from django import forms
from django.conf import settings
from django.contrib import admin
from django.db.models import TextField
from django.forms import Textarea
from django.utils.translation import gettext_lazy as _

from .models import Image
from .models import Link
from .models import MemberOnPost
from .models import Post
from .models import Section


class ImageInline(admin.TabularInline):
    model = Image
    extra = 0


class MemberOnPostInline(admin.TabularInline):
    model = MemberOnPost
    extra = 0


class PostForm(forms.ModelForm):
    urlname = forms.RegexField(
        regex=r"^{pattern}+$".format(pattern=settings.STARTPAGE_URL_NAME_PATTERN),
        label=_("URL"),
        error_messages={
            "invalid": _("The url may only consist of letters, numerals, _, -, :, * and spaces.")
        },
    )


@admin.register(Post)
class PostAdmin(admin.ModelAdmin):
    inlines = [ImageInline, MemberOnPostInline]
    list_display = ["title", "date", "section", "absolute_urlname"]
    list_filter = ["section"]
    search_fields = ["title"]
    form = PostForm


class SectionForm(forms.ModelForm):
    urlname = forms.RegexField(
        regex=r"^{pattern}+$".format(pattern=settings.STARTPAGE_URL_NAME_PATTERN),
        label=_("URL"),
        error_messages={
            "invalid": _("The url may only consist of letters, numerals, _, -, :, * and spaces.")
        },
    )


@admin.register(Section)
class SectionAdmin(admin.ModelAdmin):
    list_display = ["title", "absolute_urlname"]
    form = SectionForm


@admin.register(Link)
class LinkAdmin(admin.ModelAdmin):
    list_display = ["title", "url", "visible"]

    formfield_overrides = {TextField: {"widget": Textarea(attrs={"rows": 2, "cols": 40})}}