import { TransactionInstruction, PublicKey, AccountMeta } from "@solana/web3.js" // eslint-disable-line @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 * as types from "../types" // eslint-disable-line @typescript-eslint/no-unused-vars
import { PROGRAM_ID } from "../programId"

export interface OpenPositionArgs {
  tickLowerIndex: number
  tickUpperIndex: number
  tickArrayLowerStartIndex: number
  tickArrayUpperStartIndex: number
  liquidity: BN
  amount0Max: BN
  amount1Max: BN
}

export interface OpenPositionAccounts {
  payer: PublicKey
  positionNftOwner: PublicKey
  positionNftMint: PublicKey
  positionNftAccount: PublicKey
  metadataAccount: PublicKey
  poolState: PublicKey
  protocolPosition: PublicKey
  tickArrayLower: PublicKey
  tickArrayUpper: PublicKey
  personalPosition: PublicKey
  tokenAccount0: PublicKey
  tokenAccount1: PublicKey
  tokenVault0: PublicKey
  tokenVault1: PublicKey
  rent: PublicKey
  systemProgram: PublicKey
  tokenProgram: PublicKey
  associatedTokenProgram: PublicKey
  metadataProgram: PublicKey
}

export const layout = borsh.struct([
  borsh.i32("tickLowerIndex"),
  borsh.i32("tickUpperIndex"),
  borsh.i32("tickArrayLowerStartIndex"),
  borsh.i32("tickArrayUpperStartIndex"),
  borsh.u128("liquidity"),
  borsh.u64("amount0Max"),
  borsh.u64("amount1Max"),
])

export function openPosition(
  args: OpenPositionArgs,
  accounts: OpenPositionAccounts,
  programId: PublicKey = PROGRAM_ID
) {
  const keys: Array<AccountMeta> = [
    { pubkey: accounts.payer, isSigner: true, isWritable: true },
    { pubkey: accounts.positionNftOwner, isSigner: false, isWritable: false },
    { pubkey: accounts.positionNftMint, isSigner: true, isWritable: true },
    { pubkey: accounts.positionNftAccount, isSigner: false, isWritable: true },
    { pubkey: accounts.metadataAccount, isSigner: false, isWritable: true },
    { pubkey: accounts.poolState, isSigner: false, isWritable: true },
    { pubkey: accounts.protocolPosition, isSigner: false, isWritable: true },
    { pubkey: accounts.tickArrayLower, isSigner: false, isWritable: true },
    { pubkey: accounts.tickArrayUpper, isSigner: false, isWritable: true },
    { pubkey: accounts.personalPosition, isSigner: false, isWritable: true },
    { pubkey: accounts.tokenAccount0, isSigner: false, isWritable: true },
    { pubkey: accounts.tokenAccount1, isSigner: false, isWritable: true },
    { pubkey: accounts.tokenVault0, isSigner: false, isWritable: true },
    { pubkey: accounts.tokenVault1, isSigner: false, isWritable: true },
    { pubkey: accounts.rent, isSigner: false, isWritable: false },
    { pubkey: accounts.systemProgram, isSigner: false, isWritable: false },
    { pubkey: accounts.tokenProgram, isSigner: false, isWritable: false },
    {
      pubkey: accounts.associatedTokenProgram,
      isSigner: false,
      isWritable: false,
    },
    { pubkey: accounts.metadataProgram, isSigner: false, isWritable: false },
  ]
  const identifier = Buffer.from([135, 128, 47, 77, 15, 152, 240, 49])
  const buffer = Buffer.alloc(1000)
  const len = layout.encode(
    {
      tickLowerIndex: args.tickLowerIndex,
      tickUpperIndex: args.tickUpperIndex,
      tickArrayLowerStartIndex: args.tickArrayLowerStartIndex,
      tickArrayUpperStartIndex: args.tickArrayUpperStartIndex,
      liquidity: args.liquidity,
      amount0Max: args.amount0Max,
      amount1Max: args.amount1Max,
    },
    buffer
  )
  const data = Buffer.concat([identifier, buffer]).slice(0, 8 + len)
  const ix = new TransactionInstruction({ keys, programId, data })
  return ix
}