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

export const INITIALIZE_BUFFER_DISCRIMINATOR = 0;

export function getInitializeBufferDiscriminatorBytes(): ReadonlyUint8Array {
    return getU32Encoder().encode(INITIALIZE_BUFFER_DISCRIMINATOR);
}

export type InitializeBufferInstruction<
    TProgram extends string = typeof LOADER_V3_PROGRAM_ADDRESS,
    TAccountSourceAccount extends string | AccountMeta<string> = string,
    TAccountBufferAuthority extends string | AccountMeta<string> = string,
    TRemainingAccounts extends readonly AccountMeta<string>[] = [],
> = Instruction<TProgram> &
    InstructionWithData<ReadonlyUint8Array> &
    InstructionWithAccounts<
        [
            TAccountSourceAccount extends string ? WritableAccount<TAccountSourceAccount> : TAccountSourceAccount,
            TAccountBufferAuthority extends string ? ReadonlyAccount<TAccountBufferAuthority> : TAccountBufferAuthority,
            ...TRemainingAccounts,
        ]
    >;

export type InitializeBufferInstructionData = { discriminator: number };

export type InitializeBufferInstructionDataArgs = {};

export function getInitializeBufferInstructionDataEncoder(): FixedSizeEncoder<InitializeBufferInstructionDataArgs> {
    return transformEncoder(getStructEncoder([['discriminator', getU32Encoder()]]), value => ({
        ...value,
        discriminator: INITIALIZE_BUFFER_DISCRIMINATOR,
    }));
}

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

export function getInitializeBufferInstructionDataCodec(): FixedSizeCodec<
    InitializeBufferInstructionDataArgs,
    InitializeBufferInstructionData
> {
    return combineCodec(getInitializeBufferInstructionDataEncoder(), getInitializeBufferInstructionDataDecoder());
}

export type InitializeBufferInput<
    TAccountSourceAccount extends string = string,
    TAccountBufferAuthority extends string = string,
> = {
    /** Source account to initialize. */
    sourceAccount: Address<TAccountSourceAccount>;
    /** Buffer authority. */
    bufferAuthority: Address<TAccountBufferAuthority>;
};

export function getInitializeBufferInstruction<
    TAccountSourceAccount extends string,
    TAccountBufferAuthority extends string,
    TProgramAddress extends Address = typeof LOADER_V3_PROGRAM_ADDRESS,
>(
    input: InitializeBufferInput<TAccountSourceAccount, TAccountBufferAuthority>,
    config?: { programAddress?: TProgramAddress },
): InitializeBufferInstruction<TProgramAddress, TAccountSourceAccount, TAccountBufferAuthority> {
    // Program address.
    const programAddress = config?.programAddress ?? LOADER_V3_PROGRAM_ADDRESS;

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

    const getAccountMeta = getAccountMetaFactory(programAddress, 'programId');
    return Object.freeze({
        accounts: [
            getAccountMeta('sourceAccount', accounts.sourceAccount),
            getAccountMeta('bufferAuthority', accounts.bufferAuthority),
        ],
        data: getInitializeBufferInstructionDataEncoder().encode({}),
        programAddress,
    } as InitializeBufferInstruction<TProgramAddress, TAccountSourceAccount, TAccountBufferAuthority>);
}

export type ParsedInitializeBufferInstruction<
    TProgram extends string = typeof LOADER_V3_PROGRAM_ADDRESS,
    TAccountMetas extends readonly AccountMeta[] = readonly AccountMeta[],
> = {
    programAddress: Address<TProgram>;
    accounts: {
        /** Source account to initialize. */
        sourceAccount: TAccountMetas[0];
        /** Buffer authority. */
        bufferAuthority: TAccountMetas[1];
    };
    data: InitializeBufferInstructionData;
};

export function parseInitializeBufferInstruction<TProgram extends string, TAccountMetas extends readonly AccountMeta[]>(
    instruction: Instruction<TProgram> &
        InstructionWithAccounts<TAccountMetas> &
        InstructionWithData<ReadonlyUint8Array>,
): ParsedInitializeBufferInstruction<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: { sourceAccount: getNextAccount(), bufferAuthority: getNextAccount() },
        data: getInitializeBufferInstructionDataDecoder().decode(instruction.data),
    };
}