w8 · tx · AfK···ZfR

tx · AfKAA2v1T795U8PvjFDsqwSb2feVZsYTf5bCkzptxZfR

3PFQjjDMiZKQZdu5JqTHD7HwgSXyp9Rw9By:  -0.01400000 Waves

2022.05.25 23:09 [3133162] smart account 3PFQjjDMiZKQZdu5JqTHD7HwgSXyp9Rw9By > SELF 0.00000000 Waves

{
    "type": 13,
    "id": "AfKAA2v1T795U8PvjFDsqwSb2feVZsYTf5bCkzptxZfR",
    "fee": 1400000,
    "feeAssetId": null,
    "timestamp": 1653509363574,
    "version": 2,
    "chainId": 87,
    "sender": "3PFQjjDMiZKQZdu5JqTHD7HwgSXyp9Rw9By",
    "senderPublicKey": "A2fujmmHBBAFrVGCyHBHVbzEtHvDsFniNoiovp2N4fES",
    "proofs": [
        "QtiRQCr8DJbyohr7HuSKpfBCrZ7HEv33UrDaopk7GUBSXGKHr4Kx9feBATga2JqqJAqqesZSEorvN44h1dZGaxQ"
    ],
    "script": "base64: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",
    "height": 3133162,
    "applicationStatus": "succeeded",
    "spentComplexity": 0
}

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Diff: 
Old New Differences
27 27  
28 28  
29 29  @Callable(i)
30 - func createNFT (nftName,nftDesc,image,collectionName) = if (if (if (if ((toString(i.caller) != "3PMki5sHBsQb4KgDknbUwsL3YgxaCzaZnCJ"))
30 + func createNFT (nftName,nftDesc,image,collectionName) = if (if (if (if (if ((toString(i.caller) != "3PHKDCQScvSPHvdCUeucFkx5Q1xMURA9kbr"))
31 +     then (toString(i.caller) != "3PMki5sHBsQb4KgDknbUwsL3YgxaCzaZnCJ")
32 +     else false)
31 33      then (toString(i.caller) != "3P2wMCDjtxeLdfQrpR8WUe5zNeScM4UaL3o")
32 34      else false)
33 35      then (toString(i.caller) != "3P3pDosq4GCwfJkvq4yqKvvoTwmoqc9qPmo")
65 67              let partsCollection = split(partsData[0], ": ")
66 68              let collectionDomain = dropRight(drop(partsCollection[1], 1), 1)
67 69              let nftNum = tryGetInteger((("collection_" + collectionDomain) + "_size"))
68 -             let updateCollection = if ((nftNum == 1))
69 -                 then DeleteEntry((("collection_" + collectionDomain) + "_size"))
70 -                 else IntegerEntry((("collection_" + collectionDomain) + "_size"), (nftNum - 1))
70 +             if ((nftNum > 0))
71 +                 then {
72 +                     let updateCollection = if ((nftNum == 1))
73 +                         then DeleteEntry((("collection_" + collectionDomain) + "_size"))
74 +                         else IntegerEntry((("collection_" + collectionDomain) + "_size"), (nftNum - 1))
71 75  [updateCollection, Burn(assetId, 1), DeleteEntry((("nft_" + assetIdStr) + "_data")), DeleteEntry((("nft_" + assetIdStr) + "_image")), DeleteEntry((("nft_" + assetIdStr) + "_issuer")), DeleteEntry(((("collection_" + collectionDomain) + "_assetId_") + assetIdStr))]
76 +                     }
77 +                 else throw("Ivalid collection name")
72 78              }
73 79          else throw("Ivalid NFT attached")
74 80      }
Full: 
Old New Differences
1 1  {-# STDLIB_VERSION 5 #-}
2 2  {-# SCRIPT_TYPE ACCOUNT #-}
3 3  {-# CONTENT_TYPE DAPP #-}
4 4  func tryGetInteger (key) = match getInteger(this, key) {
5 5      case b: Int => 
6 6          b
7 7      case _ => 
8 8          0
9 9  }
10 10  
11 11  
12 12  func tryGetString (key) = match getString(this, key) {
13 13      case b: String => 
14 14          b
15 15      case _ => 
16 16          ""
17 17  }
18 18  
19 19  
20 20  func checkNFT (asset) = if (if (if ((asset.issuer.bytes == this.bytes))
21 21      then (asset.decimals == 0)
22 22      else false)
23 23      then (asset.reissuable == false)
24 24      else false)
25 25      then (asset.quantity == 1)
26 26      else false
27 27  
28 28  
29 29  @Callable(i)
30 - func createNFT (nftName,nftDesc,image,collectionName) = if (if (if (if ((toString(i.caller) != "3PMki5sHBsQb4KgDknbUwsL3YgxaCzaZnCJ"))
30 + func createNFT (nftName,nftDesc,image,collectionName) = if (if (if (if (if ((toString(i.caller) != "3PHKDCQScvSPHvdCUeucFkx5Q1xMURA9kbr"))
31 +     then (toString(i.caller) != "3PMki5sHBsQb4KgDknbUwsL3YgxaCzaZnCJ")
32 +     else false)
31 33      then (toString(i.caller) != "3P2wMCDjtxeLdfQrpR8WUe5zNeScM4UaL3o")
32 34      else false)
33 35      then (toString(i.caller) != "3P3pDosq4GCwfJkvq4yqKvvoTwmoqc9qPmo")
34 36      else false)
35 37      then (toString(i.caller) != "3PPgeYTWMRZ7S7jSLpnVuKKB9r6XuDk3ndC")
36 38      else false)
37 39      then throw("issuance of new NFTs is limited")
38 40      else if ((indexOf(image, "https://") != 0))
39 41          then throw("https link to image required")
40 42          else {
41 43              let asset = Issue(nftName, nftDesc, 1, 0, false, unit, 0)
42 44              let assetId = calculateAssetId(asset)
43 45              let assetIdStr = toBase58String(assetId)
44 46              let collectionDomain = ((toString(i.caller) + "_") + (if ((size(collectionName) > 0))
45 47                  then collectionName
46 48                  else "basic"))
47 49              let nftNum = (tryGetInteger((("collection_" + collectionDomain) + "_size")) + 1)
48 50              $Tuple2([StringEntry((("nft_" + assetIdStr) + "_data"), (((("{'collection': '" + collectionDomain) + "', 'num': ") + toString(nftNum)) + "}")), StringEntry((("nft_" + assetIdStr) + "_image"), image), StringEntry((("nft_" + assetIdStr) + "_issuer"), toString(i.caller)), IntegerEntry((("collection_" + collectionDomain) + "_size"), nftNum), StringEntry(((("collection_" + collectionDomain) + "_assetId_") + assetIdStr), assetIdStr), asset, ScriptTransfer(i.caller, 1, assetId)], assetIdStr)
49 51              }
50 52  
51 53  
52 54  
53 55  @Callable(i)
54 56  func burnNFT () = {
55 57      let assetId = value(value(i.payments[0]).assetId)
56 58      let asset = value(assetInfo(assetId))
57 59      if (if ((value(i.payments[0]).amount == 1))
58 60          then checkNFT(asset)
59 61          else false)
60 62          then {
61 63              let assetIdStr = toBase58String(assetId)
62 64              let issuer = tryGetString((("nft_" + assetIdStr) + "_issuer"))
63 65              let data = tryGetString((("nft_" + assetIdStr) + "_data"))
64 66              let partsData = split(data, " ,")
65 67              let partsCollection = split(partsData[0], ": ")
66 68              let collectionDomain = dropRight(drop(partsCollection[1], 1), 1)
67 69              let nftNum = tryGetInteger((("collection_" + collectionDomain) + "_size"))
68 -             let updateCollection = if ((nftNum == 1))
69 -                 then DeleteEntry((("collection_" + collectionDomain) + "_size"))
70 -                 else IntegerEntry((("collection_" + collectionDomain) + "_size"), (nftNum - 1))
70 +             if ((nftNum > 0))
71 +                 then {
72 +                     let updateCollection = if ((nftNum == 1))
73 +                         then DeleteEntry((("collection_" + collectionDomain) + "_size"))
74 +                         else IntegerEntry((("collection_" + collectionDomain) + "_size"), (nftNum - 1))
71 75  [updateCollection, Burn(assetId, 1), DeleteEntry((("nft_" + assetIdStr) + "_data")), DeleteEntry((("nft_" + assetIdStr) + "_image")), DeleteEntry((("nft_" + assetIdStr) + "_issuer")), DeleteEntry(((("collection_" + collectionDomain) + "_assetId_") + assetIdStr))]
76 +                     }
77 +                 else throw("Ivalid collection name")
72 78              }
73 79          else throw("Ivalid NFT attached")
74 80      }
75 81  
76 82  
77 83  @Verifier(tx)
78 84  func verify () = sigVerify(tx.bodyBytes, tx.proofs[0], tx.senderPublicKey)
79 85

Old	New		Differences
27	27
28	28
29	29		@Callable(i)
30		-	func createNFT (nftName,nftDesc,image,collectionName) = if (if (if (if ((toString(i.caller) != "3PMki5sHBsQb4KgDknbUwsL3YgxaCzaZnCJ"))
	30	+	func createNFT (nftName,nftDesc,image,collectionName) = if (if (if (if (if ((toString(i.caller) != "3PHKDCQScvSPHvdCUeucFkx5Q1xMURA9kbr"))
	31	+	then (toString(i.caller) != "3PMki5sHBsQb4KgDknbUwsL3YgxaCzaZnCJ")
	32	+	else false)
31	33		then (toString(i.caller) != "3P2wMCDjtxeLdfQrpR8WUe5zNeScM4UaL3o")
32	34		else false)
33	35		then (toString(i.caller) != "3P3pDosq4GCwfJkvq4yqKvvoTwmoqc9qPmo")

65	67		let partsCollection = split(partsData[0], ": ")
66	68		let collectionDomain = dropRight(drop(partsCollection[1], 1), 1)
67	69		let nftNum = tryGetInteger((("collection_" + collectionDomain) + "_size"))
68		-	let updateCollection = if ((nftNum == 1))
69		-	then DeleteEntry((("collection_" + collectionDomain) + "_size"))
70		-	else IntegerEntry((("collection_" + collectionDomain) + "_size"), (nftNum - 1))
	70	+	if ((nftNum > 0))
	71	+	then {
	72	+	let updateCollection = if ((nftNum == 1))
	73	+	then DeleteEntry((("collection_" + collectionDomain) + "_size"))
	74	+	else IntegerEntry((("collection_" + collectionDomain) + "_size"), (nftNum - 1))
71	75		[updateCollection, Burn(assetId, 1), DeleteEntry((("nft_" + assetIdStr) + "_data")), DeleteEntry((("nft_" + assetIdStr) + "_image")), DeleteEntry((("nft_" + assetIdStr) + "_issuer")), DeleteEntry(((("collection_" + collectionDomain) + "_assetId_") + assetIdStr))]
	76	+	}
	77	+	else throw("Ivalid collection name")
72	78		}
73	79		else throw("Ivalid NFT attached")
74	80		}

Old	New		Differences
1	1		{-# STDLIB_VERSION 5 #-}
2	2		{-# SCRIPT_TYPE ACCOUNT #-}
3	3		{-# CONTENT_TYPE DAPP #-}
4	4		func tryGetInteger (key) = match getInteger(this, key) {
5	5		case b: Int =>
6	6		b
7	7		case _ =>
8	8		0
9	9		}
10	10
11	11
12	12		func tryGetString (key) = match getString(this, key) {
13	13		case b: String =>
14	14		b
15	15		case _ =>
16	16		""
17	17		}
18	18
19	19
20	20		func checkNFT (asset) = if (if (if ((asset.issuer.bytes == this.bytes))
21	21		then (asset.decimals == 0)
22	22		else false)
23	23		then (asset.reissuable == false)
24	24		else false)
25	25		then (asset.quantity == 1)
26	26		else false
27	27
28	28
29	29		@Callable(i)
30		-	func createNFT (nftName,nftDesc,image,collectionName) = if (if (if (if ((toString(i.caller) != "3PMki5sHBsQb4KgDknbUwsL3YgxaCzaZnCJ"))
	30	+	func createNFT (nftName,nftDesc,image,collectionName) = if (if (if (if (if ((toString(i.caller) != "3PHKDCQScvSPHvdCUeucFkx5Q1xMURA9kbr"))
	31	+	then (toString(i.caller) != "3PMki5sHBsQb4KgDknbUwsL3YgxaCzaZnCJ")
	32	+	else false)
31	33		then (toString(i.caller) != "3P2wMCDjtxeLdfQrpR8WUe5zNeScM4UaL3o")
32	34		else false)
33	35		then (toString(i.caller) != "3P3pDosq4GCwfJkvq4yqKvvoTwmoqc9qPmo")
34	36		else false)
35	37		then (toString(i.caller) != "3PPgeYTWMRZ7S7jSLpnVuKKB9r6XuDk3ndC")
36	38		else false)
37	39		then throw("issuance of new NFTs is limited")
38	40		else if ((indexOf(image, "https://") != 0))
39	41		then throw("https link to image required")
40	42		else {
41	43		let asset = Issue(nftName, nftDesc, 1, 0, false, unit, 0)
42	44		let assetId = calculateAssetId(asset)
43	45		let assetIdStr = toBase58String(assetId)
44	46		let collectionDomain = ((toString(i.caller) + "_") + (if ((size(collectionName) > 0))
45	47		then collectionName
46	48		else "basic"))
47	49		let nftNum = (tryGetInteger((("collection_" + collectionDomain) + "_size")) + 1)
48	50		$Tuple2([StringEntry((("nft_" + assetIdStr) + "_data"), (((("{'collection': '" + collectionDomain) + "', 'num': ") + toString(nftNum)) + "}")), StringEntry((("nft_" + assetIdStr) + "_image"), image), StringEntry((("nft_" + assetIdStr) + "_issuer"), toString(i.caller)), IntegerEntry((("collection_" + collectionDomain) + "_size"), nftNum), StringEntry(((("collection_" + collectionDomain) + "_assetId_") + assetIdStr), assetIdStr), asset, ScriptTransfer(i.caller, 1, assetId)], assetIdStr)
49	51		}
50	52
51	53
52	54
53	55		@Callable(i)
54	56		func burnNFT () = {
55	57		let assetId = value(value(i.payments[0]).assetId)
56	58		let asset = value(assetInfo(assetId))
57	59		if (if ((value(i.payments[0]).amount == 1))
58	60		then checkNFT(asset)
59	61		else false)
60	62		then {
61	63		let assetIdStr = toBase58String(assetId)
62	64		let issuer = tryGetString((("nft_" + assetIdStr) + "_issuer"))
63	65		let data = tryGetString((("nft_" + assetIdStr) + "_data"))
64	66		let partsData = split(data, " ,")
65	67		let partsCollection = split(partsData[0], ": ")
66	68		let collectionDomain = dropRight(drop(partsCollection[1], 1), 1)
67	69		let nftNum = tryGetInteger((("collection_" + collectionDomain) + "_size"))
68		-	let updateCollection = if ((nftNum == 1))
69		-	then DeleteEntry((("collection_" + collectionDomain) + "_size"))
70		-	else IntegerEntry((("collection_" + collectionDomain) + "_size"), (nftNum - 1))
	70	+	if ((nftNum > 0))
	71	+	then {
	72	+	let updateCollection = if ((nftNum == 1))
	73	+	then DeleteEntry((("collection_" + collectionDomain) + "_size"))
	74	+	else IntegerEntry((("collection_" + collectionDomain) + "_size"), (nftNum - 1))
71	75		[updateCollection, Burn(assetId, 1), DeleteEntry((("nft_" + assetIdStr) + "_data")), DeleteEntry((("nft_" + assetIdStr) + "_image")), DeleteEntry((("nft_" + assetIdStr) + "_issuer")), DeleteEntry(((("collection_" + collectionDomain) + "_assetId_") + assetIdStr))]
	76	+	}
	77	+	else throw("Ivalid collection name")
72	78		}
73	79		else throw("Ivalid NFT attached")
74	80		}
75	81
76	82
77	83		@Verifier(tx)
78	84		func verify () = sigVerify(tx.bodyBytes, tx.proofs[0], tx.senderPublicKey)
79	85

github/deemru/w8io/6500d08 
41.44 ms ◑