from django.shortcuts import render, get_object_or_404
from django.contrib.auth.decorators import login_required
from django.views.decorators.http import require_http_methods
from django.http import HttpResponse, HttpResponseRedirect
from django.db.models import Q

from jumpers.models import Jumper
from .models import Chrono, Skill
from .forms import ChronoForm, LearnedSkillForm

import simplejson

@login_required
@require_http_methods(["GET"])
def chrono_listing(request):
    """ Récupère la liste des chronos """

    chrono_list = Chrono.objects.all()
    context = {'chrono_list': chrono_list}
    return render(request, "chronos/list.html", context)


@login_required
@require_http_methods(["GET", "POST"])
def chrono_create_or_update(request, chronoid=None, jumperid=None):
    """ Création ou modification d'un chrono """

    if chronoid:
        chrono = get_object_or_404(Chrono, pk=chronoid)
        data = {
            "jumper": chrono.jumper.id,
            "jumper_related": str(chrono.jumper),
        }
    else:
        chrono = None
        data = None

    if request.method == "POST":
        form = ChronoForm(request.POST, instance=chrono)

        if form.is_valid():
            # calculer ici le ToF
            # if form.score_type == 1:
            #     form.tof = form.score
            # else:
            #     form.tof = round(( form.score * 13 ) / 15, 3)
            #     form.tof = ( form.tof * 1000 ) - (( form.tof * 1000 ) % 5)
            #     form.tof = form.tof  / 1000
            form.save()
            if chronoid is not None:
                return HttpResponseRedirect("/chrono/")
            elif jumperid is not None:
                return HttpResponseRedirect(
                    "/jumper/" + str(jumperid)
                )
            else:
                return HttpResponseRedirect("/chrono/")

    else:
        if data is None and jumperid is not None:
            jumper = get_object_or_404(Jumper, pk=jumperid)
            data = {"jumper": jumperid, "jumper_related": jumper}

        form = ChronoForm(instance=chrono, initial=data)

    context = {"form": form, "chronoid": chronoid}
    return render(request, "chronos/create.html", context)


@login_required
@require_http_methods(["GET"])
def skill_lookup(request):
    """
    Récupère la liste des skill à la volée suivant des caractères de
    recherche entrés. (min 3 caractères)
    """

    results = []
    pattern = request.GET.get("pattern", None)

    # Ignore queries shorter than length 3
    if pattern is not None and len(pattern) > 3:
        model_results = Skill.objects.filter(
            Q(short_label__icontains=pattern) | Q(long_label__icontains=pattern)
        )
        results = [{"ID": x.id, "Name": str(x)} for x in model_results]

    json = simplejson.dumps(results)
    return HttpResponse(json, content_type="application/json")


@login_required
@require_http_methods(["GET"])
def skill_listing(request, field=None, expression=None, value=None, level=None):
    """
    Récupère la liste des skills suivant un pattern si celui-ci est définit.
    """

    pattern = None

    if not field or not value or not expression:
        pattern = request.GET.get("pattern", None)

    if pattern:
        skill_list = Skill.objects.filter(
            Q(longLabel__icontains=pattern) | Q(shortLabel__icontains=pattern)
        )
    elif field and expression and value:
        kwargs = {"{0}__{1}".format(field, expression): value}
        skill_list = Skill.objects.filter(**kwargs)
    elif level is not None:
        skill_list = Skill.objects.filter
    else:
        skill_list = Skill.objects.all()

    context = {'skill_list': skill_list}
    return render(request, 'skills/list.html', context)


@login_required
@require_http_methods(["GET"])
def skill_details(request, skillid):
    """
    Récupère toutes les informations d'un skill.

    :param skillig:     id d'un `skill`
    :type skillid:      int

    :return: skill
    """
    context = {"skill": get_object_or_404(Skill, pk=skillid)}
    return render(request, "skills/details.html", context)


@login_required
@require_http_methods(["GET", "POST"])
def learnedskill_create_or_update(request, jumperid=None):
    """
    Formulaire de creation et modification d'un lien skill/gymnaste.
    """

    if jumperid:
        jumper = get_object_or_404(Jumper, pk=jumperid)
        data = {
            "jumper": jumper.id,
            "jumper_related": str(jumper),
        }
    else:
        data = {}

    if request.method == "POST":
        learnedskill_form = LearnedSkillForm(request.POST)

        if learnedskill_form.is_valid():
            learnedskill_form.save()
            return HttpResponseRedirect("/jumper/details/" + str(learnedskill_form.cleaned_data['jumper'].id))
        else:
            print(learnedskill_form.errors)

    form = LearnedSkillForm(initial=data)

    context = {"form": form, "jumperid": jumperid}
    return render(request, "learnedskills/create.html", context)