const namehash = require('eth-ens-namehash').hash;

const Token = artifacts.require("Token.sol");

const getContract = name => artifacts.require(name)
const { assertRevert } = require('@aragon/test-helpers/assertThrow');

const ZERO_ADDR = '0x0000000000000000000000000000000000000000';

contract('Coin app', (accounts) => {
    let kernelBase, aclBase, daoFactory, dao, acl, token;
  
    const root = accounts[0];
    const member1 = accounts[1];
  
    before(async() => {
        kernelBase = await getContract('Kernel').new(true) // petrify immediately
        aclBase = await getContract('ACL').new()
        daoFactory = await getContract('DAOFactory').new(kernelBase.address, aclBase.address, ZERO_ADDR);
        r = await daoFactory.newDAO(root)
        dao = getContract('Kernel').at(r.logs.filter(l => l.event == 'DeployDAO')[0].args.dao)
        acl = getContract('ACL').at(await dao.acl())
    
        //create dao mamnager permission for coin owner
        await acl.createPermission(
            root,
            dao.address,
            await dao.APP_MANAGER_ROLE(),
            root,
            { from: root }
        );
    
        //get new app instance from DAO
        const receipt = await dao.newAppInstance(
            '0x1234',
            (await Token.new()).address,
            0x0,
            false,
            { from: root }
        )
        token = Token.at(
            receipt.logs.filter(l => l.event == 'NewAppProxy')[0].args.proxy
        )

        //apps id
        let appsId = [];
        appsId[0] = namehash("kredits-contribution");
        appsId[1] = namehash("kredits-contributor");
        appsId[2] = namehash("kredits-proposal");
        appsId[3] = namehash("kredits-token");
    
        //init token (app)
        await token.initialize(appsId);
    
        //create token mint permission for coin owner
        await acl.createPermission(
            root,
            token.address,
            await token.MINT_TOKEN_ROLE(),
            root,
            { from: root }
        )
    
    });

    describe("Owner default space permissions", async() => {
        it('check owner is token issuer', async() => {
          let tokenIssuerPermission = await acl.hasPermission(root, token.address, await token.MINT_TOKEN_ROLE());
          assert.equal(tokenIssuerPermission, true);
        });  
    });

    describe("Token issuing", async () => {
        let name = "Kredits";
        let symbol = "₭S";
        let decimals = 18;
  
        it("check token properties", async() => {
          assert.equal(await token.name(), name);
          assert.equal(await token.symbol(), symbol);
          assert.equal(await token.decimals(), decimals);
        });
  
    });

    describe("Token minting", async() => {
        let tokenToMint = 250;
        let ether = 1000000000000000000;
  
        it("should revert when mint tokens from an address that does not have minting permission", async() => {
          return assertRevert(async() => {
            await token.mintFor(root, tokenToMint, 1, { from: member1})
            'address does not have permission to mint tokens'
          });
        });
  
        it("should revert when mint tokens to address(0)", async() => {
          return assertRevert(async() => {
            await token.mintFor(ZERO_ADDR, tokenToMint, 1, { from: root})
            'invalid contributor address'
          });
        });
  
        it("should revert when mint amount of tokens equal to 0", async() => {
          return assertRevert(async() => {
            await token.mintFor(root, 0, 1, { from: root})
            'amount to mint should be greater than zero'
          });
        });
  
        it("mint tokens", async() => {
          await token.mintFor(root, tokenToMint, 1, { from: root });
          let ownerBalance = await token.balanceOf(root);
          let totalSupply = await token.totalSupply();
          assert.equal(ownerBalance.toNumber(), tokenToMint*ether);
          assert.equal(totalSupply.toNumber(), tokenToMint*ether);
        });
    });
})