package v1

import (
	"github.com/gorilla/mux"
	"net/http"
	"strconv"
)

func RegisterGenresRoutes(r *mux.Router) {
	r.HandleFunc("/genres", resolveGenres).Methods("GET", "OPTIONS", "POST")                     // GET, POST
	r.HandleFunc("/genres/{id:[0-9]+}", resolveGenre).Methods("GET", "OPTIONS", "PUT", "DELETE") // GET, PUT, DELETE
	r.HandleFunc("/genres/{id:[0-9]+}/novels", resolveGenreNovels).Methods("GET", "OPTIONS")     // GET
}

func resolveGenres(w http.ResponseWriter, r *http.Request) {
	if r.Method == http.MethodGet {
		genres, err := FetchGenres()
		Response(w, err, genres)
	} else if r.Method == http.MethodPost {
		RawError(w, "method not implemented")
	}
}

func resolveGenre(w http.ResponseWriter, r *http.Request) {
	vars := mux.Vars(r)
	id, _ := strconv.Atoi(vars["id"])

	genre, err := FetchGenre(id)
	Response(w, err, genre)
}

func resolveGenreNovels(w http.ResponseWriter, r *http.Request) {
	vars := mux.Vars(r)
	id, _ := strconv.Atoi(vars["id"])

	novels, err := FetchGenreNovels(id)
	Response(w, err, novels)
}