Prepare subgraph for The Decentralized Graph Network

package.json

@@ -11,6 +11,7 @@
     "prepare:xdai": "mustache config/xdai.json subgraph.template.yaml > subgraph.yaml",
     "prepare:sokol": "mustache config/sokol.json subgraph.template.yaml > subgraph.yaml",
 
+    "deploy:studio": "graph deploy --studio poap-ethereum-mainnet",
     "deploy:mainnet": "graph deploy --node https://api.thegraph.com/deploy/ --ipfs https://api.thegraph.com/ipfs/ poap-xyz/poap",
     "deploy:ropsten": "graph deploy --node https://api.thegraph.com/deploy/ --ipfs https://api.thegraph.com/ipfs/ poap-xyz/poap-ropsten",
     "deploy:kovan": "graph deploy --node https://api.thegraph.com/deploy/ --ipfs https://api.thegraph.com/ipfs/ poap-xyz/poap-kovan",
@@ -22,8 +23,8 @@
     "deploy-local": "graph deploy --node http://localhost:8020/ --ipfs http://localhost:5001 poap-xyz/poap"
   },
   "dependencies": {
-    "@graphprotocol/graph-cli": "0.18.0",
-    "@graphprotocol/graph-ts": "0.18.0"
+    "@graphprotocol/graph-cli": "0.26.0",
+    "@graphprotocol/graph-ts": "0.24.1"
   },
   "devDependencies": {
     "mustache": "^4.0.1"

src/mapping.ts

@@ -26,16 +26,16 @@ export function handleEventToken(ev: EventTokenEvent): void
 {
   let event = Event.load(ev.params.eventId.toString());
   // This handler always run after the transfer handler
-  let token = Token.load(ev.params.tokenId.toString());
+  let token = Token.load(ev.params.tokenId.toString())!;
   if (event == null) {
     event               = new Event(ev.params.eventId.toString());
     event.tokenCount    = BigInt.fromI32(0);
     event.transferCount = BigInt.fromI32(0);
     event.created       = ev.block.timestamp
   }
 
-  event.tokenCount    += BigInt.fromI32(1);
-  event.transferCount += BigInt.fromI32(1);
+  event.tokenCount = event.tokenCount.plus(BigInt.fromI32(1));
+  event.transferCount = event.transferCount.plus(BigInt.fromI32(1));
   token.event         = event.id;
   event.save();
   token.save();
@@ -55,15 +55,15 @@ export function handleTransfer(ev: TransferEvent): void {
   // Don't subtracts from the ZERO_ADDRESS (it's the one that mint the token)
   // Avoid negative values
   if(from.id != ZERO_ADDRESS) {
-    from.tokensOwned -= BigInt.fromI32(1);
+    from.tokensOwned = from.tokensOwned.minus(BigInt.fromI32(1));
   }
   from.save();
 
   if (to == null) {
     to              = new Account(ev.params.to.toHex());
     to.tokensOwned  = BigInt.fromI32(0);
   }
-  to.tokensOwned += BigInt.fromI32(1);
+  to.tokensOwned = to.tokensOwned.plus(BigInt.fromI32(1));
   to.save();
 
   if (token == null) {
@@ -72,24 +72,29 @@ export function handleTransfer(ev: TransferEvent): void {
     token.created       = ev.block.timestamp
   }
   token.owner = to.id;
-  token.transferCount += BigInt.fromI32(1);
+  token.transferCount = token.transferCount.plus(BigInt.fromI32(1));
   token.save();
 
-  let event = Event.load(token.event);
 
-  if(event != null) {
-    // Add one transfer
-    event.transferCount += BigInt.fromI32(1);
+  if (token.event != null) {
+    let event = Event.load(token.event as string);
 
-    // Burning the token
-    if(to.id == ZERO_ADDRESS) {
-      event.tokenCount    -= BigInt.fromI32(1);
-      // Subtract all the transfers from the burned token
-      event.transferCount -= token.transferCount;
+    if(event != null) {
+      // Add one transfer
+      event.transferCount = event.transferCount.plus(BigInt.fromI32(1));
+
+      // Burning the token
+      if(to.id == ZERO_ADDRESS) {
+        event.tokenCount = event.tokenCount.minus(BigInt.fromI32(1));
+        // Subtract all the transfers from the burned token
+        event.transferCount = event.transferCount.minus(token.transferCount);
+      }
+      event.save();
     }
-    event.save();
   }
 
+
+
   transfer.token       = token.id;
   transfer.from        = from.id;
   transfer.to          = to.id;

subgraph.template.yaml

@@ -13,7 +13,7 @@ dataSources:
       startBlock: {{ startBlock }}
     mapping:
       kind: ethereum/events
-      apiVersion: 0.0.4
+      apiVersion: 0.0.5
       language: wasm/assemblyscript
       entities:
         - EventToken