def set_offer(request,group_id, id_in_group,valUnits,valPrice,valType):
# When this procedure is called, it means a player makes an offer and sends, except for his identity,
# info on the number of units, the price and the type (Sell or Buy).
# The offer is first created and then checked against the existing offers and matched and cleared if
# possible
# THIS IS THE ONLY POINT WHERE MATCHING IS DONE. IF HERE THE PROCEDURE MESSES UP AND AN OFFER "ESCAPES"
# MATCHING, THE AUCTION WILL NOT BE EXECUTED CORRECTLY!
#if not Constants.setOffer_started:
if True:
Constants.setOffer_started=True
#state.save()
print("set_offer called!")
context2=""
valUnits = int(valUnits)
valPrice = int(valPrice)
group_id = int(group_id)
id_in_group = int(id_in_group)
g=getGroup(group_id)
p = Player.objects.get(id_in_group=id_in_group,group=g)
p.save()
#print("BEFORE if valUnits and valPrice and int(valPrice)>0 and int(valUnits)>0:")
if valUnits and valPrice and int(valPrice)>0 and int(valUnits)>0:
# first delete the last standing offer
#if Offer.objects.filter(player=p).filter(cleared=False).order_by('-id').count()>0:
# Offer.objects.filter(player=p).filter(cleared=False).order_by('-id').first().delete()
#!!!!!!!!!!!!!!! must be uncommented- commented for demo
#now create the new offer
c = Offer(player=p)
c.unitsAvailable = int(valUnits)
c.unitsOriginal = int(valUnits)
c.unitsInherited = int(valUnits)
c.group=g
c.priceOriginal = int(valPrice)
c.type = valType
c.save()
context2={'lastOffer':c} #standing_offer=c
print("New Offer:..................................................................................",c)
print("price new offer:", c.priceOriginal)
print("unitsAvailable new offer",c.unitsAvailable)
if valType=="SELL": #then the matcher must be a buy
offer_list2 = Offer.objects.filter(group=p.group)\
.exclude(player=p)\
.exclude(canceled=True)\
.filter(priceOriginal__gte=c.priceOriginal)\
.filter(type__iexact="BUY")\
.filter(cleared=False)
offer_list = offer_list2.order_by('-priceOriginal','timeCreated')
print("buys:",offer_list)
print("buys:",offer_list.first())
elif valType == "BUY": #then the matcher must be a sell
offer_list2 = Offer.objects.filter(group=p.group)\
.exclude(player=p)\
.exclude(canceled=True)\
.filter(priceOriginal__lte=c.priceOriginal)\
.filter(type__iexact='SELL')\
.filter(cleared=False)
offer_list = offer_list2.order_by('priceOriginal','timeCreated')
print("sells:",offer_list)
else:
raise ValueError('valType is neither SELL or BUY')
#print("BEFORE first = offer_list.first()")
first = offer_list.first()
#print("AFTER first = offer_list.first()")
#print("BEFORE first_player=first.player")
if first:
first_player=first.player
else:
first_player=None
#print("AFTER first_player=first.player")
#print("first counteroffer is:",first)
while first is not None and c.unitsAvailable > first.unitsAvailable :
print("greater!")
print("first:",first)
#1.clear the smaller, first
clear_offer_smaller(first,c,first)
# now we must split up the offer into two parts, the first of which is cleared, the second part is the
# remaining units. This will be compared with other remaining offers (if any). If there are no other
# offers, the second part becomes the standing offer with attr "updated" set to True.
# a new offer is created, to carry the remaining units from the original offer
#2.make copy for the larger, c into c2
c2=copy_offer(c,p,first)
#3.clear the larger, c (the part of the present offer that will be cleared)
clear_offer_larger(first,c,first)
#4. make transaction
t = create_transaction(c, first)
#5. set products
setproducts(c,p,first,first_player)
#print("before try, first",first)
#6. set vouchers
#set_voucher(p,first,first.unitsCleared) # The vouchers are ticked
set_voucher(p,first_player,first,c.unitsCleared) # The vouchers are ticked
offer_list3 = offer_list.exclude(cleared=True) # update the list of remaining counter-offers
print(offer_list3)
c.save()
c2.save()
print("old c:",c)
print("old c2:",c2)
del c
c=c2
print("new c:",c)
print("new c2:",c2)
if offer_list3:
first=offer_list3.first() # get the update the list of remaining counter-offers
else:
print("no more offers:",offer_list3)
first=None
if first is not None and c.unitsAvailable < first.unitsAvailable:
first_player=first.player
print("smaller!")
print(first)
# now we must split up the counteroffer into two parts, the first of which is cleared, the second part is the
# remaining units.
#1.clear the smaller, c
clear_offer_smaller(c,first,first)
#2.make copy for the larger, first into f2
f2=copy_offer(first,first_player,c)
#print("after f2=copy_offer(first,first_player,c)")
#3. clear the larger, first
clear_offer_larger(c,first,first)
#4. make transaction
t = create_transaction(c, first)
#5. set products
setproducts(c,p,first,first_player)
#calculate production costs or buyers values
#6. set vouchers
print("1st setvoucher call")
# set_voucher(p,first,c.unitsCleared) # The vouchers are ticked
set_voucher(p,first_player,first,c.unitsCleared) # The vouchers are ticked
#print("After set_voucher(p,first,c.unitsCleared)")
#print("After clear_c(c,first) # clear c (as first.unitsA>c.unitsA)")
first.save()
f2.save()
#print("f2.save()")
elif first is not None and c.unitsAvailable == first.unitsAvailable:
first_player=first.player
print("now equal!")
print(first)
#1.clear the smaller, c
clear_offer_smaller(c,first,first)
#2.make copy for the larger - not necessary as equal
#3.clear the larger, first
clear_offer_larger(c,first,first)
#4. make transaction
t = create_transaction(c, first)
#5. set products
setproducts(c,p,first,first_player)
#print("f2: ",first)
#print("1st setvoucher call")
#6. set vouchers
#def set_voucher(p,first_player,first,unitsCleared)
set_voucher(p,first_player,first,c.unitsCleared) # The vouchers are ticked
else:
if valUnits=='':
messages.add_message(request, messages.INFO, 'fill out the number of units.')
if valPrice=='':
messages.add_message(request, messages.INFO, 'fill out the price per unit.')
if valUnits=='0' or valPrice=='0':
messages.add_message(request, messages.INFO, 'choose a number larger than zero.')
#DEM:
#print("BEFORE if id_in_group == 1:")
Constants.setOffer_started=False
#state.save()
#if id_in_group == 1:
if True:
print("is me, thus render!")
return render(request,'dAuction2/spot_market/my_standing_offer2.html', context = context2)
else:
print("is not me, no render! Is:",id_in_group)
# For the version with robots, obsolete here
return request # DEM: must still be calculated context
else:
print("presently a set_offer procedure is running, so no others can be processed:",id_in_group)
time.sleep(1)
Constants.setOffer_started=False
#state.save()
return request