How to change retrofit #GET programatically - retrofit2

Question

I have a app where I use youtube api and make a get request using retrofit, now I want to get a list of videos for a specific keyword, but for that I have to use a different get req everytime so how can I change the get request programatically
Code for calling API
private fun getVideosList() {
val videos = RetrofitInstance.youtubeapi.getYoutubeVideos()
videos.enqueue(object : Callback<YoutubeAPIData?> {
override fun onResponse(call: Call<YoutubeAPIData?>, response: Response<YoutubeAPIData?>) {
val videosList = response.body()?.items
if (videosList != null) {
for(video in videosList) {
Log.d("title", video.snippet.title)
}
}
}
override fun onFailure(call: Call<YoutubeAPIData?>, t: Throwable) {
Toast.makeText(applicationContext, "Unable to fetch results!", Toast.LENGTH_SHORT).show()
Log.d("APIError",t.toString())
}
})
}
Retrofit Instance
object RetrofitInstance {
const val BASE_URL = "https://www.googleapis.com/youtube/v3/"
private val retrofit by lazy {
Retrofit.Builder()
.baseUrl(BASE_URL)
.addConverterFactory(GsonConverterFactory.create())
.build()
}
val youtubeapi: YoutubeListApi by lazy {
retrofit.create(YoutubeListApi::class.java)
}}
Code for API interface
interface YoutubeListApi {
#GET("search?part=snippet&q=eminem&key=*my_key*")
fun getYoutubeVideos(): Call<YoutubeAPIData>}
Now what I want is to change the #GET("search?part=snippet&q=eminem&key=my_key") in the api interface so that if the keyword is eminem it should be search?part=snippet&q=eminem&key=my_key
and if keyword is dog it should be search?part=snippet&q=dogkey=my_key

Answer 1

Why not use #Query from retrofit?
You could redefine your interface to:
interface YoutubeListApi {
#GET("search")
fun getYoutubeVideos(
#Query("part") part: String,
#Query("q") query: String,
#Query("key") key: String,
): Call<YoutubeAPIData>
}
and then you can call it like getYoutubeVideos("snippets", "eminem", "your key") or getYoutubeVideos("snippets", "dog", "your key").
I think you can even hardcode some values in the URL if you want, but honestly I think you can just use kotlin default values:
interface YoutubeListApi {
#GET("search")
fun getYoutubeVideos(
#Query("q") query: String,
#Query("part") part: String = "snippet",
#Query("key") key: String = "your key",
): Call<YoutubeAPIData>
}
and just pass the query getYoutubeVideos("eminem"). I haven't double checked this, but I think it could work.