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.modrinth.ModrinthModpackManifest;
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.system.source.ModrinthModSource;
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.util.ArrayList;
import java.util.Set;

public class ModrinthExporter extends Exporter<ModrinthModpackManifest> {
    public ModrinthExporter() {
        super("Modrinth", "mrpack", "overrides");
    }

    @Override
    protected ModrinthModpackManifest generateManifests(Path root, Instance instance, String version) throws IOException {
        ModrinthModpackManifest manifest = new ModrinthModpackManifest();
        manifest.formatVersion = 1;
        manifest.game = "minecraft";
        manifest.versionId = version;
        manifest.name = instance.getName();
        manifest.files = new ArrayList<>();
        manifest.dependencies = new ModrinthModpackManifest.Dependencies();
        manifest.dependencies.minecraft = instance.meta().getMinecraftVersion();
        if (instance.isFabric()) {
            manifest.dependencies.fabricLoader = instance.meta().getLoaderVersion();
        }
        JFiles.writeObject(root.resolve("modrinth.index.json"), manifest);
        return manifest;
    }

    @Override
    protected void addMods(Path root, Instance instance, Iterable<Mod> mods, ModrinthModpackManifest manifest, 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) {
                    if (source instanceof ModrinthModSource cms) {
                        manifest.files.add(cms.toManifest());
                        continue modsLoop;
                    }
                }
                // Not available on modrinth
                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());
        }
        JFiles.writeObject(root.resolve("modrinth.index.json"), manifest);
    }
}