refactor contrats with aragonos

apps/token/.gitignore

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+node_modules
+build
+.cache
+dist

apps/token/.ipfsignore

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+# Git files
+.gitignore
+
+# Build files
+.cache
+node_modules
+build
+
+# Lock files
+package-lock.json
+yarn.lock
+
+# Others
+test

apps/token/README.md

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+# Aragon React Boilerplate
+
+> 🕵️ [Find more boilerplates using GitHub](https://github.com/search?q=topic:aragon-boilerplate) | 
+> ✨ [Official boilerplates](https://github.com/search?q=topic:aragon-boilerplate+org:aragon)
+
+React boilerplate for Aragon applications.
+
+This boilerplate also includes a fully working example app, complete with a background worker and a front-end in React (with Aragon UI).
+
+## Usage
+
+```sh
+aragon init app.aragonpm.eth react
+```
+
+## Running your app
+
+### Using HTTP
+
+Running your app using HTTP will allow for a faster development process of your app's front-end, as it can be hot-reloaded without the need to execute `aragon run` every time a change is made.
+
+- First start your app's development server running `npm run start:app`, and keep that process running. By default it will rebuild the app and reload the server when changes to the source are made.
+
+- After that, you can run `npm run start:aragon:http` which will compile your app's contracts, publish the app locally and create a DAO. You will need to stop it and run it again after making changes to your smart contracts.
+
+Changes to the app's background script (`app/script.js`) cannot be hot-reloaded, after making changes to the script, you will need to either restart the development server (`npm run start:app`) or rebuild the script `npm run build:script`.
+
+### Using IPFS
+
+Running your app using IPFS will mimic the production environment that will be used for running your app. `npm run start:aragon:ipfs` will run your app using IPFS. Whenever a change is made to any file in your front-end, a new version of the app needs to be published, so the command needs to be restarted.
+
+## What's in the box?
+
+### npm Scripts
+
+- **start** or **start:aragon:ipfs**: Runs your app inside a DAO served from IPFS
+- **start:aragon:http**: Runs your app inside a DAO served with HTTP (hot reloading)
+- **start:app**: Starts a development server for your app
+- **compile**: Compile the smart contracts
+- **build**: Builds the front-end and background script
+- **build:app**: Builds the front-end
+- **build:script**: Builds the background script
+- **test**: Runs tests for the contracts
+- **publish:patch**: Release a patch version to aragonPM (only frontend/content changes allowed)
+- **publish:minor**: Release a minor version to aragonPM (only frontend/content changes allowed)
+- **publish:major**: Release a major version to aragonPM (frontend **and** contract changes)
+- **versions**: Check the currently installed versions of the app
+
+### Libraries
+
+- [**@aragon/os**](https://github.com/aragon/aragonos): Aragon interfaces
+- [**@aragon/client**](https://github.com/aragon/aragon.js/tree/master/packages/aragon-client): Wrapper for Aragon application RPC
+- [**@aragon/ui**](https://github.com/aragon/aragon-ui): Aragon UI components (in React)
+
+## Publish
+
+This app has 3 environments defined in `arapp.json`:
+
+| Environment   | Network   |
+|---            |---        |
+| default       | localhost |
+| staging       | rinkeby   |
+| production    | mainnet   |
+
+Prerequisites:
+- ENS Registry address
+
+Note: the `default` environment which points to `localhost` does not have an ENS Registry address specified because the `@aragon/cli` will default the value to `0xB9462EF3441346dBc6E49236Edbb0dF207db09B7` (the ENS Registry pre-deployed on the local development chain).
+
+### Introduction to environments
+
+Environments are defined in `arapp.json`, for example `staging` points to:
+- an ENS registry (`0x314159265dd8dbb310642f98f50c066173c1259b`)
+- an APM registry (`open.aragonpm.eth`)
+- an APM repository (`app`)
+- an Ethereum network (`rinkeby`)
+- an Ethereum websockets provider (`wss://rinkeby.eth.aragon.network/ws` - to **read** from the blockchain)
+
+The `rinkeby` network is further defined in `truffle.js`, and has:
+- an Ethereum provider (to **write** to the blockchain):
+    - an address (`https://rinkeby.infura.io`)
+    - an Ethereum Account (`0xb4124cEB3451635DAcedd11767f004d8a28c6eE7`)
+    (which is the first account generated from the `DEFAULT_MNEMONIC` variable, to use a different account see [here](#Using-a-different-Ethereum-account))
+
+### Major version: content + contract
+
+Command:
+```
+npm run publish:major -- --environment staging
+```
+
+This will:
+1. _build_ the app's frontend (the output lives in `dist`)
+2. _compile_ the app's contract (the output lives in `build`)
+3. publish the app to the **staging** environment.
+
+Sample output:
+```
+ > aragon apm publish major "--environment" "staging"
+
+ ✔ Successfully published app.open.aragonpm.eth v1.0.0: 
+ ℹ Contract address: 0xE636bcA5B95e94F749F63E322a04DB59362299F1
+ ℹ Content (ipfs): QmR695Wu5KrHNec7pRP3kPvwYihABDAyVYdX5D5vwLgxCn
+ ℹ Transaction hash: 0x3d752db29cc106e9ff98b260a90615921eb32471425a29ead8cbb830fb224d8
+```
+
+Note: the contract location is defined in `arapp.json` under `path`.
+Note: you can also deploy a major version with only frontend changes by passing `--only-content`.
+
+### Minor/patch version: content only
+
+Command:
+```
+npm run publish:patch -- --environment staging
+```
+
+This will:
+1. _build_ the app's frontend (which lives in `dist`)
+2. publish the app to the **staging** environment.
+
+Sample output:
+```
+ ✔ Successfully published app.open.aragonpm.eth v1.1.1: 
+ ℹ Contract address: 0xE636bcA5B95e94F749F63E322a04DB59362299F1
+ ℹ Content (ipfs): QmUYv9cjyNVxCyAJGK2YXjkbzh6u4iW2ak81Z9obdefM1q
+ ℹ Transaction hash: 0x57864d8efd8d439008621b494b19a3e8f876a8a46b38475f9626802f0a1403c2
+```
+
+### Check published versions
+
+Command:
+```
+npm run versions -- --environment staging
+```
+
+Sample output:
+```
+ ℹ app.open.aragonpm.eth has 4 published versions
+ ✔ 1.0.0: 0xE636bcA5B95e94F749F63E322a04DB59362299F1 ipfs:QmR695Wu5KrHNec7pRP3kPvwYihABDAyVYdX5D5vwLgxCn
+ ✔ 1.1.0: 0xE636bcA5B95e94F749F63E322a04DB59362299F1 ipfs:QmSwjUZFpv2c2e9fLoxtgFrAsAmBN4DyQGJp4RcqQcW3z3
+ ✔ 1.1.1: 0xE636bcA5B95e94F749F63E322a04DB59362299F1 ipfs:QmUYv9cjyNVxCyAJGK2YXjkbzh6u4iW2ak81Z9obdefM1q
+ ✔ 2.0.0: 0x74CBbbC932d7C344FCd789Eba24BfD40e52980c9 ipfs:Qmadb3hzwLDKtb93fF367Vg1epkdsLZF4dhpapNYynjgZF
+```
+
+### Using a different Ethereum account
+
+To deploy from a different account, you can:
+- define a `~/.aragon/mnemonic.json` file
+    ```
+    {
+        "mnemonic": "explain tackle mirror kit ..."
+    }
+    ```
+    or
+- define a `~/.aragon/${network_name}_key.json` file, for example: `~/.aragon/rinkeby_key.json`
+    ```
+    {
+        "keys": [
+            "a8a54b2d8197bc0b19bb8a084031be71835580a01e70a45a13babd16c9bc1563"
+        ]
+    }
+    ```

apps/token/arapp.json

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+{
+  "roles": [
+    {
+      "name": "Mint token",
+      "id": "MINT_TOKEN_ROLE",
+      "params": []
+    }
+  ],
+  "environments": {
+    "default": {
+      "network": "development",
+      "appName": "token.aragonpm.eth"
+    },
+    "staging": {
+      "registry": "0x98df287b6c145399aaa709692c8d308357bc085d",
+      "appName": "token.open.aragonpm.eth",
+      "wsRPC": "wss://rinkeby.eth.aragon.network/ws",
+      "network": "rinkeby"
+    },
+    "production": {
+      "registry": "0x314159265dd8dbb310642f98f50c066173c1259b",
+      "appName": "token.open.aragonpm.eth",
+      "wsRPC": "wss://mainnet.eth.aragon.network/ws",
+      "network": "mainnet"
+    }
+  },
+  "path": "contracts/Token.sol"
+}

apps/token/contracts/ERC20Token.sol

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+pragma solidity ^0.4.24;
+
+import "@aragon/os/contracts/lib/math/SafeMath.sol";
+
+/**
+ * beause ERC20.sol conflicts with the aragon ERC20.sol this is copied and modified from: 
+ * https://github.com/OpenZeppelin/openzeppelin-solidity/blob/master/contracts/token/ERC20/ERC20.sol
+ * @title Standard ERC20 token
+ *
+ * @dev Implementation of the basic standard token.
+ * https://eips.ethereum.org/EIPS/eip-20
+ * Originally based on code by FirstBlood:
+ * https://github.com/Firstbloodio/token/blob/master/smart_contract/FirstBloodToken.sol
+ *
+ * This implementation emits additional Approval events, allowing applications to reconstruct the allowance status for
+ * all accounts just by listening to said events. Note that this isn't required by the specification, and other
+ * compliant implementations may not do it.
+ */
+contract ERC20Token {
+    using SafeMath for uint256;
+
+    mapping (address => uint256) public _balances;
+
+    mapping (address => mapping (address => uint256)) private _allowed;
+
+    uint256 public _totalSupply;
+
+    string public name;
+    string public symbol;
+    uint8 public decimals;
+
+    event Transfer(address indexed from, address indexed to, uint256 value);
+
+    event Approval(address indexed owner, address indexed spender, uint256 value);
+
+    /**
+     * @dev Total number of tokens in existence
+     */
+    function totalSupply() public view returns (uint256) {
+        return _totalSupply;
+    }
+
+    /**
+     * @dev Gets the balance of the specified address.
+     * @param owner The address to query the balance of.
+     * @return A uint256 representing the amount owned by the passed address.
+     */
+    function balanceOf(address owner) public view returns (uint256) {
+        return _balances[owner];
+    }
+
+    /**
+     * @dev Function to check the amount of tokens that an owner allowed to a spender.
+     * @param owner address The address which owns the funds.
+     * @param spender address The address which will spend the funds.
+     * @return A uint256 specifying the amount of tokens still available for the spender.
+     */
+    function allowance(address owner, address spender) public view returns (uint256) {
+        return _allowed[owner][spender];
+    }
+
+    /**
+     * @dev Transfer token to a specified address
+     * @param to The address to transfer to.
+     * @param value The amount to be transferred.
+     */
+    function transfer(address to, uint256 value) public returns (bool) {
+        _transfer(msg.sender, to, value);
+        return true;
+    }
+
+    /**
+     * @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.
+     * Beware that changing an allowance with this method brings the risk that someone may use both the old
+     * and the new allowance by unfortunate transaction ordering. One possible solution to mitigate this
+     * race condition is to first reduce the spender's allowance to 0 and set the desired value afterwards:
+     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
+     * @param spender The address which will spend the funds.
+     * @param value The amount of tokens to be spent.
+     */
+    function approve(address spender, uint256 value) public returns (bool) {
+        _approve(msg.sender, spender, value);
+        return true;
+    }
+
+    /**
+     * @dev Transfer tokens from one address to another.
+     * Note that while this function emits an Approval event, this is not required as per the specification,
+     * and other compliant implementations may not emit the event.
+     * @param from address The address which you want to send tokens from
+     * @param to address The address which you want to transfer to
+     * @param value uint256 the amount of tokens to be transferred
+     */
+    function transferFrom(address from, address to, uint256 value) public returns (bool) {
+        _transfer(from, to, value);
+        _approve(from, msg.sender, _allowed[from][msg.sender].sub(value));
+        return true;
+    }
+
+    /**
+     * @dev Increase the amount of tokens that an owner allowed to a spender.
+     * approve should be called when _allowed[msg.sender][spender] == 0. To increment
+     * allowed value is better to use this function to avoid 2 calls (and wait until
+     * the first transaction is mined)
+     * From MonolithDAO Token.sol
+     * Emits an Approval event.
+     * @param spender The address which will spend the funds.
+     * @param addedValue The amount of tokens to increase the allowance by.
+     */
+    function increaseAllowance(address spender, uint256 addedValue) public returns (bool) {
+        _approve(msg.sender, spender, _allowed[msg.sender][spender].add(addedValue));
+        return true;
+    }
+
+    /**
+     * @dev Decrease the amount of tokens that an owner allowed to a spender.
+     * approve should be called when _allowed[msg.sender][spender] == 0. To decrement
+     * allowed value is better to use this function to avoid 2 calls (and wait until
+     * the first transaction is mined)
+     * From MonolithDAO Token.sol
+     * Emits an Approval event.
+     * @param spender The address which will spend the funds.
+     * @param subtractedValue The amount of tokens to decrease the allowance by.
+     */
+    function decreaseAllowance(address spender, uint256 subtractedValue) public returns (bool) {
+        _approve(msg.sender, spender, _allowed[msg.sender][spender].sub(subtractedValue));
+        return true;
+    }
+
+    /**
+     * @dev Transfer token for a specified addresses
+     * @param from The address to transfer from.
+     * @param to The address to transfer to.
+     * @param value The amount to be transferred.
+     */
+    function _transfer(address from, address to, uint256 value) internal {
+        require(to != address(0));
+
+        _balances[from] = _balances[from].sub(value);
+        _balances[to] = _balances[to].add(value);
+        emit Transfer(from, to, value);
+    }
+
+    /**
+     * @dev Internal function that mints an amount of the token and assigns it to
+     * an account. This encapsulates the modification of balances such that the
+     * proper events are emitted.
+     * @param account The account that will receive the created tokens.
+     * @param value The amount that will be created.
+     */
+    function _mint(address account, uint256 value) internal {
+        require(account != address(0), 'invalid address');
+
+        _totalSupply = _totalSupply.add(value);
+        _balances[account] = _balances[account].add(value);
+        emit Transfer(address(0), account, value);
+    }
+
+    /**
+     * @dev Approve an address to spend another addresses' tokens.
+     * @param owner The address that owns the tokens.
+     * @param spender The address that will spend the tokens.
+     * @param value The number of tokens that can be spent.
+     */
+    function _approve(address owner, address spender, uint256 value) internal {
+        require(spender != address(0));
+        require(owner != address(0));
+
+        _allowed[owner][spender] = value;
+        emit Approval(owner, spender, value);
+    }
+
+}

apps/token/contracts/Token.sol

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+pragma solidity ^0.4.24;
+
+import "@aragon/os/contracts/apps/AragonApp.sol";
+import "./ERC20Token.sol";
+
+contract Token is ERC20Token, AragonApp {
+  bytes32 public constant MINT_TOKEN_ROLE = keccak256("MINT_TOKEN_ROLE");
+
+  event LogMint(address indexed recipient, uint256 amount, uint256 contributionId);
+  
+  function initialize() public onlyInit {
+    initialized();
+  }
+
+  function mintFor(address contributorAccount, uint256 amount, uint256 contributionId) public isInitialized auth(MINT_TOKEN_ROLE) {
+    _mint(contributorAccount, amount);
+    emit LogMint(contributorAccount, amount, contributionId);
+  }
+
+}

apps/token/contracts/misc/Migrations.sol

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+pragma solidity ^0.4.4;
+
+contract Migrations {
+  address public owner;
+  uint public last_completed_migration;
+
+  modifier restricted() {
+    if (msg.sender == owner) _;
+  }
+
+  function Migrations() {
+    owner = msg.sender;
+  }
+
+  function setCompleted(uint completed) restricted {
+    last_completed_migration = completed;
+  }
+
+  function upgrade(address new_address) restricted {
+    Migrations upgraded = Migrations(new_address);
+    upgraded.setCompleted(last_completed_migration);
+  }
+}

apps/token/manifest.json

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+{
+  "name": "Token",
+  "description": "Kredits token app"
+}

apps/token/migrations/1_initial_migration.js

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+var Migrations = artifacts.require('./Migrations.sol')
+
+module.exports = function (deployer) {
+  deployer.deploy(Migrations)
+}

apps/token/migrations/2_deploy_contracts.js

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+var Token = artifacts.require('Token.sol')
+
+module.exports = function (deployer) {
+  deployer.deploy(Token)
+}

apps/token/package.json

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+{
+  "name": "kredits-token",
+  "version": "1.0.0",
+  "description": "",
+  "dependencies": {
+    "@aragon/os": "^4.1.0",
+    "@aragon/cli": "^5.5.0"
+  },
+  "devDependencies": {
+  },
+  "scripts": {
+    "start": "npm run start:aragon:ipfs",
+    "start:aragon:ipfs": "aragon run",
+    "start:aragon:http": "aragon run --http localhost:8001 --http-served-from ./dist",
+    "start:app": "",
+    "test": "aragon contracts test",
+    "compile": "aragon contracts compile",
+    "sync-assets": "",
+    "build:app": "",
+    "build:script": "",
+    "build": "",
+    "publish:patch": "aragon apm publish patch",
+    "publish:minor": "aragon apm publish minor",
+    "publish:major": "aragon apm publish major",
+    "versions": "aragon apm versions"
+  },
+  "keywords": []
+}

apps/token/test/app.js

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+const CounterApp = artifacts.require('CounterApp.sol')
+
+contract('CounterApp', (accounts) => {
+  it('should be tested')
+})

apps/token/truffle.js

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+/**
+ * https://github.com/aragon/aragonOS/blob/v4.0.0/truffle-config.js
+ */
+const homedir = require('homedir')
+const path = require('path')
+
+const HDWalletProvider = require('truffle-hdwallet-provider')
+const HDWalletProviderPrivkey = require('truffle-hdwallet-provider-privkey')
+
+const DEFAULT_MNEMONIC = 'explain tackle mirror kit van hammer degree position ginger unfair soup bonus'
+
+const defaultRPC = (network) =>
+  `https://${network}.infura.io`
+
+const configFilePath = (filename) =>
+  path.join(homedir(), `.aragon/${filename}`)
+
+const mnemonic = () => {
+  try {
+    return require(configFilePath('mnemonic.json')).mnemonic
+  } catch (e) {
+    return DEFAULT_MNEMONIC
+  }
+}
+
+const settingsForNetwork = (network) => {
+  try {
+    return require(configFilePath(`${network}_key.json`))
+  } catch (e) {
+    return { }
+  }
+}
+
+// Lazily loaded provider
+const providerForNetwork = (network) => (
+  () => {
+    let { rpc, keys } = settingsForNetwork(network)
+    rpc = rpc || defaultRPC(network)
+
+    if (!keys || keys.length == 0) {
+      return new HDWalletProvider(mnemonic(), rpc)
+    }
+
+    return new HDWalletProviderPrivkey(keys, rpc)
+  }
+)
+module.exports = {
+  networks: {
+    development: {
+      host: 'localhost',
+      port: 8545,
+      network_id: '*'
+    },
+    mainnet: {
+      network_id: 1,
+      provider: providerForNetwork('mainnet')
+    },
+    rinkeby: {
+      network_id: 4,
+      provider: providerForNetwork('rinkeby')
+    }
+  }
+}