import { NextRequest, NextResponse } from "next/server"
import { config } from "dotenv"
import { resolve } from "path"
import { ObjectId } from "mongodb"
import { getCollection } from "@/lib/db/mongo"

if (typeof process !== "undefined" && !process.env.MONGODB_URI) {
  config({ path: resolve(process.cwd(), ".env.local") })
}

const now = () => new Date().toISOString()

export async function GET(request: NextRequest) {
  try {
    const { searchParams } = new URL(request.url)
    const type = searchParams.get("type") // tag | event | banner | 空=全部
    const coll = await getCollection("contentItems")
    const query = type ? { type } : {}
    const list = await coll.find(query).sort({ sortOrder: 1, createdAt: -1 }).limit(300).toArray()
    const data = list.map((doc: Record<string, unknown> & { _id: ObjectId }) => ({
      ...doc,
      id: doc._id.toString(),
    }))
    return NextResponse.json({ success: true, data })
  } catch (e) {
    console.error("GET /api/admin/content/items error:", e)
    return NextResponse.json({ success: false, error: String(e) }, { status: 500 })
  }
}

export async function POST(request: NextRequest) {
  try {
    const body = await request.json()
    const coll = await getCollection("contentItems")
    const doc = {
      type: body.type ?? "tag",
      title: body.title ?? "未命名",
      link: body.link ?? "",
      image: body.image ?? "",
      sortOrder: Number(body.sortOrder) || 0,
      status: body.status ?? "active",
      createdAt: now(),
      updatedAt: now(),
    }
    const r = await coll.insertOne(doc)
    return NextResponse.json({ success: true, data: { id: r.insertedId.toString() } })
  } catch (e) {
    console.error("POST /api/admin/content/items error:", e)
    return NextResponse.json({ success: false, error: String(e) }, { status: 500 })
  }
}