"""
Author: Michel Peltriaux
Organization: Struktur- und Genehmigungsdirektion Nord, Rhineland-Palatinate, Germany
Contact: michel.peltriaux@sgdnord.rlp.de
Created on: 25.11.20

"""
import uuid

from django import forms
from django.core.paginator import PageNotAnInteger, EmptyPage
from django.http import HttpRequest
from django.utils.html import format_html
import django_tables2 as tables

from konova.forms import BaseForm
from konova.settings import PAGE_SIZE_DEFAULT, PAGE_PARAM, RESULTS_PER_PAGE_PARAM, PAGE_SIZE_OPTIONS


class BaseTable(tables.tables.Table):
    results_per_page_choices = PAGE_SIZE_OPTIONS
    results_per_page_chosen = None
    results_per_page_parameter = RESULTS_PER_PAGE_PARAM
    add_new_entries = True
    add_new_url = None
    title = None

    def __init__(self, request: HttpRequest = None, filter_set=None, queryset=None, *args, **kwargs):
        self.user = request.user or None
        if filter_set is not None:
            queryset = filter_set.qs
        kwargs["data"] = queryset
        kwargs["request"] = request
        super().__init__(*args, **kwargs)
        self.results_per_page_chosen = int(request.GET.get(RESULTS_PER_PAGE_PARAM, PAGE_SIZE_DEFAULT))
        try:
            self.paginate(
                page=request.GET.get(PAGE_PARAM, 1),
                per_page=self.results_per_page_chosen,
            )
        except (PageNotAnInteger, EmptyPage) as e:
            self.paginate(
                page=1,
                per_page=self.results_per_page_chosen,
            )

    def render_link(self, tooltip: str, href: str, txt: str, new_tab: bool = False):
        """
        Returns an <a> html element using given parameters
        """
        new_tab = "_blank" if new_tab else "_self"
        return format_html(
            "<a href={} target='{}' title='{}'>{}</a>",
            href,
            new_tab,
            tooltip,
            txt,
        )

    def render_delete_btn(self, tooltip: str = None, href: str = None):
        """
        Returns a remover icon with <a> support as html element using given parameters
        """
        return format_html(
            "<a href={} title='{}'><button class='button small'><em class='fas fa-trash-alt'></em></button></a>",
            href,
            tooltip,
        )

    def render_edit_btn(self, tooltip: str = None, href: str = None):
        """
        Returns a remover icon with <a> support as html element using given parameters
        """
        return format_html(
            "<a href={} title='{}'><button class='button small'><em class='fas fa-edit'></em></button></a>",
            href,
            tooltip,
        )

    def render_open_btn(self, tooltip: str = None, href: str = None, new_tab: bool = False):
        """
        Returns a remover icon with <a> support as html element using given parameters
        """
        return format_html(
            "<a href={} title='{}' target='{}'><button class='button small'><em class='fas fa-sign-in-alt'></em></button></a>",
            href,
            tooltip,
            "_blank" if new_tab else ""
        )

    def render_boolean(self, tooltip: str = None, val: bool = False):
        """
        Returns a remover icon with <a> support as html element using given parameters
        """
        icon = "fas fa-check-circle true" if val else "fas fa-times-circle false"
        return format_html(
            "<em title='{}' class='{}'></em>",
            tooltip,
            icon
        )


class ChoicesColumnForm(BaseForm):
    select = forms.ChoiceField(
        choices=[],
        label="",
        label_suffix="",
        widget=forms.Select(
            attrs={
                "onchange": "submit();",
            }
        )
    )

    def __init__(self, *args, **kwargs):
        self.action_url = kwargs.pop("action_url", None)
        self.choices = kwargs.pop("choices", [])
        super().__init__(*args, **kwargs)
        self.auto_id += "_" + str(uuid.uuid4())
        if len(self.choices) > 0:
            self.fields["select"].choices = self.choices