/*
 * Copyright (C) 2010 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.replica.replicaisland;

import android.app.ListActivity;
import android.content.Context;
import android.content.Intent;
import android.media.AudioManager;
import android.os.Bundle;
import android.view.KeyEvent;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.view.animation.Animation;
import android.view.animation.AnimationUtils;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.TextView;

import java.lang.reflect.InvocationTargetException;
import java.util.ArrayList;
import java.util.Comparator;
import java.util.List;

public class LevelSelectActivity extends ListActivity {
    private final static int UNLOCK_ALL_LEVELS_ID = 0;
    private final static int UNLOCK_NEXT_LEVEL_ID = 1;
    private final static LevelDataComparator sLevelComparator = new LevelDataComparator();
    private ArrayList<LevelMetaData> mLevelData;
    private Animation mButtonFlickerAnimation;
    private boolean mLevelSelected;
    
    private class LevelMetaData {
        public LevelTree.Level level;
        public int x;
        public int y;
        boolean enabled;
        
        @Override
        public String toString() {
            return level.name;
        }
    }
    
    private class DisableItemArrayAdapter<T> extends ArrayAdapter<T> {
    	private static final int TYPE_ENABLED = 0;
    	private static final int TYPE_DISABLED = 1;
    	private static final int TYPE_COMPLETED = 2;
    	private static final int TYPE_COUNT = 3;
    	
        private int mRowResource;
        private int mDisabledRowResource;
        private int mCompletedRowResource;
        private Context mContext;
        private int mTextViewResource;
        private int mTextViewResource2;
        
        public DisableItemArrayAdapter(Context context, int resource, int disabledResource, int completedResource,
                int textViewResourceId, int textViewResourceId2, List<T> objects) {
            super(context, resource, textViewResourceId, objects);
            mRowResource = resource;
            mDisabledRowResource = disabledResource;
            mCompletedRowResource = completedResource;
            mContext = context;
            mTextViewResource = textViewResourceId;
            mTextViewResource2 = textViewResourceId2;
        }
        
        @Override
        public boolean isEnabled(int position) {
            // TODO: do we have separators in this list?
            return mLevelData.get(position).enabled;
        }
        
        
        @Override
		public boolean areAllItemsEnabled() {
			return false;
		}

		@Override
		public int getItemViewType(int position) {
			int type = TYPE_ENABLED;
			LevelMetaData level = mLevelData.get(position);
			if (level != null) {
				if (!level.enabled) {
					if (level.level.completed) {
						type = TYPE_COMPLETED;
					} else {
						type = TYPE_DISABLED;
					}
				}
			}
			return type;
		}

		@Override
		public int getViewTypeCount() {
			return TYPE_COUNT;
		}

		@Override
		public boolean hasStableIds() {
			return true;
		}

		@Override
		public boolean isEmpty() {
			return mLevelData.size() > 0;
		}

		@Override
        public View getView (int position, View convertView, ViewGroup parent) {
            View sourceView = null;
            if (mLevelData.get(position).enabled) {
            	if (convertView != null && convertView.getId() == mRowResource) {
            		sourceView = convertView;
            	} else {
            		sourceView = LayoutInflater.from(mContext).inflate(
            				mRowResource, parent, false);
            	}
            } else if (mLevelData.get(position).level.completed) {
            	if (convertView != null && convertView.getId() == mCompletedRowResource) {
            		sourceView = convertView;
            	} else {
            		sourceView = LayoutInflater.from(mContext).inflate(
            				mCompletedRowResource, parent, false);
            	}
            } else {
            	if (convertView != null && convertView.getId() == mDisabledRowResource) {
            		sourceView = convertView;
            	} else {
            		sourceView = LayoutInflater.from(mContext).inflate(
                        mDisabledRowResource, parent, false);
            	}
            }
            TextView view = (TextView)sourceView.findViewById(mTextViewResource);
            if (view != null) {
                view.setText(mLevelData.get(position).level.name);
            }
            
            TextView view2 = (TextView)sourceView.findViewById(mTextViewResource2);
            if (view2 != null) {
                view2.setText(mLevelData.get(position).level.timeStamp);
            }
            return sourceView;
        }
        
    }
    
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.level_select);
        mLevelData = new ArrayList<LevelMetaData>();

        if (getIntent().getBooleanExtra("unlockAll", false)) {
        	generateLevelList(false);
        	for (LevelMetaData level : mLevelData) {
                level.enabled = true;
            }
        } else {
        	generateLevelList(true);
        }
        
        
        DisableItemArrayAdapter<LevelMetaData> adapter = new DisableItemArrayAdapter<LevelMetaData>(
                this, R.layout.level_select_row, R.layout.level_select_disabled_row, R.layout.level_select_completed_row,
                R.id.title, R.id.time, mLevelData);
        
        adapter.sort(sLevelComparator);
        
        setListAdapter(adapter);
        
        mButtonFlickerAnimation = AnimationUtils.loadAnimation(this, R.anim.button_flicker);
        
        mLevelSelected = false;
        
        // Keep the volume control type consistent across all activities.
        setVolumeControlStream(AudioManager.STREAM_MUSIC);
    }
    
    protected void generateLevelList(boolean onlyAllowThePast) {
    	final int count = LevelTree.levels.size();
        boolean oneBranchUnlocked = false;
        for (int x = 0; x < count; x++) {
            boolean anyUnlocksThisBranch = false;
            final LevelTree.LevelGroup group = LevelTree.levels.get(x);
            for (int y = 0; y < group.levels.size(); y++) {
                LevelTree.Level level = group.levels.get(y);
                boolean enabled = false;
                if (!level.completed && !oneBranchUnlocked) {
                    enabled = true;
                    anyUnlocksThisBranch = true;
                }
                if (enabled || level.completed || !onlyAllowThePast || (onlyAllowThePast && level.inThePast)) {
                	addItem(level, x, y, enabled);
                }
            }
            if (anyUnlocksThisBranch) {
                oneBranchUnlocked = true;
            }
        }
    }
    
    protected void unlockNext() {
    	final int count = LevelTree.levels.size();
        for (int x = 0; x < count; x++) {
            final LevelTree.LevelGroup group = LevelTree.levels.get(x);
            for (int y = 0; y < group.levels.size(); y++) {
                LevelTree.Level level = group.levels.get(y);
                if (!level.completed) {
                	level.completed = true;
                    return;
                }
            }
           
        }
    }
    

    @Override
    protected void onListItemClick(ListView l, View v, int position, long id) {
        if (!mLevelSelected) {
	        super.onListItemClick(l, v, position, id);
	        LevelMetaData selectedLevel = mLevelData.get(position);
	        if (selectedLevel.enabled) {
	        	mLevelSelected = true;
	            Intent intent = new Intent();
	
	            intent.putExtra("resource", selectedLevel.level.resource);
	            intent.putExtra("row", selectedLevel.x);
	            intent.putExtra("index", selectedLevel.y);
	            TextView text = (TextView)v.findViewById(R.id.title);
	            if (text != null) {
	            	text.startAnimation(mButtonFlickerAnimation);
	            	mButtonFlickerAnimation.setAnimationListener(new EndActivityAfterAnimation(intent));
	            } else {
	                setResult(RESULT_OK, intent);
	            	finish();
	            	if (UIConstants.mOverridePendingTransition != null) {
		 		       try {
		 		    	  UIConstants.mOverridePendingTransition.invoke(LevelSelectActivity.this, R.anim.activity_fade_in, R.anim.activity_fade_out);
		 		       } catch (InvocationTargetException ite) {
		 		           DebugLog.d("Activity Transition", "Invocation Target Exception");
		 		       } catch (IllegalAccessException ie) {
		 		    	   DebugLog.d("Activity Transition", "Illegal Access Exception");
		 		       }
		            }
	            }
	        }
        }
    }
    
    private void addItem(LevelTree.Level level, int x, int y, boolean enabled) {
        LevelMetaData data = new LevelMetaData();
        data.level = level;
        data.x = x;
        data.y = y;
        data.enabled = enabled;
        mLevelData.add(data);
    }
    
    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        super.onCreateOptionsMenu(menu);
        boolean handled = false;
        if (AndouKun.VERSION < 0) {
        	menu.add(0, UNLOCK_NEXT_LEVEL_ID, 0, R.string.unlock_next_level);
        	menu.add(0, UNLOCK_ALL_LEVELS_ID, 0, R.string.unlock_levels);
      
        	handled = true;
        }
        return handled;
    }

    @Override
    public boolean onMenuItemSelected(int featureId, MenuItem item) {
        switch(item.getItemId()) {
        case UNLOCK_NEXT_LEVEL_ID:
        	unlockNext();
        	mLevelData.clear();
        	generateLevelList(false);
            ((ArrayAdapter)getListAdapter()).sort(sLevelComparator);
            ((ArrayAdapter)getListAdapter()).notifyDataSetChanged();

        	return true;
        	
        case UNLOCK_ALL_LEVELS_ID:
        	// Regenerate the level list to remove the past-only filter.
        	mLevelData.clear();
        	generateLevelList(false);
            for (LevelMetaData level : mLevelData) {
                level.enabled = true;
            }
            
            ((ArrayAdapter)getListAdapter()).sort(sLevelComparator);
            ((ArrayAdapter)getListAdapter()).notifyDataSetChanged();
            return true;
        }
        
        return super.onMenuItemSelected(featureId, item);
    }
    
    
    @Override
	public boolean onKeyDown(int keyCode, KeyEvent event) {
    	boolean result = false;
		if (keyCode == KeyEvent.KEYCODE_BACK) {
			result = true;
		}
		return result;
	}

	@Override
	public boolean onKeyUp(int keyCode, KeyEvent event) {
		boolean result = false;
		if (keyCode == KeyEvent.KEYCODE_BACK) {
			result = true;
		}
		return result;
	}


	/** Comparator for level meta data. */
    private final static class LevelDataComparator implements Comparator<LevelMetaData> {
        public int compare(final LevelMetaData object1, final LevelMetaData object2) {
            int result = 0;
            if (object1 == null && object2 != null) {
                result = 1;
            } else if (object1 != null && object2 == null) {
                result = -1;
            } else if (object1 != null && object2 != null) {
                result = object1.level.timeStamp.compareTo(object2.level.timeStamp);
            }
            return result;
        }
    }
    
    protected class EndActivityAfterAnimation implements Animation.AnimationListener {
        private Intent mIntent;
        
        EndActivityAfterAnimation(Intent intent) {
            mIntent = intent;
        }
            

        public void onAnimationEnd(Animation animation) {
            setResult(RESULT_OK, mIntent);
            finish();
        }

        public void onAnimationRepeat(Animation animation) {
            // TODO Auto-generated method stub
            
        }

        public void onAnimationStart(Animation animation) {
            // TODO Auto-generated method stub
            
        }
        
    }
}