// arch-tag: ACD5D879-7A7E-11D9-9C8D-000A957659CC
#import "Readings.h"
#import "Thermometer.h"
#import "TempReading.h"
#import "SparklineCell.h"
 
@implementation Readings
 
-(void)awakeFromNib
{
  therms=[[NSArray alloc] initWithObjects: nil];
  dateFormat=[[NSDateFormatter alloc] initWithDateFormat:@"%A, %H:%M:%S"
    allowNaturalLanguage:YES];
 
  // Get the default units
  NSString *ustring=[[NSUserDefaults standardUserDefaults]
    objectForKey:@"units"];
  [self setUnits: ustring];
 
  [[NSNotificationCenter defaultCenter]
        addObserver:self
        selector:@selector(gotThermometerList:)
        name:THERM_LIST
        object:nil];
 
  [[NSNotificationCenter defaultCenter]
        addObserver:self
        selector:@selector(dataUpdated:)
        name:DATA_UPDATED
        object:nil];
 
  [[NSNotificationCenter defaultCenter]
        addObserver:self
        selector:@selector(unitChanged:)
        name:UNIT_CHANGE
        object:nil];
}
 
-(void)setUnits:(NSString *)to
{
  if([to isEqual:@"c"]) {
    celsius=YES;
  } else {
    celsius=NO;
  }
}
 
-(void)unitChanged:(id)ob
{
  [self setUnits:[ob object]];
}
 
-(void)gotThermometerList:(id)notification
{
  // NSLog(@"Got a thermometer list:  %@", notification);
  [therms release];
  therms=[notification object];
  [therms retain];
  NSLog(@"Got my thermometers:  %@", therms);
}
 
-(void)dataUpdated:(id)anObject
{   
  // NSLog(@"Data was updated");
}
 
- (id)outlineView:(NSOutlineView *)outlineView child:(int)index ofItem:(id)item
{
  id rv=nil;
  if(item == nil) {
    rv=[therms objectAtIndex: index];
  } else {
    // NSLog(@"Getting reading at index %d", index);
    rv=[[item lastReadings] objectAtIndex: index];
  }
  return(rv);
}
 
- (BOOL)outlineView:(NSOutlineView *)outlineView isItemExpandable:(id)item
{
  BOOL rv=NO;
  if([item isKindOfClass: [Thermometer class]]) {
    rv=YES;
  }
  return(rv);
}
 
- (int)outlineView:(NSOutlineView *)outlineView numberOfChildrenOfItem:(id)item
{
  int rv=0;
  if(item == nil) {
    rv=[therms count];
  } else if([item isKindOfClass: [Thermometer class]]) {
    rv=[[item lastReadings] count];
  }
  return(rv);
}
 
- (id)outlineView:(NSOutlineView *)outlineView
  objectValueForTableColumn:(NSTableColumn *)tableColumn byItem:(id)item
{
  // NSLog(@"Asking for object value of %@ of item %@", [tableColumn identifier], item);
  id rv=nil;
  if([@"reading" isEqual:[tableColumn identifier]]) {
    float reading=[item reading];
    if(!celsius) {
      reading=CTOF(reading);
    }
    rv=[NSString stringWithFormat: @"%.2f", reading];
  } else if([@"graph" isEqual:[tableColumn identifier]]) {
    if([item isKindOfClass: [Thermometer class]]) {
      rv=[[NSMutableArray alloc]
        initWithCapacity: [[item lastReadings] count]];
      [rv autorelease];
      NSEnumerator *e=[[item lastReadings] objectEnumerator];
      TempReading *tr=nil;
      while( (tr = [e nextObject]) != nil) {
        SparklineDatum *d=[[SparklineDatum alloc]
          initWithTimestamp: [[tr readingTimestamp]
                    timeIntervalSince1970]
          value: [NSNumber numberWithFloat: [tr floatValue]]];
        [rv addObject: d];
 
        [d release];
      }
    }
  } else {
    if([item isKindOfClass: [Thermometer class]]) {
      NSString *label=[NSString stringWithFormat: @"%@ (%d)",
        [item name], [[item lastReadings] count]];
      rv=label;
    } else {
      rv=[dateFormat stringForObjectValue: [item readingTimestamp]];
    }
  }
  return(rv);
}
 
@end