com.openelements.hiero.base.protocol.FileAppendRequest Maven / Gradle / Ivy

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package com.openelements.hiero.base.protocol;

import com.hedera.hashgraph.sdk.FileId;
import com.hedera.hashgraph.sdk.Hbar;
import java.time.Duration;
import java.util.Objects;
import org.jspecify.annotations.NonNull;
import org.jspecify.annotations.Nullable;

public record FileAppendRequest(@NonNull Hbar maxTransactionFee,
                                @NonNull Duration transactionValidDuration,
                                @NonNull FileId fileId,
                                @NonNull byte[] contents,
                                @Nullable String fileMemo) implements TransactionRequest {

    private static final String DEFAULT_FILE_MEMO = "";

    private static final int FILE_CREATE_MAX_BYTES = 2048;

    public FileAppendRequest {
        Objects.requireNonNull(maxTransactionFee, "Max transaction fee is required");
        Objects.requireNonNull(transactionValidDuration, "Transaction valid duration is required");
        Objects.requireNonNull(fileId, "FileId is required");
        Objects.requireNonNull(contents, "File contents are required");
        if (maxTransactionFee.toTinybars() < 0) {
            throw new IllegalArgumentException("maxTransactionFee must be non-negative");
        }
        if (transactionValidDuration.isNegative() || transactionValidDuration.isZero()) {
            throw new IllegalArgumentException("transactionValidDuration must be positive");
        }
        if (contents.length > FILE_CREATE_MAX_BYTES) {
            throw new IllegalArgumentException("File contents must be less than " + FILE_CREATE_MAX_BYTES + " bytes");
        }
        if (fileMemo != null && fileMemo.length() > 100) {
            throw new IllegalArgumentException("File memo must be less than 100 characters");
        }
    }

    @NonNull
    public static FileAppendRequest of(@NonNull FileId fileId, @NonNull byte[] contents) {
        return new FileAppendRequest(DEFAULT_MAX_TRANSACTION_FEE, DEFAULT_TRANSACTION_VALID_DURATION, fileId, contents,
                DEFAULT_FILE_MEMO);
    }

    @NonNull
    public static FileAppendRequest of(@NonNull String fileId, @NonNull byte[] contents) {
        Objects.requireNonNull(fileId, "FileId must not be null");
        return of(FileId.fromString(fileId), contents);
    }
}