[sales] Use UInt256 for size and duration

Use the same data types for availability and requests
for simplicity.

dagger/rest/json.nim

@@ -4,12 +4,9 @@ import pkg/stew/byteutils
 import pkg/questionable/results
 import ../sales
 
-func fromHex(T: type SomeInteger, s: string): T =
-  strutils.fromHex[T](s)
-
 proc fromJson*(_: type Availability, bytes: seq[byte]): ?!Availability =
   let json = ?catch parseJson(string.fromBytes(bytes))
   let size = ?catch UInt256.fromHex(json["size"].getStr)
-  let duration = ?catch uint64.fromHex(json["duration"].getStr)
-  let minPrice = ?catch uint64.fromHex(json["minPrice"].getStr)
+  let duration = ?catch UInt256.fromHex(json["duration"].getStr)
+  let minPrice = ?catch UInt256.fromHex(json["minPrice"].getStr)
   success Availability.init(size, duration, minPrice)

dagger/sales.nim

@@ -20,8 +20,8 @@ type
     onSale: ?OnSale
   Availability* = object
     id*: array[32, byte]
-    size*: uint64
-    duration*: uint64
+    size*: UInt256
+    duration*: UInt256
     minPrice*: UInt256
   Negotiation = ref object
     sales: Sales
@@ -38,8 +38,8 @@ func new*(_: type Sales, market: Market): Sales =
   Sales(market: market, offerExpiryInterval: DefaultOfferExpiryInterval)
 
 proc init*(_: type Availability,
-          size: uint64,
-          duration: uint64,
+          size: UInt256,
+          duration: UInt256,
           minPrice: UInt256): Availability =
   var id: array[32, byte]
   doAssert randomBytes(id) == 32
@@ -56,8 +56,8 @@ func remove*(sales: Sales, availability: Availability) =
 
 func findAvailability(sales: Sales, ask: StorageAsk): ?Availability =
   for availability in sales.available:
-    if ask.size <= availability.size.u256 and
-       ask.duration <= availability.duration.u256 and
+    if ask.size <= availability.size and
+       ask.duration <= availability.duration and
        ask.maxPrice >= availability.minPrice:
       return some availability
 

tests/dagger/examples.nim

@@ -54,4 +54,8 @@ proc example*(_: type Cid): Cid =
   bt.Block.example.cid
 
 proc example*(_: type Availability): Availability =
-  Availability.init(uint16.example, uint16.example, uint64.example.u256)
+  Availability.init(
+    size = uint16.example.u256,
+    duration = uint16.example.u256,
+    minPrice = uint64.example.u256
+  )

tests/dagger/testsales.nim

@@ -7,10 +7,16 @@ import ./examples
 
 suite "Sales":
 
-  let availability = Availability.init(size=100, duration=60, minPrice=42.u256)
-  let request = StorageRequest(
-    ask: StorageAsk(duration: 60.u256, size: 100.u256, maxPrice:42.u256)
+  let availability = Availability.init(
+    size=100.u256,
+    duration=60.u256,
+    minPrice=42.u256
   )
+  let request = StorageRequest(ask: StorageAsk(
+    duration: 60.u256,
+    size: 100.u256,
+    maxPrice:42.u256
+  ))
 
   var sales: Sales
   var market: MockMarket
@@ -41,8 +47,8 @@ suite "Sales":
     check sales.available.len == 0
 
   test "generates unique ids for storage availability":
-    let availability1 = Availability.init(size=1, duration=2, minPrice=3.u256)
-    let availability2 = Availability.init(size=1, duration=2, minPrice=3.u256)
+    let availability1 = Availability.init(1.u256, 2.u256, 3.u256)
+    let availability2 = Availability.init(1.u256, 2.u256, 3.u256)
     check availability1.id != availability2.id
 
   test "offers available storage when matching request comes in":