const { web3 } = require("hardhat");
const { expect } = require("chai");
const { ethers } = require("hardhat");
const { defaultAbiCoder } = require("ethers/lib/utils");
const { isConstructorDeclaration } = require("typescript");

var ToBig = (x) => ethers.BigNumber.from(x);
let ETH = ethers.BigNumber.from(10).pow(18);

describe("Git3 Test", function () {
  it("upload/download/remove", async function () {
    const Git3 = await ethers.getContractFactory("Git3Hub");
    const git3 = await Git3.deploy();
    await git3.deployed();

    let singer;
    [singer] = await ethers.getSigners();
    const repoName = Buffer.from("test");

    await git3.createRepo(repoName);

    await git3.upload(repoName, "0x616263", "0x112233");
    expect(await git3.download(repoName, "0x616263")).to.eql([
      "0x112233",
      true,
    ]);

    let data = Array.from({ length: 40 }, () =>
      Math.floor(Math.random() * 256)
    );

    await git3.upload(repoName, "0x616263", data);
    expect(await git3.download(repoName, "0x616263")).to.eql([
      ethers.utils.hexlify(data),
      true,
    ]);

    expect(await git3.size(repoName, "0x616263")).to.eql([ToBig(40), ToBig(1)]);

    await git3.remove(repoName, "0x616263");
    expect(await git3.size(repoName, "0x616263")).to.eql([ToBig(0), ToBig(0)]);
  });

  it("upload/download/remove chunks", async function () {
    const Git3 = await ethers.getContractFactory("Git3Hub");
    const git3 = await Git3.deploy();
    await git3.deployed();

    const repoName = Buffer.from("test");
    await git3.createRepo(repoName);

    expect(await git3.countChunks(repoName, "0x616263")).to.eql(ToBig(0));

    let data0 = Array.from({ length: 10 }, () =>
      Math.floor(Math.random() * 256)
    );
    await git3.uploadChunk(repoName, "0x616263", 0, data0);
    expect(await git3.download(repoName, "0x616263")).to.eql([
      ethers.utils.hexlify(data0),
      true,
    ]);

    let data1 = Array.from({ length: 20 }, () =>
      Math.floor(Math.random() * 256)
    );
    await git3.uploadChunk(repoName, "0x616263", 1, data1);
    expect(await git3.download(repoName, "0x616263")).to.eql([
      ethers.utils.hexlify(data0.concat(data1)),
      true,
    ]);

    await git3.remove(repoName, "0x616263"); // should succeed
    expect(await git3.size(repoName, "0x616263")).to.eql([ToBig(0), ToBig(0)]);
    expect(await git3.download(repoName, "0x616263")).to.eql(["0x", false]);
    expect(await git3.countChunks(repoName, "0x616263")).to.eql(ToBig(0));
  });

  it("set/update/list/remove Reference", async function () {
    const Git3 = await ethers.getContractFactory("Git3Hub");
    const git3 = await Git3.deploy();
    await git3.deployed();

    let repoName = Buffer.from("test");
    await git3.createRepo(repoName);

    function concatHexStr(s1, s2) {
      return "0x" + Buffer.concat([s1, Buffer.from("/"), s2]).toString("hex");
    }

    let key0 = Buffer.from("refs/heads/master");
    let data0 = "0xaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa";
    await git3.setRef(repoName, key0, data0);

    let key1 = Buffer.from("refs/heads/dev");
    let data1 = "0xbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb";
    await git3.setRef(repoName, key1, data1);

    let key2 = Buffer.from("refs/heads/main");
    let data2 = "0xcccccccccccccccccccccccccccccccccccccccc";
    await git3.setRef(repoName, key2, data2);

    let refs = await git3.listRefs(repoName);
    expect(refs[0]).to.eql([data0, concatHexStr(repoName, key0)]);
    expect(refs[1]).to.eql([data1, concatHexStr(repoName, key1)]);
    expect(refs[2]).to.eql([data2, concatHexStr(repoName, key2)]);
    expect(refs.length).to.eql(3);

    // check delRef
    await git3.delRef(repoName, key0);
    refs = await git3.listRefs(repoName);
    expect(refs[0]).to.eql([data2, concatHexStr(repoName, key2)]);
    expect(refs[1]).to.eql([data1, concatHexStr(repoName, key1)]);
    expect(refs.length).to.eql(2);

    await git3.delRef(repoName, key1);
    refs = await git3.listRefs(repoName);
    expect(refs[0]).to.eql([data2, concatHexStr(repoName, key2)]);
    expect(refs.length).to.eql(1);

    // check update
    let data3 = "0xdddddddddddddddddddddddddddddddddddddddd";
    await git3.setRef(repoName, key2, data3);
    refs = await git3.listRefs(repoName);
    expect(refs[0]).to.eql([data3, concatHexStr(repoName, key2)]);
  });

  it("Access Control", async function () {
    const Git3 = await ethers.getContractFactory("Git3Hub");
    const git3 = await Git3.deploy();
    await git3.deployed();

    let singer;
    let user1;
    [singer, user1] = await ethers.getSigners();
    const repoName = Buffer.from("test");

    await git3.connect(singer).createRepo(repoName);

    await expect(
      git3.connect(user1).upload(repoName, "0x616263", "0x112233")
    ).to.be.revertedWith("only owner");
    await expect(
      git3.connect(user1).uploadChunk(repoName, "0x616263", 0, "0x112233")
    ).to.be.revertedWith("only owner");
    await expect(
      git3
        .connect(user1)
        .setRef(
          repoName,
          "0x616263",
          "0xaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
        )
    ).to.be.revertedWith("only owner");

    await git3.connect(singer).upload(repoName, "0x616263", "0x112233");
    expect(await git3.download(repoName, "0x616263")).to.eql([
      "0x112233",
      true,
    ]);
    await git3
      .connect(singer)
      .setRef(
        repoName,
        "0x616263",
        "0xaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
      );

    await expect(
      git3.connect(user1).remove(repoName, "0x616263")
    ).to.be.revertedWith("only owner");
    await expect(
      git3.connect(user1).delRef(repoName, "0x616263")
    ).to.be.revertedWith("only owner");
  });

  it("RepoName Check", async function () {
    const Git3 = await ethers.getContractFactory("Git3Hub");
    const git3 = await Git3.deploy();
    await git3.deployed();

    let repoName = Buffer.from(
      "abcdefghijklmnopqrstuvwxyz0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ.-_"
    );
    await git3.createRepo(repoName);
    await expect(git3.createRepo(repoName)).to.be.revertedWith(
      "RepoName already exist"
    );
    await expect(git3.createRepo(Buffer.from("a/b"))).to.be.revertedWith(
      "RepoName must be alphanumeric or -._"
    );
    await expect(
      git3.createRepo(Buffer.from("a".repeat(101)))
    ).to.be.revertedWith("RepoName length must be 1-100");
  });

  it("Get the stake number of chunks", async function () {
    const Git3 = await ethers.getContractFactory("Git3Hub");
    const git3 = await Git3.deploy();
    await git3.deployed();

    const repoName = Buffer.from("test");
    await git3.createRepo(repoName);

    let stakeNum1 = ETH;
    let stakeNum2 = ToBig(2).mul(ETH);

    let data0 = Array.from({ length: 1024 }, () =>
      Math.floor(Math.random() * 256)
    );

    await git3.uploadChunk(repoName, "0x616263", 0, data0, {
      value: stakeNum1,
    });
    expect(await git3.download(repoName, "0x616263")).to.eql([
      ethers.utils.hexlify(data0),
      true,
    ]);

    let data1 = Array.from({ length: 1024 }, () =>
      Math.floor(Math.random() * 256)
    );
    await git3.uploadChunk(repoName, "0x616263", 1, data1, {
      value: stakeNum2,
    });
    expect(await git3.download(repoName, "0x616263")).to.eql([
      ethers.utils.hexlify(data0.concat(data1)),
      true,
    ]);

    let stakeNum = await git3.stakeTokens(repoName, "0x616263");
    expect(stakeNum).to.equal(stakeNum1.add(stakeNum2));

    let actualStakeNum1 = await git3.chunkStakeTokens(repoName, "0x616263", 0);
    let actualStakeNum2 = await git3.chunkStakeTokens(repoName, "0x616263", 1);
    expect(actualStakeNum1).to.equal(stakeNum1);
    expect(actualStakeNum2).to.equal(stakeNum2);

    // check that the stake numer of chunk after removing chunks
    await git3.remove(repoName, "0x616263"); // should succeed

    stakeNum = await git3.stakeTokens(repoName, "0x616263");
    actualStakeNum1 = await git3.chunkStakeTokens(repoName, "0x616263", 0);
    actualStakeNum2 = await git3.chunkStakeTokens(repoName, "0x616263", 1);
    expect(stakeNum).to.equal(ToBig(0));
    expect(actualStakeNum1).to.equal(ToBig(0));
    expect(actualStakeNum2).to.equal(ToBig(0));
  });

  it("Refund to user directly after removing chunk", async function () {
    const Git3 = await ethers.getContractFactory("Git3Hub");
    const git3 = await Git3.deploy();
    await git3.deployed();

    let signer;
    [signer] = await ethers.getSigners();

    const repoName = Buffer.from("test");
    await git3.createRepo(repoName);

    stakeNum1 = ETH;
    stakeNum2 = ToBig(2).mul(ETH);

    let data0 = Array.from({ length: 2 }, () =>
      Math.floor(Math.random() * 256)
    );

    await git3.connect(signer).uploadChunk(repoName, "0x616263", 0, data0, {
      value: stakeNum1,
    });

    // check that the stake numer of chunk after removing chunks
    let balBefore = await signer.getBalance();
    let tx1 = await git3.removeChunk(repoName, "0x616263", 0); // should succeed
    let rec1 = await tx1.wait();
    let removeTxCost = rec1.gasUsed.mul(rec1.effectiveGasPrice);
    let balAfter = await signer.getBalance();
    // check balance after refunding
    expect(balBefore.add(stakeNum1).sub(removeTxCost)).to.eq(balAfter);
  });
});