package endpoints

import (
	"arbeitszeitmessung/helper"
	"arbeitszeitmessung/models"
	"arbeitszeitmessung/templates"
	"context"
	"errors"
	"log"
	"net/http"
	"strconv"
	"time"
)

func TeamHandler(w http.ResponseWriter, r *http.Request) {
	helper.RequiresLogin(Session, w, r)
	switch r.Method {
	case http.MethodPost:
		submitReport(w, r)
	case http.MethodGet:
		showWeeks(w, r)
	default:
		http.Error(w, "Method not allowed!", http.StatusMethodNotAllowed)
	}
}

func submitReport(w http.ResponseWriter, r *http.Request) {
	err := r.ParseForm()
	if err != nil {
		log.Println("Error parsing form", err)
		return
	}
	userPN, _ := strconv.Atoi(r.FormValue("user"))
	_weekTs := r.FormValue("week")
	weekTs, err := time.Parse(time.DateOnly, _weekTs)
	user, err := models.GetUserByPersonalNr(userPN)
	workWeek := models.NewWorkWeek(user, weekTs, true)

	if err != nil {
		log.Println("Could not get user!")
		return
	}

	switch r.FormValue("method") {
	case "send":
		err = workWeek.SendWeek()
	case "accept":
		err = workWeek.Accept()
	default:
		break
	}
	if errors.Is(err, models.ErrRunningWeek) {
		showWeeks(w, r.WithContext(context.WithValue(r.Context(), "error", true)))
	}
	showWeeks(w, r)
}

func showWeeks(w http.ResponseWriter, r *http.Request) {
	user, err := models.GetUserFromSession(Session, r.Context())
	if err != nil {
		log.Println("No user found with the given personal number!")
		http.Redirect(w, r, "/user/login", http.StatusSeeOther)
		return
	}
	submissionDate := r.URL.Query().Get("submission_date")
	lastSub := user.GetLastWorkWeekSubmission()
	if submissionDate != "" {
		submissionDate, err := time.Parse("2006-01-02", submissionDate)
		if err == nil {
			lastSub = helper.GetMonday(submissionDate)
		}
	}
	userWeek := models.NewWorkWeek(user, lastSub, true)

	var workWeeks []models.WorkWeek
	teamMembers, err := user.GetTeamMembers()
	for _, member := range teamMembers {
		weeks := (*models.WorkWeek).GetSendWeeks(nil, member)
		workWeeks = append(workWeeks, weeks...)
	}
	// isRunningWeek := time.Since(lastSub) < 24*5*time.Hour //the last submission is this week and cannot be send yet
	templates.TeamPage([]models.WorkWeek{userWeek, userWeek}, userWeek).Render(r.Context(), w)
}