Function GET

Returns Promise<
    | NextResponse<{ error: string }>
    | NextResponse<
        {
            success: boolean;
            timestamp: string;
            partnersProcessed: number;
            totalMessages: number;
            results: (
                | {
                    partnerId: string;
                    partnerName: string;
                    success: boolean;
                    messagesCount: number;
                    error?: undefined;
                }
                | {
                    messagesCount?: undefined;
                    partnerId: string;
                    partnerName: string;
                    success: boolean;
                    error: any;
                }
            )[];
        },
    >
    | NextResponse<{ success: boolean; error: any; timestamp: string }>,
>