package main

import (
	"log"
	"net/http"
	"os"

	"github.com/prometheus/client_golang/prometheus/promhttp"
)

var (
	SigningToken = os.Getenv("SIGNING_TOKEN")
)

func main() {
	listenAddr := os.Getenv("LISTEN_ADDR")
	if listenAddr == "" {
		listenAddr = "0.0.0.0:8555"
	}

	mux := http.NewServeMux()

	// our routes
	mux.HandleFunc("/hook/{token}", postGetHookToken)
	mux.HandleFunc("/healthcheck", getHealthcheck)

	go populateSwitches()

	// prometheus
	mux.Handle("/metrics", promhttp.Handler())

	log.Println("[main] http server listening on", listenAddr)
	err := http.ListenAndServe(listenAddr, mux)
	if err != nil {
		log.Fatalln("[main] http server errored", err)
	}
}

func errMethodNotAllowed(rw http.ResponseWriter) {
	rw.Header().Add("content-type", "text/plain")
	rw.WriteHeader(http.StatusMethodNotAllowed)
	rw.Write([]byte("405 Method Not Allowed"))
}

func errStatusInternalServerError(rw http.ResponseWriter) {
	rw.Header().Add("content-type", "text/plain")
	rw.WriteHeader(http.StatusInternalServerError)
	rw.Write([]byte("500 Internal Server Error"))
}

func errUnauthorized(rw http.ResponseWriter) {
	rw.Header().Add("content-type", "text/plain")
	rw.WriteHeader(http.StatusUnauthorized)
	rw.Write([]byte("401 Unauthorized"))
}

func errBadRequest(rw http.ResponseWriter) {
	rw.Header().Add("content-type", "text/plain")
	rw.WriteHeader(http.StatusBadRequest)
	rw.Write([]byte("401 Bad Request"))
}

func basicOk(rw http.ResponseWriter) {
	rw.Header().Add("content-type", "text/plain")
	rw.WriteHeader(http.StatusOK)
	rw.Write([]byte("200 Aight Request"))
}

func basicNoContent(rw http.ResponseWriter) {
	rw.Header().Add("content-type", "text/plain")
	rw.WriteHeader(http.StatusNoContent)
	rw.Write([]byte("204 No Content (debug: likely not handled)"))
}

func getHealthcheck(rw http.ResponseWriter, req *http.Request) {
	_, err := pkApi.GetMember("iodbz")
	if err != nil {
		log.Println("[HEALTHCHECK FAIL] failed to reach pluralkit", err)
		errStatusInternalServerError(rw)
		return
	}
}