from typing import Any, Dict, Union
from geniusweb.issuevalue.Value import Value

NoneType=type(None)

class Bid:
    def __init__(self, issuevalues:Dict[str, Value]):
        '''
        FIXME use strict typing
        '''
        for (iss,val) in issuevalues.items():
            if not isinstance(iss, str):
                raise ValueError("Issue "+str(iss)+" must be a str")
            if not isinstance(val, Value):
                raise ValueError("value "+str(val)+" must be a Value, but is "+str(type(val)))
        self._issuevalues = dict(issuevalues) #shallow copy : Value is immutable

    def getIssueValues(self) -> Dict[str, Value]:
        return self._issuevalues
    
    def getIssues(self):
        return self._issuevalues.keys()
    
    
    def getValue(self, issue:str) -> Union[Value,NoneType] :
        '''
        @param issue name of the issue
        @return the value for the given issue, or null if there is no value for
                the given issue.
        '''
        if not issue in self._issuevalues:
            return None
        return self._issuevalues[issue];
    
    def __eq__(self, other):
        return isinstance(other, self.__class__) and \
            self._issuevalues == other._issuevalues

    def __repr__(self) -> str:
        return "Bid" + repr( self._issuevalues);
    
    def __hash__(self):
        return hash((tuple(self._issuevalues.items())))