src/main/java/com/packagemanagement/domain/model/PackageVersion.java - master - Chebarik/PackageManagement

src/main/java/com/packagemanagement/domain/model/PackageVersion.java
151 строка4 KB
Николай Мехоношин
added domain layer entities and services
13 янв 2026, 20:38
13 янв 2026, 20:3850e61ad
package com.packagemanagement.domain.model;

import java.time.Instant;
import java.util.Objects;
import java.util.UUID;

public class PackageVersion {

    private final String id;
    private final String versionNumber;
    private final Instant publishedDate;
    private final long size;
    private final String hash;
    private VersionStatus status;

    private PackageVersion(Builder builder) {
        this.id = builder.id;
        this.versionNumber = builder.versionNumber;
        this.publishedDate = builder.publishedDate;
        this.size = builder.size;
        this.hash = builder.hash;
        this.status = builder.status;
    }

    public static PackageVersion create(String versionNumber, long size, String hash) {
        return builder()
                .id(UUID.randomUUID().toString())
                .versionNumber(versionNumber)
                .publishedDate(Instant.now())
                .size(size)
                .hash(hash)
                .status(VersionStatus.DRAFT)
                .build();
    }

    public static Builder builder() {
        return new Builder();
    }

    public String getId() {
        return id;
    }

    public String getVersionNumber() {
        return versionNumber;
    }

    public Instant getPublishedDate() {
        return publishedDate;
    }

    public long getSize() {
        return size;
    }

    public String getHash() {
        return hash;
    }

    public VersionStatus getStatus() {
        return status;
    }

    public boolean isPublished() {
        return status == VersionStatus.PUBLISHED;
    }

    public boolean canBeDeleted() {
        return status.canBeDeleted();
    }

    public void publish() {
        if (this.status == VersionStatus.ARCHIVED) {
            throw new IllegalStateException("Cannot publish an archived version");
        }
        this.status = VersionStatus.PUBLISHED;
    }

    public void archive() {
        this.status = VersionStatus.ARCHIVED;
    }

    @Override
    public boolean equals(Object o) {
        if (this == o) return true;
        if (o == null || getClass() != o.getClass()) return false;
        PackageVersion that = (PackageVersion) o;
        return Objects.equals(id, that.id);
    }

    @Override
    public int hashCode() {
        return Objects.hash(id);
    }

    @Override
    public String toString() {
        return "PackageVersion{" +
                "id='" + id + '\'' +
                ", versionNumber='" + versionNumber + '\'' +
                ", status=" + status +
                '}';
    }

    public static class Builder {
        private String id;
        private String versionNumber;
        private Instant publishedDate;
        private long size;
        private String hash;
        private VersionStatus status = VersionStatus.DRAFT;

        public Builder id(String id) {
            this.id = id;
            return this;
        }

        public Builder versionNumber(String versionNumber) {
            this.versionNumber = versionNumber;
            return this;
        }

        public Builder publishedDate(Instant publishedDate) {
            this.publishedDate = publishedDate;
            return this;
        }

        public Builder size(long size) {
            this.size = size;
            return this;
        }

        public Builder hash(String hash) {
            this.hash = hash;
            return this;
        }

        public Builder status(VersionStatus status) {
            this.status = status;
            return this;
        }

        public PackageVersion build() {
            Objects.requireNonNull(id, "id is required");
            Objects.requireNonNull(versionNumber, "versionNumber is required");
            Objects.requireNonNull(publishedDate, "publishedDate is required");
            Objects.requireNonNull(hash, "hash is required");
            return new PackageVersion(this);
        }
    }
}