from django import template
from django.utils.safestring import mark_safe
register = template.Library()
import seminar.models as m

@register.filter(name='deadline_kratseji')
def deadline_kratsi_text(deadline: m.Deadline):
	if deadline is None:
		return 'NONE'
	strings = {
		m.Deadline.TYP_PRVNI: f"{deadline.cislo} ⭯",
		m.Deadline.TYP_SOUS: f"{deadline.cislo} Ⓢ",
		m.Deadline.TYP_PRVNI_A_SOUS: f"{deadline.cislo} ⭯Ⓢ",
		m.Deadline.TYP_CISLA: f"{deadline.cislo} ✓",
		}
	return strings[deadline.typ]

@register.filter(name='deadline_html')
def deadline_html(deadline: m.Deadline):
	if deadline is None:
		return 'Neznámý deadline'
	text = deadline_kratsi_text(deadline)
	classes = {
		m.Deadline.TYP_PRVNI: 'preddeadline',
		m.Deadline.TYP_SOUS: 'sous_deadline',
		m.Deadline.TYP_PRVNI_A_SOUS: 'sous_deadline',
		m.Deadline.TYP_CISLA: 'final_deadline',
		}
	return mark_safe(f'<span class="{classes[deadline.typ]}" title="{deadline}">{text}</span>')

@register.filter(name='zkrat_nazev_problemu')
def zkrat_nazev_problemu(nazev,width):
	if len(nazev) > width:
		if nazev[width-1] == " ":
			nazev = nazev[:width-1] + "..."
		else:
			nazev = nazev[:width] + "..."
	return nazev