/* UIStateBar.m
 *
 * Copyright (C) 2012  Belledonne Comunications, Grenoble, France
 *
 *  This program 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 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program 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 Library General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 */

#import "UIStateBar.h"
#import "LinphoneManager.h"
#import "PhoneMainView.h"

@implementation UIStateBar {

	NSTimer *callQualityTimer;
	NSTimer *callSecurityTimer;
	int messagesUnreadCount;
}

@synthesize registrationStateImage;
@synthesize registrationStateLabel;
@synthesize callQualityImage;
@synthesize callSecurityImage;
@synthesize callSecurityButton;

#pragma mark - Lifecycle Functions

- (id)init {
	self = [super initWithNibName:@"UIStateBar" bundle:[NSBundle mainBundle]];
	if (self != nil) {
		self->callSecurityImage = nil;
		self->callQualityImage = nil;
		self->securitySheet = nil;
	}
	return self;
}

- (void)dealloc {
	[[NSNotificationCenter defaultCenter] removeObserver:self];
	[callQualityTimer invalidate];
}

#pragma mark - ViewController Functions

- (void)viewWillAppear:(BOOL)animated {
	[super viewWillAppear:animated];

	// Set callQualityTimer
	callQualityTimer = [NSTimer scheduledTimerWithTimeInterval:1
														target:self
													  selector:@selector(callQualityUpdate)
													  userInfo:nil
													   repeats:YES];

	// Set callQualityTimer
	callSecurityTimer = [NSTimer scheduledTimerWithTimeInterval:1
														 target:self
													   selector:@selector(callSecurityUpdate)
													   userInfo:nil
														repeats:YES];

	// Set observer
	[[NSNotificationCenter defaultCenter] addObserver:self
											 selector:@selector(registrationUpdate:)
												 name:kLinphoneRegistrationUpdate
											   object:nil];

	[[NSNotificationCenter defaultCenter] addObserver:self
											 selector:@selector(globalStateUpdate:)
												 name:kLinphoneGlobalStateUpdate
											   object:nil];

	[[NSNotificationCenter defaultCenter] addObserver:self
											 selector:@selector(notifyReceived:)
												 name:kLinphoneNotifyReceived
											   object:nil];

	[[NSNotificationCenter defaultCenter] addObserver:self
											 selector:@selector(callUpdate:)
												 name:kLinphoneCallUpdate
											   object:nil];

	[callQualityImage setHidden:true];
	[callSecurityImage setHidden:true];

	// Update to default state
	LinphoneProxyConfig *config = NULL;
	linphone_core_get_default_proxy([LinphoneManager getLc], &config);
	messagesUnreadCount =
		lp_config_get_int(linphone_core_get_config([LinphoneManager getLc]), "app", "voice_mail_messages_count", 0);

	[self proxyConfigUpdate:config];
	[self updateVoicemail];
}

- (void)viewWillDisappear:(BOOL)animated {
	[super viewWillDisappear:animated];

	// Remove observer
	[[NSNotificationCenter defaultCenter] removeObserver:self name:kLinphoneRegistrationUpdate object:nil];
	[[NSNotificationCenter defaultCenter] removeObserver:self name:kLinphoneGlobalStateUpdate object:nil];
	[[NSNotificationCenter defaultCenter] removeObserver:self name:kLinphoneNotifyReceived object:nil];
	[[NSNotificationCenter defaultCenter] removeObserver:self name:kLinphoneCallUpdate object:nil];

	if (callQualityTimer != nil) {
		[callQualityTimer invalidate];
		callQualityTimer = nil;
	}
	if (callSecurityTimer != nil) {
		[callSecurityTimer invalidate];
		callSecurityTimer = nil;
	}
}

#pragma mark - Event Functions

- (void)registrationUpdate:(NSNotification *)notif {
	LinphoneProxyConfig *config = NULL;
	linphone_core_get_default_proxy([LinphoneManager getLc], &config);
	[self proxyConfigUpdate:config];
}

- (void)globalStateUpdate:(NSNotification *)notif {
	[self registrationUpdate:notif];
}

- (void)notifyReceived:(NSNotification *)notif {
	const LinphoneContent *content = [[notif.userInfo objectForKey:@"content"] pointerValue];

	if ((content == NULL) || (strcmp("application", linphone_content_get_type(content)) != 0) ||
		(strcmp("simple-message-summary", linphone_content_get_subtype(content)) != 0) ||
		(linphone_content_get_buffer(content) == NULL)) {
		return;
	}
	const char *body = linphone_content_get_buffer(content);
	if ((body = strstr(body, "voice-message: ")) == NULL) {
		LOGW(@"Received new NOTIFY from voice mail but could not find 'voice-message' in BODY. Ignoring it.");
		return;
	}

	sscanf(body, "voice-message: %d", &messagesUnreadCount);

	LOGI(@"Received new NOTIFY from voice mail: there is/are now %d message(s) unread", messagesUnreadCount);

	// save in lpconfig for future
	lp_config_set_int(linphone_core_get_config([LinphoneManager getLc]), "app", "voice_mail_messages_count",
					  messagesUnreadCount);

	[self updateVoicemail];
}

- (void)updateVoicemail {
	if (messagesUnreadCount > 0) {
		self.voicemailCount.hidden = (linphone_core_get_calls([LinphoneManager getLc]) != NULL);
		self.voicemailCount.text = [[NSString
			stringWithFormat:NSLocalizedString(@"%d unread messages", @"%d"), messagesUnreadCount] uppercaseString];
	} else {
		self.voicemailCount.hidden = TRUE;
	}
}

- (void)callUpdate:(NSNotification *)notif {
	// show voice mail only when there is no call
	[self updateVoicemail];
}

#pragma mark -

- (void)proxyConfigUpdate:(LinphoneProxyConfig *)config {
	LinphoneRegistrationState state = LinphoneRegistrationNone;
	NSString *message = nil;
	UIImage *image = nil;
	LinphoneCore *lc = [LinphoneManager getLc];
	LinphoneGlobalState gstate = linphone_core_get_global_state(lc);

	if (gstate == LinphoneGlobalConfiguring) {
		message = NSLocalizedString(@"Fetching remote configuration", nil);
	} else if (config == NULL) {
		state = LinphoneRegistrationNone;
		if (linphone_core_is_network_reachable([LinphoneManager getLc]))
			message = NSLocalizedString(@"No SIP account configured", nil);
		else
			message = NSLocalizedString(@"Network down", nil);
	} else {
		state = linphone_proxy_config_get_state(config);

		switch (state) {
		case LinphoneRegistrationOk:
			message = NSLocalizedString(@"Registered", nil);
			break;
		case LinphoneRegistrationNone:
		case LinphoneRegistrationCleared:
			message = NSLocalizedString(@"Not registered", nil);
			break;
		case LinphoneRegistrationFailed:
			message = NSLocalizedString(@"Registration failed", nil);
			break;
		case LinphoneRegistrationProgress:
			message = NSLocalizedString(@"Registration in progress", nil);
			break;
		default:
			break;
		}
	}

	registrationStateLabel.hidden = NO;
	switch (state) {
	case LinphoneRegistrationFailed:
		registrationStateImage.hidden = NO;
		image = [UIImage imageNamed:@"led_error.png"];
		break;
	case LinphoneRegistrationCleared:
	case LinphoneRegistrationNone:
		registrationStateImage.hidden = NO;
		image = [UIImage imageNamed:@"led_disconnected.png"];
		break;
	case LinphoneRegistrationProgress:
		registrationStateImage.hidden = NO;
		image = [UIImage imageNamed:@"led_inprogress.png"];
		break;
	case LinphoneRegistrationOk:
		registrationStateImage.hidden = NO;
		image = [UIImage imageNamed:@"led_connected.png"];
		break;
	}
	[registrationStateLabel setText:message];
	registrationStateLabel.accessibilityValue = registrationStateImage.accessibilityValue = message;
	[registrationStateImage setImage:image];
}

#pragma mark -

- (void)callSecurityUpdate {
	BOOL pending = false;
	BOOL security = true;

	const MSList *list = linphone_core_get_calls([LinphoneManager getLc]);

	if (list == NULL) {
		if (securitySheet) {
			[securitySheet dismissWithClickedButtonIndex:securitySheet.destructiveButtonIndex animated:TRUE];
		}
		[callSecurityImage setHidden:true];
		return;
	}
	while (list != NULL) {
		LinphoneCall *call = (LinphoneCall *)list->data;
		LinphoneMediaEncryption enc = linphone_call_params_get_media_encryption(linphone_call_get_current_params(call));
		if (enc == LinphoneMediaEncryptionNone)
			security = false;
		else if (enc == LinphoneMediaEncryptionZRTP) {
			if (!linphone_call_get_authentication_token_verified(call)) {
				pending = true;
			}
		}
		list = list->next;
	}

	if (security) {
		if (pending) {
			[callSecurityImage setImage:[UIImage imageNamed:@"security_pending.png"]];
		} else {
			[callSecurityImage setImage:[UIImage imageNamed:@"security_ok.png"]];
		}
	} else {
		[callSecurityImage setImage:[UIImage imageNamed:@"security_ko.png"]];
	}
	[callSecurityImage setHidden:false];
}

- (void)callQualityUpdate {
	UIImage *image = nil;
	LinphoneCall *call = linphone_core_get_current_call([LinphoneManager getLc]);
	if (call != NULL) {
		// FIXME double check call state before computing, may cause core dump
		float quality = linphone_call_get_average_quality(call);
		if (quality < 1) {
			image = [UIImage imageNamed:@"call_quality_indicator_0.png"];
		} else if (quality < 2) {
			image = [UIImage imageNamed:@"call_quality_indicator_1.png"];
		} else if (quality < 3) {
			image = [UIImage imageNamed:@"call_quality_indicator_2.png"];
		} else {
			image = [UIImage imageNamed:@"call_quality_indicator_3.png"];
		}
	}
	if (image != nil) {
		[callQualityImage setHidden:false];
		[callQualityImage setImage:image];
	} else {
		[callQualityImage setHidden:true];
	}
}

#pragma mark - Action Functions

- (IBAction)doSecurityClick:(id)sender {
	if (linphone_core_get_calls_nb([LinphoneManager getLc])) {
		LinphoneCall *call = linphone_core_get_current_call([LinphoneManager getLc]);
		if (call != NULL) {
			LinphoneMediaEncryption enc =
				linphone_call_params_get_media_encryption(linphone_call_get_current_params(call));
			if (enc == LinphoneMediaEncryptionZRTP) {
				bool valid = linphone_call_get_authentication_token_verified(call);
				NSString *message = nil;
				if (valid) {
					message = NSLocalizedString(@"Remove trust in the peer?", nil);
				} else {
					message = [NSString
						stringWithFormat:NSLocalizedString(@"Confirm the following SAS with the peer:\n%s", nil),
										 linphone_call_get_authentication_token(call)];
				}
				if (securitySheet == nil) {
					__block __strong UIStateBar *weakSelf = self;
					securitySheet = [[DTActionSheet alloc] initWithTitle:message];
					[securitySheet setDelegate:self];
					[securitySheet addButtonWithTitle:NSLocalizedString(@"Ok", nil)
												block:^() {
												  linphone_call_set_authentication_token_verified(call, !valid);
												  weakSelf->securitySheet = nil;
												}];

					[securitySheet addDestructiveButtonWithTitle:NSLocalizedString(@"Cancel", nil)
														   block:^() {
															 weakSelf->securitySheet = nil;
														   }];
					[securitySheet showInView:[PhoneMainView instance].view];
				}
			}
		}
	}
}

- (void)actionSheet:(UIActionSheet *)actionSheet didDismissWithButtonIndex:(NSInteger)buttonIndex {
	securitySheet = nil;
}

#pragma mark - TPMultiLayoutViewController Functions

- (NSDictionary *)attributesForView:(UIView *)view {
	NSMutableDictionary *attributes = [NSMutableDictionary dictionary];

	[attributes setObject:[NSValue valueWithCGRect:view.frame] forKey:@"frame"];
	[attributes setObject:[NSValue valueWithCGRect:view.bounds] forKey:@"bounds"];
	[attributes setObject:[NSNumber numberWithInteger:view.autoresizingMask] forKey:@"autoresizingMask"];

	return attributes;
}

- (void)applyAttributes:(NSDictionary *)attributes toView:(UIView *)view {
	view.frame = [[attributes objectForKey:@"frame"] CGRectValue];
	view.bounds = [[attributes objectForKey:@"bounds"] CGRectValue];
	view.autoresizingMask = [[attributes objectForKey:@"autoresizingMask"] integerValue];
}

@end