/*
This file is part of Keepass2Android, Copyright 2013 Philipp Crocoll. This file is based on Keepassdroid, Copyright Brian Pellin.

  Keepass2Android is free software: you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation, either version 3 of the License, or
  (at your option) any later version.

  Keepass2Android is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with Keepass2Android.  If not, see <http://www.gnu.org/licenses/>.
  */
using System;
using System.Linq;
using Android.App;
using Android.Content;
using Android.Content.PM;
using Android.OS;
using Android.Preferences;
using Android.Views;
using Android.Widget;
using keepass2android.view;
using keepass2android;
using KeePassLib;

namespace keepass2android.search
{
	/// <summary>
	/// Activity to show search results
	/// </summary>
    [Activity(Label = "@string/app_name", Theme = "@style/Kp2aTheme_ActionBar", LaunchMode = Android.Content.PM.LaunchMode.SingleTop, Permission="keepass2android."+AppNames.PackagePart+".permission.KP2aInternalSearch", ConfigurationChanges = ConfigChanges.Orientation | ConfigChanges.Keyboard | ConfigChanges.KeyboardHidden, Exported = true)]
#if NoNet
    [MetaData("android.app.searchable", Resource = "@xml/searchable_offline")]
#else
#if DEBUG
	[MetaData("android.app.searchable", Resource = "@xml/searchable_debug")]
#else
    [MetaData("android.app.searchable", Resource = "@xml/searchable")]
#endif
#endif
	[MetaData("android.app.default_searchable", Value = "keepass2android.search.SearchResults")]
	[IntentFilter(new[]{Intent.ActionSearch}, Categories=new[]{Intent.CategoryDefault})]
	public class SearchResults : GroupBaseActivity
	{
	    protected override void OnCreate (Bundle bundle)
		{
			base.OnCreate (bundle);
			
			if ( IsFinishing ) {
				return;
			}

            SetResult(KeePass.ExitNormal);

			ProcessIntent(Intent);
		}

	    public override bool EntriesBelongToCurrentDatabaseOnly
	    {
	        get { return false; }
	    }

	    public override ElementAndDatabaseId FullGroupId
	    {
	        get { return null; }
	    }


	    protected override void OnNewIntent(Intent intent)
		{
			ProcessIntent(intent);
		}

		private void ProcessIntent(Intent intent)
		{
			// Likely the app has been killed exit the activity 
			if (!App.Kp2a.DatabaseIsUnlocked)
			{
				Finish();
			}

			if (intent.Action == Intent.ActionView)
			{
				var entryIntent = new Intent(this, typeof(EntryActivity));
			    ElementAndDatabaseId id;
			    try
			    {
			        id = new ElementAndDatabaseId(intent.Data.LastPathSegment);
                }
			    catch (Exception e)
			    {
			        Kp2aLog.Log("Failed to transform " + intent.Data.LastPathSegment + " to an ElementAndDatabaseId object. ");
			        App.Kp2a.ShowMessage(this, "Bad path passed. Please provide database and element ID.",  MessageSeverity.Error);
                    Finish();
			        return;
			    }
			    entryIntent.PutExtra(EntryActivity.KeyEntry, id.FullId);
			    entryIntent.AddFlags(ActivityFlags.ForwardResult);
			    Finish(); // Close this activity so that the entry activity is navigated to from the main activity, not this one.
			    StartActivity(entryIntent);

            }
			else
			{
				// Action may either by ActionSearch (from search widget) or null (if called from SearchActivity directly)
				Query(getSearch(intent));
			}
		}

        private void Query(SearchParameters searchParams)
        {
			//kind of an easter egg: if the user types this exact string into the search, it immediately allows to disable the donation options
            if (searchParams.SearchString == "allow disable donation")
            {
                ISharedPreferences prefs = PreferenceManager.GetDefaultSharedPreferences(this);
                ISharedPreferencesEditor edit = prefs.Edit();
                edit.PutLong(GetString(Resource.String.UsageCount_key), 1000);
                edit.PutBoolean("DismissedDonateReminder", true);
                edit.Commit();
                App.Kp2a.ShowMessage(this, "Please go to Settings - App - Display to disable donation requests.",  MessageSeverity.Error);
            }
        

            Group = null;
            try {
                foreach (var db in App.Kp2a.OpenDatabases)
                {
                    PwGroup resultsForThisDb = db.Search(searchParams, null);
                    if (Group == null)
                        Group = resultsForThisDb;
                    else
                    {
                        foreach (var entry in resultsForThisDb.Entries)
                        {
                            Group.AddEntry(entry, false);
                        }
                    }
                }
            } catch (Exception e) {
				Kp2aLog.LogUnexpectedError(e);
				App.Kp2a.ShowMessage(this, Util.GetErrorMessage(e),  MessageSeverity.Error);
				Finish();
				return;
			}

			if ( Group == null || (!Group.Entries.Any()) ) {
                SetContentView(Resource.Layout.group_empty);
			} 

			SetGroupTitle();
			
			FragmentManager.FindFragmentById<GroupListFragment>(Resource.Id.list_fragment).ListAdapter = new PwGroupListAdapter(this, Group);
		}

		private SearchParameters getSearch(Intent queryIntent) {
			// get and process search query here
			SearchParameters sp = new SearchParameters();
			sp.SearchString = queryIntent.GetStringExtra(SearchManager.Query);
			sp.SearchInTitles = queryIntent.GetBooleanExtra("SearchInTitles", sp.SearchInTitles);
			sp.SearchInUrls = queryIntent.GetBooleanExtra("SearchInUrls", sp.SearchInUrls);
			sp.SearchInPasswords = queryIntent.GetBooleanExtra("SearchInPasswords", sp.SearchInPasswords);
			sp.SearchInUserNames = queryIntent.GetBooleanExtra("SearchInUserNames", sp.SearchInUserNames);
			sp.SearchInNotes = queryIntent.GetBooleanExtra("SearchInNotes", sp.SearchInNotes);
			sp.SearchInGroupNames = queryIntent.GetBooleanExtra("SearchInGroupNames", sp.SearchInGroupNames);
			sp.SearchInOther = queryIntent.GetBooleanExtra("SearchInOther", sp.SearchInOther);
			sp.SearchInTags = queryIntent.GetBooleanExtra("SearchInTags", sp.SearchInTags);
			sp.RegularExpression = queryIntent.GetBooleanExtra("RegularExpression", sp.RegularExpression);
			sp.ExcludeExpired = queryIntent.GetBooleanExtra("ExcludeExpired", sp.ExcludeExpired);
			sp.ComparisonMode = queryIntent.GetBooleanExtra("CaseSensitive", false) ?
				StringComparison.InvariantCulture :
					StringComparison.InvariantCultureIgnoreCase;

			return sp;
			
		}

		public override void OnCreateContextMenu(IContextMenu menu, View v,
			IContextMenuContextMenuInfo  menuInfo) 
		{

			AdapterView.AdapterContextMenuInfo acmi = (AdapterView.AdapterContextMenuInfo) menuInfo;
			ClickView cv = (ClickView) acmi.TargetView;
			cv.OnCreateMenu(menu, menuInfo);
		}

		public override bool OnContextItemSelected(IMenuItem item) {
			AdapterView.AdapterContextMenuInfo acmi = (AdapterView.AdapterContextMenuInfo)item.MenuInfo;
			ClickView cv = (ClickView) acmi.TargetView;

			bool result;

			return cv.OnContextItemSelected(item);
		}


		public override bool OnSearchRequested()
		{
			Intent i = new Intent(this, typeof(SearchActivity));
			this.AppTask.ToIntent(i);
			i.SetFlags(ActivityFlags.ForwardResult);
			StartActivity(i);
			return true;
		}

	    public override bool IsSearchResult
        {
            get { return true; }
        }
	}
}