session-ios/Signal/src/view controllers/PrivacySettingsTableViewController.m

//
//  PrivacySettingsTableViewController.m
//  Signal
//
//  Created by Dylan Bourgeois on 05/01/15.
//  Copyright (c) 2015 Open Whisper Systems. All rights reserved.
//

#import "PrivacySettingsTableViewController.h"

#import <25519/Curve25519.h>
#import "DJWActionSheet+OWS.h"
#import "Environment.h"
#import "PreferencesUtil.h"
#import "TSFingerprintGenerator.h"
#import "TSStorageManager+IdentityKeyStore.h"
#import "UIUtil.h"

@interface PrivacySettingsTableViewController ()

@property (nonatomic, strong) UITableViewCell * enableScreenSecurityCell;
@property (nonatomic, strong) UITableViewCell * clearHistoryLogCell;
@property (nonatomic, strong) UITableViewCell * fingerprintCell;
@property (nonatomic, strong) UITableViewCell * shareFingerprintCell;

@property (nonatomic, strong) UISwitch * enableScreenSecuritySwitch;

@property (nonatomic, strong) UILabel * fingerprintLabel;

@property (nonatomic, strong) NSTimer * copiedTimer;

@end

@implementation PrivacySettingsTableViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    [self.navigationController.navigationBar setTranslucent:NO];

    self.tableView.tableFooterView = [[UIView alloc]initWithFrame:CGRectZero];
}

-(instancetype)init
{
    return [super initWithStyle:UITableViewStyleGrouped];
}

-(void)loadView
{
    [super loadView];
    
    self.title = @"Privacy";
    
    //Enable Screen Security Cell
    self.enableScreenSecurityCell = [[UITableViewCell alloc]init];
    self.enableScreenSecurityCell.textLabel.text = @"Enable Screen Security";
    
    self.enableScreenSecuritySwitch = [[UISwitch alloc]initWithFrame:CGRectZero];
    
    self.enableScreenSecurityCell.accessoryView = self.enableScreenSecuritySwitch;
    self.enableScreenSecurityCell.userInteractionEnabled = YES;
    
    //Clear History Log Cell
    self.clearHistoryLogCell = [[UITableViewCell alloc]init];
    self.clearHistoryLogCell.textLabel.text = @"Clear History Logs";
    self.clearHistoryLogCell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
    
    //Fingerprint Cell
    self.fingerprintCell = [[UITableViewCell alloc]initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:@"Identifier"];
    self.fingerprintCell.textLabel.text = @"Fingerprint";
    self.fingerprintCell.detailTextLabel.text = @"Tap to copy";
    self.fingerprintCell.detailTextLabel.textColor = [UIColor lightGrayColor];
    
    self.fingerprintLabel = [[UILabel alloc]initWithFrame:CGRectMake(0, 0, 150, 25)];
    self.fingerprintLabel.textColor = [UIColor lightGrayColor];
    self.fingerprintLabel.font = [UIFont ows_regularFontWithSize:16.0f]; 
    self.fingerprintLabel.lineBreakMode = NSLineBreakByTruncatingMiddle;
    
    self.fingerprintCell.accessoryView = self.fingerprintLabel;
    
    [self setValues];
    [self subsribeToEvents];

}

-(void)subsribeToEvents
{
    [self.enableScreenSecuritySwitch addTarget:self action:@selector(didToggleSwitch:) forControlEvents:UIControlEventTouchUpInside];
}

-(void)setValues
{
    [self.enableScreenSecuritySwitch setOn:[Environment.preferences screenSecurityIsEnabled]];
    self.fingerprintLabel.text = [TSFingerprintGenerator getFingerprintForDisplay:[[TSStorageManager sharedManager]identityKeyPair].publicKey];
}

#pragma mark - Table view data source

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
    return 3;
}

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
    switch (section) {
        case 0: return 1;
        case 1: return 1;
        case 2: return 1;
        default: return 0;
    }
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
    
    switch (indexPath.section) {
        case 0: return self.enableScreenSecurityCell;
        case 1: return self.clearHistoryLogCell;
        case 2:
            switch (indexPath.row) {
                case 0: return self.fingerprintCell;
                case 1: return self.shareFingerprintCell;
            }
    }
    
    return nil;
}

- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section
{
    switch (section) {
        case 0: return @"Screen Security";
        case 1: return @"History Log";
        case 2: return @"Fingerprint";
        default: return nil;
    }
}

-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
    [tableView deselectRowAtIndexPath:indexPath animated:YES];

    switch (indexPath.section) {
        case 1:
        {
            [DJWActionSheet showInView:self.parentViewController.view
                             withTitle:@"Are you sure you want to delete all your history (messages, attachments, call history ...) ? This action cannot be reverted."
                     cancelButtonTitle:@"Cancel"
                destructiveButtonTitle:@"I'm sure."
                     otherButtonTitles:@[]
                              tapBlock:^(DJWActionSheet *actionSheet, NSInteger tappedButtonIndex) {
                                  [self.tableView deselectRowAtIndexPath:indexPath animated:YES];
                                  if (tappedButtonIndex == actionSheet.cancelButtonIndex) {
                                      NSLog(@"User Cancelled");
                                      
                                  } else if (tappedButtonIndex == actionSheet.destructiveButtonIndex){
                                      [[TSStorageManager sharedManager] deleteThreadsAndMessages];
                                  } else {
                                      NSLog(@"The user tapped button at index: %li", (long)tappedButtonIndex);
                                  }
                              }];

            break;
        }
        
        case 2:
            switch (indexPath.row) {
                case 0:
                {
                    //Timer to change label to copied (NSTextAttachment checkmark)
                    if (self.copiedTimer == nil) {
                        self.copiedTimer = [NSTimer scheduledTimerWithTimeInterval:2.0f target:self selector:@selector(endTimer:) userInfo:nil repeats:NO];
                        self.fingerprintCell.detailTextLabel.text = @"Copied !";
                    } else {
                        self.fingerprintCell.detailTextLabel.text = @"Tap to copy";
                    }
                    [[UIPasteboard generalPasteboard] setString:self.fingerprintLabel.text];
                    break;
                }
                    
                default:
                    break;
            }
            break;
        default:
            break;
    }
}

#pragma mark - Toggle

-(void)didToggleSwitch:(UISwitch*)sender
{
    [Environment.preferences setScreenSecurity:self.enableScreenSecuritySwitch.isOn];
}
                                    
#pragma mark - Timer

-(void)endTimer:(id)sender
{
    self.fingerprintCell.detailTextLabel.text = @"Tap to copy";
    [self.copiedTimer invalidate];
    self.copiedTimer = nil;
}

@end