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LAEventDatabase.m
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LAEventDatabase.m
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/*
* ----------------------------------------------------------------------------
* "THE BEER-WARE LICENSE" (Revision 42):
* Adam Ziolkowski <adam@adsized.com> and Leon Handreke <leon.handreke@gmail.com>
* wrote this file. As long as you retain this notice you
* can do whatever you want with this stuff. If we meet some day, and you think
* this stuff is worth it, you can buy us a beer in return.
* ----------------------------------------------------------------------------
*/
#import "LAEventDatabase.h"
@implementation LAEventDatabase
@synthesize events, eventsUserData;
static LAEventDatabase *mainEventDatabase = nil;
+ (LAEventDatabase *) sharedEventDatabase
{
if(mainEventDatabase == nil) {
//NSLog(@"Loading event DB");
/*// Try to load from the resource bundle first
NSDictionary *eventsDictionary = [NSDictionary dictionaryWithContentsOfFile: [self eventsDatabaseLocation]];*/
//NSDictionary *eventsDictionary = [NSDictionary dictionaryWithContentsOfFile: [self eventDatabaseLocation]];
mainEventDatabase = [[LAEventDatabase alloc] initWithContentsOfFile: [self eventDatabaseLocation]];
[[NSNotificationCenter defaultCenter] postNotificationName: @"LAEventDatabaseUpdated" object: self];
}
return mainEventDatabase;
}
+ (void) releaseMainEventDatabase {
[mainEventDatabase release];
mainEventDatabase = nil;
}
- (LAEventDatabase*) init {
if (self = [super init]) {
events = [[NSMutableArray alloc] init];
//stared = [[NSMutableArray alloc] init];
eventsOnDayCache = [[NSMutableDictionary alloc] init];
[[NSNotificationCenter defaultCenter] addObserver: self
selector: @selector(eventDatabaseUpdated:)
name: @"LAEventDatabaseUpdated"
object: nil];
}
return self;
}
- (LAEventDatabase *) initWithContentsOfFile: (NSString *) filePath {
if (self = [self init]) {
// Before the parsing because the userInfo dict is needed to set the properties
NSMutableDictionary *userDataDictionary = [[NSMutableDictionary alloc] initWithContentsOfFile: [LAEventDatabase userDataFileLocation]];
if (!userDataDictionary) {
userDataDictionary = [[NSMutableDictionary alloc] init];
}
[self setEventsUserData: userDataDictionary];
LAEventsXMLParser *xmlParser = [[LAEventsXMLParser alloc] initWithContentsOfFile: filePath delegate: self];
[xmlParser parse];
// After parsing because we don't want to rewrite what has just been read while parsing
[[NSNotificationCenter defaultCenter] addObserver: self
selector: @selector(eventUpdated:)
name: @"LAEventUpdated"
object: nil];
}
return self;
}
- (void) parser: (LAEventsXMLParser *) parser foundEvent: (LAEvent *) event {
[events addObject: event];
[self updateEventWithUserData: event];
}
- (void) parserFinishedParsing:(LAEventsXMLParser *)parser {
[parser release];
[events sortUsingSelector: @selector(compareDateWithEvent:)];
}
- (void) parserDidFinishSchedule:(LAEventsXMLParser *)parser {
}
- (NSArray *) uniqueDays {
if (cachedUniqueDays != nil) {
return cachedUniqueDays;
}
NSEnumerator *eventsEnumerator = [events objectEnumerator];
LAEvent *currentEvent;
NSMutableArray *uniqueDays = [[NSMutableArray alloc] init];
NSCalendar *calendar = [NSCalendar autoupdatingCurrentCalendar];
while (currentEvent = [eventsEnumerator nextObject]) {
NSDateComponents *currentEventDateComponents = [calendar components: (NSDayCalendarUnit | NSMonthCalendarUnit | NSYearCalendarUnit) fromDate: [currentEvent startDate]];
// We have the date of the event. Now we have to loop through the existing unique dates to see if there already is a date like that.
NSEnumerator *uniqueDaysEnumerator = [uniqueDays objectEnumerator];
NSDate *currentUniqueDay;
BOOL foundMatchingDay = NO;
while (currentUniqueDay = [uniqueDaysEnumerator nextObject]) {
NSDateComponents *uniqueDayDateComponents = [calendar components: (NSDayCalendarUnit | NSMonthCalendarUnit | NSYearCalendarUnit) fromDate: currentUniqueDay];
// Does the current looped unique day match the one we have from the event?
if([uniqueDayDateComponents day] == [currentEventDateComponents day] && \
[uniqueDayDateComponents month] == [currentEventDateComponents month] && \
[uniqueDayDateComponents year] == [currentEventDateComponents year]) {
// Our event does not have a unique date
foundMatchingDay = YES;
break;
}
}
// If the day was already in the uniqueDays, we would have found it by now
if (!foundMatchingDay) {
// The event day is unique! Let's insert it!
// Same shit, different day
[currentEventDateComponents setSecond: 0];
[currentEventDateComponents setMinute: 0];
[currentEventDateComponents setHour: 0];
[uniqueDays addObject: [calendar dateFromComponents: currentEventDateComponents]];
}
}
cachedUniqueDays = uniqueDays;
return uniqueDays;
}
- (NSArray *) eventsOnDay: (NSDate *) dayDate {
// Not really the way to do it but it probably works fine
if ([eventsOnDayCache objectForKey: dayDate] != nil) {
return [eventsOnDayCache objectForKey: dayDate];
}
NSEnumerator *eventsEnumerator = [events objectEnumerator];
LAEvent *currentEvent;
NSMutableArray *eventsOnDay = [NSMutableArray array];
NSCalendar *calendar = [NSCalendar autoupdatingCurrentCalendar];
while (currentEvent = [eventsEnumerator nextObject]) {
NSDateComponents *currentEventDateComponents = [calendar components: (NSDayCalendarUnit | NSMonthCalendarUnit | NSYearCalendarUnit) fromDate: [currentEvent startDate]];
NSDateComponents *eventDateComponents = [calendar components: (NSDayCalendarUnit | NSMonthCalendarUnit | NSYearCalendarUnit) fromDate: dayDate];
if([eventDateComponents day] == [currentEventDateComponents day] && \
[eventDateComponents month] == [currentEventDateComponents month] && \
[eventDateComponents year] == [currentEventDateComponents year]) {
// Obviously the event is on the same day
[eventsOnDay addObject: currentEvent];
}
}
[eventsOnDayCache setObject: eventsOnDay forKey: dayDate];
//NSLog(@"BOOM");
return eventsOnDay;
}
-(NSArray *) tracks {
if (tracksCache != nil) {
return tracksCache;
}
NSEnumerator *eventsEnumerator = [events objectEnumerator];
LAEvent *currentEvent;
NSMutableArray *tracks = [[NSMutableArray alloc] init];
while (currentEvent = [eventsEnumerator nextObject]){
if (![tracks containsObject: [NSString stringWithFormat: @"%@", [currentEvent track]]]) {
[tracks addObject: [NSString stringWithFormat: @"%@", [currentEvent track]]];
}
}
tracksCache = tracks;
return tracks;
}
- (NSMutableArray *) starredEvents {
/*if (starredCache != nil) {
return starredCache;
}*/
NSEnumerator *eventsEnumerator = [events objectEnumerator];
LAEvent *currentEvent;
NSMutableArray *starredEvents = [NSMutableArray array];
while (currentEvent = [eventsEnumerator nextObject]){
if ([currentEvent isStarred]) {
[starredEvents addObject: currentEvent];
}
}
//starredCache = starredEvents;
return starredEvents;
}
-(NSArray *) eventsForTrack: (NSString*) trackName {
NSEnumerator *eventsEnumerator = [events objectEnumerator];
LAEvent *currentEvent;
NSMutableArray *eventsForTrackName = [NSMutableArray array];
while (currentEvent = [eventsEnumerator nextObject]){
if ([[currentEvent track] isEqualToString: trackName]) {
[eventsForTrackName addObject: currentEvent];
}
}
return eventsForTrackName;
}
+ (NSString *) eventDatabaseLocation {
NSString *cacheFileLocation = [self cachedDatabaseLocation];
if ([[NSFileManager defaultManager] fileExistsAtPath: cacheFileLocation]) {
return cacheFileLocation;
}
NSString *resourcesDirectory = [[NSBundle mainBundle] bundlePath];
NSString *resourceFileLocation = [resourcesDirectory stringByAppendingPathComponent:@"fosdem_schedule.xcal"];
return resourceFileLocation;
}
+ (NSString* ) cachedDatabaseLocation {
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *cachesDirectory = [paths objectAtIndex:0];
NSString *cacheFileLocation = [cachesDirectory stringByAppendingPathComponent:@"fosdem_schedule.xcal"];
return cacheFileLocation;
}
+ (NSString *) userDataFileLocation {
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentDirectory = [paths objectAtIndex:0];
NSString *userDataFileLocation = [documentDirectory stringByAppendingPathComponent:@"userData.plist"];
return userDataFileLocation;
}
- (NSMutableDictionary *) userDataForEventWithIdentifier: (NSString *) identifier {
if ([eventsUserData objectForKey: identifier] == nil) {
[eventsUserData setObject: [NSMutableDictionary dictionary] forKey: identifier];
}
return [eventsUserData objectForKey: identifier];
}
- (void) eventUpdated: (NSNotification *) notification {
NSDictionary *infoDict = [notification userInfo];
NSMutableDictionary *userData = [self userDataForEventWithIdentifier: [infoDict objectForKey: @"identifier"]];
if ([infoDict objectForKey: @"starred"]) {
// Change in the starred property
[userData setObject: [infoDict objectForKey: @"starred"] forKey: @"starred"];
}
[[NSFileManager defaultManager] createDirectoryAtPath: [[[self class] userDataFileLocation] stringByDeletingLastPathComponent] withIntermediateDirectories: NO attributes: nil error: nil];
[[self eventsUserData] writeToFile: [[self class] userDataFileLocation] atomically: NO];
}
- (void) updateEventWithUserData: (LAEvent *) event {
NSMutableDictionary *userData = [self userDataForEventWithIdentifier: [event identifier]];
if ([userData objectForKey: @"starred"]) {
[event setStarred: [(NSNumber *)[userData objectForKey: @"starred"] boolValue]];
}
}
- (NSArray *)eventsInTimeInterval:(NSTimeInterval) timeInterval afterDate:(NSDate *)startDate {
NSMutableArray *selectedEvents = [NSMutableArray array];
NSEnumerator *eventsEnumerator = [events objectEnumerator];
LAEvent *currentEvent;
while (currentEvent = [eventsEnumerator nextObject]){
if ([[currentEvent startDate] isBetweenDate: startDate andDate: [startDate addTimeInterval:timeInterval]]) {
[selectedEvents addObject: currentEvent];
}
}
return selectedEvents;
}
- (NSArray *) eventsWhile:(NSDate *)whileDate {
NSMutableArray *selectedEvents = [NSMutableArray array];
NSEnumerator *eventsEnumerator = [events objectEnumerator];
LAEvent *currentEvent;
while (currentEvent = [eventsEnumerator nextObject]){
if ([whileDate isBetweenDate:[currentEvent startDate] andDate:[currentEvent endDate]]) {
[selectedEvents addObject: currentEvent];
}
}
return selectedEvents;
}
- (void) eventDatabaseUpdated: (NSNotification *) notification {
// Clear out all the caches
[tracksCache release];
tracksCache = nil;
//[starredCache release];
[cachedUniqueDays release];
cachedUniqueDays = nil;
[eventsOnDayCache release];
eventsOnDayCache = nil;
eventsOnDayCache = [[NSMutableDictionary alloc] init];
}
- (NSString*) mapHTMLForEvent: (LAEvent*) event {
//if ([[NSFileManager defaultManager] fileExistsAtPath: [NSString stringWithFormat: @"%@%@", [[NSBundle mainBundle] resourcePath], [event location]]])
//NSLog([NSString stringWithFormat: @"%@/%@.png", [[NSBundle mainBundle] resourcePath], [event location]]);
/* String for the path
[NSString stringWithFormat: @"%@/%@.png", [[NSBundle mainBundle] resourcePath], [event location]];
*/
if ([[NSFileManager defaultManager] fileExistsAtPath: [NSString stringWithFormat: @"%@/%@.png", [[NSBundle mainBundle] resourcePath], [event location]]]) {
return [NSString stringWithFormat: @"<img src=\"%@/%@.png\" />", [[NSBundle mainBundle] resourcePath], [event location]];
}
return @"Map Not Found!";
}
- (void) dealloc {
[[NSNotificationCenter defaultCenter] removeObserver: self];
[events release];
[super dealloc];
}
@end