package main

import (
	"encoding/json"
	"github.com/gorilla/mux"
	"log"
	"net/http"
)

func handleHome(w http.ResponseWriter, r *http.Request) {
	w.Write([]byte("stats OK"))
}

func handleEntryOptions(w http.ResponseWriter, r *http.Request) {
	w.Header().Set("Access-Control-Allow-Origin", "*")
	w.Header().Set("Access-Control-Allow-Methods", "POST")
	w.Header().Set("Access-Control-Allow-Headers", "Content-Type")
	w.WriteHeader(http.StatusNoContent)
}

func handleEntryPost(w http.ResponseWriter, r *http.Request) {
	w.Header().Set("Access-Control-Allow-Origin", "*")
	w.Header().Set("Access-Control-Allow-Methods", "POST")
	w.Header().Set("Access-Control-Allow-Headers", "Content-Type")

	var entry Entry

	err := json.NewDecoder(r.Body).Decode(&entry)
	if err != nil {
		http.Error(w, err.Error(), http.StatusBadRequest)
		return
	}

	err = InsertEntry(&entry)
	if err != nil {
		http.Error(w, err.Error(), http.StatusInternalServerError)
		return
	}
}

func handleRequests() {
	router := mux.NewRouter()
	router.HandleFunc("/", handleHome)
	router.HandleFunc("/entry", handleEntryPost).Methods("POST")
	router.HandleFunc("/entry", handleEntryOptions).Methods("OPTIONS")

	log.Fatal(http.ListenAndServe(":8080", router))
}

func main() {
	log.Println("Starting up")
	InitEntries()
	defer CloseEntries()
	handleRequests()
}