Objective-C wrapper for the "Get There Sooner" live departure information service from from Travel South Yorkshire Transport. Scrapes data from http://gettheresooner.travelsouthyorkshire.com/MobileNaptan.aspx
(NOTE: Previously the data was obtained by scraping the YourNextBus service, however this no longer works. This cocoapod gets it's name from that.)
In the UK every public transport stop (Bus, Tram, Train etc) is a known as a "National Public Transport Access Node". Each of these nodes is given a unique identifier: an 8 digit number called a NaPTANCode. More information here: https://www.gov.uk/government/publications/national-public-transport-access-node-schema
To obtain live data for a stop, the NaPTAN code is specified to a LJSYourNextBusClient object for either South or West Yorkshire. South Yorkshire codes begin with "310" and West Yorkshire code being with "450". Use the correct subclass for your needs: either LJSSouthYorkshireClient or LJSWestYorkshireClient. These subclasses construct a URL to the live data for a specific region. This URL is used by the base LJSYourNextBusClient to get live data.
Note: do not create and use instances of LJSYourNextBusClient directly. Either use a LJSSouthYorkshireClient or LJSWestYorkshireClient instance or create a custom subclass yourself, overriding the method to construct the URL to the live data.
// LJSSouthYorkshireClient or LJSWestYorkshireClient
LJSYourNextBusClient *client = [LJSSouthYorkshireClient new];
client.clientDelegate = self;
[client getLiveDataForNaPTANCode:@"37010200"];
#pragma mark - LJSYourNextBusStopDelegate
- (void)client:(LJSYourNextBusClient *)client failedWithError:(NSError *)error NaPTANCode:(NSString *)NaPTANCode {
NSLog(@"Failed to get live data for NaPTAN: %@ with error: %@", NaPTANCode, error);
}
- (void)client:(LJSYourNextBusClient *)client returnedLiveDataResult:(LJSLiveDataResult *)result {
LJSStop *stop = result.stop;
NSLog(@"Live Data for: %@ %@", stop.NaPTANCode, stop.title);
for (LJSDeparture *departure in [stop sortedDepartures]) {
NSLog(@"\t%@ at %@", departure.service.title, departure.countdownString);
}
/*
* Prints:
* 37010200 Meadowhall Intc at 2015-08-01 6:15:00 PM +0000
* X78 at Due → Sheffield Intc
* 76 at Due → Low Edges
* X78 at 3 Mins → Sheffield Intc
* 38 at 5 Mins → Jordanthorpe
* 38 at 18 Mins → Sheffield Intc
* X78 at 6:40 PM → Sheffield Intc
* 35 at 6:40 PM → Hillsborough Intc
*/
}
Data model.
┌───────────────┐ ┌───────────────────────────┐
│Stop │ ┌───────────────┐ │Departure │
│ - NaPTANCode │ │Service │ │ - destination │
│ - title │ │ - title │ │ - expectedDepartureDate │
│ - liveDate │────services────▶│ - stop │──────departures────▶│ - countdownString │
│ - laterURL │ │ - departures │ │ - minutesUntilDeparture │
│ - earlierURL │ └───────────────┘ │ - hasLowFloorAccess │
│ - services │ │ - service │
└───────────────┘ └───────────────────────────┘
Example of the instantiated objects from the above example for Meadowhall Intc.
┌─────────────────────┐
┌──────────────────────┐ │Departure │
│Stop │ ┌───────────────────┐ │ - Sheffield Intc │
│ - 37010200 │ │Service │ │ - 6:15 PM │
│ - Meadowhall Intc │───┬───▶│ - X78 ├─────┬─────▶│ - Due │
│ - 31/07/14 6:00 PM │ │ │ - Meadowhall Intc │ │ │ - 0 │
└──────────────────────┘ │ └───────────────────┘ │ │ - X78 │
│ │ └─────────────────────┘
│ │ ┌─────────────────────┐
│ │ │Departure │
│ │ │ - Sheffield Intc │
│ │ │ - 6:18 PM │
│ ├─────▶│ - 3 Mins │
│ │ │ - 3 │
│ │ │ - X78 │
│ │ └─────────────────────┘
│ │ ┌─────────────────────┐
│ │ │Departure │
│ │ │ - Sheffield Intc │
│ │ │ - 6:40 PM │
│ └─────▶│ - 6:40 PM │
│ │ - 25 │
│ │ - X78 │
│ └─────────────────────┘
│ ┌─────────────────────┐
│ │Departure │
│ ┌───────────────────┐ │ - Low Edges │
│ │Service │ │ - 6:15 PM │
├──▶│ - 76 │────────────▶│ - Due │
│ │ - Meadowhall Intc │ │ - 0 │
│ └───────────────────┘ │ - 76 │
│ └─────────────────────┘
│ ┌─────────────────────┐
│ │Departure │
│ ┌───────────────────┐ │ - Jordanthorpe │
│ │Service │ │ - 6:20 PM │
├──▶│ - 38 │──────┬─────▶│ - 5 Mins │
│ │ - Meadowhall Intc │ │ │ - 5 │
│ └───────────────────┘ │ │ - 38 │
│ │ └─────────────────────┘
│ │ ┌─────────────────────┐
│ │ │Departure │
│ │ │ - Sheffield Intc │
│ │ │ - 6:33 PM │
│ └─────▶│ - 18 Mins │
│ │ - 18 │
│ │ - 38 │
│ └─────────────────────┘
│ ┌─────────────────────┐
│ │Departure │
│ ┌───────────────────┐ │ - Hillsborough Intc │
│ │Service │ │ - 6:40 PM │
└───▶│ - 35 │───────────▶│ - 25 Mins │
│ - Meadowhall Intc │ │ - 25 │
└───────────────────┘ │ - 35 │
└─────────────────────┘
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