Initial commit

- Retrofit used to call API

src/main/kotlin/api/BookerApi.kt

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+package api
+
+import okhttp3.OkHttpClient
+import java.util.concurrent.TimeUnit
+import okhttp3.logging.HttpLoggingInterceptor
+import retrofit2.Retrofit
+import retrofit2.converter.gson.GsonConverterFactory
+
+class BookerApi {
+    private val baseUrl = "https://restful-booker.herokuapp.com/"
+
+    private val loggingInterceptor = HttpLoggingInterceptor().apply {
+        level = HttpLoggingInterceptor.Level.BODY
+    }
+
+    private fun buildOkHttpClient(timeoutSeconds: Long = 30L): OkHttpClient {
+        val builder = OkHttpClient.Builder()
+
+        builder
+            .addInterceptor(loggingInterceptor)
+            .connectTimeout(timeoutSeconds, TimeUnit.SECONDS)
+            .writeTimeout(timeoutSeconds, TimeUnit.SECONDS)
+            .readTimeout(timeoutSeconds, TimeUnit.SECONDS)
+
+        return builder.build()
+    }
+
+    fun invoke(): RestfulBookerApi {
+        val okHttpClient = buildOkHttpClient()
+        return Retrofit.Builder()
+            .client(okHttpClient)
+            .baseUrl(baseUrl)
+            .addConverterFactory(GsonConverterFactory.create())
+            .build()
+            .create(RestfulBookerApi::class.java)
+    }
+}

src/main/kotlin/api/RestfulBookerApi.kt

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+package api
+
+import model.*
+import retrofit2.Response
+import retrofit2.http.*
+
+interface RestfulBookerApi {
+
+    @Headers("Content-Type:application/json")
+    @POST("auth")
+    suspend fun createAuthToken(
+        @Field("username") username: String,
+        @Field("password") password: String,
+    ): Response<AuthResponse>
+
+    @GET("booking")
+    suspend fun getBookingIds(
+        @Field("firstname") firstname: String? = null,
+        @Field("lastname") lastname: String? = null,
+        @Field("checkin") checkin: String? = null,
+        @Field("checkout") checkout: String? = null,
+    ): Response<List<BookingIdResponse>>
+
+    @GET("booking/{id}")
+    suspend fun getSingleBooking(
+        @Path("id") id: String
+    ): Response<BookingResponse>
+
+    @Headers("Content-Type:application/json")
+    @POST("booking")
+    suspend fun createBooking(
+        @Body booking: BookingRequest,
+    ): Response<CreateBookingResponse>
+
+    @Headers("Content-Type:application/json", "Accept: application/json")
+    @PUT("booking/{id}")
+    suspend fun updateBooking(
+        @Path("id") id: String,
+        @Body booking: BookingRequest,
+        @Header("Authorization") token: String
+    ): Response<BookingResponse>
+
+    @Headers("Content-Type:application/json", "Accept: application/json")
+    @PATCH("booking/{id}")
+    suspend fun partialUpdateBooking(
+        @Path("id") id: String,
+        @Header("Authorization") token: String,
+        @Field("firstname") firstname: String? = null,
+        @Field("lastname") lastname: String? = null,
+        @Field("totalprice") totalprice: Float? = null,
+        @Field("depositpaid") depositpaid: Boolean? = null,
+        @Field("checkin") checkin: String? = null,
+        @Field("checkout") checkout: String? = null,
+        @Field("additionalneeds") additionalneeds: String? = null
+    ): Response<BookingResponse>
+
+    @DELETE("booking/{id}")
+    suspend fun deleteBooking(
+        @Path("id") id: String
+    ): Response<Any>
+}

src/main/kotlin/model/AuthResponse.kt

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+package model
+
+class AuthResponse {
+    var token: String? = null
+}

src/main/kotlin/model/BookingIdResponse.kt

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+package model
+
+class BookingIdResponse {
+    var bookingid = 0
+}

src/main/kotlin/model/BookingRequest.kt

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+package model
+
+data class BookingRequest (
+    var firstname: String? = null,
+    var lastname: String? = null,
+    var totalprice: Int = 0,
+    var depositpaid: Boolean = false,
+    var bookingdates: Bookingdates? = null,
+    var additionalneeds: String? = null,
+)
+
+

src/main/kotlin/model/BookingResponse.kt

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+package model
+
+
+data class BookingResponse (
+    var firstname: String? = null,
+    var lastname: String? = null,
+    var totalprice: Int = 0,
+    var depositpaid: Boolean = false,
+    var bookingdates: Bookingdates? = null,
+    var additionalneeds: String? = null
+)

src/main/kotlin/model/Bookingdates.kt

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+package model
+
+data class Bookingdates (
+    var checkin: String? = null,
+    var checkout: String? = null,
+)

src/main/kotlin/model/CreateBookingResponse.kt

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+package model
+
+class CreateBookingResponse {
+    var bookingid = 0
+    var booking: BookingResponse? = null
+}