from flask import jsonify, Response

from protobuf_files import niming_pb2

def error(message:str) -> Response:
    return jsonify({"error":message})


def error_proto(message:str) -> bytes:
    return niming_pb2.PostResponse(
        status = niming_pb2.Status.Failed,
        failed_message = message
    ).SerializeToString()


def internal_json2protobuf(original:list|dict) -> bytes:
    if isinstance(original, dict):
        original = [original]
    
    res = niming_pb2.FetchResponse()
    for o in original:
        # drop null object
        newo = {}
        for oc in o:
            if o[oc] is not None:
                newo[oc] = o[oc]
        o = newo
        
        ob = niming_pb2.FetchResponse.Message()
        
        if "id" in o: ob.id = o["id"]
        if "content" in o: ob.content = o["content"]
        if "igid" in o: ob.igid = o["igid"]
        if "files_hash" in o: ob.files_hash.extend(o["files_hash"])
        if "comments_hash" in o: ob.comments_hash.extend(o["comments_hash"])
        res.posts.append(ob)
    return res.SerializeToString()