#import <UIKit/UIKit.h>

#include <unistd.h>
#include <stdlib.h>
#include <ctype.h>
#import <dlfcn.h>

extern void GSSendAppPreferencesChanged(NSString *bundleID, NSString *key);

static void updatePref(NSString *key)
{
    GSSendAppPreferencesChanged(@"com.apple.springboard", key);
}

// Determines if the device is capable of running on this platform. If your toggle is device specific like only for
BOOL isCapable()
{
	return YES;
}

// This runs when iPhone springboard resets. This is on boot or respring.
BOOL isEnabled()
{
	NSDictionary *plistDict = [NSDictionary dictionaryWithContentsOfFile:@"/var/mobile/Library/Preferences/com.apple.springboard.plist"];
	if(plistDict != nil)
	{
		int AutoLockT = [[plistDict objectForKey:@"SBAutoLockTime"] intValue];
		if (AutoLockT != -1)
			return YES;
	}
	return NO;
}

// This function is optional and should only be used if it is likely for the toggle to become out of sync
// with the state while the iPhone is running. It must be very fast or you will slow down the animated
// showing of the sbsettings window. Imagine 12 slow toggles trying to refresh tate on show.
BOOL getStateFast()
{
	return isEnabled();
}

// Pass in state to set. YES for enable, NO to disable.
void setState(BOOL Enable)
{
	FILE*  fp      = NULL;
	int    AutoLockT  = 0;
	int    AutoDimT  = 0;

	// If we're already in the state being requested, don't do anything.
	if(isEnabled() != Enable)
	{
		NSMutableDictionary *plistDict = [NSMutableDictionary dictionaryWithContentsOfFile:@"/var/mobile/Library/Preferences/com.apple.springboard.plist"];
		if(plistDict != nil)
		{
			if (Enable == NO)
			{
				AutoLockT = [[plistDict objectForKey:@"SBAutoLockTime"] intValue];
				AutoDimT = [[plistDict objectForKey:@"SBAutoDimTime"] intValue];

				// Store off current autolock values.
				fp = fopen("/var/mobile/Library/SBSettings/autolock.sav","wb");
				if(fp != NULL)
				{
					fwrite(&AutoLockT, sizeof(AutoLockT), 1, fp);
					fwrite(&AutoDimT, sizeof(AutoDimT), 1, fp);
					fclose(fp);
				}

				[plistDict setValue:[NSNumber numberWithInt:-1] forKey:@"SBAutoLockTime"];
				[plistDict writeToFile:@"/var/mobile/Library/Preferences/com.apple.springboard.plist" atomically: YES];
				[plistDict setValue:[NSNumber numberWithInt:-1] forKey:@"SBAutoDimTime"];
				[plistDict writeToFile:@"/var/mobile/Library/Preferences/com.apple.springboard.plist" atomically: YES];
			}
			else if (Enable == YES)
			{
				// Store off current autolock values.
				fp = fopen("/var/mobile/Library/SBSettings/autolock.sav","rb");
				if(fp != NULL)
				{
					fread(&AutoLockT, sizeof(AutoLockT), 1, fp);
					fread(&AutoDimT, sizeof(AutoDimT), 1, fp);
					fclose(fp);
					remove("/var/mobile/Library/SBSettings/autolock.sav");
				}
				else
				{
					AutoDimT = 45;
					AutoLockT = 60;
				}

				[plistDict setValue:[NSNumber numberWithInt:AutoLockT] forKey:@"SBAutoLockTime"];
				[plistDict writeToFile:@"/var/mobile/Library/Preferences/com.apple.springbord.plist" atomically: YES];
				[plistDict setValue:[NSNumber numberWithInt:AutoDimT] forKey:@"SBAutoDimTime"];
				[plistDict writeToFile:@"/var/mobile/Library/Preferences/com.apple.springboard.plist" atomically: YES];
			}

			updatePref(@"SBAutoLockTime");
			updatePref(@"SBAutoDimTime");
		}
	}
}

// Amount of time spinner should spin in seconds after the toggle is selected.
float getDelayTime()
{
	return 0.6f;
}

// Runs when the dylib is loaded. Only useful for debug. Function can be omitted.
__attribute__((constructor))
static void toggle_initializer()
{
	NSLog(@"Initializing AutoLock Toggle\n");
}