import { NextResponse } from "next/server";
import { requireSessionUser } from "@/lib/server/session";
import { requireActiveGroup } from "@/lib/server/groups";
import { createInviteLink, listInviteLinks } from "@/lib/server/group-invites";
import { toErrorResponse } from "@/lib/server/errors";
import { getRequestMeta } from "@/lib/server/request";

export async function GET() {
    const { requestId } = await getRequestMeta();
    try {
        const user = await requireSessionUser();
        const groupId = await requireActiveGroup(user.id);
        const links = await listInviteLinks({ userId: user.id, groupId });
        return NextResponse.json({ requestId, request_id: requestId, links });
    } catch (e) {
        const { status, body } = toErrorResponse(e, "GET /api/groups/invites", requestId);
        return NextResponse.json(body, { status });
    }
}

export async function POST(req: Request) {
    const { requestId, ip, userAgent } = await getRequestMeta();
    try {
        const user = await requireSessionUser();
        const groupId = await requireActiveGroup(user.id);
        const body = await req.json().catch(() => null);
        const policy = ["NOT_ACCEPTING", "AUTO_ACCEPT", "APPROVAL_REQUIRED"].includes(String(body?.policy))
            ? (String(body?.policy) as "NOT_ACCEPTING" | "AUTO_ACCEPT" | "APPROVAL_REQUIRED")
            : "NOT_ACCEPTING";
        const singleUse = Boolean(body?.singleUse);
        const ttlDays = Math.min(7, Math.max(1, Number(body?.ttlDays || 0)));
        if (!ttlDays)
            return NextResponse.json({ requestId, request_id: requestId, error: { code: "MISSING_TTL", message: "ttlDays is required" } }, { status: 400 });
        const expiresAt = new Date(Date.now() + ttlDays * 24 * 60 * 60 * 1000);
        const link = await createInviteLink({ userId: user.id, groupId, policy, singleUse, expiresAt, requestId, ip, userAgent });
        return NextResponse.json({ requestId, request_id: requestId, link });
    } catch (e) {
        const { status, body } = toErrorResponse(e, "POST /api/groups/invites", requestId);
        return NextResponse.json(body, { status });
    }
}