/* UIHangUpButton.m
 *
 * Copyright (C) 2011  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 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 "UIHangUpButton.h"
#import "LinphoneManager.h"


@implementation UIHangUpButton


#pragma mark - Static Functions

+ (bool)isInConference:(LinphoneCall*) call {
    if (!call)
        return false;
    return linphone_call_is_in_conference(call);
}

+ (int)callCount:(LinphoneCore*) lc {
    int count = 0;
    const MSList* calls = linphone_core_get_calls(lc);
    
    while (calls != 0) {
        if (![UIHangUpButton isInConference:((LinphoneCall*)calls->data)]) {
            count++;
        }
        calls = calls->next;
    }
    return count;
}


#pragma mark - Lifecycle Functions

- (void)initUIHangUpButton {
    [self addTarget:self action:@selector(touchUp:) forControlEvents:UIControlEventTouchUpInside];
}

- (id)init{
    self = [super init];
    if (self) {
		[self initUIHangUpButton];
    }
    return self;
}

- (id)initWithCoder:(NSCoder *)decoder {
    self = [super initWithCoder:decoder];
    if (self) {
		[self initUIHangUpButton];
	}
    return self;
}	

- (id)initWithFrame:(CGRect)frame {
    self = [super initWithFrame:frame];
    if (self) {
		[self initUIHangUpButton];
    }
    return self;
}

- (void)dealloc {
    [super dealloc];
}


#pragma mark - 

- (void)update {
    if([LinphoneManager isLcReady]) {
        LinphoneCore * lc = [LinphoneManager getLc];
        if(linphone_core_get_calls_nb(lc) == 1 || // One call
           linphone_core_get_current_call(lc) != NULL ||  // In call
           linphone_core_is_in_conference(lc) || // In conference
           (linphone_core_get_conference_size(lc) > 0 && [UIHangUpButton callCount:lc] == 0) // Only one conf
           ) {
            [self setEnabled:true];   
            return;
        }
    }  else {
        [LinphoneLogger logc:LinphoneLoggerWarning format:"Cannot update hangup button: Linphone core not ready"];
    }
    [self setEnabled:false];
}


#pragma mark - Action Functions

-(void) touchUp:(id) sender {
    if([LinphoneManager isLcReady]) {
        LinphoneCore* lc = [LinphoneManager getLc];
        LinphoneCall* currentcall = linphone_core_get_current_call(lc);
        if (linphone_core_is_in_conference(lc) || // In conference
            (linphone_core_get_conference_size(lc) > 0 && [UIHangUpButton callCount:lc] == 0) // Only one conf
            ) {
            linphone_core_terminate_conference(lc);
        } else if(currentcall != NULL) { // In a call
            linphone_core_terminate_call(lc, currentcall);
        } else {
            const MSList* calls = linphone_core_get_calls(lc);
            if (ms_list_size(calls) == 1) { // Only one call
                linphone_core_terminate_call(lc,(LinphoneCall*)(calls->data));
            }
        }
    } else {
        [LinphoneLogger logc:LinphoneLoggerWarning format:"Cannot trigger hangup button: Linphone core not ready"];
    }
}

@end