Add import functionality for EPUB files: create ImportClient component and ModImportPage

app/api/mod-import/[...path]/route.ts

@@ -0,0 +1,51 @@
+import { NextRequest, NextResponse } from "next/server"
+import { AUTH_COOKIE_NAME } from "@/lib/auth-cookie"
+
+export const runtime = "nodejs"
+export const dynamic = "force-dynamic"
+
+const readerApiOrigin = (process.env.READER_API_ORIGIN || "http://localhost:8000").replace(/\/+$/, "")
+
+async function proxyToReaderApi(req: NextRequest, path: string[]) {
+  const accessToken = req.cookies.get(AUTH_COOKIE_NAME)?.value || null
+
+  const url = new URL(req.url)
+  const query = url.search || ""
+  const targetUrl = `${readerApiOrigin}/api/import/${path.join("/")}${query}`
+
+  const headers = new Headers(req.headers)
+  headers.delete("host")
+  headers.delete("cookie")
+  if (accessToken) {
+    headers.set("authorization", `Bearer ${accessToken}`)
+  }
+
+  const isBodyMethod = req.method !== "GET" && req.method !== "HEAD"
+  const upstream = await fetch(targetUrl, {
+    method: req.method,
+    headers,
+    body: isBodyMethod ? req.body : undefined,
+    cache: "no-store",
+    duplex: "half",
+  } as any)
+
+  return new NextResponse(upstream.body, {
+    status: upstream.status,
+    headers: upstream.headers,
+  })
+}
+
+export async function GET(req: NextRequest, ctx: { params: Promise<{ path: string[] }> }) {
+  const { path } = await ctx.params
+  return proxyToReaderApi(req, path)
+}
+
+export async function POST(req: NextRequest, ctx: { params: Promise<{ path: string[] }> }) {
+  const { path } = await ctx.params
+  return proxyToReaderApi(req, path)
+}
+
+export async function DELETE(req: NextRequest, ctx: { params: Promise<{ path: string[] }> }) {
+  const { path } = await ctx.params
+  return proxyToReaderApi(req, path)
+}