/*

     File: RootViewController.m

 Abstract: n/a

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 */

#import "RootViewController.h"

#import "EADSessionTransferViewController.h"

#import "EADSessionController.h"

#import <ExternalAccessory/ExternalAccessory.h>

@implementation RootViewController

- (void)dealloc

{

    [super dealloc];

}

- (void)viewDidLoad {

    // Create the view that gets shown when no accessories are connected

    _noExternalAccessoriesPosterView = [[UIView alloc] initWithFrame:[[UIScreen mainScreen] bounds]];

    [_noExternalAccessoriesPosterView setBackgroundColor:[UIColor whiteColor]];

    _noExternalAccessoriesLabelView = [[UILabel alloc] initWithFrame:CGRectMake(60, 170, 240, 50)];

    [_noExternalAccessoriesLabelView setText:@"No Accessories Connected"];

    [_noExternalAccessoriesPosterView addSubview:_noExternalAccessoriesLabelView];

    [[self view] addSubview:_noExternalAccessoriesPosterView];

    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(_accessoryDidConnect:) name:EAAccessoryDidConnectNotification object:nil];

    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(_accessoryDidDisconnect:) name:EAAccessoryDidDisconnectNotification object:nil];

    [[EAAccessoryManager sharedAccessoryManager] registerForLocalNotifications];

    _eaSessionController = [EADSessionController sharedController];

    _accessoryList = [[NSMutableArray alloc] initWithArray:[[EAAccessoryManager sharedAccessoryManager] connectedAccessories]];

    [self setTitle:@"Accessories"];

    if ([_accessoryList count] == 0) {

        [_noExternalAccessoriesPosterView setHidden:NO];

    } else {

        [_noExternalAccessoriesPosterView setHidden:YES];

    }

    [super viewDidLoad];

}

- (void)viewDidUnload {

    [[NSNotificationCenter defaultCenter] removeObserver:self name:EAAccessoryDidConnectNotification object:nil];

    [[NSNotificationCenter defaultCenter] removeObserver:self name:EAAccessoryDidDisconnectNotification object:nil];

    [_accessoryList release];

    _accessoryList = nil;

    [_selectedAccessory release];

    _selectedAccessory = nil;

    [_protocolSelectionActionSheet release];

    _protocolSelectionActionSheet = nil;

    [_noExternalAccessoriesPosterView release];

    [_noExternalAccessoriesLabelView release];

    [super viewDidUnload];

}

#pragma mark UIActionSheetDelegate methods

- (void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex

{

    if (_selectedAccessory && (buttonIndex >= 0) && (buttonIndex < [[_selectedAccessory protocolStrings] count]))

    {

        [_eaSessionController setupControllerForAccessory:_selectedAccessory

            withProtocolString:[[_selectedAccessory protocolStrings] objectAtIndex:buttonIndex]]; 

        EADSessionTransferViewController *sessionTransferViewController =

            [[EADSessionTransferViewController alloc] initWithNibName:@"EADSessionTransfer" bundle:nil];

        [[self navigationController] pushViewController:sessionTransferViewController animated:YES];

        [sessionTransferViewController release];

    }

    [_selectedAccessory release];

    _selectedAccessory = nil;

    [_protocolSelectionActionSheet release];

    _protocolSelectionActionSheet = nil;

}

#pragma mark UITableViewDataSource methods

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

    return 1;

}

// Customize the number of rows in the table view.

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

    return [_accessoryList count];

}

// Customize the appearance of table view cells.

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

    static NSString *eaAccessoryCellIdentifier = @"eaAccessoryCellIdentifier";

    NSUInteger row = [indexPath row];

    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:eaAccessoryCellIdentifier];

    if (cell == nil) {

        cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:eaAccessoryCellIdentifier] autorelease];

    }

    NSString *eaAccessoryName = [[_accessoryList objectAtIndex:row] name];

    if (!eaAccessoryName || [eaAccessoryName isEqualToString:@""]) {

        eaAccessoryName = @"unknown";

    }

    [[cell textLabel] setText:eaAccessoryName];

    return cell;

}

#pragma mark UITableViewDelegate methods

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

    NSUInteger row = [indexPath row];

    _selectedAccessory = [[_accessoryList objectAtIndex:row] retain];

    _protocolSelectionActionSheet = [[UIActionSheet alloc] initWithTitle:@"Select Protocol" delegate:self cancelButtonTitle:nil destructiveButtonTitle:nil otherButtonTitles: nil];

    NSArray *protocolStrings = [_selectedAccessory protocolStrings];

    for(NSString *protocolString in protocolStrings) {

        [_protocolSelectionActionSheet addButtonWithTitle:protocolString];

    }

    [_protocolSelectionActionSheet setCancelButtonIndex:[_protocolSelectionActionSheet addButtonWithTitle:@"Cancel"]];

    [_protocolSelectionActionSheet showInView:[self tableView]];

    [[self tableView] deselectRowAtIndexPath:indexPath animated:YES];

}

#pragma mark Internal

- (void)_accessoryDidConnect:(NSNotification *)notification {

    EAAccessory *connectedAccessory = [[notification userInfo] objectForKey:EAAccessoryKey];

    [_accessoryList addObject:connectedAccessory];

    if ([_accessoryList count] == 0) {

        [_noExternalAccessoriesPosterView setHidden:NO];

    } else {

        [_noExternalAccessoriesPosterView setHidden:YES];

    }

    NSIndexPath *indexPath = [NSIndexPath indexPathForRow:([_accessoryList count] - 1) inSection:0];

    [[self tableView] insertRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation:UITableViewRowAnimationLeft];

}

- (void)_accessoryDidDisconnect:(NSNotification *)notification {

    EAAccessory *disconnectedAccessory = [[notification userInfo] objectForKey:EAAccessoryKey];

    if (_selectedAccessory && [disconnectedAccessory connectionID] == [_selectedAccessory connectionID])

    {

        [_protocolSelectionActionSheet dismissWithClickedButtonIndex:-1 animated:YES];

    }

    int disconnectedAccessoryIndex = 0;

    for(EAAccessory *accessory in _accessoryList) {

        if ([disconnectedAccessory connectionID] == [accessory connectionID]) {

            break;

        }

        disconnectedAccessoryIndex++;

    }

    if (disconnectedAccessoryIndex < [_accessoryList count]) {

        [_accessoryList removeObjectAtIndex:disconnectedAccessoryIndex];

        NSIndexPath *indexPath = [NSIndexPath indexPathForRow:disconnectedAccessoryIndex inSection:0];

        [[self tableView] deleteRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation:UITableViewRowAnimationRight];

    } else {

        NSLog(@"could not find disconnected accessory in accessory list");

    }

    if ([_accessoryList count] == 0) {

        [_noExternalAccessoriesPosterView setHidden:NO];

    } else {

        [_noExternalAccessoriesPosterView setHidden:YES];

    }

}

@end