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//

//  EditPolicyViewController.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 "EditPolicyViewController.h"

#import "UIViewController+Conveniences.h"

#import "AccountManager.h"

#import "ContainerDetailViewController.h"

#import "ContainersViewController.h"

#import "APICallback.h"

#define kVersioning 0

#define kQuota 1

#define kSavePolicy 2

@implementation EditPolicyViewController

@synthesize account, container, containerDetailViewController;

@synthesize oldVersioning, oldQuota;

- (void)dealloc

{

    [account release];

    [container release];

    [oldVersioning release];

    [super dealloc];

}

- (void)didReceiveMemoryWarning

{

    [super didReceiveMemoryWarning];

}

#pragma mark - Helper Methods

- (void) configVersioningVariables 

{

    if ([container.versioning rangeOfString:@"auto"].location != NSNotFound) {

        autoVersioning = YES;

        manualVersioning = NO;

        noVersioning = NO;

    }

    else if ([container.versioning rangeOfString:@"manual"].location != NSNotFound) {

        autoVersioning = NO;

        manualVersioning = YES;

        noVersioning = NO;

    }

    else if ([container.versioning rangeOfString:@"none"].location != NSNotFound) {

        autoVersioning = NO;

        manualVersioning = NO;

        noVersioning = YES;

    }      

}

#pragma mark - View lifecycle

- (void)viewDidLoad

{

    [super viewDidLoad];

    [self configVersioningVariables];

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

}

- (void)viewDidUnload

{

    [super viewDidUnload];

}

- (void)viewWillAppear:(BOOL)animated

{

    [super viewWillAppear:animated];

    self.oldQuota = container.quota;

}

- (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

{

    return 3;

}

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

{

    if (section == kVersioning)

        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];

    }

    if (indexPath.section == kVersioning) {

        cell.selectionStyle = UITableViewCellSelectionStyleNone;

        if (indexPath.row == 0) {

            cell.textLabel.text = @"Auto";

            if (autoVersioning) 

                cell.accessoryType = UITableViewCellAccessoryCheckmark;

            else

                cell.accessoryType = UITableViewCellAccessoryNone;

        }

        else if (indexPath.row == 1) {

            cell.textLabel.text = @"Manual";

            if (manualVersioning) 

                cell.accessoryType = UITableViewCellAccessoryCheckmark;

            else

                cell.accessoryType = UITableViewCellAccessoryNone;

        }

        else if (indexPath.row == 2) {

            cell.textLabel.text = @"None";

            if (noVersioning)

                cell.accessoryType = UITableViewCellAccessoryCheckmark;

            else

                cell.accessoryType = UITableViewCellAccessoryNone;

        }

    }

    else if (indexPath.section == kQuota) {

        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] autorelease];

            [textField setFrame:rect];

        }

        [textField setClearButtonMode:UITextFieldViewModeWhileEditing];

        [textField setBackgroundColor:[UIColor clearColor]];

        [textField setOpaque:YES];

        [textField setAutocorrectionType:UITextAutocorrectionTypeNo];

        [textField setAutocapitalizationType:UITextAutocapitalizationTypeNone];

        [textField setDelegate:self];

        textField.keyboardType = UIKeyboardTypeNumberPad;

        textField.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;

        cell.selectionStyle = UITableViewCellSelectionStyleNone;

        textField.text = [NSString stringWithFormat:@"%u", self.container.quota];

        [cell.contentView addSubview:textField];

        cell.accessoryType = UITableViewCellAccessoryNone;

    } 

    else if (indexPath.section == kSavePolicy) {

        cell.textLabel.text = @"Save";

        cell.accessoryType = UITableViewCellAccessoryNone;

        cell.selectionStyle = UITableViewCellSelectionStyleBlue;

    }

    return cell;

}

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

{

    if (section == kVersioning)

        return @"Versioning";

    else if (section == kQuota)

        return @"Quota";

    else

        return nil;

}

#pragma mark - Table view delegate

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

{

    if (indexPath.section != kQuota)

        [self.view endEditing:YES];

    if (indexPath.section == kVersioning) {

        if (indexPath.row == 0) {

            if (!autoVersioning) {

                autoVersioning = YES;

                manualVersioning = NO;

                noVersioning = NO;

            }

        }

        else if (indexPath.row == 1) {

            if (!manualVersioning) {

                autoVersioning = NO;

                manualVersioning = YES;

                noVersioning = NO;

             }

        }

        else if (indexPath.row == 2) {

            if (!noVersioning) {

                autoVersioning = NO;

                manualVersioning = NO;

                noVersioning = NO;

            }

        }

        [self.tableView reloadData];

    }

    else if (indexPath.section == kSavePolicy) {

        NSIndexPath *quotaCellIndexPath = [NSIndexPath indexPathForRow:0 inSection:kQuota];

        UITableViewCell *cell = [self.tableView cellForRowAtIndexPath:quotaCellIndexPath];

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

        self.container.quota = [textField.text integerValue];

        self.oldVersioning = container.versioning;

        if (autoVersioning)

            container.versioning = @"auto";

        else if (manualVersioning)

            container.versioning = @"manual";

        else if (noVersioning)

            container.versioning = @"none";

        NSString *activityMessage = @"Applying policy...";

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

        [activityIndicatorView addToView:self.view];

        [[self.account.manager writeContainerPolicy:container] 

         success:^(OpenStackRequest *request) {

             [self.tableView reloadData];

             if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad)

                 [self.containerDetailViewController.containersViewController refreshButtonPressed:nil];

             [activityIndicatorView removeFromSuperviewAndRelease];

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

         }

         failure:^(OpenStackRequest *request) {

             container.versioning = self.oldVersioning;

             container.quota = self.oldQuota;

             [self configVersioningVariables];

             [self.tableView reloadData];

             [activityIndicatorView removeFromSuperviewAndRelease];

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

             [self.tableView reloadData];

             [self alert:@"There was a problem applying the policy." request:request];

         }];        

    }

}

#pragma mark - Textfield delegate

- (void)textFieldDidEndEditing:(UITextField *)textField

{

    self.oldQuota = container.quota;

    NSNumberFormatter *numberFormatter = [[NSNumberFormatter alloc] init];

    [numberFormatter setAllowsFloats:NO];

    if (![numberFormatter numberFromString:textField.text]) {

        [self alert:@"Invalid quota value" message:@"Only integers are accepted as valid quota values"];

        textField.text = [NSString stringWithFormat:@"%d", self.oldQuota];

        [self.tableView reloadData];

    } 

    [numberFormatter release];

}

- (BOOL)textFieldShouldReturn:(UITextField *)textField

{

    [textField resignFirstResponder];

    return YES;

}

@end