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src/app/api/software/latest/route.ts

@@ -0,0 +1,85 @@
+import { NextRequest, NextResponse } from "next/server";
+import { prisma } from "@/lib/db";
+import { readFile, stat } from "fs/promises";
+import path from "path";
+
+const LAUNCHER_SLUG = "nanami-launcher";
+
+export async function GET(request: NextRequest) {
+  const { searchParams } = new URL(request.url);
+  const infoOnly = searchParams.get("info") === "1";
+
+  const software = await prisma.software.findUnique({
+    where: { slug: LAUNCHER_SLUG },
+    include: {
+      versions: {
+        where: { isLatest: true },
+        take: 1,
+      },
+    },
+  });
+
+  if (!software || software.versions.length === 0) {
+    if (infoOnly) {
+      return NextResponse.json({ available: false });
+    }
+    return NextResponse.json(
+      { error: "暂无可下载版本" },
+      { status: 404 }
+    );
+  }
+
+  const latest = software.versions[0];
+
+  if (infoOnly) {
+    const downloadUrl =
+      latest.downloadType === "url" && latest.externalUrl
+        ? latest.externalUrl
+        : `/api/software/download/${latest.id}`;
+    return NextResponse.json({
+      available: true,
+      version: latest.version,
+      versionCode: latest.versionCode,
+      changelog: latest.changelog,
+      fileSize: latest.fileSize,
+      createdAt: latest.createdAt,
+      downloadUrl,
+      downloadType: latest.downloadType,
+    });
+  }
+
+  await prisma.softwareVersion.update({
+    where: { id: latest.id },
+    data: { downloadCount: { increment: 1 } },
+  });
+
+  if (latest.downloadType === "url" && latest.externalUrl) {
+    return new Response(null, {
+      status: 302,
+      headers: { Location: latest.externalUrl },
+    });
+  }
+
+  if (latest.filePath) {
+    const filePath = path.join(process.cwd(), latest.filePath);
+    try {
+      await stat(filePath);
+    } catch {
+      return NextResponse.json({ error: "文件不存在" }, { status: 404 });
+    }
+
+    const fileBuffer = await readFile(filePath);
+    const ext = path.extname(latest.filePath);
+    const fileName = `nanami-launcher-v${latest.version}${ext}`;
+
+    return new NextResponse(fileBuffer, {
+      headers: {
+        "Content-Type": "application/octet-stream",
+        "Content-Disposition": `attachment; filename="${fileName}"`,
+        "Content-Length": fileBuffer.length.toString(),
+      },
+    });
+  }
+
+  return NextResponse.json({ error: "无下载来源" }, { status: 404 });
+}