/**
 * This code was AUTOGENERATED using the Codama library.
 * Please DO NOT EDIT THIS FILE, instead use visitors
 * to add features, then rerun Codama to update it.
 *
 * @see https://github.com/codama-idl/codama
 */

import {
  combineCodec,
  fixDecoderSize,
  fixEncoderSize,
  getBytesDecoder,
  getBytesEncoder,
  getStructDecoder,
  getStructEncoder,
  getU64Decoder,
  getU64Encoder,
  transformEncoder,
  type AccountMeta,
  type Address,
  type FixedSizeCodec,
  type FixedSizeDecoder,
  type FixedSizeEncoder,
  type Instruction,
  type InstructionWithAccounts,
  type InstructionWithData,
  type ReadonlyAccount,
  type ReadonlyUint8Array,
} from "@solana/kit";
import { PERPETUALS_PROGRAM_ADDRESS } from "../programs";
import { getAccountMetaFactory, type ResolvedAccount } from "../shared";

export const GET_EXACT_OUT_SWAP_AMOUNT_AND_FEES_DISCRIMINATOR = new Uint8Array([
  196, 32, 218, 118, 151, 233, 43, 56,
]);

export function getGetExactOutSwapAmountAndFeesDiscriminatorBytes() {
  return fixEncoderSize(getBytesEncoder(), 8).encode(
    GET_EXACT_OUT_SWAP_AMOUNT_AND_FEES_DISCRIMINATOR,
  );
}

export type GetExactOutSwapAmountAndFeesInstruction<
  TProgram extends string = typeof PERPETUALS_PROGRAM_ADDRESS,
  TAccountPerpetuals extends string | AccountMeta<string> = string,
  TAccountPool extends string | AccountMeta<string> = string,
  TAccountReceivingCustody extends string | AccountMeta<string> = string,
  TAccountReceivingCustodyOracleAccount extends string | AccountMeta<string> =
    string,
  TAccountDispensingCustody extends string | AccountMeta<string> = string,
  TAccountDispensingCustodyOracleAccount extends string | AccountMeta<string> =
    string,
  TRemainingAccounts extends readonly AccountMeta<string>[] = [],
> = Instruction<TProgram> &
  InstructionWithData<ReadonlyUint8Array> &
  InstructionWithAccounts<
    [
      TAccountPerpetuals extends string
        ? ReadonlyAccount<TAccountPerpetuals>
        : TAccountPerpetuals,
      TAccountPool extends string
        ? ReadonlyAccount<TAccountPool>
        : TAccountPool,
      TAccountReceivingCustody extends string
        ? ReadonlyAccount<TAccountReceivingCustody>
        : TAccountReceivingCustody,
      TAccountReceivingCustodyOracleAccount extends string
        ? ReadonlyAccount<TAccountReceivingCustodyOracleAccount>
        : TAccountReceivingCustodyOracleAccount,
      TAccountDispensingCustody extends string
        ? ReadonlyAccount<TAccountDispensingCustody>
        : TAccountDispensingCustody,
      TAccountDispensingCustodyOracleAccount extends string
        ? ReadonlyAccount<TAccountDispensingCustodyOracleAccount>
        : TAccountDispensingCustodyOracleAccount,
      ...TRemainingAccounts,
    ]
  >;

export type GetExactOutSwapAmountAndFeesInstructionData = {
  discriminator: ReadonlyUint8Array;
  amountOut: bigint;
};

export type GetExactOutSwapAmountAndFeesInstructionDataArgs = {
  amountOut: number | bigint;
};

export function getGetExactOutSwapAmountAndFeesInstructionDataEncoder(): FixedSizeEncoder<GetExactOutSwapAmountAndFeesInstructionDataArgs> {
  return transformEncoder(
    getStructEncoder([
      ["discriminator", fixEncoderSize(getBytesEncoder(), 8)],
      ["amountOut", getU64Encoder()],
    ]),
    (value) => ({
      ...value,
      discriminator: GET_EXACT_OUT_SWAP_AMOUNT_AND_FEES_DISCRIMINATOR,
    }),
  );
}

export function getGetExactOutSwapAmountAndFeesInstructionDataDecoder(): FixedSizeDecoder<GetExactOutSwapAmountAndFeesInstructionData> {
  return getStructDecoder([
    ["discriminator", fixDecoderSize(getBytesDecoder(), 8)],
    ["amountOut", getU64Decoder()],
  ]);
}

export function getGetExactOutSwapAmountAndFeesInstructionDataCodec(): FixedSizeCodec<
  GetExactOutSwapAmountAndFeesInstructionDataArgs,
  GetExactOutSwapAmountAndFeesInstructionData
> {
  return combineCodec(
    getGetExactOutSwapAmountAndFeesInstructionDataEncoder(),
    getGetExactOutSwapAmountAndFeesInstructionDataDecoder(),
  );
}

export type GetExactOutSwapAmountAndFeesInput<
  TAccountPerpetuals extends string = string,
  TAccountPool extends string = string,
  TAccountReceivingCustody extends string = string,
  TAccountReceivingCustodyOracleAccount extends string = string,
  TAccountDispensingCustody extends string = string,
  TAccountDispensingCustodyOracleAccount extends string = string,
> = {
  perpetuals: Address<TAccountPerpetuals>;
  pool: Address<TAccountPool>;
  receivingCustody: Address<TAccountReceivingCustody>;
  receivingCustodyOracleAccount: Address<TAccountReceivingCustodyOracleAccount>;
  dispensingCustody: Address<TAccountDispensingCustody>;
  dispensingCustodyOracleAccount: Address<TAccountDispensingCustodyOracleAccount>;
  amountOut: GetExactOutSwapAmountAndFeesInstructionDataArgs["amountOut"];
};

export function getGetExactOutSwapAmountAndFeesInstruction<
  TAccountPerpetuals extends string,
  TAccountPool extends string,
  TAccountReceivingCustody extends string,
  TAccountReceivingCustodyOracleAccount extends string,
  TAccountDispensingCustody extends string,
  TAccountDispensingCustodyOracleAccount extends string,
  TProgramAddress extends Address = typeof PERPETUALS_PROGRAM_ADDRESS,
>(
  input: GetExactOutSwapAmountAndFeesInput<
    TAccountPerpetuals,
    TAccountPool,
    TAccountReceivingCustody,
    TAccountReceivingCustodyOracleAccount,
    TAccountDispensingCustody,
    TAccountDispensingCustodyOracleAccount
  >,
  config?: { programAddress?: TProgramAddress },
): GetExactOutSwapAmountAndFeesInstruction<
  TProgramAddress,
  TAccountPerpetuals,
  TAccountPool,
  TAccountReceivingCustody,
  TAccountReceivingCustodyOracleAccount,
  TAccountDispensingCustody,
  TAccountDispensingCustodyOracleAccount
> {
  // Program address.
  const programAddress = config?.programAddress ?? PERPETUALS_PROGRAM_ADDRESS;

  // Original accounts.
  const originalAccounts = {
    perpetuals: { value: input.perpetuals ?? null, isWritable: false },
    pool: { value: input.pool ?? null, isWritable: false },
    receivingCustody: {
      value: input.receivingCustody ?? null,
      isWritable: false,
    },
    receivingCustodyOracleAccount: {
      value: input.receivingCustodyOracleAccount ?? null,
      isWritable: false,
    },
    dispensingCustody: {
      value: input.dispensingCustody ?? null,
      isWritable: false,
    },
    dispensingCustodyOracleAccount: {
      value: input.dispensingCustodyOracleAccount ?? null,
      isWritable: false,
    },
  };
  const accounts = originalAccounts as Record<
    keyof typeof originalAccounts,
    ResolvedAccount
  >;

  // Original args.
  const args = { ...input };

  const getAccountMeta = getAccountMetaFactory(programAddress, "programId");
  return Object.freeze({
    accounts: [
      getAccountMeta(accounts.perpetuals),
      getAccountMeta(accounts.pool),
      getAccountMeta(accounts.receivingCustody),
      getAccountMeta(accounts.receivingCustodyOracleAccount),
      getAccountMeta(accounts.dispensingCustody),
      getAccountMeta(accounts.dispensingCustodyOracleAccount),
    ],
    data: getGetExactOutSwapAmountAndFeesInstructionDataEncoder().encode(
      args as GetExactOutSwapAmountAndFeesInstructionDataArgs,
    ),
    programAddress,
  } as GetExactOutSwapAmountAndFeesInstruction<
    TProgramAddress,
    TAccountPerpetuals,
    TAccountPool,
    TAccountReceivingCustody,
    TAccountReceivingCustodyOracleAccount,
    TAccountDispensingCustody,
    TAccountDispensingCustodyOracleAccount
  >);
}

export type ParsedGetExactOutSwapAmountAndFeesInstruction<
  TProgram extends string = typeof PERPETUALS_PROGRAM_ADDRESS,
  TAccountMetas extends readonly AccountMeta[] = readonly AccountMeta[],
> = {
  programAddress: Address<TProgram>;
  accounts: {
    perpetuals: TAccountMetas[0];
    pool: TAccountMetas[1];
    receivingCustody: TAccountMetas[2];
    receivingCustodyOracleAccount: TAccountMetas[3];
    dispensingCustody: TAccountMetas[4];
    dispensingCustodyOracleAccount: TAccountMetas[5];
  };
  data: GetExactOutSwapAmountAndFeesInstructionData;
};

export function parseGetExactOutSwapAmountAndFeesInstruction<
  TProgram extends string,
  TAccountMetas extends readonly AccountMeta[],
>(
  instruction: Instruction<TProgram> &
    InstructionWithAccounts<TAccountMetas> &
    InstructionWithData<ReadonlyUint8Array>,
): ParsedGetExactOutSwapAmountAndFeesInstruction<TProgram, TAccountMetas> {
  if (instruction.accounts.length < 6) {
    // TODO: Coded error.
    throw new Error("Not enough accounts");
  }
  let accountIndex = 0;
  const getNextAccount = () => {
    const accountMeta = (instruction.accounts as TAccountMetas)[accountIndex]!;
    accountIndex += 1;
    return accountMeta;
  };
  return {
    programAddress: instruction.programAddress,
    accounts: {
      perpetuals: getNextAccount(),
      pool: getNextAccount(),
      receivingCustody: getNextAccount(),
      receivingCustodyOracleAccount: getNextAccount(),
      dispensingCustody: getNextAccount(),
      dispensingCustodyOracleAccount: getNextAccount(),
    },
    data: getGetExactOutSwapAmountAndFeesInstructionDataDecoder().decode(
      instruction.data,
    ),
  };
}