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      1 /*
      2  * Copyright (C) 2016 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 #import "MenuController.h"
     18 
     19 #import "UIAlertView+Extensions.h"
     20 #import "WALTLogger.h"
     21 #import "WALTAppDelegate.h"
     22 #import "WALTClient.h"
     23 
     24 @implementation MenuController {
     25   WALTClient *_client;
     26   UIActivityIndicatorView *_spinner;
     27 }
     28 
     29 - (void)viewDidLoad {
     30   [super viewDidLoad];
     31 
     32   _spinner =
     33       [[UIActivityIndicatorView alloc]
     34         initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleGray];
     35 
     36   _client = ((WALTAppDelegate *)[UIApplication sharedApplication].delegate).client;
     37 }
     38 
     39 - (void)viewDidAppear:(BOOL)animated {
     40   [super viewDidAppear:animated];
     41 
     42   [_client addObserver:self
     43             forKeyPath:@"connected"
     44                options:NSKeyValueObservingOptionInitial
     45                context:NULL];
     46 }
     47 
     48 - (void)dealloc {
     49   [_client removeObserver:self forKeyPath:@"connected"];
     50 }
     51 
     52 - (void)observeValueForKeyPath:(NSString *)keyPath
     53                       ofObject:(id)object
     54                         change:(NSDictionary *)change
     55                        context:(void *)context {
     56   if (_client.isConnected) {
     57     [_spinner stopAnimating];
     58     self.syncCell.accessoryView = nil;  // Display a checkmark.
     59     [[WALTLogger sessionLogger] appendString:@"WALT\tCONNECTED\n"];
     60     [[WALTLogger sessionLogger] appendFormat:@"SYNC\t%lld\t%lld\n",
     61         _client.minError, _client.maxError];
     62   } else {
     63     self.syncCell.accessoryView = _spinner;
     64     [_spinner startAnimating];
     65     [[WALTLogger sessionLogger] appendString:@"WALT\tDISCONNECTED\n"];
     66 
     67     // Return to this view controller.
     68     UINavigationController *navigationController = self.navigationController;
     69     if (navigationController.visibleViewController != self) {
     70       [navigationController popToRootViewControllerAnimated:YES];
     71 
     72       UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"WALT Connection Error"
     73                                                       message:@"WALT disconnected."
     74                                                      delegate:nil
     75                                             cancelButtonTitle:@"Dismiss"
     76                                             otherButtonTitles:nil];
     77       [alert show];
     78     }
     79   }
     80 
     81   [self.tableView reloadData];  // Update accessory types.
     82 }
     83 
     84 - (void)shareLog:(id)sender {
     85   NSFileManager *fileManager = [NSFileManager defaultManager];
     86   NSArray *urls = [fileManager URLsForDirectory:NSDocumentDirectory inDomains:NSUserDomainMask];
     87 
     88   if (urls.count > 0) {
     89     NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
     90     formatter.dateFormat = @"yyyy-MM-dd'T'HH-mm-ss";
     91 
     92     // Save the log to a file (which also allows it to be retrieved in iTunes/Xcode).
     93     NSString *logName = [NSString stringWithFormat:@"walt_%@.log",
     94                             [formatter stringFromDate:[NSDate date]]];
     95     NSURL *logURL = [urls.firstObject URLByAppendingPathComponent:logName];
     96 
     97     WALTLogger *logger = [WALTLogger sessionLogger];
     98     NSError *error = nil;
     99     if ([logger writeToURL:logURL error:&error]) {
    100       // Open a share sheet for the URL.
    101       UIActivityViewController *activityController =
    102           [[UIActivityViewController alloc] initWithActivityItems:@[logURL]
    103                                             applicationActivities:nil];
    104       [self presentViewController:activityController animated:YES completion:NULL];
    105     } else {
    106       UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Log Write Error"
    107                                                         error:error];
    108       [alert show];
    109     }
    110   } else {
    111     UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Log Write Error"
    112                                                     message:@"Could not locate document directory."
    113                                                    delegate:nil
    114                                           cancelButtonTitle:@"Dismiss"
    115                                           otherButtonTitles:nil];
    116     [alert show];
    117   }
    118 }
    119 
    120 #pragma mark - UITableView Delegate
    121 
    122 - (void)tableView:(UITableView *)tableView
    123   willDisplayCell:(UITableViewCell *)cell
    124 forRowAtIndexPath:(NSIndexPath *)indexPath {
    125   if (indexPath.section == 1) {
    126     // Show/hide the disclosure indicator on the "Measure Latency" cells.
    127     cell.accessoryType = (_client.isConnected ?
    128                           UITableViewCellAccessoryDisclosureIndicator :
    129                           UITableViewCellAccessoryNone);
    130   }
    131 }
    132 
    133 - (NSIndexPath *)tableView:(UITableView *)tableView
    134   willSelectRowAtIndexPath:(NSIndexPath *)indexPath {
    135   if (indexPath.section == 0 && indexPath.row == 0) {
    136     // "Clock Sync"
    137     NSError *error = nil;
    138     if (![_client checkConnectionWithError:&error] ||
    139         ![_client syncClocksWithError:&error]) {
    140       UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"WALT Connection Error"
    141                                                         error:error];
    142       [alert show];
    143     }
    144     [[WALTLogger sessionLogger] appendFormat:@"SYNC\t%lld\t%lld\n",
    145         _client.minError, _client.maxError];
    146     return nil;
    147   } else if (indexPath.section == 1 && !_client.isConnected) {
    148     // "Measure Latency"
    149     return nil;
    150   }
    151 
    152   return indexPath;
    153 }
    154 @end
    155