/**
 * 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 Address,
  type FixedSizeCodec,
  type FixedSizeDecoder,
  type FixedSizeEncoder,
  type Instruction,
  type InstructionWithAccounts,
  type InstructionWithData,
  type ReadonlyAccount,
  type ReadonlyUint8Array,
  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 CLEANUP_REMOVED_VALIDATOR_ENTRIES_DISCRIMINATOR = 8;

export function getCleanupRemovedValidatorEntriesDiscriminatorBytes(): ReadonlyUint8Array {
  return getU8Encoder().encode(CLEANUP_REMOVED_VALIDATOR_ENTRIES_DISCRIMINATOR);
}

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

export type CleanupRemovedValidatorEntriesInstructionData = {
  discriminator: number;
};

export type CleanupRemovedValidatorEntriesInstructionDataArgs = {};

export function getCleanupRemovedValidatorEntriesInstructionDataEncoder(): FixedSizeEncoder<CleanupRemovedValidatorEntriesInstructionDataArgs> {
  return transformEncoder(
    getStructEncoder([["discriminator", getU8Encoder()]]),
    (value) => ({
      ...value,
      discriminator: CLEANUP_REMOVED_VALIDATOR_ENTRIES_DISCRIMINATOR,
    }),
  );
}

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

export function getCleanupRemovedValidatorEntriesInstructionDataCodec(): FixedSizeCodec<
  CleanupRemovedValidatorEntriesInstructionDataArgs,
  CleanupRemovedValidatorEntriesInstructionData
> {
  return combineCodec(
    getCleanupRemovedValidatorEntriesInstructionDataEncoder(),
    getCleanupRemovedValidatorEntriesInstructionDataDecoder(),
  );
}

export type CleanupRemovedValidatorEntriesInput<
  TAccountStakePool extends string = string,
  TAccountValidatorList extends string = string,
> = {
  stakePool: Address<TAccountStakePool>;
  validatorList: Address<TAccountValidatorList>;
};

/**
 * Cleans up validator stake account entries marked as `ReadyForRemoval`
 * 0. `[]` Stake pool
 * 1. `[w]` Validator stake list storage account
 */
export function getCleanupRemovedValidatorEntriesInstruction<
  TAccountStakePool extends string,
  TAccountValidatorList extends string,
  TProgramAddress extends Address = typeof SPL_STAKE_POOL_PROGRAM_ADDRESS,
>(
  input: CleanupRemovedValidatorEntriesInput<
    TAccountStakePool,
    TAccountValidatorList
  >,
  config?: { programAddress?: TProgramAddress },
): CleanupRemovedValidatorEntriesInstruction<
  TProgramAddress,
  TAccountStakePool,
  TAccountValidatorList
> {
  // Program address.
  const programAddress =
    config?.programAddress ?? SPL_STAKE_POOL_PROGRAM_ADDRESS;

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

  const getAccountMeta = getAccountMetaFactory(programAddress, "programId");
  return Object.freeze({
    accounts: [
      getAccountMeta("stakePool", accounts.stakePool),
      getAccountMeta("validatorList", accounts.validatorList),
    ],
    data: getCleanupRemovedValidatorEntriesInstructionDataEncoder().encode({}),
    programAddress,
  } as CleanupRemovedValidatorEntriesInstruction<
    TProgramAddress,
    TAccountStakePool,
    TAccountValidatorList
  >);
}

export type ParsedCleanupRemovedValidatorEntriesInstruction<
  TProgram extends string = typeof SPL_STAKE_POOL_PROGRAM_ADDRESS,
  TAccountMetas extends readonly AccountMeta[] = readonly AccountMeta[],
> = {
  programAddress: Address<TProgram>;
  accounts: {
    stakePool: TAccountMetas[0];
    validatorList: TAccountMetas[1];
  };
  data: CleanupRemovedValidatorEntriesInstructionData;
};

export function parseCleanupRemovedValidatorEntriesInstruction<
  TProgram extends string,
  TAccountMetas extends readonly AccountMeta[],
>(
  instruction: Instruction<TProgram> &
    InstructionWithAccounts<TAccountMetas> &
    InstructionWithData<ReadonlyUint8Array>,
): ParsedCleanupRemovedValidatorEntriesInstruction<TProgram, TAccountMetas> {
  if (instruction.accounts.length < 2) {
    throw new SolanaError(
      SOLANA_ERROR__PROGRAM_CLIENTS__INSUFFICIENT_ACCOUNT_METAS,
      {
        actualAccountMetas: instruction.accounts.length,
        expectedAccountMetas: 2,
      },
    );
  }
  let accountIndex = 0;
  const getNextAccount = () => {
    const accountMeta = (instruction.accounts as TAccountMetas)[accountIndex]!;
    accountIndex += 1;
    return accountMeta;
  };
  return {
    programAddress: instruction.programAddress,
    accounts: { stakePool: getNextAccount(), validatorList: getNextAccount() },
    data: getCleanupRemovedValidatorEntriesInstructionDataDecoder().decode(
      instruction.data,
    ),
  };
}