from django.contrib import messages
from django.shortcuts import redirect
from django.utils.translation import gettext as _

from ..admin.views import render as mi_render
from .cache import clear_settings_cache
from .forms import ChangeSettingsForm
from .models import SettingsGroup


def render(request, template, context=None):
    context = context or {}

    context["settings_groups"] = SettingsGroup.objects.ordered_alphabetically()

    if "active_group" not in context:
        context["active_group"] = {"key": None}

    return mi_render(request, template, context)


def index(request):
    return render(request, "misago/admin/conf/index.html")


def group(request, key):
    try:
        active_group = SettingsGroup.objects.get(key=key)
    except SettingsGroup.DoesNotExist:
        messages.error(request, _("Settings group could not be found."))
        return redirect("misago:admin:settings:index")

    fieldsets = ChangeSettingsForm(group=active_group)
    if request.method == "POST":
        fieldsets = ChangeSettingsForm(request.POST, group=active_group)
        valid_fieldsets = len(
            [True for fieldset in fieldsets if fieldset["form"].is_valid()]
        )
        if len(fieldsets) == valid_fieldsets:
            new_values = {}
            for fieldset in fieldsets:
                new_values.update(fieldset["form"].cleaned_data)

            for setting in active_group.setting_set.all():
                setting.value = new_values[setting.setting]
                setting.save(update_fields=["dry_value"])

            clear_settings_cache()

            messages.success(request, _("Changes in settings have been saved!"))
            return redirect("misago:admin:settings:group", key=key)

    use_single_form_template = len(fieldsets) == 1 and not fieldsets[0]["legend"]

    return render(
        request,
        "misago/admin/conf/group.html",
        {
            "active_group": active_group,
            "fieldsets": fieldsets,
            "use_single_form_template": use_single_form_template,
        },
    )