feat: enable loading all the cryptokitties assets with recursion

src/status/wallet/collectibles.nim

@@ -59,19 +59,17 @@ proc tokensOfOwnerByIndex(contract: Contract, address: Address): seq[int] =
     result.add(token)
     index = index + 1
 
-proc getCryptoKitties*(address: Address): string =
+proc getCryptoKittiesBatch*(address: Address, offset: int = 0): seq[Collectible] =
   var cryptokitties: seq[Collectible]
   cryptokitties = @[]
-  try:
   # TODO handle testnet -- does this API exist in testnet??
-    # TODO handle offset (recursive method?)
+  let url: string = fmt"https://api.cryptokitties.co/kitties?limit=20&offset={$offset}&owner_wallet_address={$address}&parents=false"
-    # Crypto kitties has a limit of 20
-    let url: string = fmt"https://api.cryptokitties.co/kitties?limit=20&offset=0&owner_wallet_address={$address}&parents=false"
   let client = newHttpClient()
   client.headers = newHttpHeaders({ "Content-Type": "application/json" })
 
   let response = client.request(url)
-    let kitties = parseJson(response.body)["kitties"]
+  let responseBody = parseJson(response.body)
+  let kitties = responseBody["kitties"]
   for kitty in kitties:
     try:
       var id = kitty["id"]
@@ -90,12 +88,24 @@ proc getCryptoKitties*(address: Address): string =
       externalUrl: ""))
     except Exception as e2:
       error "Error with this individual cat", msg = e2.msg, cat = kitty
+
+  let limit = responseBody["limit"].getInt
+  let total = responseBody["total"].getInt
+  if (limit * (offset + 1) < total):
+    # Call the API again with oofset + 1
+    let nextBatch = getCryptoKittiesBatch(address, offset + 1)
+    return concat(cryptokitties, nextBatch)
+  return cryptokitties
+
+proc getCryptoKitties*(address: Address): string =
+  try:
+    let cryptokitties = getCryptoKittiesBatch(address, 0)
+  
+    return $(%*cryptokitties)
   except Exception as e:
     error "Error getting Cryptokitties", msg = e.msg
     return e.msg
 
-  return $(%*cryptokitties)
-
 proc getCryptoKitties*(address: string): string =
   let eth_address = parseAddress(address)
   result = getCryptoKitties(eth_address)