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:dict) -> bytes:
    otype = original["type"]
    if otype == 'a':
        rtype = niming_pb2.FetchPostResponse
    elif otype == 'c':
        rtype = niming_pb2.FetchCommentResponse
    
    original = original["data"]
    res = rtype()
    
    for o in original:
        # drop null object
        o = {k:v for k, v in o.items() if v is not None}
        
        if otype == "a":
            ob = rtype.Message(id=o["id"])
            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"])
        elif otype == "c":
            ob = rtype.Message(sha1=o["sha1"])
            
        ob.content = o["content"]
        
        res.posts.append(ob)
    return res.SerializeToString()