Initial commit from Create Eth App

packages/subgraph/README.md

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+## @my-app/subgraph
+
+The Graph is a tool for for indexing events emitted on the Ethereum blockchain. It provides you with an easy-to-use GraphQL API.
+
+## Available Scripts
+
+In the project directory, you can run:
+
+### Subgraph
+
+#### `yarn codegen`
+
+Generates AssemblyScript types for smart contract ABIs and the subgraph schema.
+
+#### `yarn build`
+
+Compiles the subgraph to WebAssembly.
+
+#### `yarn auth`
+
+Before deploying your subgraph, you need to sign up on the
+[Graph Explorer](https://thegraph.com/explorer/). There, you will be given an access token. Drop it in the command
+below:
+
+```sh
+GRAPH_ACCESS_TOKEN=your-access-token-here yarn subgraph:auth
+```
+
+#### `yarn deploy`
+
+Deploys the subgraph to the official Graph Node.<br/>
+
+Replace `paulrberg/create-eth-app` in the package.json script with your subgraph's name.
+
+You may also want to [read more about the hosted service](https://thegraph.com/docs/quick-start#hosted-service).
+
+## Learn More
+
+To learn The Graph, check out the [The Graph documentation](https://thegraph.com/docs).
+
+---
+
+1. Generate types
+2. Build distributable files
+3. Deploy to the remote API
+
+## Learn More
+
+You can learn more in the [The Graph documentation](https://thegraph.com/docs).<br/>
+
+Also consider joining [The Graph Discord server](https://discord.gg/vtvv7FP), where you can seek out help.
+
+## Common Errors
+
+### Failed to Compile
+
+> ✖ Failed to compile subgraph: Failed to compile data source mapping: Import file 'src/types/schema.ts' not found.
+> Error: Failed to compile data source mapping: Import file 'src/types/schema.ts' not found.
+
+Run the `yarn subgraph` and this error will go away.
+
+### No Access Token
+
+> ✖ No access token provided
+
+Make sure that you followed the instructions listed above for [yarn auth](#yarn-auth).
+
+### Failed to Deploy
+
+> ✖ Failed to deploy to Graph node https://api.thegraph.com/deploy/: Invalid account name or access token
+
+Make sure that you:
+
+1. Signed up on the [Graph Explorer](https://thegraph.com/explorer)
+2. Followed the instructions listed above for [yarn auth](#yarn-auth)
+3. Replaced `paulrberg/create-eth-app` with your subgraph's name

packages/subgraph/package.json

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+{
+  "name": "@my-app/subgraph",
+  "version": "1.0.0",
+  "dependencies": {
+    "@graphprotocol/graph-cli": "0.28.0",
+    "@graphprotocol/graph-ts": "0.26.0"
+  },
+  "license": "MIT",
+  "scripts": {
+    "auth": "graph auth https://api.thegraph.com/ $GRAPH_ACCESS_TOKEN",
+    "build": "graph build",
+    "codegen": "graph codegen --output-dir src/types/",
+    "deploy": "graph deploy paulrberg/create-eth-app --ipfs https://api.thegraph.com/ipfs/ --node https://api.thegraph.com/deploy/"
+  }
+}

packages/subgraph/schema.graphql

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+type Token @entity {
+  id: ID!
+  decimals: Int
+  name: String
+  symbol: String
+}
+
+type Transfer @entity {
+  id: ID!
+  from: String!
+  to: String!
+  value: BigInt!
+}

packages/subgraph/src/mappings/tokens.ts

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+import { Token } from "../types/schema";
+
+export function addToken(address: string): void {
+  let token: Token | null = Token.load(address);
+  if (token != null) {
+    return;
+  }
+
+  token = new Token(address);
+  if (address == "0xa6dF0C88916f3e2831A329CE46566dDfBe9E74b7") {
+    token.decimals = 18;
+    token.name = "CeaErc20";
+    token.symbol = "CEAERC20";
+  } else {
+    token.decimals = 0;
+    token.name = null;
+    token.symbol = null;
+  }
+
+  token.save();
+}

packages/subgraph/src/mappings/transfers.ts

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+import { Address } from "@graphprotocol/graph-ts";
+
+import { Transfer as TransferEvent } from "../types/CeaErc20/erc20";
+import { Transfer } from "../types/schema";
+import { addToken } from "./tokens";
+
+export function handleTransfer(event: TransferEvent): void {
+  let transactionHash: string = event.transaction.hash.toHex();
+  let transfer = new Transfer(transactionHash);
+  transfer.from = event.params.from.toHex();
+  transfer.to = event.params.to.toHex();
+  transfer.value = event.params.value;
+  transfer.save();
+
+  let to: Address | null = event.transaction.to;
+  if (to) {
+    addToken(to.toHex());
+  }
+}

packages/subgraph/subgraph.yaml

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+specVersion: 0.0.4
+description: Subgraph that indexes the blockchain data
+repository: https://github.com/sablierhq/sablier-subgraph
+schema:
+  file: ./schema.graphql
+dataSources:
+  - kind: ethereum/contract
+    name: CeaErc20
+    network: mainnet
+    source:
+      abi: erc20
+      address: "0xa6dF0C88916f3e2831A329CE46566dDfBe9E74b7"
+    mapping:
+      kind: ethereum/events
+      apiVersion: 0.0.6
+      abis:
+        - name: erc20
+          file: ../contracts/src/abis/erc20.json
+      entities:
+        - Token
+        - Transfer
+      eventHandlers:
+        - event: Transfer(indexed address,indexed address,uint256)
+          handler: handleTransfer
+      file: ./src/mappings/transfers.ts
+      language: wasm/assemblyscript