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//

//  EditAccountGroupsViewController.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 "EditAccountGroupsViewController.h"

#import "UIViewController+Conveniences.h"

#import "AccountManager.h"

#import "OpenStackRequest.h"

#import "APICallback.h"

#define kGroupDetails 0 

#define kSave 1

#define kRemove 2

@implementation EditAccountGroupsViewController

@synthesize account;

@synthesize groupName, groupUsers, removeGroupEnabled;

@synthesize groups,metadata;

- (void)dealloc

{

    [groupName release];

    [groupUsers release];

    [account release];

    [metadata release];

    [groups release];

    [activityIndicatorView release];

    [super dealloc];

}

#pragma mark - View lifecycle

- (void)viewDidLoad

{

    [super viewDidLoad];

}

- (void)viewDidUnload

{

    [super viewDidUnload];

}

- (void)viewWillAppear:(BOOL)animated

{

    [super viewWillAppear:animated];

}

- (void)viewDidAppear:(BOOL)animated

{

    [super viewDidAppear:animated];

}

- (void)viewWillDisappear:(BOOL)animated

{

    [super viewWillDisappear:animated];

}

- (void)viewDidDisappear:(BOOL)animated

{

    [super viewDidDisappear:animated];

}

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation {

    return (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad) || (toInterfaceOrientation == UIInterfaceOrientationPortrait);

}

#pragma mark - Table view data source

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView

{

    if (removeGroupEnabled)

        return 3;

    else

        return 2;

}

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

{

    if (section == kGroupDetails)

        return 2;

    else

        return 1;

}

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

{

    static NSString *CellIdentifier = @"Cell";

    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];

    if (cell == nil) {

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

    }

    cell.textLabel.text = @"";

    cell.accessoryType = UITableViewCellAccessoryNone;

    if (indexPath.section == kGroupDetails) {

        UITextField *textField = nil;

        for (id subView in cell.contentView.subviews) {

            if ([subView isKindOfClass:[UITextField class]]) {

                textField = (UITextField *)subView;

            }

        }

        if (textField == nil) {

            CGRect bounds = [cell.contentView bounds];

            CGRect rect = CGRectInset(bounds, 10.0, 10.0);                        

            textField = [[UITextField alloc] initWithFrame:rect];

            [textField setFrame:rect];

        }

        [textField setClearButtonMode:UITextFieldViewModeWhileEditing];

        [textField setBackgroundColor:[UIColor clearColor]];

        [textField setOpaque:YES];

        [textField setAutocorrectionType:UITextAutocorrectionTypeNo];

        [textField setAutocapitalizationType:UITextAutocapitalizationTypeNone];

        [textField setDelegate:self];

        textField.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;

        if (indexPath.row == 0) {

            textField.returnKeyType = UIReturnKeyNext;

            textField.placeholder = @"Group name";

            textField.text = self.groupName;

            textField.tag = 0;

        }

        else if (indexPath.row == 1) {

            textField.returnKeyType = UIReturnKeyDefault;

            textField.placeholder = @"Group users";

            textField.text = self.groupUsers;

            textField.tag = 1;

        }

        cell.selectionStyle = UITableViewCellSelectionStyleNone;

        [cell.contentView addSubview:textField];

    }

    else if (indexPath.section == kSave) { 

        cell.textLabel.text = @"Save";

    }

    else if (indexPath.section == kRemove) {

        cell.textLabel.text = @"Remove";

    }

    return cell;

}

#pragma mark - Table view delegate

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

{

    NSString *activityMessage;

    NSIndexPath *keyCellIndexPath;

    NSIndexPath *valueCellIndexPath;

    UITableViewCell *cell;

    if (indexPath.section != kGroupDetails)

        [self.view endEditing:YES];

    if (indexPath.section == kSave) {

        keyCellIndexPath = [NSIndexPath indexPathForRow:0 inSection:kGroupDetails];

        cell = [self.tableView cellForRowAtIndexPath:keyCellIndexPath];

        UITextField *textField = [[cell.contentView subviews] objectAtIndex:0];

        NSString *newGroupName = textField.text;

        if (![self userInputIsValid:newGroupName fieldName:@"Group name"]) {

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

            return;

        }

        valueCellIndexPath = [NSIndexPath indexPathForRow:1 inSection:kGroupDetails];

        cell = [self.tableView cellForRowAtIndexPath:valueCellIndexPath];

        textField = [[cell.contentView subviews] objectAtIndex:0];

        NSString *newGroupUsers = textField.text;

        if (![self userInputIsValid:newGroupUsers fieldName:@"Group users"]) {

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

            return;

        }

        activityMessage = @"Saving group";

        [activityIndicatorView release];

        activityIndicatorView = [[ActivityIndicatorView alloc] initWithFrame:[ActivityIndicatorView frameForText:activityMessage]text:activityMessage];

        [activityIndicatorView addToView:self.view];

        [groups removeObjectForKey:groupName];

        [groups setObject:newGroupUsers forKey:newGroupName];

        NSDictionary *accountInfo = [NSDictionary dictionaryWithObjectsAndKeys:groups, @"groups",

                                        metadata, @"metadata",

                                        nil

                                        ];

        [[self.account.manager writeAccountMetadata:accountInfo] 

         success:^(OpenStackRequest *request) {

             [activityIndicatorView removeFromSuperview];

             self.groupName = newGroupName;

             self.groupUsers = newGroupUsers;

             self.removeGroupEnabled = YES;

             self.navigationItem.title = @"Edit Group";

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

             [self.tableView reloadData]; 

         }

         failure:^(OpenStackRequest *request) {

             [activityIndicatorView removeFromSuperview];

             [groups removeObjectForKey:newGroupName];

             [groups setObject:self.groupUsers forKey:self.groupName];

             [self.tableView reloadData];

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

             [self alert:@"There was a problem saving the group information." request:request];

         }];

    } else if (indexPath.section == kRemove) {

        activityMessage = @"Removing group";

        [activityIndicatorView release];

        activityIndicatorView = [[ActivityIndicatorView alloc] initWithFrame:[ActivityIndicatorView frameForText:activityMessage] text:activityMessage];

        [activityIndicatorView addToView:self.view];

        [groups removeObjectForKey:groupName];

        NSDictionary *accountInfo = [NSDictionary dictionaryWithObjectsAndKeys:groups, @"groups",

                                        metadata, @"metadata",

                                        nil

                                        ];

        [[self.account.manager writeAccountMetadata:accountInfo] 

         success:^(OpenStackRequest *request) {

             [activityIndicatorView removeFromSuperview];

             self.groupName = @"";

             self.groupUsers = @"";

             self.removeGroupEnabled = NO;

             [self.tableView reloadData];

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

         }

         failure:^(OpenStackRequest *request) {

             [activityIndicatorView removeFromSuperview];

             [groups setObject:groupUsers forKey:groupName];

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

             [self alert:@"There was a problem removing the group information." request:request];

         }];

    }

}

#pragma mark - Textfield delegate

- (BOOL)textFieldShouldReturn:(UITextField *)textField

{

    if ([textField returnKeyType] == UIReturnKeyNext)

    {

        [self userInputIsValid:textField.text fieldName:@"Group name"];

        NSInteger nextTag = [textField tag] + 1;

        UIView *nextTextField = [self.tableView viewWithTag:nextTag];

        [nextTextField becomeFirstResponder];

    }

    else

    {

        [self userInputIsValid:textField.text fieldName:@"Group users"];

        [textField resignFirstResponder];

    }

    return YES;

}

#pragma mark - Helper methods

- (BOOL)userInputIsValid:(NSString *)input fieldName:(NSString *)fieldName {

    if (![input length] || ![[input stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]] length]) {

        [self alert:@"Invalid input" message:[NSString stringWithFormat:@"%@ field cannot be empty", fieldName]];

        return NO;

    }

    NSCharacterSet *set = [NSCharacterSet characterSetWithCharactersInString:@"= "];

    if ([input rangeOfCharacterFromSet:set].location != NSNotFound) {

        [self alert:@"Invalid input" message:[NSString stringWithFormat:@"%@ field cannot contain '=' or whitespace characters", fieldName]];

        return NO;

    }

    return YES;

}

@end