SlingSDK.kt

package stone.com.br.slingkotlinsdk.builderpattern

/**
 * Created by diegolucasb on 09/07/18.
 * Copyright (c) Stone Co. All rights reserved.
 * lucas.amaral@stone.com.br
 */
class SlingSDK(
        url: String,
        headers: Map<String, String>? = null,
        authenticationToken: String? = null) {

    private constructor(builder: Builder): this(builder.url, builder.headers, builder.authenticationToken)

    companion object {
        inline fun build(block: Builder.() -> Unit) = Builder().apply(block).build()
    }

    lateinit var merchant: MerchantService
        private set

    class Builder {
        var url: String = "" //BuildConfig.DEFAULT_URL
        var headers: Map<String, String>? = null
        var authenticationToken: String? = null

        fun build() = SlingSDK(this).apply {
            //injectors
            merchant = Merchant(Contact())
        }
    }

    class Merchant(
            val contact: Contact,
            override var url: String = ""): MerchantService()

    class Contact: ContactsService {
        override fun list() {
        }

        override fun saveOrUpdate() {
        }

        override fun delete() {
        }
    }


    abstract class MerchantService: Connection()

    interface ContactsService: BaseService

    interface BaseService {
        fun list()
        fun saveOrUpdate()
        fun delete()
    }

    abstract class Connection {
        abstract var url: String
    }

}