api-ios/api/MapsWithMeAPI.m at 7b95e1e24c1a9ed4b547788b3dcfd2cce36acace · organicmaps/api-ios · GitHub

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/*******************************************************************************

 Copyright (c) 2014, MapsWithMe GmbH
 All rights reserved.

 Redistribution and use in source and binary forms, with or without
 modification, are permitted provided that the following conditions are met:

 * Redistributions of source code must retain the above copyright notice, this
 list of conditions and the following disclaimer.

 * 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 THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 THE COPYRIGHT HOLDER 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.

 ******************************************************************************/

#import "MapsWithMeAPI.h"

#define MAPSWITHME_API_VERSION 1.1

static NSString * const kMWMUrlScheme = @"mapswithme://";
static BOOL kOpenUrlOnBalloonClick = NO;

@implementation MWMPin

- (nullable instancetype)init
{
  self = [super init];
  if (self)
  {
    _lat = INFINITY;
    _lon = INFINITY;
  }
  return self;
}

- (nullable instancetype)initWithLat:(double)lat
                                 lon:(double)lon
                               title:(nullable NSString *)title
                             idOrUrl:(nullable NSString *)idOrUrl
{
  self = [super init];
  if (self)
  {
    _lat = lat;
    _lon = lon;
    _title = title;
    _idOrUrl = idOrUrl;
  }
  return self;
}

@end

// Utility class to automatically handle "MapsWithMe is not installed" situations
@interface MWMNViewController : UIViewController <UIWebViewDelegate>

@end

@implementation MWMNViewController

// HTML page for users who didn't install MapsWithMe
static NSString * const mapsWithMeIsNotInstalledPage =
@"<html>" \
"<head>" \
"<title>Please install MAPS.ME - offline maps of the World</title>" \
"<meta name='viewport' content='width=device-width, initial-scale=1.0'/>" \
"<meta charset='UTF-8'/>" \
"<style type='text/css'>" \
"body { font-family: Roboto,Helvetica; background-color:#fafafa; text-align: center;}" \
".description { text-align: center; font-size: 0.85em; margin-bottom: 1em; }" \
".button { -moz-border-radius: 20px; -webkit-border-radius: 20px; -khtml-border-radius: 20px; border-radius: 20px; padding: 10px; text-decoration: none; display:inline-block; margin: 0.5em; }" \
".shadow { -moz-box-shadow: 3px 3px 5px 0 #444; -webkit-box-shadow: 3px 3px 5px 0 #444; box-shadow: 3px 3px 5px 0 #444; }" \
".pro  { color: white; background-color: green; }" \
".mwm { color: green; text-decoration: none; }" \
"</style>" \
"</head>" \
"<body>" \
"<div class='description'>Offline maps are required to proceed. We have partnered with <a href='http://maps.me' target='_blank' class='mwm'>MAPS.ME</a> to provide you with offline maps of the entire world.</div>" \
"<div class='description'>To continue please download the app:</div>" \
"<a href='http://mapswith.me/get?api' class='pro button shadow'>Download&nbsp;MAPS.ME</a>" \
"</body>" \
"</html>";

- (void)webView:(UIWebView *)webView didFailLoadWithError:(NSError *)error
{
  [(UIWebView *)self.view loadHTMLString:mapsWithMeIsNotInstalledPage baseURL:[NSURL URLWithString:@"http://maps.me/"]];
}

- (void)onCloseButtonClicked:(id)sender
{
  [self dismissViewControllerAnimated:YES completion:nil];
}

@end


@implementation MWMApi

+ (NSString *)urlEncode:(NSString *)str
{
  return (__bridge_transfer NSString *)CFURLCreateStringByAddingPercentEscapes(kCFAllocatorDefault, (CFStringRef)str, NULL, CFSTR("!$&'()*+,-./:;=?@_~"), kCFStringEncodingUTF8);
}

+ (BOOL)isMapsWithMeUrl:(nonnull NSURL *)url
{
  NSString * appScheme = [MWMApi detectBackUrlScheme];
  return appScheme && [url.scheme isEqualToString:appScheme];
}

+ (nullable MWMPin *)pinFromUrl:(nonnull NSURL *)url
{
  if (![MWMApi isMapsWithMeUrl:url])
    return nil;

  MWMPin * pin = nil;
  if ([url.host isEqualToString:@"pin"])
  {
    pin = [[MWMPin alloc] init];
    for (NSString * param in [url.query componentsSeparatedByString:@"&"])
    {
      NSArray<NSString *> * values = [param componentsSeparatedByString:@"="];
      if ([values count] == 2)
      {
        NSString * key = values[0];
        if ([key isEqualToString:@"ll"])
        {
          NSArray<NSString *> * coords = [values[1] componentsSeparatedByString:@","];
          if ([coords count] == 2)
          {
            pin.lat = [[NSDecimalNumber decimalNumberWithString:coords[0]] doubleValue];
            pin.lon = [[NSDecimalNumber decimalNumberWithString:coords[1]] doubleValue];
          }
        }
        else if ([key isEqualToString:@"n"])
          pin.title = [values[1] stringByReplacingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
        else if ([key isEqualToString:@"id"])
          pin.idOrUrl = [values[1] stringByReplacingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
        else
          NSLog(@"Unsupported url parameters: %@", values);
      }
    }
    // do not accept invalid coordinates
    if (pin.lat > 90. || pin.lat < -90. || pin.lon > 180. || pin.lon < -180.)
      pin = nil;
  }
  return pin;
}

+ (BOOL)isApiSupported
{
  return [[UIApplication sharedApplication] canOpenURL:[NSURL URLWithString:kMWMUrlScheme]];
}

+ (BOOL)showMap
{
  return [[UIApplication sharedApplication] openURL:[NSURL URLWithString:[kMWMUrlScheme stringByAppendingFormat:@"map?v=%f", MAPSWITHME_API_VERSION]]];
}

+ (BOOL)showLat:(double)lat lon:(double)lon title:(nullable NSString *)title idOrUrl:(nullable NSString *)idOrUrl
{
  MWMPin * pin = [[MWMPin alloc] initWithLat:lat lon:lon title:title idOrUrl:idOrUrl];
  return [MWMApi showPin:pin];
}

+ (BOOL)showPin:(nullable MWMPin *)pin
{
  return pin ? [MWMApi showPins:@[pin]] : NO;
}

+ (BOOL)showPins:(nonnull NSArray<MWMPin *> *)pins
{
  // Automatic check that MapsWithMe is installed
  if (![MWMApi isApiSupported])
  {
    // Display dialog with link to the app
    [MWMApi showMapsWithMeIsNotInstalledDialog];
    return NO;
  }

  NSString * appName = [[NSBundle mainBundle] objectForInfoDictionaryKey:@"CFBundleDisplayName"];
  NSMutableString * str = [NSMutableString stringWithFormat:@"%@map?v=%f&appname=%@&",
                                                                   kMWMUrlScheme,
                                                                   MAPSWITHME_API_VERSION,
                                                                   [self urlEncode:appName]];

  NSString * backUrlScheme = [MWMApi detectBackUrlScheme];

  if (backUrlScheme)
    [str appendFormat:@"backurl=%@&", [self urlEncode:backUrlScheme]];

  for (MWMPin * point in pins)
  {
    [str appendFormat:@"ll=%f,%f&", point.lat, point.lon];
    @autoreleasepool
    {
      if (point.title)
        [str appendFormat:@"n=%@&", [self urlEncode:point.title]];
      if (point.idOrUrl)
        [str appendFormat:@"id=%@&", [self urlEncode:point.idOrUrl]];
    }
  }

  if (kOpenUrlOnBalloonClick)
    [str appendString:@"&balloonAction=kOpenUrlOnBalloonClick"];

  NSURL * url = [NSURL URLWithString:str];
  BOOL const result = [[UIApplication sharedApplication] openURL:url];
  return result;
}

+ (NSString *)detectBackUrlScheme
{
  for (NSDictionary * dict in [[NSBundle mainBundle] objectForInfoDictionaryKey:@"CFBundleURLTypes"])
  {
    if ([dict[@"CFBundleURLName"] rangeOfString:@"mapswithme" options:NSCaseInsensitiveSearch].location != NSNotFound)
    {
      for (NSString * scheme in dict[@"CFBundleURLSchemes"])
      {
        // We use the first scheme in this list, you can change this behavior if needed
        return scheme;
      }
    }
  }
  NSLog(@"WARNING: No com.mapswithme.maps url schemes are added in the Info.plist file. Please add them if you want API users to come back to your app.");
  return nil;
}

+ (void)showMapsWithMeIsNotInstalledDialog
{
  UIWebView * webView = [[UIWebView alloc] initWithFrame:[UIScreen mainScreen].applicationFrame];
  // check that we have Internet connection and display fresh online page if possible
  [webView loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:@"http://maps.me/api_mwm_not_installed"]]];
  MWMNViewController * webController = [[MWMNViewController alloc] init];
  webView.delegate = webController;
  webController.view = webView;
  webController.title = @"Install MAPS.ME";
  UINavigationController * navController = [[UINavigationController alloc] initWithRootViewController:webController];
  navController.navigationBar.topItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithTitle:@"Close" style:UIBarButtonItemStyleDone target:webController action:@selector(onCloseButtonClicked:)];

  UIWindow * window = [[UIApplication sharedApplication].windows firstObject];
  [window.rootViewController presentViewController:navController animated:YES completion:nil];
}

+ (void)setOpenUrlOnBalloonClick:(BOOL)value
{
  kOpenUrlOnBalloonClick = value;
}

@end