//
//  SharingAccountsViewController.m
//  pithos-ios
//
// Copyright 2011 GRNET S.A. All rights reserved.
//
// Redistribution and use in source and binary forms, with or
// without modification, are permitted provided that the following
// conditions are met:
// 
//   1. Redistributions of source code must retain the above
//      copyright notice, this list of conditions and the following
//      disclaimer.
// 
//   2. Redistributions in binary form must reproduce the above
//      copyright notice, this list of conditions and the following
//      disclaimer in the documentation and/or other materials
//      provided with the distribution.
// 
// THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
// OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
// USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
// AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
// LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
// ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
// 
// The views and conclusions contained in the software and
// documentation are those of the authors and should not be
// interpreted as representing official policies, either expressed
// or implied, of GRNET S.A.

#import "SharingAccountsViewController.h"
#import "UIViewController+Conveniences.h"
#import "ContainersViewController.h"
#import "PithosImageViewController.h"
#import "OpenStackRequest.h"
#import "OpenStackAccount.h"
#import "AccountManager.h"
#import "ActivityIndicatorView.h"
#import "SBJSON.h"
#import "AccountHomeViewController.h"
#import "APICallback.h"

@implementation SharingAccountsViewController

@synthesize tableView, account, sharingAccounts, accountHomeViewController;

#pragma mark - View lifecycle

- (void)viewDidLoad {
    [super viewDidLoad];
    self.navigationItem.title = @"Sharing Accounts";
    [self addHomeButton];
    sharingAccounts = [[NSMutableArray alloc] init];
}

- (void)viewWillAppear:(BOOL)animated {
    [super viewWillAppear:animated];
    
    if ([UIDevice currentDevice].userInterfaceIdiom == UIUserInterfaceIdiomPad) {
        PithosImageViewController *vc = [[PithosImageViewController alloc] initWithNibName:@"PithosImageViewController" bundle:nil];
        [self presentPrimaryViewController:vc];
        [vc release];
    }
    
    [self refreshButtonPressed:nil];
}

- (void)viewDidUnload {
    [super viewDidUnload];
    account.sharingAccount = nil;
}

#pragma mark - Memory management

- (void)dealloc {
    [tableView release];
    [account release];
    [sharingAccounts release];
    [super dealloc];
}

#pragma mark - Button Handlers

- (IBAction)homeButtonPressed:(id)sender {
    [self.navigationController popToViewController:accountHomeViewController animated:YES];
}

- (IBAction)refreshButtonPressed:(id)sender {
    __block ActivityIndicatorView *activityIndicatorView = [ActivityIndicatorView activityIndicatorViewWithText:@"Loading..."
                                                                                                   andAddToView:self.view];
    [[self.account.manager getSharingAccounts]
     success:^(OpenStackRequest *request) {
         SBJSON *parser = [[SBJSON alloc] init];
         NSArray *jsonObjects = [parser objectWithString:[request responseString]];
         
         [sharingAccounts removeAllObjects];
         for (int i = 0; i < [jsonObjects count]; i++) {
             NSDictionary *dict = [jsonObjects objectAtIndex:i];
             [sharingAccounts addObject:[dict objectForKey:@"name"]];
         }
         [parser release];
         contentsLoaded = YES;
         
         [activityIndicatorView removeFromSuperview]; 
         [self.tableView reloadData];
     }
     failure:^(OpenStackRequest *request) {
         contentsLoaded = NO;
         [activityIndicatorView removeFromSuperview];
         if (request.responseStatusCode != 0) {
             [self alert:@"There was a problem loading sharing accounts." request:request addAccountSettingsButton:YES];
         }
     }];
}

#pragma mark - UITableViewDataSource

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
    if ([sharingAccounts count] == 0) {
        self.tableView.allowsSelection = NO;
        self.tableView.scrollEnabled = NO;
    } else {
        self.tableView.allowsSelection = YES;
        self.tableView.scrollEnabled = YES;
    }
    return MAX(contentsLoaded ? 1 : 0, [sharingAccounts count]);
}

- (CGFloat)tableView:(UITableView *)aTableView heightForRowAtIndexPath:(NSIndexPath *)indexPath {
    if ([sharingAccounts count] == 0) {
        return aTableView.frame.size.height;
    } else {
        return aTableView.rowHeight;
    }
}

- (UITableViewCell *)tableView:(UITableView *)aTableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
    if ([sharingAccounts count] == 0) {
        return [self tableView:tableView emptyCellWithImage:[UIImage imageNamed:@"OthersSharedLarge.png"]
                         title:@"No sharing accounts"
                      subtitle:@""];
    } else {
        static NSString *CellIdentifier = @"Cell";
        
        UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
        if (cell == nil) {
            cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier] autorelease];
            cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
        }
        cell.textLabel.text = [sharingAccounts objectAtIndex:indexPath.row];
        cell.imageView.image = [UIImage imageNamed:@"myShared.png"];
        
        return cell;
    }
}

#pragma mark - UITableViewDelegate

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
    if ([sharingAccounts count] == 0)
        return;
    
    ContainersViewController *vc = [[ContainersViewController alloc] initWithNibName:@"ContainersViewController" bundle:nil];
    account.shared = NO;
    account.sharingAccount = [sharingAccounts objectAtIndex:indexPath.row];
    vc.account = account;
    vc.accountHomeViewController = accountHomeViewController;
    [self.navigationController pushViewController:vc animated:YES];
    [vc release];
    [self.tableView deselectRowAtIndexPath:indexPath animated:YES];
}

@end