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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 "SettingsController.h"
18
19#import "UIAlertView+Extensions.h"
20#import "WALTAppDelegate.h"
21#import "WALTClient.h"
22
23@implementation SettingsController {
24  WALTClient *_client;
25  NSString *_status;
26}
27
28- (void)viewDidLoad {
29  [super viewDidLoad];
30
31  _client = ((WALTAppDelegate *)[UIApplication sharedApplication].delegate).client;
32}
33
34- (void)viewWillAppear:(BOOL)animated {
35  [super viewWillAppear:animated];
36
37  _status = [NSString string];
38  [self.tableView reloadData];
39}
40
41- (IBAction)ping:(id)sender {
42  NSTimeInterval start = _client.currentTime;
43  NSError *error = nil;
44  if (![_client sendCommand:WALTPingCommand error:&error]) {
45    UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"WALT Connection Error" error:error];
46    [alert show];
47  } else {
48    NSData *response = [_client readResponseWithTimeout:kWALTReadTimeout];
49    if (!response) {
50      _status = @"Timed out waiting for ping response.";
51    } else {
52      NSTimeInterval delta = _client.currentTime - start;
53      _status = [NSString stringWithFormat:@"Ping response in %.2f ms.", delta * 1000];
54    }
55  }
56  [self.tableView reloadData];
57}
58
59- (IBAction)checkDrift:(id)sender {
60  NSError *error = nil;
61  if (![_client updateSyncBoundsWithError:&error]) {
62    UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"WALT Connection Error" error:error];
63    [alert show];
64  } else {
65    _status = [NSString stringWithFormat:@"Remote clock delayed between %lld and %lld µs.",
66                  _client.minError, _client.maxError];
67  }
68  [self.tableView reloadData];
69}
70
71- (NSIndexPath *)tableView:(UITableView *)tableView
72  willSelectRowAtIndexPath:(NSIndexPath *)indexPath {
73  if (indexPath.section == 0 && indexPath.row == 0) {
74    // "Ping"
75    [self ping:tableView];
76    return nil;
77  } else if (indexPath.section == 0 && indexPath.row == 1) {
78    // "Check Drift"
79    [self checkDrift:tableView];
80    return nil;
81  }
82  return indexPath;
83}
84
85- (NSString *)tableView:(UITableView *)tableView titleForFooterInSection:(NSInteger)section {
86  return (section == 0 ? _status : nil);
87}
88@end
89