/**
 * 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,
    getU32Decoder,
    getU32Encoder,
    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/kit/program-client-core';
import { LOADER_V3_PROGRAM_ADDRESS } from '../programs';

export const SET_AUTHORITY_DISCRIMINATOR = 4;

export function getSetAuthorityDiscriminatorBytes(): ReadonlyUint8Array {
    return getU32Encoder().encode(SET_AUTHORITY_DISCRIMINATOR);
}

export type SetAuthorityInstruction<
    TProgram extends string = typeof LOADER_V3_PROGRAM_ADDRESS,
    TAccountBufferOrProgramDataAccount extends string | AccountMeta<string> = string,
    TAccountCurrentAuthority extends string | AccountMeta<string> = string,
    TAccountNewAuthority extends string | AccountMeta<string> = string,
    TRemainingAccounts extends readonly AccountMeta<string>[] = [],
> = Instruction<TProgram> &
    InstructionWithData<ReadonlyUint8Array> &
    InstructionWithAccounts<
        [
            TAccountBufferOrProgramDataAccount extends string
                ? WritableAccount<TAccountBufferOrProgramDataAccount>
                : TAccountBufferOrProgramDataAccount,
            TAccountCurrentAuthority extends string
                ? ReadonlySignerAccount<TAccountCurrentAuthority> & AccountSignerMeta<TAccountCurrentAuthority>
                : TAccountCurrentAuthority,
            TAccountNewAuthority extends string ? ReadonlyAccount<TAccountNewAuthority> : TAccountNewAuthority,
            ...TRemainingAccounts,
        ]
    >;

export type SetAuthorityInstructionData = { discriminator: number };

export type SetAuthorityInstructionDataArgs = {};

export function getSetAuthorityInstructionDataEncoder(): FixedSizeEncoder<SetAuthorityInstructionDataArgs> {
    return transformEncoder(getStructEncoder([['discriminator', getU32Encoder()]]), value => ({
        ...value,
        discriminator: SET_AUTHORITY_DISCRIMINATOR,
    }));
}

export function getSetAuthorityInstructionDataDecoder(): FixedSizeDecoder<SetAuthorityInstructionData> {
    return getStructDecoder([['discriminator', getU32Decoder()]]);
}

export function getSetAuthorityInstructionDataCodec(): FixedSizeCodec<
    SetAuthorityInstructionDataArgs,
    SetAuthorityInstructionData
> {
    return combineCodec(getSetAuthorityInstructionDataEncoder(), getSetAuthorityInstructionDataDecoder());
}

export type SetAuthorityInput<
    TAccountBufferOrProgramDataAccount extends string = string,
    TAccountCurrentAuthority extends string = string,
    TAccountNewAuthority extends string = string,
> = {
    /** Buffer or ProgramData account. */
    bufferOrProgramDataAccount: Address<TAccountBufferOrProgramDataAccount>;
    /** Current authority. */
    currentAuthority: TransactionSigner<TAccountCurrentAuthority>;
    /** New authority (optional). */
    newAuthority?: Address<TAccountNewAuthority>;
};

export function getSetAuthorityInstruction<
    TAccountBufferOrProgramDataAccount extends string,
    TAccountCurrentAuthority extends string,
    TAccountNewAuthority extends string,
    TProgramAddress extends Address = typeof LOADER_V3_PROGRAM_ADDRESS,
>(
    input: SetAuthorityInput<TAccountBufferOrProgramDataAccount, TAccountCurrentAuthority, TAccountNewAuthority>,
    config?: { programAddress?: TProgramAddress },
): SetAuthorityInstruction<
    TProgramAddress,
    TAccountBufferOrProgramDataAccount,
    TAccountCurrentAuthority,
    TAccountNewAuthority
> {
    // Program address.
    const programAddress = config?.programAddress ?? LOADER_V3_PROGRAM_ADDRESS;

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

    const getAccountMeta = getAccountMetaFactory(programAddress, 'programId');
    return Object.freeze({
        accounts: [
            getAccountMeta('bufferOrProgramDataAccount', accounts.bufferOrProgramDataAccount),
            getAccountMeta('currentAuthority', accounts.currentAuthority),
            getAccountMeta('newAuthority', accounts.newAuthority),
        ],
        data: getSetAuthorityInstructionDataEncoder().encode({}),
        programAddress,
    } as SetAuthorityInstruction<
        TProgramAddress,
        TAccountBufferOrProgramDataAccount,
        TAccountCurrentAuthority,
        TAccountNewAuthority
    >);
}

export type ParsedSetAuthorityInstruction<
    TProgram extends string = typeof LOADER_V3_PROGRAM_ADDRESS,
    TAccountMetas extends readonly AccountMeta[] = readonly AccountMeta[],
> = {
    programAddress: Address<TProgram>;
    accounts: {
        /** Buffer or ProgramData account. */
        bufferOrProgramDataAccount: TAccountMetas[0];
        /** Current authority. */
        currentAuthority: TAccountMetas[1];
        /** New authority (optional). */
        newAuthority?: TAccountMetas[2] | undefined;
    };
    data: SetAuthorityInstructionData;
};

export function parseSetAuthorityInstruction<TProgram extends string, TAccountMetas extends readonly AccountMeta[]>(
    instruction: Instruction<TProgram> &
        InstructionWithAccounts<TAccountMetas> &
        InstructionWithData<ReadonlyUint8Array>,
): ParsedSetAuthorityInstruction<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;
    };
    const getNextOptionalAccount = () => {
        const accountMeta = getNextAccount();
        return accountMeta.address === LOADER_V3_PROGRAM_ADDRESS ? undefined : accountMeta;
    };
    return {
        programAddress: instruction.programAddress,
        accounts: {
            bufferOrProgramDataAccount: getNextAccount(),
            currentAuthority: getNextAccount(),
            newAuthority: getNextOptionalAccount(),
        },
        data: getSetAuthorityInstructionDataDecoder().decode(instruction.data),
    };
}