/*

 File: PlayerModel.m

 Abstract: Provide an example of how to successfully submit scores to leaderboards

 and store them when submission fails.

 Version: 1.0

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 */

#import "PlayerModel.h"

@implementation PlayerModel

@synthesize storedScores, 

            storedScoresFilename;

- (id)init

{

    self = [super init];

    if (self) {

        NSString* path = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0];

        storedScoresFilename = [[NSString alloc] initWithFormat:@"%@/%@.storedScores.plist",path,[GKLocalPlayer localPlayer].playerID];

        writeLock = [[NSLock alloc] init];

    }

    return self;

}

- (void)dealloc

{

    [storedScores release];

    [writeLock release];

    [storedScoresFilename release];   

    [super dealloc];

}

// Attempt to resubmit the scores.

- (void)resubmitStoredScores

{

    if (storedScores) {

        // Keeping an index prevents new entries to be added when the network is down 

        int index = [storedScores count]-1;

        while( index >= 0 ) {

            GKScore * score = [storedScores objectAtIndex:index];

            [self submitScore:score];

            [storedScores removeObjectAtIndex:index];

            index--;

        }

        [self writeStoredScore];

    }

}

// Load stored scores from disk.

- (void)loadStoredScores

{

    NSArray *  unarchivedObj = [NSKeyedUnarchiver unarchiveObjectWithFile:storedScoresFilename];

    if (unarchivedObj) {

        storedScores = [[NSMutableArray alloc] initWithArray:unarchivedObj];

        [self resubmitStoredScores];

    } else {

        storedScores = [[NSMutableArray alloc] init];

    }

}

// Save stored scores to file. 

- (void)writeStoredScore

{

    [writeLock lock];

    NSData * archivedScore = [NSKeyedArchiver archivedDataWithRootObject:storedScores];

    NSError * error;

    [archivedScore writeToFile:storedScoresFilename options:NSDataWritingFileProtectionNone error:&error];

    if (error) {

        //  Error saving file, handle accordingly 

    }

    [writeLock unlock];

}

// Store score for submission at a later time.

- (void)storeScore:(GKScore *)score 

{

    [storedScores addObject:score];

    [self writeStoredScore];

}

// Attempt to submit a score. On an error store it for a later time.

- (void)submitScore:(GKScore *)score 

{

    if ([GKLocalPlayer localPlayer].authenticated) {

        if (!score.value) {

            // Unable to validate data. 

            return;

        }

        // Store the scores if there is an error. 

        [score reportScoreWithCompletionHandler:^(NSError *error){

            if (!error || (![error code] && ![error domain])) {

                // Score submitted correctly. Resubmit others

                [self resubmitStoredScores];

            } else {

                // Store score for next authentication. 

                [self storeScore:score];

            }

        }];

    } 

}

@end