package org.fox.ttrss;

import java.util.HashMap;

import org.fox.ttrss.types.Article;
import org.fox.ttrss.types.ArticleList;
import org.fox.ttrss.types.Feed;

import com.google.gson.JsonElement;
import com.google.gson.JsonObject;

import android.app.AlertDialog;
import android.app.Dialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.DialogInterface.OnClickListener;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.support.v4.app.FragmentTransaction;
import android.util.Log;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.Window;
import android.widget.EditText;
import android.widget.SearchView;

public class OnlineActivity extends CommonActivity {
	private final String TAG = this.getClass().getSimpleName();
	
	protected String m_sessionId;
	protected SharedPreferences m_prefs;
	protected int m_apiLevel = 0;
	protected Menu m_menu;

	protected boolean m_unreadOnly = true;
	protected boolean m_unreadArticlesOnly = true;
	
	@Override
	public void onCreate(Bundle savedInstanceState) {
		m_prefs = PreferenceManager
				.getDefaultSharedPreferences(getApplicationContext());

		if (m_prefs.getString("theme", "THEME_DARK").equals("THEME_DARK")) {
			setTheme(R.style.DarkTheme);
		} else {
			setTheme(R.style.LightTheme);
		}

		super.onCreate(savedInstanceState);

		requestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS);		

		setProgressBarIndeterminateVisibility(false);

		if (getIntent().getExtras() != null) {
			Intent i = getIntent();
			
			m_sessionId = i.getStringExtra("sessionId");
			m_apiLevel = i.getIntExtra("apiLevel", -1);
		}
		
		if (savedInstanceState != null) {
			m_sessionId = savedInstanceState.getString("sessionId");
			m_apiLevel = savedInstanceState.getInt("apiLevel");
			
			m_unreadOnly = savedInstanceState.getBoolean("unreadOnly");
			m_unreadArticlesOnly = savedInstanceState.getBoolean("unreadArticlesOnly");
		}
		
		Log.d(TAG, "m_sessionId=" + m_sessionId);
		Log.d(TAG, "m_apiLevel=" + m_apiLevel);
		
		setContentView(R.layout.online);
	}

	protected void login() {
		if (m_prefs.getString("ttrss_url", "").trim().length() == 0) {

			setLoadingStatus(R.string.login_need_configure, false);

			AlertDialog.Builder builder = new AlertDialog.Builder(this);
			builder.setMessage(R.string.dialog_need_configure_prompt)
			       .setCancelable(false)
			       .setPositiveButton(R.string.dialog_open_preferences, new DialogInterface.OnClickListener() {
			           public void onClick(DialogInterface dialog, int id) {
			   			// launch preferences
			   			
			        	   Intent intent = new Intent(OnlineActivity.this,
			        			   PreferencesActivity.class);
			        	   startActivityForResult(intent, 0);
			           }
			       })
			       .setNegativeButton(R.string.cancel, new DialogInterface.OnClickListener() {
			           public void onClick(DialogInterface dialog, int id) {
			                dialog.cancel();
			           }
			       });
			AlertDialog alert = builder.create();
			alert.show();
			
		} else {

			LoginRequest ar = new LoginRequest(getApplicationContext());

			HashMap<String, String> map = new HashMap<String, String>() {
				{
					put("op", "login");
					put("user", m_prefs.getString("login", "").trim());
					put("password", m_prefs.getString("password", "").trim());
				}
			};

			ar.execute(map);

			setLoadingStatus(R.string.login_in_progress, true);
		}
	}
	
	protected void loginSuccess() {
		setLoadingStatus(R.string.blank, false);
		findViewById(R.id.loading_container).setVisibility(View.GONE);
		
		initMenu();
	
		Intent intent = new Intent(OnlineActivity.this, FeedsActivity.class);
		intent.putExtra("sessionId", m_sessionId);
		intent.putExtra("apiLevel", m_apiLevel);
		intent.setFlags(Intent.FLAG_ACTIVITY_NO_ANIMATION);
 	   
		startActivityForResult(intent, 0);
		
		finish();
	}
	
	@Override
	public boolean onOptionsItemSelected(MenuItem item) {
		final HeadlinesFragment hf = (HeadlinesFragment) getSupportFragmentManager().findFragmentByTag(FRAG_HEADLINES);
		
		switch (item.getItemId()) {
		case R.id.logout:
			logout();
			return true;
		case R.id.login:
			login();
			return true;
		case R.id.go_offline:
			// FIXME go offline
			return true;
		case R.id.preferences:
			Intent intent = new Intent(OnlineActivity.this,
					PreferencesActivity.class);
			startActivityForResult(intent, 0);
			return true;
		case R.id.search:			
			if (hf != null && isCompatMode()) {
				Dialog dialog = new Dialog(this);

				final EditText edit = new EditText(this);

				AlertDialog.Builder builder = new AlertDialog.Builder(this)
						.setTitle(R.string.search)
						.setPositiveButton(getString(R.string.search),
								new OnClickListener() {

									@Override
									public void onClick(DialogInterface dialog,
											int which) {
										
										String query = edit.getText().toString().trim();
										
										hf.setSearchQuery(query);

									}
								})
						.setNegativeButton(getString(R.string.cancel),
								new OnClickListener() {

									@Override
									public void onClick(DialogInterface dialog,
											int which) {
										
										//

									}
								}).setView(edit);
				
				dialog = builder.create();
				dialog.show();
			}
			return true;
		case R.id.headlines_mark_as_read:
			if (hf != null) {
				ArticleList articles = hf.getUnreadArticles();

				for (Article a : articles)
					a.unread = false;

				ApiRequest req = new ApiRequest(getApplicationContext()) {
					protected void onPostExecute(JsonElement result) {
						hf.refresh(false);
					}
				};

				final String articleIds = articlesToIdString(articles);

				@SuppressWarnings("serial")
				HashMap<String, String> map = new HashMap<String, String>() {
					{
						put("sid", m_sessionId);
						put("op", "updateArticle");
						put("article_ids", articleIds);
						put("mode", "0");
						put("field", "2");
					}
				};
				req.execute(map);
			}
			return true;
		case R.id.headlines_select:
			if (hf != null) {
				Dialog dialog = new Dialog(this);
				AlertDialog.Builder builder = new AlertDialog.Builder(this)
						.setTitle(R.string.headlines_select_dialog)
						.setSingleChoiceItems(
								new String[] {
										getString(R.string.headlines_select_all),
										getString(R.string.headlines_select_unread),
										getString(R.string.headlines_select_none) },
								0, new DialogInterface.OnClickListener() {
									@Override
									public void onClick(DialogInterface dialog,
											int which) {
										switch (which) {
										case 0:
											hf.setSelection(HeadlinesFragment.ArticlesSelection.ALL);
											break;
										case 1:
											hf.setSelection(HeadlinesFragment.ArticlesSelection.UNREAD);
											break;
										case 2:
											hf.setSelection(HeadlinesFragment.ArticlesSelection.NONE);
											break;
										}
										dialog.cancel();
										initMenu();
									}
								});

				dialog = builder.create();
				dialog.show();
			}
			return true;
		default:
			Log.d(TAG, "onOptionsItemSelected, unhandled id=" + item.getItemId());
			return super.onOptionsItemSelected(item);
		}
	}
	
	protected void logout() {
		m_sessionId = null;
		
		findViewById(R.id.loading_container).setVisibility(View.VISIBLE);
		setLoadingStatus(R.string.login_ready, false);

		initMenu();
	}
	
	protected void loginFailure() {
		m_sessionId = null;
		initMenu();
	}

	public boolean getUnreadArticlesOnly() {
		return m_unreadArticlesOnly;
	}
	
	public boolean getUnreadOnly() {
		return m_unreadOnly;
	}
	
	@Override
	public void onSaveInstanceState(Bundle out) {
		super.onSaveInstanceState(out);
		
		out.putString("sessionId", m_sessionId);
		out.putInt("apiLevel", m_apiLevel);
		out.putBoolean("unreadOnly", m_unreadOnly);
		out.putBoolean("unreadArticlesOnly", m_unreadArticlesOnly);
	}
	
	@Override
	public void onResume() {
		super.onResume();
		
		if (m_sessionId == null) {
			login();
		} else {
			loginSuccess();
		}
	}
	
	public Menu getMenu() {
		return m_menu;
	}
	
	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
		MenuInflater inflater = getMenuInflater();
		inflater.inflate(R.menu.main_menu, menu);

		m_menu = menu;

		initMenu();
		
		return true;
	}
	
	protected String getSessionId() {
		return m_sessionId;
	}
	
	protected int getApiLevel() {
		return m_apiLevel;
	}
	
	@SuppressWarnings({ "unchecked", "serial" })
	public void saveArticleUnread(final Article article) {
		ApiRequest req = new ApiRequest(getApplicationContext());

		HashMap<String, String> map = new HashMap<String, String>() {
			{
				put("sid", m_sessionId);
				put("op", "updateArticle");
				put("article_ids", String.valueOf(article.id));
				put("mode", article.unread ? "1" : "0");
				put("field", "2");
			}
		};

		req.execute(map);
	}

	@SuppressWarnings({ "unchecked", "serial" })
	public void saveArticleMarked(final Article article) {
		ApiRequest req = new ApiRequest(getApplicationContext()) {
			protected void onPostExecute(JsonElement result) {
				toast(article.marked ? R.string.notify_article_marked : R.string.notify_article_unmarked);
			}
		};

		HashMap<String, String> map = new HashMap<String, String>() {
			{
				put("sid", m_sessionId);
				put("op", "updateArticle");
				put("article_ids", String.valueOf(article.id));
				put("mode", article.marked ? "1" : "0");
				put("field", "0");
			}
		};
		
		req.execute(map);
	}

	@SuppressWarnings({ "unchecked", "serial" })
	public void saveArticlePublished(final Article article) {

		ApiRequest req = new ApiRequest(getApplicationContext()) {
			protected void onPostExecute(JsonElement result) {
				toast(article.published ? R.string.notify_article_published : R.string.notify_article_unpublished);
			}
		};

		HashMap<String, String> map = new HashMap<String, String>() {
			{
				put("sid", m_sessionId);
				put("op", "updateArticle");
				put("article_ids", String.valueOf(article.id));
				put("mode", article.published ? "1" : "0");
				put("field", "1");
			}
		};

		req.execute(map);
	}

	@SuppressWarnings({ "unchecked", "serial" })
	public void saveArticleNote(final Article article, final String note) {
		ApiRequest req = new ApiRequest(getApplicationContext()) {
			protected void onPostExecute(JsonElement result) {
				toast(R.string.notify_article_note_set);
			}
		};

		HashMap<String, String> map = new HashMap<String, String>() {
			{
				put("sid", m_sessionId);
				put("op", "updateArticle");
				put("article_ids", String.valueOf(article.id));
				put("mode", "1");
				put("data", note);
				put("field", "3");
			}
		};

		req.execute(map);
	}

	public static String articlesToIdString(ArticleList articles) {
		String tmp = "";

		for (Article a : articles)
			tmp += String.valueOf(a.id) + ",";

		return tmp.replaceAll(",$", "");
	}
	
	public void shareArticle(Article article) {
		if (article != null) {

			Intent intent = getShareIntent(article);
			
			startActivity(Intent.createChooser(intent,
					getString(R.string.share_article)));
		}
	}
	
	private Intent getShareIntent(Article article) {
		Intent intent = new Intent(Intent.ACTION_SEND);

		intent.setType("text/plain");
		intent.putExtra(Intent.EXTRA_SUBJECT, article.title);
		intent.putExtra(Intent.EXTRA_TEXT, article.link);

		return intent;
	}
	
	@SuppressWarnings("unchecked")
	public void catchupFeed(final Feed feed) {
		Log.d(TAG, "catchupFeed=" + feed);

		ApiRequest req = new ApiRequest(getApplicationContext()) {
			protected void onPostExecute(JsonElement result) {
				// refresh?
			}
		};

		@SuppressWarnings("serial")
		HashMap<String, String> map = new HashMap<String, String>() {
			{
				put("sid", m_sessionId);
				put("op", "catchupFeed");
				put("feed_id", String.valueOf(feed.id));
				if (feed.is_cat)
					put("is_cat", "1");
			}
		};

		req.execute(map);
	}
	
	@SuppressWarnings("unchecked")
	public void toggleArticlesMarked(final ArticleList articles) {
		ApiRequest req = new ApiRequest(getApplicationContext());

		@SuppressWarnings("serial")
		HashMap<String, String> map = new HashMap<String, String>() {
			{
				put("sid", m_sessionId);
				put("op", "updateArticle");
				put("article_ids", articlesToIdString(articles));
				put("mode", "2");
				put("field", "0");
			}
		};

		req.execute(map);
	}

	@SuppressWarnings("unchecked")
	public void toggleArticlesUnread(final ArticleList articles) {
		ApiRequest req = new ApiRequest(getApplicationContext());

		@SuppressWarnings("serial")
		HashMap<String, String> map = new HashMap<String, String>() {
			{
				put("sid", m_sessionId);
				put("op", "updateArticle");
				put("article_ids", articlesToIdString(articles));
				put("mode", "2");
				put("field", "2");
			}
		};

		req.execute(map);
		//refresh();
	}

	@SuppressWarnings("unchecked")
	public void toggleArticlesPublished(final ArticleList articles) {
		ApiRequest req = new ApiRequest(getApplicationContext());

		@SuppressWarnings("serial")
		HashMap<String, String> map = new HashMap<String, String>() {
			{
				put("sid", m_sessionId);
				put("op", "updateArticle");
				put("article_ids", articlesToIdString(articles));
				put("mode", "2");
				put("field", "1");
			}
		};

		req.execute(map);
	}
	
	
	protected void initMenu() {
		Log.d(TAG, "initMenu:" + m_menu);
		
		if (m_menu != null) {			
			if (m_sessionId != null) {
				m_menu.setGroupVisible(R.id.menu_group_logged_in, true);
				m_menu.setGroupVisible(R.id.menu_group_logged_out, false);
			} else {
				m_menu.setGroupVisible(R.id.menu_group_logged_in, false);
				m_menu.setGroupVisible(R.id.menu_group_logged_out, true);				
			}
			
			m_menu.setGroupVisible(R.id.menu_group_headlines, false);
			m_menu.setGroupVisible(R.id.menu_group_headlines_selection, false);
			m_menu.setGroupVisible(R.id.menu_group_article, false);
			m_menu.setGroupVisible(R.id.menu_group_feeds, false);
			
			m_menu.findItem(R.id.set_labels).setEnabled(m_apiLevel >= 1);
			m_menu.findItem(R.id.article_set_note).setEnabled(m_apiLevel >= 1);
			
			MenuItem search = m_menu.findItem(R.id.search);
			search.setEnabled(m_apiLevel >= 2);
			
			if (!isCompatMode()) {
				SearchView searchView = (SearchView) search.getActionView();
				searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
					private String query = "";
					
					@Override
					public boolean onQueryTextSubmit(String query) {
						HeadlinesFragment frag = (HeadlinesFragment) getSupportFragmentManager()
								.findFragmentByTag(FRAG_HEADLINES);
						
						if (frag != null) {
							frag.setSearchQuery(query);
							this.query = query;
						}
						
						return false;
					}
					
					@Override
					public boolean onQueryTextChange(String newText) {
						if (newText.equals("") && !newText.equals(this.query)) {
							HeadlinesFragment frag = (HeadlinesFragment) getSupportFragmentManager()
									.findFragmentByTag(FRAG_HEADLINES);
							
							if (frag != null) {
								frag.setSearchQuery(newText);
								this.query = newText;
							}
						}
						
						return false;
					}
				});
			}
		}		
	}
	
	private class LoginRequest extends ApiRequest {
		public LoginRequest(Context context) {
			super(context);
		}

		@SuppressWarnings("unchecked")
		protected void onPostExecute(JsonElement result) {
			if (result != null) {
				try {
					JsonObject content = result.getAsJsonObject();
					if (content != null) {
						m_sessionId = content.get("session_id").getAsString();

						Log.d(TAG, "Authenticated!");

						ApiRequest req = new ApiRequest(m_context) {
							protected void onPostExecute(JsonElement result) {
								m_apiLevel = 0;

								if (result != null) {
									try {
										m_apiLevel = result.getAsJsonObject()
													.get("level").getAsInt();
									} catch (Exception e) {
										e.printStackTrace();
									}
								}

								Log.d(TAG, "Received API level: " + m_apiLevel);

								FragmentTransaction ft = getSupportFragmentManager().beginTransaction();

								loginSuccess();
								return;
							}
						};

						@SuppressWarnings("serial")
						HashMap<String, String> map = new HashMap<String, String>() {
							{
								put("sid", m_sessionId);
								put("op", "getApiLevel");
							}
						};

						req.execute(map);

						setLoadingStatus(R.string.loading_message, true);

						return;
					}

				} catch (Exception e) {
					e.printStackTrace();
				}
			}

			m_sessionId = null;
			setLoadingStatus(getErrorMessage(), false);
			
			loginFailure();
		}

	}
}