import { expect } from "chai"
import hre, { ethers } from "hardhat"
import { StandardMerkleTree } from "@openzeppelin/merkle-tree"
import { time } from "@nomicfoundation/hardhat-toolbox/network-helpers"

describe("Launchpad", () => {
	async function deployLaunchpadFixture() {
		const signers = await hre.ethers.getSigners()
		const owner = signers[0].address
		const Launchpad = await hre.ethers.getContractFactory("Launchpad")
		const Erc20Token = await hre.ethers.getContractFactory("BasicERC20")
		const launchpadContract = await Launchpad.deploy({
			from: owner,
		})
		const saleTokenContract = await Erc20Token.deploy("TestToken", "TT", owner, {
			from: owner,
		})
		const buyTokenContract = await Erc20Token.deploy("Usdt", "USDT", owner, {
			from: owner,
		})

		const launchpadAddress = await launchpadContract.getAddress()

		await saleTokenContract.mint(signers[0].address, ethers.parseEther("1000000"))
		await saleTokenContract.approve(launchpadAddress, ethers.MaxUint256)
		await buyTokenContract.mint(signers[1].address, ethers.parseEther("10000"))

		return {
			launchpadContract,
			saleTokenContract,
			buyTokenContract,
			owner,
		}
	}

	async function createNativeSaleFixture() {
		const { launchpadContract, saleTokenContract, owner } = await deployLaunchpadFixture()

		const balanceBefore = await saleTokenContract.balanceOf(owner)
		const saleTokenAddress = await saleTokenContract.getAddress()
		const startTime = Math.floor(Date.now() / 1000) + 60 // 1 minute from now
		const endTime = Math.floor(Date.now() / 1000) + 60 * 60 // 1 hour from now
		const paymentTokens = ethers.ZeroAddress
		const paymentTokenPrice = ethers.parseEther("1")

		await launchpadContract.createSale(
			saleTokenAddress,
			balanceBefore,
			startTime,
			endTime,
			paymentTokens,
			paymentTokenPrice
		)

		return {
			launchpadContract,
			saleTokenContract,
			owner,
		}
	}

	describe("init function and setters", () => {
		it("Should Allow Owner to create a sale use native token", async () => {
			const { launchpadContract, saleTokenContract, owner } = await deployLaunchpadFixture()

			const balanceBefore = await saleTokenContract.balanceOf(owner)
			const saleTokenAddress = await saleTokenContract.getAddress()
			const startTime = Math.floor(Date.now() / 1000) + 60 // 1 minute from now
			const endTime = Math.floor(Date.now() / 1000) + 60 * 60 // 1 hour from now
			const paymentTokens = ethers.ZeroAddress
			const paymentTokenPrice = ethers.parseEther("1") / 2500n
			await launchpadContract.createSale(
				saleTokenAddress,
				balanceBefore,
				startTime,
				endTime,
				paymentTokens,
				paymentTokenPrice
			)
			expect(await saleTokenContract.balanceOf(owner)).to.equal(0)
			expect(await launchpadContract.getSaleToken()).to.equal(saleTokenAddress)
			expect(await launchpadContract.getTotalTokens()).to.equal(balanceBefore)
			expect(await launchpadContract.getStartTime()).to.equal(startTime)
			expect(await launchpadContract.getEndTime()).to.equal(endTime)
			expect(await launchpadContract.getPaymentTokens()).to.equal(ethers.ZeroAddress)
			expect(await launchpadContract.getPaymentTokenPrice()).to.equal(paymentTokenPrice)
			expect(await launchpadContract.getTokensSold()).to.equal(0n)
		})

		it("should Allow Owner reset payment info", async () => {
			const { launchpadContract, saleTokenContract, owner } = await createNativeSaleFixture()
			const paymentTokenBefore = await launchpadContract.getPaymentTokens()
			const paymentTokenPriceBefore = await launchpadContract.getPaymentTokenPrice()
			expect(await launchpadContract.getPaymentTokens()).to.equal(paymentTokenBefore)
			expect(await launchpadContract.getPaymentTokenPrice()).to.equal(paymentTokenPriceBefore)
			const newPaymentToken = await saleTokenContract.getAddress()
			const newPaymentTokenPrice = ethers.parseEther("1")
			await launchpadContract.setSalePayment(newPaymentToken, newPaymentTokenPrice, {
				from: owner,
			})
			expect(await launchpadContract.getPaymentTokens()).to.equal(newPaymentToken)
			expect(await launchpadContract.getPaymentTokenPrice()).to.equal(newPaymentTokenPrice)
		})

		it("should Allow Owner set MerkleRoot", async () => {
			const { launchpadContract, owner } = await createNativeSaleFixture()
			const signers = await hre.ethers.getSigners()

			const values = [
				[signers[0].address, ethers.parseEther("50")],
				[signers[1].address, ethers.parseEther("150")],
				[signers[2].address, ethers.parseEther("100")],
			]
			const tree = StandardMerkleTree.of(values, ["address", "uint256"])
			const root = tree.root
			await launchpadContract.setMerkleRoot(root, { from: owner })
			expect(await launchpadContract.merkleRoot()).to.equal(tree.root)
		})

		it("should Allow Owner transfer Owner", async () => {
			const { launchpadContract, owner } = await createNativeSaleFixture()
			const signers = await hre.ethers.getSigners()
			const newOwner = signers[1].address
			await launchpadContract.setOwner(newOwner, { from: owner })
			expect(await launchpadContract.owner()).to.equal(newOwner)
		})
	})

	describe("after init buy function", () => {
		it("should Allow user use native token buy token", async () => {
			const { launchpadContract, owner } = await createNativeSaleFixture()

			const signers = await hre.ethers.getSigners()
			const values = [
				[signers[0].address, ethers.parseEther("50")],
				[signers[1].address, ethers.parseEther("10")],
				[signers[2].address, ethers.parseEther("100")],
				[signers[3].address, ethers.parseEther("200")],
				[signers[4].address, ethers.parseEther("300")],
			]
			const tree = StandardMerkleTree.of(values, ["address", "uint256"])
			const root = tree.root
			const buyAmount = ethers.parseEther("1")
			const buyer = signers[1]
			let maxBuyAmount = 0n
			let proof = [] as string[]
			let wrongProof = [] as string[]
			for (const [i, v] of tree.entries()) {
				if (v[0] === buyer.address) {
					proof = tree.getProof(i)
					if (typeof v[1] === "bigint") {
						maxBuyAmount = v[1]
					}
				}
				if (v[0] === signers[2].address) {
					wrongProof = tree.getProof(i)
				}
			}
			await expect(
				launchpadContract.connect(buyer).contributeETH(buyAmount, maxBuyAmount, proof)
			).to.be.revertedWith("MerkleRoot not initialized")
			await launchpadContract.setMerkleRoot(root, { from: owner })

			await expect(
				launchpadContract.connect(buyer).contributeETH(buyAmount, maxBuyAmount, proof)
			).to.be.revertedWith("Sale is not active")
			await time.increase(100)
			await expect(
				launchpadContract.connect(buyer).contributeETH(buyAmount + maxBuyAmount, maxBuyAmount, proof, {
					value: ethers.parseEther("0.5"),
				})
			).to.be.revertedWith("Buy amount exceeds max buy amount")
			await expect(
				launchpadContract.connect(buyer).contributeETH(buyAmount, maxBuyAmount, wrongProof, {
					value: ethers.parseEther("0.5"),
				})
			).to.be.revertedWith("Invalid proof")
			await expect(
				launchpadContract.connect(buyer).contributeETH(buyAmount, maxBuyAmount, proof, {
					value: ethers.parseEther("0.5"),
				})
			).to.be.revertedWith("Not enough ETH sent")
			await expect(
				launchpadContract.connect(buyer).contributeETH(ethers.parseEther("50"), maxBuyAmount, proof, {
					value: ethers.parseEther("50"),
				})
			).to.revertedWith("Buy amount exceeds max buy amount")
			//success once
			await expect(
				launchpadContract.connect(buyer).contributeETH(buyAmount, maxBuyAmount, proof, {
					value: ethers.parseEther("1"),
				})
			).to.emit(launchpadContract, "Contributed")
			//make it success twice
			await expect(
				launchpadContract.connect(buyer).contributeETH(ethers.parseEther("4"), maxBuyAmount, proof, {
					value: ethers.parseEther("4"),
				})
			).to.emit(launchpadContract, "Contributed")
			expect(await launchpadContract.getClaimableTokens(buyer.address)).to.equal(
				buyAmount + ethers.parseEther("4")
			)
			//failed by exceeding max buy amount
			await expect(
				launchpadContract.connect(buyer).contributeETH(ethers.parseEther("10"), maxBuyAmount, proof, {
					value: ethers.parseEther("10"),
				})
			).to.be.revertedWith("Buy amount exceeds max buy amount")
		})
		it("should Allow user claim token after finished sale", async () => {
			const { launchpadContract, saleTokenContract, owner } = await createNativeSaleFixture()

			const signers = await hre.ethers.getSigners()
			const values = [
				[signers[0].address, ethers.parseEther("50")],
				[signers[1].address, ethers.parseEther("10")],
				[signers[2].address, ethers.parseEther("100")],
				[signers[3].address, ethers.parseEther("200")],
				[signers[4].address, ethers.parseEther("300")],
			]
			const tree = StandardMerkleTree.of(values, ["address", "uint256"])
			const root = tree.root
			const buyAmount = ethers.parseEther("1")
			const buyer = signers[1]
			let maxBuyAmount = 0n
			let proof = [] as string[]
			for (const [i, v] of tree.entries()) {
				if (v[0] === buyer.address) {
					proof = tree.getProof(i)
					if (typeof v[1] === "bigint") {
						maxBuyAmount = v[1]
					}
				}
			}
			await launchpadContract.setMerkleRoot(root, { from: owner })
			await time.increase(100)
			await expect(
				launchpadContract.connect(buyer).contributeETH(buyAmount, maxBuyAmount, proof, {
					value: ethers.parseEther("1"),
				})
			).to.emit(launchpadContract, "Contributed")
			expect(await launchpadContract.getClaimableTokens(buyer.address)).to.equal(buyAmount)
			await expect(launchpadContract.connect(buyer).claimTokens()).to.be.revertedWith(
				"Claiming tokens is not enabled"
			)
			expect(await launchpadContract.enableClaimTokens(Math.floor(Date.now() / 1000) + 60 * 60)).to.emit(
				launchpadContract,
				"EnableClaimToken"
			)
			await expect(launchpadContract.connect(buyer).claimTokens()).to.be.revertedWith(
				"Claiming tokens not started yet"
			)
			await time.increase(60 * 60 + 100) // increase time to finish sale
			await expect(launchpadContract.connect(signers[2]).claimTokens()).to.be.revertedWith("No tokens to claim")
			//Transfer token
			await expect(launchpadContract.connect(buyer).claimTokens()).to.emit(saleTokenContract, "Transfer")
			//Balance check
			expect(await saleTokenContract.balanceOf(buyer.address)).to.equal(buyAmount)
		})
		it("should Allow owner claim contribution token after finished sale", async () => {
			const { launchpadContract, saleTokenContract, owner } = await createNativeSaleFixture()

			const signers = await hre.ethers.getSigners()
			const values = [
				[signers[0].address, ethers.parseEther("50")],
				[signers[1].address, ethers.parseEther("10")],
				[signers[2].address, ethers.parseEther("100")],
				[signers[3].address, ethers.parseEther("200")],
				[signers[4].address, ethers.parseEther("300")],
			]
			const tree = StandardMerkleTree.of(values, ["address", "uint256"])
			const root = tree.root
			const buyAmount = ethers.parseEther("1")
			const buyer = signers[1]
			let maxBuyAmount = 0n
			let proof = [] as string[]
			for (const [i, v] of tree.entries()) {
				if (v[0] === buyer.address) {
					proof = tree.getProof(i)
					if (typeof v[1] === "bigint") {
						maxBuyAmount = v[1]
					}
				}
			}
			await launchpadContract.setMerkleRoot(root, { from: owner })
			await time.increase(100)

			const launchpadAddress = await launchpadContract.getAddress()
			await expect(
				launchpadContract.connect(buyer).contributeETH(buyAmount, maxBuyAmount, proof, {
					value: ethers.parseEther("1"),
				})
			).to.emit(launchpadContract, "Contributed")

			await expect(launchpadContract.withdrawPayments()).to.be.revertedWith("Sale is still active")

			await launchpadContract.enableClaimTokens(Math.floor(Date.now() / 1000) + 60 * 60)

			await time.increase(60 * 60 + 100) // increase time to finish sale
			await launchpadContract.connect(buyer).claimTokens()
			//todo 写不动了 接下来测试 非 owner withdraw token/钱 owner 的 withdraw token/钱
			await expect(launchpadContract.connect(signers[2]).withdrawPayments()).to.revertedWith(
				"Only owner can call this function"
			)
			await expect(launchpadContract.withdrawPayments()).to.emit(launchpadContract, "WithdrawPayments")
			expect(await ethers.provider.getBalance(launchpadAddress)).to.equal(0n)
			await expect(launchpadContract.connect(signers[2]).withdrawRemainingTokens()).to.revertedWith(
				"Only owner can call this function"
			)
			await expect(launchpadContract.withdrawRemainingTokens()).to.emit(
				launchpadContract,
				"WithdrawRemainingTokens"
			)
			expect(await saleTokenContract.balanceOf(launchpadAddress)).to.equal(0)
		})
	})
})