eqn.ios/Sources/Earthquake Network/Controllers/EQNMainTabBarController.m

//
//  EQNMainTabBarController.m
//  Earthquake Network
//
//  Created by Busi Andrea on 13/08/2020.
//  Copyright © 2020 Earthquake Network. All rights reserved.
//

#import "EQNMainTabBarController.h"
#import "AppDelegate.h"
#import "EQNBaseViewController.h"
#import "EQNManager.h"
#import "ServerRequest.h"

@interface EQNMainTabBarController () <UITabBarControllerDelegate>
@property (nonatomic, strong) IBOutlet UIBarButtonItem *sidebarButton;
@property (nonatomic) NSInteger debugTapCounter;
@end

@implementation EQNMainTabBarController

#pragma mark - View Lifecycle

- (void)viewDidLoad
{
    [super viewDidLoad];
    
    self.delegate = self;
    [self localizeUI];
    
    AppDelegate *appDelegate = (AppDelegate *)[[UIApplication sharedApplication] delegate];
    appDelegate.mainTabBarController = self;
    
    [[NSNotificationCenter defaultCenter] addObserver:self
                                             selector:@selector(serverRegistrationFailedNotification:)
                                                 name:EQNServerRegistrationDidFailNotification
                                               object:nil];
    
    [self sincronizza];
    [self migrationV5_8];
}

#pragma mark - Private

- (void)localizeUI
{
    self.tabBar.items[EQNTabBarSectionAllerte].title = [NSLocalizedString(@"tab_network", comment: "") capitalizedString];
    self.tabBar.items[EQNTabBarSectionSegnalazioni].title = [NSLocalizedString(@"tab_manual", comment: "") capitalizedString];
    self.tabBar.items[EQNTabBarSectionRetiSismiche].title = [NSLocalizedString(@"tab_official", comment: "") capitalizedString];
    self.tabBar.items[EQNTabBarSectionImpostazioni].title = [NSLocalizedString(@"drawer_main_settings", comment: "") capitalizedString];
}

- (void)migrationV5_8
{
    // forziamo il salvataggio delle impostazioni di notifica, perchè i vari valori devono essere migrati
    BOOL alreadyMigrated =  [NSUserDefaults.standardUserDefaults boolForKey:NSUserDefaults.SaveSettingsNotificationMigrationV5_8];
    if (alreadyMigrated) {
        return;
    }
    
    NSLog(@"[MIGRATION] perform notification settings save");
    [SettingsBaseTableViewController saveSettingsWithCompletion:^(BOOL success) {
        if (success) {
            NSLog(@"[MIGRATION] settings saved");
            [NSUserDefaults.standardUserDefaults setBool:true forKey:NSUserDefaults.SaveSettingsNotificationMigrationV5_8];
        }
    }];
}

#pragma mark - Notification

- (void)serverRegistrationFailedNotification:(NSNotification *)notification
{
    dispatch_async(dispatch_get_main_queue(), ^{
        UIAlertController *alert = [UIAlertController alertControllerWithTitle:NSLocalizedString(@"attention", nil)
                                                                       message:NSLocalizedString(@"error_server_registration", nil)
                                                                preferredStyle:UIAlertControllerStyleAlert];
        [alert addAction:[UIAlertAction actionWithTitle:NSLocalizedString(@"retry", nil) style:UIAlertActionStyleDefault handler:^(UIAlertAction *action) {
            // retry server registration
            [[EQNUser defaultUser] retryUserRegistration];
        }]];
        [alert addAction:[UIAlertAction actionWithTitle:NSLocalizedString(@"status_cancel", nil) style:UIAlertActionStyleCancel handler:nil]];
        [self presentViewController:alert animated:YES completion:nil];
    });
}

#pragma mark - Public

- (void)sincronizza
{
    [[EQNManager defaultManager] sincronizza];
}

- (void)selectSection:(EQNTabBarSection)section
{
    NSInteger index = 0;
    switch (section) {
        case EQNTabBarSectionAllerte: index = 0; break;
        case EQNTabBarSectionSegnalazioni: index = 1; break;
        case EQNTabBarSectionRetiSismiche: index = 2; break;
        case EQNTabBarSectionImpostazioni: index = 3; break;
    }
    
    self.selectedIndex = index;
}

#pragma mark - Helpers

- (UIViewController *)getTopControllerFromController:(UIViewController *)viewController
{
    // check if the given controller is a UINavigationController
    // and, if yes, returns the top view controller
    UIViewController *topController = viewController;
    if ([viewController isKindOfClass:[UINavigationController class]]) {
        UINavigationController *navController = (UINavigationController *)viewController;
        topController = navController.viewControllers.firstObject;
    }
    
    return topController;
}

- (void)openDebugController
{
    EQNDebugViewController *controller = [[EQNDebugViewController alloc] init];
    UINavigationController *navController = [[UINavigationController alloc] initWithRootViewController:controller];
    [self presentViewController:navController animated:YES completion:nil];
}

#pragma mark - UITabBarControllerDelegate

- (BOOL)tabBarController:(UITabBarController *)tabBarController shouldSelectViewController:(UIViewController *)viewController
{
    // if user switch from settings page, we need to force a settings save
    UIViewController *controller = [self getTopControllerFromController:tabBarController.selectedViewController];
    if ([controller isKindOfClass:[SettingsViewController class]]) {
        [SettingsBaseTableViewController saveSettings];
    }
    
    return YES;
}

- (void)tabBarController:(UITabBarController *)tabBarController didSelectViewController:(UIViewController *)viewController
{
    UIViewController *controller = [self getTopControllerFromController:viewController];
    
    // force a UI refresh when tab is changed
    if ([controller isKindOfClass:[EQNBaseViewController class]]) {
        EQNBaseViewController *baseController = (EQNBaseViewController *)controller;
        [baseController refreshUI];
    }
    
    // tap 5 times on "Settings" to open debug view
    if ([controller isKindOfClass:[SettingsViewController class]] && EQNEnableDebugView) {
        self.debugTapCounter += 1;
        if (self.debugTapCounter == 5) {
            self.debugTapCounter = 0;
            [self openDebugController];
        }
    }
}

@end