/**
 * 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,
  getStructDecoder,
  getStructEncoder,
  getU8Decoder,
  getU8Encoder,
  SOLANA_ERROR__PROGRAM_CLIENTS__INSUFFICIENT_ACCOUNT_METAS,
  SolanaError,
  transformEncoder,
  type AccountMeta,
  type AccountSignerMeta,
  type Address,
  type FixedSizeCodec,
  type FixedSizeDecoder,
  type FixedSizeEncoder,
  type Instruction,
  type InstructionWithAccounts,
  type InstructionWithData,
  type ReadonlyAccount,
  type ReadonlySignerAccount,
  type ReadonlyUint8Array,
  type TransactionSigner,
  type WritableAccount,
} from "@solana/kit";
import {
  getAccountMetaFactory,
  type ResolvedInstructionAccount,
} from "@solana/program-client-core";
import { SPL_STAKE_POOL_PROGRAM_ADDRESS } from "../programs/index.ts";

export const SET_STAKER_DISCRIMINATOR = 13;

export function getSetStakerDiscriminatorBytes(): ReadonlyUint8Array {
  return getU8Encoder().encode(SET_STAKER_DISCRIMINATOR);
}

export type SetStakerInstruction<
  TProgram extends string = typeof SPL_STAKE_POOL_PROGRAM_ADDRESS,
  TAccountStakePool extends string | AccountMeta<string> = string,
  TAccountAuthority extends string | AccountMeta<string> = string,
  TAccountNewStakerPubkey extends string | AccountMeta<string> = string,
  TRemainingAccounts extends readonly AccountMeta<string>[] = [],
> = Instruction<TProgram> &
  InstructionWithData<ReadonlyUint8Array> &
  InstructionWithAccounts<
    [
      TAccountStakePool extends string
        ? WritableAccount<TAccountStakePool>
        : TAccountStakePool,
      TAccountAuthority extends string
        ? ReadonlySignerAccount<TAccountAuthority> &
            AccountSignerMeta<TAccountAuthority>
        : TAccountAuthority,
      TAccountNewStakerPubkey extends string
        ? ReadonlyAccount<TAccountNewStakerPubkey>
        : TAccountNewStakerPubkey,
      ...TRemainingAccounts,
    ]
  >;

export type SetStakerInstructionData = { discriminator: number };

export type SetStakerInstructionDataArgs = {};

export function getSetStakerInstructionDataEncoder(): FixedSizeEncoder<SetStakerInstructionDataArgs> {
  return transformEncoder(
    getStructEncoder([["discriminator", getU8Encoder()]]),
    (value) => ({ ...value, discriminator: SET_STAKER_DISCRIMINATOR }),
  );
}

export function getSetStakerInstructionDataDecoder(): FixedSizeDecoder<SetStakerInstructionData> {
  return getStructDecoder([["discriminator", getU8Decoder()]]);
}

export function getSetStakerInstructionDataCodec(): FixedSizeCodec<
  SetStakerInstructionDataArgs,
  SetStakerInstructionData
> {
  return combineCodec(
    getSetStakerInstructionDataEncoder(),
    getSetStakerInstructionDataDecoder(),
  );
}

export type SetStakerInput<
  TAccountStakePool extends string = string,
  TAccountAuthority extends string = string,
  TAccountNewStakerPubkey extends string = string,
> = {
  /** Stake pool */
  stakePool: Address<TAccountStakePool>;
  /** Manager or current staker */
  authority: TransactionSigner<TAccountAuthority>;
  /** New staker pubkey */
  newStakerPubkey: Address<TAccountNewStakerPubkey>;
};

/**
 * (Manager or staker only) Update staker
 * 0. `[w]` Stake pool
 * 1. `[s]` Manager or current staker
 * 2. '[]` New staker pubkey
 */
export function getSetStakerInstruction<
  TAccountStakePool extends string,
  TAccountAuthority extends string,
  TAccountNewStakerPubkey extends string,
  TProgramAddress extends Address = typeof SPL_STAKE_POOL_PROGRAM_ADDRESS,
>(
  input: SetStakerInput<
    TAccountStakePool,
    TAccountAuthority,
    TAccountNewStakerPubkey
  >,
  config?: { programAddress?: TProgramAddress },
): SetStakerInstruction<
  TProgramAddress,
  TAccountStakePool,
  TAccountAuthority,
  TAccountNewStakerPubkey
> {
  // Program address.
  const programAddress =
    config?.programAddress ?? SPL_STAKE_POOL_PROGRAM_ADDRESS;

  // Original accounts.
  const originalAccounts = {
    stakePool: { value: input.stakePool ?? null, isWritable: true },
    authority: { value: input.authority ?? null, isWritable: false },
    newStakerPubkey: {
      value: input.newStakerPubkey ?? null,
      isWritable: false,
    },
  };
  const accounts = originalAccounts as Record<
    keyof typeof originalAccounts,
    ResolvedInstructionAccount
  >;

  const getAccountMeta = getAccountMetaFactory(programAddress, "programId");
  return Object.freeze({
    accounts: [
      getAccountMeta("stakePool", accounts.stakePool),
      getAccountMeta("authority", accounts.authority),
      getAccountMeta("newStakerPubkey", accounts.newStakerPubkey),
    ],
    data: getSetStakerInstructionDataEncoder().encode({}),
    programAddress,
  } as SetStakerInstruction<
    TProgramAddress,
    TAccountStakePool,
    TAccountAuthority,
    TAccountNewStakerPubkey
  >);
}

export type ParsedSetStakerInstruction<
  TProgram extends string = typeof SPL_STAKE_POOL_PROGRAM_ADDRESS,
  TAccountMetas extends readonly AccountMeta[] = readonly AccountMeta[],
> = {
  programAddress: Address<TProgram>;
  accounts: {
    /** Stake pool */
    stakePool: TAccountMetas[0];
    /** Manager or current staker */
    authority: TAccountMetas[1];
    /** New staker pubkey */
    newStakerPubkey: TAccountMetas[2];
  };
  data: SetStakerInstructionData;
};

export function parseSetStakerInstruction<
  TProgram extends string,
  TAccountMetas extends readonly AccountMeta[],
>(
  instruction: Instruction<TProgram> &
    InstructionWithAccounts<TAccountMetas> &
    InstructionWithData<ReadonlyUint8Array>,
): ParsedSetStakerInstruction<TProgram, TAccountMetas> {
  if (instruction.accounts.length < 3) {
    throw new SolanaError(
      SOLANA_ERROR__PROGRAM_CLIENTS__INSUFFICIENT_ACCOUNT_METAS,
      {
        actualAccountMetas: instruction.accounts.length,
        expectedAccountMetas: 3,
      },
    );
  }
  let accountIndex = 0;
  const getNextAccount = () => {
    const accountMeta = (instruction.accounts as TAccountMetas)[accountIndex]!;
    accountIndex += 1;
    return accountMeta;
  };
  return {
    programAddress: instruction.programAddress,
    accounts: {
      stakePool: getNextAccount(),
      authority: getNextAccount(),
      newStakerPubkey: getNextAccount(),
    },
    data: getSetStakerInstructionDataDecoder().decode(instruction.data),
  };
}