#import <Foundation/Foundation.h>
#import "BITTelemetryContext.h"

#if HOCKEYSDK_FEATURE_METRICS

#import "BITMetricsManagerPrivate.h"
#import "BITHockeyHelper.h"
#import "BITPersistence.h"
#import "BITPersistencePrivate.h"

static NSString *const kBITUserMetaData = @"BITUserMetaData";

static char *const BITContextOperationsQueue = "net.hockeyapp.telemetryContextQueue";

@implementation BITTelemetryContext

@synthesize appIdentifier = _appIdentifier;
@synthesize persistence = _persistence;

#pragma mark - Initialisation

-(instancetype)init {
  
  if((self = [super init])) {
    _operationsQueue = dispatch_queue_create(BITContextOperationsQueue, DISPATCH_QUEUE_CONCURRENT);
  }
  return self;
}
      
- (instancetype)initWithAppIdentifier:(NSString *)appIdentifier persistence:(BITPersistence *)persistence {
  
  if ((self = [self init])) {
    _persistence = persistence;
    _appIdentifier = appIdentifier;
    BITDevice *deviceContext = [BITDevice new];
    deviceContext.model = bit_devicePlatform();
    deviceContext.type = bit_deviceType();
    deviceContext.osVersion = bit_osVersionBuild();
    deviceContext.os = bit_osName();
    deviceContext.deviceId = bit_appAnonID(NO);
    deviceContext.locale = bit_deviceLocale();
    deviceContext.language = bit_deviceLanguage();
    deviceContext.screenResolution = bit_screenSize();
    deviceContext.oemName = @"Apple";
    
    BITInternal *internalContext = [BITInternal new];
    internalContext.sdkVersion = bit_sdkVersion();
    
    BITApplication *applicationContext = [BITApplication new];
    applicationContext.version = bit_appVersion();
    
    BITUser *userContext = [self loadUser];
    if (!userContext) {
      userContext = [self newUser];
      [self saveUser:userContext];
    }

    BITSession *sessionContext = [BITSession new];
    
    _application = applicationContext;
    _device = deviceContext;
    _user = userContext;
    _internal = internalContext;
    _session = sessionContext;
    _tags = [self tags];
  }
  return self;
}

- (void)dealloc {
  [[NSNotificationCenter defaultCenter] removeObserver:self];
}

#pragma mark - User

- (BITUser *)newUser {
  return ({
    BITUser *user = [BITUser new];
    user.userId = bit_appAnonID(NO);
    user;
  });
}

- (void)saveUser:(BITUser *)user{
  NSDictionary *userMetaData = @{kBITUserMetaData : user};
  [self.persistence persistMetaData:userMetaData];
}

- (nullable BITUser *)loadUser{
  NSDictionary *metaData =[self.persistence metaData];
  BITUser *user = [metaData objectForKey:kBITUserMetaData];
  return user;
}

#pragma mark - Network

#pragma mark - Getter/Setter properties

- (NSString *)appIdentifier {
  __block NSString *tmp;
  dispatch_sync(self.operationsQueue, ^{
    tmp = self->_appIdentifier;
  });
  return tmp;
}

- (void)setAppIdentifier:(NSString *)appIdentifier {
  NSString* tmp = [appIdentifier copy];
  dispatch_barrier_async(self.operationsQueue, ^{
    self->_appIdentifier = tmp;
  });
}

- (NSString *)screenResolution {
  __block NSString *tmp;
  dispatch_sync(self.operationsQueue, ^{
    tmp = self.device.screenResolution;
  });
  return tmp;
}

- (void)setScreenResolution:(NSString *)screenResolution {
  NSString* tmp = [screenResolution copy];
  dispatch_barrier_async(self.operationsQueue, ^{
    self.device.screenResolution = tmp;
  });
}

- (NSString *)appVersion {
  __block NSString *tmp;
  dispatch_sync(self.operationsQueue, ^{
    tmp = self.application.version;
  });
  return tmp;
}

- (void)setAppVersion:(NSString *)appVersion {
  NSString* tmp = [appVersion copy];
  dispatch_barrier_async(self.operationsQueue, ^{
    self.application.version = tmp;
  });
}

- (NSString *)anonymousUserId {
  __block NSString *tmp;
  dispatch_sync(self.operationsQueue, ^{
    tmp = self.user.userId;
  });
  return tmp;
}

- (void)setAnonymousUserId:(NSString *)userId {
  NSString* tmp = [userId copy];
  dispatch_barrier_async(self.operationsQueue, ^{
    self.user.userId = tmp;
  });
}

- (NSString *)anonymousUserAquisitionDate {
  __block NSString *tmp;
  dispatch_sync(self.operationsQueue, ^{
    tmp = self.user.anonUserAcquisitionDate;
  });
  return tmp;
}

- (void)setAnonymousUserAquisitionDate:(NSString *)anonymousUserAquisitionDate {
  NSString* tmp = [anonymousUserAquisitionDate copy];
  dispatch_barrier_async(self.operationsQueue, ^{
    self.user.anonUserAcquisitionDate = tmp;
  });
}

- (NSString *)sdkVersion {
  __block NSString *tmp;
  dispatch_sync(self.operationsQueue, ^{
    tmp = self.internal.sdkVersion;
  });
  return tmp;
}

- (void)setSdkVersion:(NSString *)sdkVersion {
  NSString* tmp = [sdkVersion copy];
  dispatch_barrier_async(self.operationsQueue, ^{
    self.internal.sdkVersion = tmp;
  });
}

- (NSString *)sessionId {
  __block NSString *tmp;
  dispatch_sync(self.operationsQueue, ^{
    tmp = self.session.sessionId;
  });
  return tmp;
}

- (void)setSessionId:(NSString *)sessionId {
  NSString* tmp = [sessionId copy];
  dispatch_barrier_async(self.operationsQueue, ^{
    self.session.sessionId = tmp;
  });
}

- (NSString *)isFirstSession {
  __block NSString *tmp;
  dispatch_sync(self.operationsQueue, ^{
    tmp = self.session.isFirst;
  });
  return tmp;
}

- (void)setIsFirstSession:(NSString *)isFirstSession {
  NSString* tmp = [isFirstSession copy];
  dispatch_barrier_async(self.operationsQueue, ^{
    self.session.isFirst = tmp;
  });
}

- (NSString *)isNewSession {
  __block NSString *tmp;
  dispatch_sync(self.operationsQueue, ^{
    tmp = self.session.isNew;
  });
  return tmp;
}

- (void)setIsNewSession:(NSString *)isNewSession {
  NSString* tmp = [isNewSession copy];
  dispatch_barrier_async(self.operationsQueue, ^{
    self.session.isNew = tmp;
  });
}

- (NSString *)osVersion {
  __block NSString *tmp;
  dispatch_sync(self.operationsQueue, ^{
    tmp = self.device.osVersion;
  });
  return tmp;
}

- (void)setOsVersion:(NSString *)osVersion {
  NSString* tmp = [osVersion copy];
  dispatch_barrier_async(self.operationsQueue, ^{
    self.device.osVersion = tmp;
  });
}

- (NSString *)osName {
  __block NSString *tmp;
  dispatch_sync(self.operationsQueue, ^{
    tmp = self.device.os;
  });
  return tmp;
}

- (void)setOsName:(NSString *)osName {
  NSString* tmp = [osName copy];
  dispatch_barrier_async(self.operationsQueue, ^{
    self.device.os = tmp;
  });
}

- (NSString *)deviceModel {
  __block NSString *tmp;
  dispatch_sync(self.operationsQueue, ^{
    tmp = self.device.model;
  });
  return tmp;
}

- (void)setDeviceModel:(NSString *)deviceModel {
  NSString* tmp = [deviceModel copy];
  dispatch_barrier_async(self.operationsQueue, ^{
    self.device.model = tmp;
  });
}

- (NSString *)deviceOemName {
  __block NSString *tmp;
  dispatch_sync(self.operationsQueue, ^{
    tmp = self.device.oemName;
  });
  return tmp;
}

- (void)setDeviceOemName:(NSString *)oemName {
  NSString* tmp = [oemName copy];
  dispatch_barrier_async(self.operationsQueue, ^{
    self.device.oemName = tmp;
  });
}

- (NSString *)osLocale {
  __block NSString *tmp;
  dispatch_sync(self.operationsQueue, ^{
    tmp = self.device.locale;
  });
  return tmp;
}

- (void)setOsLocale:(NSString *)osLocale {
  NSString* tmp = [osLocale copy];
  dispatch_barrier_async(self.operationsQueue, ^{
    self.device.locale = tmp;
  });
}

- (NSString *)osLanguage {
  __block NSString *tmp;
  dispatch_sync(self.operationsQueue, ^{
    tmp = self.device.language;
  });
  return tmp;
}

- (void)setOsLanguage:(NSString *)osLanguage {
  NSString* tmp = [osLanguage copy];
  dispatch_barrier_async(self.operationsQueue, ^{
    self.device.language = tmp;
  });
}

- (NSString *)deviceId {
  __block NSString *tmp;
  dispatch_sync(self.operationsQueue, ^{
    tmp = self.device.deviceId;
  });
  return tmp;
}

- (void)setDeviceId:(NSString *)deviceId {
  NSString* tmp = [deviceId copy];
  dispatch_barrier_async(self.operationsQueue, ^{
    self.device.deviceId = tmp;
  });
}

- (NSString *)deviceType {
  __block NSString *tmp;
  dispatch_sync(self.operationsQueue, ^{
    tmp = self.device.type;
  });
  return tmp;
}

- (void)setDeviceType:(NSString *)deviceType {
  NSString* tmp = [deviceType copy];
  dispatch_barrier_async(self.operationsQueue, ^{
    self.device.type = tmp;
  });
}

#pragma mark - Custom getter
#pragma mark - Helper

- (NSDictionary *)contextDictionary {
  __block NSMutableDictionary *tmp = [NSMutableDictionary new];
  dispatch_sync(self.operationsQueue, ^{
    [tmp addEntriesFromDictionary:self.tags];
    [tmp addEntriesFromDictionary:[self.session serializeToDictionary]];
    [tmp addEntriesFromDictionary:[self.user serializeToDictionary]];
  });
  return tmp;
}

- (NSDictionary *)tags {
  if(!_tags){
    NSMutableDictionary *tags = [self.application serializeToDictionary].mutableCopy;
    [tags addEntriesFromDictionary:[self.application serializeToDictionary]];
    [tags addEntriesFromDictionary:[self.internal serializeToDictionary]];
    [tags addEntriesFromDictionary:[self.device serializeToDictionary]];
    _tags = tags;
  }
  return _tags;
}

@end

#endif /* HOCKEYSDK_FEATURE_METRICS */