package com.fsck.k9.activity.setup;

import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.preference.ListPreference;
import android.preference.Preference;
import android.util.Log;
import android.view.KeyEvent;
import com.fsck.k9.*;
import com.fsck.k9.mail.Folder.FolderClass;
import com.fsck.k9.mail.MessagingException;
import com.fsck.k9.mail.Store;
import com.fsck.k9.mail.store.LocalStore.LocalFolder;
import com.fsck.k9.service.MailService;

public class FolderSettings extends K9PreferenceActivity
{

    private static final String EXTRA_FOLDER_NAME = "com.fsck.k9.folderName";
    private static final String EXTRA_ACCOUNT = "com.fsck.k9.account";

    private static final String PREFERENCE_TOP_CATERGORY = "folder_settings";
    private static final String PREFERENCE_DISPLAY_CLASS = "folder_settings_folder_display_mode";
    private static final String PREFERENCE_SYNC_CLASS = "folder_settings_folder_sync_mode";
    private static final String PREFERENCE_PUSH_CLASS = "folder_settings_folder_push_mode";

    private LocalFolder mFolder;

    private ListPreference mDisplayClass;
    private ListPreference mSyncClass;
    private ListPreference mPushClass;

    public static void actionSettings(Context context, Account account, String folderName)
    {
        Intent i = new Intent(context, FolderSettings.class);
        i.putExtra(EXTRA_FOLDER_NAME, folderName);
        i.putExtra(EXTRA_ACCOUNT, account);
        context.startActivity(i);
    }

    @Override
    public void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);

        String folderName = (String)getIntent().getSerializableExtra(EXTRA_FOLDER_NAME);
        Account mAccount = (Account)getIntent().getSerializableExtra(EXTRA_ACCOUNT);

        try
        {
            Store localStore = Store.getInstance(mAccount.getLocalStoreUri(),
                                                 getApplication());
            mFolder = (LocalFolder) localStore.getFolder(folderName);
            mFolder.refresh(Preferences.getPreferences(this));
        }
        catch (MessagingException me)
        {
            Log.e(K9.LOG_TAG, "Unable to edit folder " + folderName + " preferences", me);
            return;
        }

        boolean isPushCapable = false;
        Store store = null;
        try
        {
            store = Store.getInstance(mAccount.getStoreUri(), getApplication());
            isPushCapable = store.isPushCapable();
        }
        catch (Exception e)
        {
            Log.e(K9.LOG_TAG, "Could not get remote store", e);
        }

        addPreferencesFromResource(R.xml.folder_settings_preferences);

        Preference category = findPreference(PREFERENCE_TOP_CATERGORY);
        category.setTitle(folderName);

        mDisplayClass = (ListPreference) findPreference(PREFERENCE_DISPLAY_CLASS);
        mDisplayClass.setValue(mFolder.getDisplayClass().name());
        mDisplayClass.setSummary(mDisplayClass.getEntry());
        mDisplayClass.setOnPreferenceChangeListener(new Preference.OnPreferenceChangeListener()
        {
            public boolean onPreferenceChange(Preference preference, Object newValue)
            {
                final String summary = newValue.toString();
                int index = mDisplayClass.findIndexOfValue(summary);
                mDisplayClass.setSummary(mDisplayClass.getEntries()[index]);
                mDisplayClass.setValue(summary);
                return false;
            }
        });

        mSyncClass = (ListPreference) findPreference(PREFERENCE_SYNC_CLASS);
        mSyncClass.setValue(mFolder.getRawSyncClass().name());
        mSyncClass.setSummary(mSyncClass.getEntry());
        mSyncClass.setOnPreferenceChangeListener(new Preference.OnPreferenceChangeListener()
        {
            public boolean onPreferenceChange(Preference preference, Object newValue)
            {
                final String summary = newValue.toString();
                int index = mSyncClass.findIndexOfValue(summary);
                mSyncClass.setSummary(mSyncClass.getEntries()[index]);
                mSyncClass.setValue(summary);
                return false;
            }
        });

        mPushClass = (ListPreference) findPreference(PREFERENCE_PUSH_CLASS);
        mPushClass.setEnabled(isPushCapable);
        mPushClass.setValue(mFolder.getRawPushClass().name());
        mPushClass.setSummary(mPushClass.getEntry());
        mPushClass.setOnPreferenceChangeListener(new Preference.OnPreferenceChangeListener()
        {
            public boolean onPreferenceChange(Preference preference, Object newValue)
            {
                final String summary = newValue.toString();
                int index = mPushClass.findIndexOfValue(summary);
                mPushClass.setSummary(mPushClass.getEntries()[index]);
                mPushClass.setValue(summary);
                return false;
            }
        });
    }

    @Override
    public void onResume()
    {
        super.onResume();
        try
        {
            mFolder.refresh(Preferences.getPreferences(this));
        }
        catch (MessagingException me)
        {
            Log.e(K9.LOG_TAG, "Could not refresh folder preferences for folder " + mFolder.getName(), me);
        }
    }

    private void saveSettings()
    {
        // We call getPushClass() because display class changes can affect push class when push class is set to inherit
        FolderClass oldPushClass = mFolder.getPushClass();
        FolderClass oldDisplayClass = mFolder.getDisplayClass();
        mFolder.setDisplayClass(FolderClass.valueOf(mDisplayClass.getValue()));
        mFolder.setSyncClass(FolderClass.valueOf(mSyncClass.getValue()));
        mFolder.setPushClass(FolderClass.valueOf(mPushClass.getValue()));
        
        FolderClass newPushClass = mFolder.getPushClass();
        FolderClass newDisplayClass = mFolder.getDisplayClass();
        
        try
        {
            mFolder.save(Preferences.getPreferences(this));
            if (oldPushClass != newPushClass 
                    || (newPushClass != FolderClass.NO_CLASS && oldDisplayClass != newDisplayClass))
            {
                MailService.actionRestartPushers(getApplication(), null);
            }
        }
        catch (MessagingException me)
        {
            Log.e(K9.LOG_TAG, "Could not refresh folder preferences for folder " + mFolder.getName(), me);
        }
    }

    @Override
    public boolean onKeyDown(int keyCode, KeyEvent event)
    {
        if (keyCode == KeyEvent.KEYCODE_BACK)
        {
            saveSettings();
        }
        return super.onKeyDown(keyCode, event);
    }


}