fix getting pack content hashes

Signed-off-by: Jakub Sokołowski <jakub@status.im>

contract.py

@@ -11,5 +11,13 @@ class StickerPackContract:
         )
 
     def getAllPacks(self):
-        return self.contract.functions.totalSupply().call()
-        #for i=0; i<stickerTypeContract stickerTypeContract.functions.getPackSummary(i)
+        count = self.contract.functions.totalSupply().call()
+        return [
+            self.contentHashFromPack(
+                self.contract.functions.getPackSummary(i).call()
+            ) for i in range(count)
+        ]
+
+    @staticmethod
+    def contentHashFromPack(pack):
+        return pack[2].hex()

main.py

@@ -17,4 +17,5 @@ w3 = Web3(Web3.HTTPProvider("http://localhost:8545"))
 
 s = StickerPackContract(STICKER_PACK_CONTRACT, STICKER_PACK_ABI, w3)
 
-print(s.getAllPacks())
+packs = s.getAllPacks()
+print(packs)

pack.py

@@ -1,11 +1,16 @@
+IPFS_GATEWAY = "https://cloudflare-ipfs.com/ipfs"
+
 class StickerPack:
     # https://github.com/ethereum/EIPs/blob/master/EIPS/eip-1577.md
     # All content hashes in Sticker Pack metadata have the same prefix.
     content_hash_rgx = r'e30101701220\w+'
 
-    def __init__(self, url):
-        resp = requests.get(url)
+    def __init__(self, chash):
+        self.content_hash = chash
+
+        resp = requests.get("{}/{}".format(IPFS_GATEWAY, chash))
         resp.raise_for_status()
+
         self.image_hashes = SticketPack.parse_clj_meta(resp.text)
 
     @staticmethod