package server

import (
	"net/http"
	"strconv"
	"strings"
	"time"

	"github.com/a-h/templ"

	"git.bronku.xyz/bronku/cake-order-tracker/config"
	"git.bronku.xyz/bronku/cake-order-tracker/models"
	"git.bronku.xyz/bronku/cake-order-tracker/server/templates"
)

func weekInterval(t time.Time) (firstDay, lastDay time.Time) {
	monday := t.AddDate(0, 0, -((int(t.Weekday()) + 6) % 7))
	sunday := monday.AddDate(0, 0, 6)
	return monday, sunday
}

func (h *Server) orders(r *http.Request) (templ.Component, int, error) {
	now := time.Now()
	weekFirst, weekLast := weekInterval(now)

	first, last := weekFirst, weekLast
	if from := r.URL.Query().Get("from"); from != "" {
		if t, err := time.Parse(config.DateFormat, from); err == nil {
			first = t
		}
	}
	if to := r.URL.Query().Get("to"); to != "" {
		if t, err := time.Parse(config.DateFormat, to); err == nil {
			last = t
		}
	}

	today := now.Format(config.DateFormat)
	tomorrow := now.AddDate(0, 0, 1).Format(config.DateFormat)

	orders, err := h.s.GetOrders(first, last)
	return templates.OrdersPage(first.Format(config.DateFormat), last.Format(config.DateFormat), today, tomorrow, orders), http.StatusOK, err
}

func (h *Server) cakes(_ *http.Request) (templ.Component, int, error) {
	data, err := h.s.GetCakes()
	return templates.CakesPage(data), http.StatusOK, err
}

func (h *Server) cake(r *http.Request) (templ.Component, int, error) {
	url := strings.Split(r.URL.Path, "/")
	if len(url) < 3 || url[2] == "" {
		return templates.CakePage(models.Cake{}), http.StatusOK, nil
	}

	id, err := strconv.Atoi(url[2])
	if err != nil {
		return nil, http.StatusBadRequest, err
	}

	data, err := h.s.GetCake(id)
	if err != nil {
		return nil, http.StatusNotFound, err
	}

	return templates.CakePage(data), http.StatusOK, nil
}

func (h *Server) order(r *http.Request) (templ.Component, int, error) {
	var err error
	catalogue, err := h.s.GetCakes()
	if err != nil {
		return nil, http.StatusInternalServerError, err
	}

	url := strings.Split(r.URL.Path, "/")
	if len(url) < 3 || url[2] == "" {
		return templates.OrderPage(models.Order{Date: time.Now()}, catalogue), http.StatusOK, nil
	}

	id, err := strconv.Atoi(url[2])
	if err != nil {
		return nil, http.StatusBadRequest, err
	}

	order, err := h.s.GetOrder(id)
	if err != nil {
		return nil, http.StatusNotFound, err
	}

	return templates.OrderPage(order, catalogue), http.StatusOK, nil
}