GH-48 Introduce simple update checker, using Modrinth api.

[vLuckyyy]

package com.eternalcode.commons.updater.example;

import com.eternalcode.commons.updater.UpdateResult;

public class ExampleChecker {

    private static final String OLD_ETERNALCOMBAT_VERSION = "1.3.3";

    public static void main(String[] args) {
        ExampleUpdateService updateService = new ExampleUpdateService();

        UpdateResult modrinthResult = updateService.checkModrinth("EternalCombat", OLD_ETERNALCOMBAT_VERSION);
        System.out.println("Modrinth update available: " + modrinthResult.isUpdateAvailable());
        if (modrinthResult.isUpdateAvailable()) {
            System.out.println("Latest: " + modrinthResult.latestVersion());
            System.out.println("Download: " + modrinthResult.downloadUrl());
            System.out.println("Release page: " + modrinthResult.releaseUrl());
        }
    }
}

[gemini-code-assist]

Summary of Changes

Hello @vLuckyyy, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

I've implemented a new module focused on providing a flexible update checking mechanism. This initial iteration includes an integration with the Modrinth API, allowing applications to programmatically determine if newer versions of their components are available. The changes also include foundational classes for handling version comparisons and update results, along with a clear example demonstrating how to use this new functionality.

Highlights

• New Update Checker Module: I've introduced a new eternalcode-commons-updater module, designed to provide a generic framework for checking software updates from various sources. This module includes core interfaces and classes like UpdateChecker, UpdateResult, and a Version utility.
• Modrinth API Integration: A concrete implementation, ModrinthUpdateChecker, has been added to interact with the Modrinth API. This allows the system to query Modrinth for the latest versions of projects and retrieve relevant download and release information.
• Example Usage Module: To demonstrate the usage and integration of the new update checker, I've created an eternalcode-commons-updater-example module. This example showcases how to utilize the ModrinthUpdateChecker to check for updates for a specific project.

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[gemini-code-assist]

Code Review

This pull request introduces a new module for checking for updates using the Modrinth API. The implementation contains some critical issues that need to be addressed. The version comparison logic is flawed and will not correctly identify newer versions in many cases. The Modrinth API client is using a fragile manual JSON parsing method that is also not compatible with the actual API response format, which will prevent it from working. Additionally, the error handling could be improved to be more resilient to network failures. I've left specific comments with suggestions on how to fix these issues.

[gemini-code-assist]

Using String.compareTo for version comparison is incorrect. It compares versions lexicographically, not numerically. For example, "1.10" is considered less than "1.2" because '1' comes before '2' in the second part of the string. This will lead to incorrect update detection.

A proper implementation should split the version string by . and compare each component as a number. The suggestion below provides a basic implementation for numeric versions. For full compatibility with schemes like SemVer (e.g., handling pre-release tags like -alpha), a more advanced parser or a dedicated library would be needed.

    public int compareTo(Version version) {
        String[] thisParts = this.value.split("-")[0].split("\\.");
        String[] otherParts = version.value.split("-")[0].split("\\.");

        int length = Math.max(thisParts.length, otherParts.length);
        for (int i = 0; i < length; i++) {
            int thisPart = i < thisParts.length && !thisParts[i].isEmpty() ? Integer.parseInt(thisParts[i]) : 0;
            int otherPart = i < otherParts.length && !otherParts[i].isEmpty() ? Integer.parseInt(otherParts[i]) : 0;

            if (thisPart != otherPart) {
                return Integer.compare(thisPart, otherPart);
            }
        }

        return 0;
    }

[CitralFlo]

Follow Gemini - had the same issue in irl work XDD update 4.101 was older that 4.99 apparently