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 SetRewardParamsArgs {
  rewardIndex: number
  emissionsPerSecondX64: BN
  openTime: BN
  endTime: BN
}

export interface SetRewardParamsAccounts {
  authority: PublicKey
  ammConfig: PublicKey
  poolState: PublicKey
  operationState: PublicKey
  tokenProgram: PublicKey
  tokenProgram2022: PublicKey
}

export const layout = borsh.struct([
  borsh.u8("rewardIndex"),
  borsh.u128("emissionsPerSecondX64"),
  borsh.u64("openTime"),
  borsh.u64("endTime"),
])

export function setRewardParams(
  args: SetRewardParamsArgs,
  accounts: SetRewardParamsAccounts,
  programId: PublicKey = PROGRAM_ID
) {
  const keys: Array<AccountMeta> = [
    { pubkey: accounts.authority, isSigner: true, isWritable: false },
    { pubkey: accounts.ammConfig, isSigner: false, isWritable: false },
    { pubkey: accounts.poolState, isSigner: false, isWritable: true },
    { pubkey: accounts.operationState, isSigner: false, isWritable: false },
    { pubkey: accounts.tokenProgram, isSigner: false, isWritable: false },
    { pubkey: accounts.tokenProgram2022, isSigner: false, isWritable: false },
  ]
  const identifier = Buffer.from([112, 52, 167, 75, 32, 201, 211, 137])
  const buffer = Buffer.alloc(1000)
  const len = layout.encode(
    {
      rewardIndex: args.rewardIndex,
      emissionsPerSecondX64: args.emissionsPerSecondX64,
      openTime: args.openTime,
      endTime: args.endTime,
    },
    buffer
  )
  const data = Buffer.concat([identifier, buffer]).slice(0, 8 + len)
  const ix = new TransactionInstruction({ keys, programId, data })
  return ix
}