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package io.apicurio.registry.model;

import jakarta.validation.ValidationException;
import lombok.EqualsAndHashCode;
import lombok.Getter;

import java.util.regex.Pattern;

@Getter
@EqualsAndHashCode
public final class BranchId {

    /**
     * Pattern requirements: - Must not contain reserved characters ":=,<>" (see VersionExpressionParser) -
     * Must accept semver string - Must fit in the database column
     */
    private static final Pattern VALID_PATTERN = Pattern.compile("[a-zA-Z0-9._\\-+]{1,256}");

    public static final BranchId LATEST = new BranchId("latest");
    public static final BranchId DRAFTS = new BranchId("drafts");

    private final String rawBranchId;

    public BranchId(String rawBranchId) {
        if (!isValid(rawBranchId)) {
            throw new ValidationException("Branch ID '" + rawBranchId + "' is invalid. "
                    + "It must consist of alphanumeric characters or '._-+', and have length 1..256 (inclusive).");
        }
        this.rawBranchId = rawBranchId;
    }

    @Override
    public String toString() {
        return rawBranchId;
    }

    public static boolean isValid(String rawBranchId) {
        return rawBranchId != null && VALID_PATTERN.matcher(rawBranchId).matches();
    }
}