from '@/lib/minio'
+import { readFile } from 'fs/promises'
+import { join } from 'path'
+
+async function getTenantId() {
+  const { headers } = await import('next/headers')
+  const h = await headers()
+  return h.get('x-tenant-id') || 'default'
+}
+
+export async function GET(
+  _req: NextRequest,
+  { params }: { params: Promise<{ id: string }> }
+) {
+  try {
+    const { id } = await params
+    const tenantId = await getTenantId()
+
+    const symbol = await (prisma as any).tenantSymbol.findFirst({
+      where: { id, tenantId },
+      include: { category: true },
+    })
+
+    if (!symbol) {
+      return new NextResponse('Not found', { status: 404 })
+    }
+
+    // 1. Uploaded file → MinIO
+    if (symbol.isUploaded && symbol.svgPath) {
+      try {
+        const { stream, contentType } = await getFileStream(symbol.svgPath)
+        const chunks: Buffer[] = []
+        for await (const chunk of stream as any) {
+          chunks.push(Buffer.isBuffer(chunk) ? chunk : Buffer.from(chunk))
+        }
+        const buffer = Buffer.concat(chunks)
+        return new NextResponse(buffer, {
+          headers: {
+            'Content-Type': contentType,
+            'Cache-Control': 'public, max-age=86400',
+          },
+        })
+      } catch (err) {
+        console.error('MinIO stream error:', err)
+        return new NextResponse('File not available', { status: 502 })
+      }
+    }
+
+    // 2. Migrated from IconAsset → serve from public/signaturen
+    if (symbol.migratedFromIconId) {
+      const icon = await (prisma as any).iconAsset.findUnique({
+        where: { id: symbol.migratedFromIconId },
+      })
+      if (icon?.fileKey) {
+        const filePath = join(process.cwd(), 'public', icon.fileKey)
+        try {
+          const buffer = await readFile(filePath)
+          const ext = icon.fileKey.split('.').pop()?.toLowerCase()
+          const mimeType =
+            ext === 'svg' ? 'image/svg+xml' :
+            ext === 'png' ? 'image/png' :
+            ext === 'jpg' || ext === 'jpeg' ? 'image/jpeg' :
+            'application/octet-stream'
+          return new NextResponse(buffer, {
+            headers: {
+              'Content-Type': mimeType,
+              'Cache-Control': 'public, max-age=86400',
+            },
+          })
+        } catch {
+          // fall through to 404
+        }
+      }
+    }
+
+    return new NextResponse('Not found', { status: 404 })
+  } catch (err) {
+    console.error('Tenant symbol image error:', err)
+    return new NextResponse('Internal error', { status: 500 })
+  }
+}