Add Azle Implementation of DIP721 NFT example

Author: dansteren

dapps/azle/dfx.json

@@ -7,6 +7,14 @@
       "build": "npx azle basic_dao",
       "wasm": ".azle/basic_dao/basic_dao.wasm",
       "gzip": false
+    },
+    "dip721_nft": {
+      "type": "custom",
+      "main": "dip721-nft/index.ts",
+      "candid": "dip721-nft/index.did",
+      "build": "npx azle dip721_nft",
+      "wasm": ".azle/dip721_nft/dip721_nft.wasm",
+      "gzip": false
     }
   }
 }

dapps/azle/dip721-nft/defaults.ts

@@ -0,0 +1,19 @@
+import { State } from "./types";
+
+export function state(): State {
+  return {
+    nfts: [],
+    custodians: new Set(),
+    operators: new Map(),
+    logo: {
+      logo_type: "",
+      data: "",
+    },
+    name: "",
+    symbol: "",
+    txid: 0n,
+    nextTxid() {
+      return ++this.txid;
+    },
+  };
+}

dapps/azle/dip721-nft/index.did

@@ -0,0 +1,22 @@
+service: (record {logo:record {data:text; logo_type:text}; name:text; custodians:opt vec principal; symbol:text}) -> {
+    approveDip721: (principal, nat64) -> (variant {Ok:nat; Err:variant {ZeroAddress; InvalidTokenId; Unauthorized; Other}});
+    balanceOfDip721: (principal) -> (nat64) query;
+    burnDip721: (nat64) -> (variant {Ok:nat; Err:variant {ZeroAddress; InvalidTokenId; Unauthorized; Other}});
+    isApprovedForAllDip721: (principal) -> (bool) query;
+    is_custodian: (principal) -> (bool) query;
+    mintDip721: (principal, vec record {data:vec nat8; key_val_data:vec record {text; variant {Nat64Content:nat64; Nat32Content:nat32; Nat8Content:nat8; NatContent:nat; Nat16Content:nat16; BlobContent:vec nat8; TextContent:text}}; purpose:variant {Preview; Rendered}}) -> (variant {Ok:record {id:nat; token_id:nat64}; Err:variant {Unauthorized}});
+    nameDip721: () -> (text) query;
+    ownerOfDip721: (nat64) -> (variant {Ok:principal; Err:variant {ZeroAddress; InvalidTokenId; Unauthorized; Other}}) query;
+    safeTransferFromDip721: (principal, principal, nat64) -> (variant {Ok:nat; Err:variant {ZeroAddress; InvalidTokenId; Unauthorized; Other}});
+    safeTransferFromNotifyDip721: (principal, principal, nat64, vec nat8) -> (variant {Ok:nat; Err:variant {ZeroAddress; InvalidTokenId; Unauthorized; Other}});
+    setApprovalForAllDip721: (principal, bool) -> (variant {Ok:nat; Err:variant {ZeroAddress; InvalidTokenId; Unauthorized; Other}});
+    set_custodian: (principal, bool) -> (variant {Ok:bool; Err:variant {ZeroAddress; InvalidTokenId; Unauthorized; Other}});
+    set_logo: (record {data:text; logo_type:text}) -> (variant {Ok:bool; Err:variant {ZeroAddress; InvalidTokenId; Unauthorized; Other}});
+    set_name: (text) -> (variant {Ok:bool; Err:variant {ZeroAddress; InvalidTokenId; Unauthorized; Other}});
+    set_symbol: (text) -> (variant {Ok:bool; Err:variant {ZeroAddress; InvalidTokenId; Unauthorized; Other}});
+    supportedInterfacesDip721: () -> (vec variant {Burn; Mint; Approval; TransactionHistory; TransferNotification}) query;
+    symbolDip721: () -> (text) query;
+    totalSupplyDip721: () -> (nat64) query;
+    transferFromDip721: (principal, principal, nat64) -> (variant {Ok:nat; Err:variant {ZeroAddress; InvalidTokenId; Unauthorized; Other}});
+    transferFromNotifyDip721: (principal, principal, nat64, vec nat8) -> (variant {Ok:nat; Err:variant {ZeroAddress; InvalidTokenId; Unauthorized; Other}});
+}