source: AE/installer2/src/net/oni2/aeinstaller/backend/mods/ModManager.java@ 604

package net.oni2.aeinstaller.backend.mods;

import java.io.File;
import java.io.FileFilter;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.Collection;
import java.util.HashMap;
import java.util.HashSet;
import java.util.TreeSet;
import java.util.Vector;

import com.thoughtworks.xstream.XStream;
import com.thoughtworks.xstream.io.xml.StaxDriver;

import net.oni2.aeinstaller.backend.Paths;
import net.oni2.aeinstaller.backend.depot.DepotManager;
import net.oni2.aeinstaller.backend.depot.model.NodeMod;
import net.oni2.aeinstaller.backend.depot.model.TaxonomyTerm;
import net.oni2.aeinstaller.backend.oni.Installer;

/**
 * @author Christian Illy
 */
public class ModManager {
        private static ModManager instance = new ModManager();

        private HashMap<String, Type> types = new HashMap<String, Type>();
        private HashMap<Integer, Mod> mods = new HashMap<Integer, Mod>();
        private HashMap<Integer, Mod> tools = new HashMap<Integer, Mod>();

        private Vector<Integer> currentlyInstalled = new Vector<Integer>();

        /**
         * @param f
         *            Mod selection file
         * @return Mod selection
         */
        @SuppressWarnings("unchecked")
        public Vector<Integer> loadModSelection(File f) {
                Vector<Integer> res = new Vector<Integer>();
                try {
                        FileInputStream fis = new FileInputStream(f);
                        XStream xs = new XStream(new StaxDriver());
                        Object obj = xs.fromXML(fis);
                        if (obj instanceof Vector<?>)
                                res = (Vector<Integer>) obj;
                        fis.close();
                } catch (FileNotFoundException e) {
                        e.printStackTrace();
                } catch (IOException e) {
                        e.printStackTrace();
                }
                return res;
        }

        /**
         * @param f
         *            Mod selection file
         * @param mods
         *            Selected mods
         */
        public void saveModSelection(File f, TreeSet<Mod> mods) {
                try {
                        Vector<Integer> installed = new Vector<Integer>();
                        for (Mod m : mods) {
                                installed.add(m.getPackageNumber());
                        }
                        FileOutputStream fos = new FileOutputStream(f);
                        XStream xs = new XStream(new StaxDriver());
                        xs.toXML(installed, fos);
                        fos.close();
                } catch (FileNotFoundException e) {
                        e.printStackTrace();
                } catch (IOException e) {
                        e.printStackTrace();
                }
        }

        /**
         * First initialization of ModManager
         */
        public void init() {
                types = new HashMap<String, Type>();
                mods = new HashMap<Integer, Mod>();

                types.put("-Local-", new Type("-Local-", null));

                for (TaxonomyTerm tt : DepotManager.getInstance()
                                .getTaxonomyTermsByVocabulary(
                                                DepotManager.getInstance().getVocabIdType())) {
                        types.put(tt.getName(), new Type(tt.getName(), tt));
                }

                HashMap<Integer, Mod> modFolders = new HashMap<Integer, Mod>();
                if (Paths.getModsPath().exists()) {
                        for (File f : Paths.getModsPath().listFiles(new FileFilter() {
                                @Override
                                public boolean accept(File pathname) {
                                        return pathname.isDirectory();
                                }
                        })) {
                                Mod m = new Mod(f);
                                modFolders.put(m.getPackageNumber(), m);
                        }
                }

                for (NodeMod nm : DepotManager.getInstance().getModPackageNodes()) {
                        if (nm.getUploads().size() == 1) {
                                Mod m = new Mod(nm);
                                if (nm.isTool())
                                        tools.put(m.getPackageNumber(), m);
                                else
                                        mods.put(m.getPackageNumber(), m);
                                modFolders.remove(m.getPackageNumber());
                        }
                }

                for (Mod m : modFolders.values()) {
                        mods.put(m.getPackageNumber(), m);
                }

                currentlyInstalled = Installer.getInstalledMods();
                if (currentlyInstalled == null)
                        currentlyInstalled = new Vector<Integer>();
        }

        /**
         * @return Singleton instance
         */
        public static ModManager getInstance() {
                return instance;
        }

        Type getTypeByName(String name) {
                return types.get(name);
        }

        /**
         * @return Collection of types which do have mods associated
         */
        public Collection<Type> getTypesWithContent() {
                Vector<Type> res = new Vector<Type>();
                for (Type t : types.values()) {
                        if (t.getEntries().size() > 0)
                                res.add(t);
                }
                return res;
        }

        /**
         * @return Collection of mods
         */
        public Collection<Mod> getMods() {
                return mods.values();
        }

        /**
         * @return Mods which are always installed
         */
        public TreeSet<Mod> getMandatoryMods() {
                TreeSet<Mod> res = new TreeSet<Mod>();
                for (Mod m : mods.values()) {
                        if (m.isMandatoryMod())
                                res.add(m);
                }
                return res;
        }

        /**
         * @return Collection of tools
         */
        public Collection<Mod> getTools() {
                return tools.values();
        }

        /**
         * @return Tools which are always installed
         */
        public TreeSet<Mod> getMandatoryTools() {
                TreeSet<Mod> res = new TreeSet<Mod>();
                for (Mod m : tools.values()) {
                        if (m.isMandatoryMod())
                                res.add(m);
                }
                return res;
        }

        /**
         * Get a mod by its package number
         * 
         * @param number
         *            Package number
         * @return Mod or null
         */
        public Mod getModByNumber(int number) {
                for (Mod m : mods.values()) {
                        if (m.getPackageNumber() == number)
                                return m;
                }
                return null;
        }

        /**
         * Check for unresolved dependencies within the given mods
         * 
         * @param mods
         *            Mods to check
         * @return Unmet dependencies
         */
        public HashMap<Mod, HashSet<Mod>> checkDependencies(TreeSet<Mod> mods) {
                // TODO: Verify functionality
                HashMap<Mod, HashSet<Mod>> res = new HashMap<Mod, HashSet<Mod>>();

                for (Mod m : mods) {
                        for (int depNum : m.getDependencies()) {
                                Mod other = getModByNumber(depNum);
                                if (!mods.contains(other)) {
                                        if (!res.containsKey(m))
                                                res.put(m, new HashSet<Mod>());
                                        res.get(m).add(other);
                                }
                        }
                }

                return res;
        }

        /**
         * Check for conflicts between given mods
         * 
         * @param mods
         *            Mods to check
         * @return Conflicting mods
         */
        public HashMap<Mod, HashSet<Mod>> checkConflicts(TreeSet<Mod> mods) {
                // TODO: Verify functionality
                HashMap<Mod, HashSet<Mod>> res = new HashMap<Mod, HashSet<Mod>>();

                for (Mod m : mods) {
                        for (int confNum : m.getConflicts()) {
                                Mod other = getModByNumber(confNum);
                                if (mods.contains(other)) {
                                        if (!res.containsKey(m))
                                                res.put(m, new HashSet<Mod>());
                                        res.get(m).add(other);
                                }
                        }
                }

                return res;
        }

        /**
         * @param m
         *            Mod to check
         * @return Is mod installed?
         */
        public boolean isModInstalled(Mod m) {
                return currentlyInstalled.contains(m.getPackageNumber());
        }
}