Inceptum/launcher/src/main/java/io/gitlab/jfronny/inceptum/launcher/system/export/MultiMCExporter.java

package io.gitlab.jfronny.inceptum.launcher.system.export;

import io.gitlab.jfronny.commons.io.JFiles;
import io.gitlab.jfronny.inceptum.launcher.model.inceptum.InstanceMeta;
import io.gitlab.jfronny.inceptum.launcher.model.inceptum.rt.Instance;
import io.gitlab.jfronny.inceptum.launcher.model.multimc.MMCPackMeta;
import io.gitlab.jfronny.inceptum.launcher.model.inceptum.rt.Mod;
import io.gitlab.jfronny.inceptum.launcher.system.source.ModSource;
import io.gitlab.jfronny.inceptum.launcher.util.ModPath;

import java.io.FileNotFoundException;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.time.Instant;
import java.util.ArrayList;
import java.util.Set;

public class MultiMCExporter extends Exporter<MMCPackMeta> {
    public MultiMCExporter() {
        super("MultiMC", "zip", ".minecraft");
    }

    @Override
    protected MMCPackMeta generateManifests(Path root, Instance instance, String version) throws IOException {
        {
            Files.writeString(root.resolve("instance.cfg"), String.format("""
                        ForgeVersion=
                        InstanceType=OneSix
                        IntendedVersion=
                        JoinServerOnLaunch=false
                        LWJGLVersion=
                        LiteloaderVersion=
                        LogPrePostOutput=true
                        MCLaunchMethod=LauncherPart
                        OverrideCommands=false
                        OverrideConsole=false
                        OverrideGameTime=false
                        OverrideJavaArgs=false
                        OverrideJavaLocation=false
                        OverrideMCLaunchMethod=false
                        OverrideMemory=false
                        OverrideNativeWorkarounds=false
                        OverrideWindow=false
                        iconKey=default
                        lastLaunchTime=%s
                        lastTimePlayed=0
                        name=%s
                        notes=
                        totalTimePlayed=0
                        """, Instant.now().toEpochMilli(), instance.getName()));
        }
        {
            MMCPackMeta manifest = new MMCPackMeta();
            manifest.formatVersion = 1;
            manifest.components = new ArrayList<>();
            MMCPackMeta.Component lwjgl = new MMCPackMeta.Component();
            lwjgl.dependencyOnly = true;
            lwjgl.uid = "org.lwjgl3";
            lwjgl.version = "3.2.2"; //TODO get automatically
            manifest.components.add(lwjgl);
            MMCPackMeta.Component minecraft = new MMCPackMeta.Component();
            minecraft.important = true;
            minecraft.uid = "net.minecraft";
            minecraft.version = instance.meta().getMinecraftVersion();
            manifest.components.add(minecraft);
            if (instance.isFabric()) {
                MMCPackMeta.Component intermediary = new MMCPackMeta.Component();
                intermediary.dependencyOnly = true;
                intermediary.uid = "net.fabricmc.intermediary";
                intermediary.version = instance.meta().getMinecraftVersion();
                manifest.components.add(intermediary);
                MMCPackMeta.Component fabric = new MMCPackMeta.Component();
                fabric.uid = "net.fabricmc.fabric-loader";
                fabric.version = instance.meta().getLoaderVersion();
                manifest.components.add(fabric);
            }
            JFiles.writeObject(root.resolve("mmc-pack.json"), manifest);
            return manifest;
        }
    }

    @Override
    protected void addMods(Path root, Instance instance, Iterable<Mod> mods, MMCPackMeta mmcPackMeta, Path modsOverrides) throws IOException {
        modsLoop: for (Mod mod : mods) {
            if (ModPath.isImod(mod.path())) {
                Set<ModSource> sources = mod.mod().orElseThrow().sources.keySet();
                for (ModSource source : sources) {
                    Files.createDirectories(modsOverrides);
                    Files.copy(source.getJarPath(), modsOverrides.resolve(mod.path().getFileName().toString()));
                    continue modsLoop;
                }
            } else {
                Files.createDirectories(modsOverrides);
                Files.copy(mod.path(), modsOverrides.resolve(mod.path().getFileName().toString()));
                continue modsLoop;
            }
            throw new FileNotFoundException("Could not find mod file for " + mod.path());
        }
    }
}