package main

import (
	"fmt"
	"html/template"
	"log"
	"net/http"

	"streifling.com/jason/sicherheitsunterweisung/packages/data"
	"streifling.com/jason/sicherheitsunterweisung/packages/session"
)

func handleParticipants(mux *http.ServeMux, db *data.DB, cp <-chan *data.Participant, s *session.Session) {
	for participant := range cp {
		mux.HandleFunc("/submit-participant/"+fmt.Sprint(s.ID)+"/"+fmt.Sprint(participant.Login)+"/", s.HandleParticipant(db, participant, &s.Questions))
		for i := range s.Questions {
			mux.HandleFunc("/submit-answer/"+fmt.Sprint(s.ID)+"/"+fmt.Sprint(participant.Login)+"/"+fmt.Sprint(i+1)+"/", s.HandleAnswer(db, participant, &s.Questions, int64(i+1)))
		}
		mux.HandleFunc("/retry/"+fmt.Sprint(s.ID)+"/"+fmt.Sprint(participant.Login)+"/", s.HandleRetry(participant, &s.Questions))
	}
}

func handleSessions(mux *http.ServeMux, db *data.DB, cs <-chan *session.Session, ss *[]*session.Session) {
	for s := range cs {
		(*ss) = append(*ss, s)
		participantChan := make(chan *data.Participant)
		questionIDs := make([]string, 4)

		for i := 0; i < len(questionIDs); i++ {
			questionIDs[i] = fmt.Sprint(i + 1)
		}

		var err error
		s.Questions, err = db.GetQuestions(questionIDs)
		if err != nil {
			log.Fatalln(err)
		}

		mux.HandleFunc("/new-briefing/", s.HandleNewBriefing())
		mux.HandleFunc("/new-participant/"+fmt.Sprint(s.ID)+"/", s.HandleNewParticipant(participantChan))
		mux.HandleFunc("/submit-form/"+fmt.Sprint(s.ID)+"/", s.HandleBriefingForm(db))

		go handleParticipants(mux, db, participantChan, s)
	}
}

func main() {
	db, err := data.OpenDB("sicherheitsunterweisung")
	if err != nil {
		log.Fatalln(err)
	}

	mux := http.NewServeMux()
	sessions := make([]*session.Session, 0)
	sessionChan := make(chan *session.Session)

	mux.Handle("/static/", http.StripPrefix("/static/", http.FileServer(http.Dir("static/"))))
	mux.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
		template.Must(template.ParseFiles("templates/index.html", "templates/login.html")).Execute(w, nil)
	})
	mux.HandleFunc("/internal-login/", session.HandleInternalLogin(db, &sessions, sessionChan))
	mux.HandleFunc("/external-login/", session.HandleExternalLogin(&sessions))
	mux.HandleFunc("/search/", session.HandleSearch(db))

	go handleSessions(mux, db, sessionChan, &sessions)

	log.Fatalln(http.ListenAndServe(":8080", mux))
}