/* eslint-disable @typescript-eslint/no-unused-vars */
import {
  Address,
  isSome,
  IAccountMeta,
  IAccountSignerMeta,
  IInstruction,
  Option,
  TransactionSigner,
} from "@solana/kit"
/* eslint-enable @typescript-eslint/no-unused-vars */
import BN from "bn.js" // eslint-disable-line @typescript-eslint/no-unused-vars
import * as borsh from "@coral-xyz/borsh" // eslint-disable-line @typescript-eslint/no-unused-vars
import { borshAddress } from "../utils" // eslint-disable-line @typescript-eslint/no-unused-vars
import * as types from "../types" // eslint-disable-line @typescript-eslint/no-unused-vars
import { PROGRAM_ID } from "../programId"

export interface SwapArgs {
  amount: BN
  otherAmountThreshold: BN
  sqrtPriceLimitX64: BN
  isBaseInput: boolean
}

export interface SwapAccounts {
  payer: TransactionSigner
  ammConfig: Address
  poolState: Address
  inputTokenAccount: Address
  outputTokenAccount: Address
  inputVault: Address
  outputVault: Address
  observationState: Address
  tokenProgram: Address
  tickArray: Address
}

export const layout = borsh.struct([
  borsh.u64("amount"),
  borsh.u64("otherAmountThreshold"),
  borsh.u128("sqrtPriceLimitX64"),
  borsh.bool("isBaseInput"),
])

export function swap(
  args: SwapArgs,
  accounts: SwapAccounts,
  programAddress: Address = PROGRAM_ID
) {
  const keys: Array<IAccountMeta | IAccountSignerMeta> = [
    { address: accounts.payer.address, role: 2, signer: accounts.payer },
    { address: accounts.ammConfig, role: 0 },
    { address: accounts.poolState, role: 1 },
    { address: accounts.inputTokenAccount, role: 1 },
    { address: accounts.outputTokenAccount, role: 1 },
    { address: accounts.inputVault, role: 1 },
    { address: accounts.outputVault, role: 1 },
    { address: accounts.observationState, role: 1 },
    { address: accounts.tokenProgram, role: 0 },
    { address: accounts.tickArray, role: 1 },
  ]
  const identifier = Buffer.from([248, 198, 158, 145, 225, 117, 135, 200])
  const buffer = Buffer.alloc(1000)
  const len = layout.encode(
    {
      amount: args.amount,
      otherAmountThreshold: args.otherAmountThreshold,
      sqrtPriceLimitX64: args.sqrtPriceLimitX64,
      isBaseInput: args.isBaseInput,
    },
    buffer
  )
  const data = Buffer.concat([identifier, buffer]).slice(0, 8 + len)
  const ix: IInstruction = { accounts: keys, programAddress, data }
  return ix
}