@Module
class NetworkModule @Inject constructor(private val pref: IPreference) {

    @Singleton
    @Provides
    fun provideInterceptor(): Interceptor? = if (BuildConfig.DEBUG)
        HttpLoggingInterceptor().setLevel(HttpLoggingInterceptor.Level.BODY) else null

    @Provides
    @Singleton
    fun provideOkHttpClient(interceptor: Interceptor): OkHttpClient {
        val head = Interceptor { chain ->
            val original = chain.request()
            if (Storage.key.isEmpty()) {
                val request = original.newBuilder()
                        .header("company", pref.getCompany())
                        .header("Device", pref.getDeviceToken())
                        .method(original.method(), original.body())
                        .build()
                chain.proceed(request)

            } else {
                val request = original.newBuilder()
                        .header("company", pref.getCompany())
                        .header("Authorization", "Token ${Storage.key}")
                        .header("Device", pref.getDeviceToken())
                        .method(original.method(), original.body())
                        .build()
                chain.proceed(request)
            }
        }

        return OkHttpClient.Builder()
                .addInterceptor(head)
                .addInterceptor(interceptor)
                .readTimeout(60, TimeUnit.SECONDS)
                .connectTimeout(10, TimeUnit.SECONDS)
                .build()
    }

    @Singleton
    @Provides
    fun provideGson(): Gson = GsonBuilder().setLenient().create()

    @Singleton
    @Provides
    fun provideRetrofit(okHttpClient: OkHttpClient, gson: Gson): Retrofit {
        return Retrofit.Builder()
                .baseUrl(pref.getBaseUrl())
                .client(okHttpClient)
                .addConverterFactory(GsonConverterFactory.create(gson))
                .addCallAdapterFactory(RxJava2CallAdapterFactory.create())
                .build()
    }

    @Singleton
    @Provides
    fun provideNetApi(retrofit: Retrofit): QaKioskAPI = retrofit.create(QaKioskAPI::class.java)

}