/*

     File: ParserChoiceViewController.m

 Abstract: Provides an interface for choosing and running one of the two available parsers.

  Version: 1.4

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*/

#import "ParserChoiceViewController.h"

#import "SongsViewController.h"

#import "LibXMLParser.h"

#import "CocoaXMLParser.h"

@interface ParserChoiceViewController ()

@property (nonatomic, weak) IBOutlet UITableView *tableView;

@property (nonatomic, strong) UINavigationController *songsNavigationController;

@property (nonatomic, strong) SongsViewController *songsViewController;

@property (nonatomic, strong) NSIndexPath *parserSelection;

@end

#pragma mark -

@implementation ParserChoiceViewController

- (void)viewDidLoad {

    // set an initial parser selection

    self.parserSelection = [NSIndexPath indexPathForRow:0 inSection:0];

    _songsViewController = [[SongsViewController alloc] initWithStyle:UITableViewStylePlain];

    _songsNavigationController = [[UINavigationController alloc] initWithRootViewController:self.songsViewController];

    // place the start button in the table's footer view

    //

    // first create the header view

    UIView *footerView = [[UIView alloc] initWithFrame:CGRectZero];

    footerView.backgroundColor = [UIColor clearColor];

    UIButton *startButton = [UIButton buttonWithType:UIButtonTypeRoundedRect];

    [startButton setTitle:@"Start" forState:UIControlStateNormal];

    [startButton addTarget:self action:@selector(startParser:) forControlEvents:UIControlEventTouchUpInside];

    [startButton sizeToFit];

    startButton.autoresizingMask = UIViewAutoresizingFlexibleLeftMargin | UIViewAutoresizingFlexibleRightMargin;

    [footerView addSubview:startButton];

    CGRect newFrame = footerView.frame;

    newFrame.size.height = startButton.frame.size.height;

    footerView.frame = newFrame;

    self.tableView.tableFooterView = footerView;

    // now center the button within the header view

    newFrame = startButton.frame;

    newFrame.origin.x = (footerView.frame.size.width - newFrame.size.width) / 2;

    newFrame.origin.y = 8.0;

    startButton.frame = newFrame;

}

- (IBAction)startParser:(id)sender {

    [self.navigationController presentModalViewController:self.songsNavigationController animated:YES];

    [self.songsViewController parseWithParserType:self.parserSelection.row];

}

#pragma mark - UITableViewDataSource

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

    return 2;

}

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

    static NSString * const kCellIdentifier = @"MyCell";

    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:kCellIdentifier];

    if (cell == nil) {

        cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:kCellIdentifier];

    }

    cell.textLabel.text = (indexPath.row == 0) ? [CocoaXMLParser parserName] : [LibXMLParser parserName];

    cell.accessoryType = ([indexPath isEqual:self.parserSelection]) ? UITableViewCellAccessoryCheckmark : UITableViewCellAccessoryNone;

    return cell;

}

#pragma mark - UITableViewDelegate

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {

    self.parserSelection = indexPath;

    [tableView deselectRowAtIndexPath:indexPath animated:YES];

    [tableView reloadData];

}

@end