/*

 Copyright (C) 2015 Apple Inc. All Rights Reserved.

 See LICENSE.txt for this sample’s licensing information

 Abstract:

 Displays statistics about each parser, including its average time to download the XML data, parse it, and the total average time from beginning the download to completing the parse.

 */

#import "StatsViewController.h"

#import "Statistics.h"

#import "CocoaXMLParser.h"

#import "LibXMLParser.h"

#pragma mark -

@implementation StatsViewController

- (void)viewDidLoad {

    [super viewDidLoad];

    // We use a slightly shorter than usual row height so that all the statistics fit on the page without scrolling.

    // This should be used cautiously, as it can easily result in a user interface that provides a bad experience. It is

    // acceptable here partly because the table does not support any user interaction.

    // 

    // This could also be achieved using the UITableViewDelegate method tableView:heightForRowAtIndexPath:

    // However, this comes with a performance penalty, as it is called for each row in the table. Unless the rows

    // need to be of varying heights, the rowHeight property should be used.

    //

    self.tableView.allowsSelection = NO;

    self.tableView.rowHeight = 31;

    // Set the title

    self.title = @"Statistics";

}

- (void)viewDidUnload {

    self.tableView = nil;

    [super viewDidUnload];

}

- (void)viewWillAppear:(BOOL)animated {

    [super viewWillAppear:animated];

    [self.tableView reloadData];

}

#pragma mark - UITableViewDataSource

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {

    return 2;

}

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {

    return 3;

}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {

    static NSString *kStatisticsCellID = @"StatisticsCell";

    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:kStatisticsCellID];

    if (cell == nil) {

        cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleValue1 reuseIdentifier:kStatisticsCellID];

    }

    switch (indexPath.row) {

        case 0: {

            cell.textLabel.text = NSLocalizedString(@"Mean Download Time", @"Mean Download Time format");

            cell.detailTextLabel.text = [NSString stringWithFormat:@"%.4fs", MeanDownloadTimeForParserType((XMLParserType)indexPath.section)];

        } break;

        case 1: {

            cell.textLabel.text = NSLocalizedString(@"Mean Parse Time", @"Mean Parse Time format");

            cell.detailTextLabel.text = [NSString stringWithFormat:@"%.4fs", MeanParseTimeForParserType((XMLParserType)indexPath.section)];

        } break;

        case 2: {

            cell.textLabel.text = NSLocalizedString(@"Mean Total Time", @"Mean Total Time format");

            cell.detailTextLabel.text = [NSString stringWithFormat:@"%.4fs", MeanTotalTimeForParserType((XMLParserType)indexPath.section)];

        } break;

    }

    return cell;

}

- (NSString *)tableView:(UITableView *)tv titleForHeaderInSection:(NSInteger)section {

    NSUInteger numberOfRuns = NumberOfRunsForParserType((int)section);

    NSString *parserName = (section == 0) ? [CocoaXMLParser parserName] : [LibXMLParser parserName];

    NSString *format = (numberOfRuns == 1) ? NSLocalizedString(@"%@ (%d run):", @"One Run format") : NSLocalizedString(@"%@ (%d runs):", @"Multiple Runs format");

    return [NSString stringWithFormat:format, parserName, numberOfRuns];

}

// action method for the button that resets statistics

- (IBAction)resetStatistics:(id)sender {

    ResetStatisticsDatabase();

    [self.tableView reloadData];

}

@end