from crispy_forms.helper import FormHelper
from crispy_forms.layout import Submit, Layout
from django import forms
from django.contrib.auth.forms import UserCreationForm
from django.urls import reverse
from django.utils import timezone

from .models import User, Reference, QSO, ShadowCall, EntryCategory, Contest
from .validators import CallUsernameValidator, CallLogValidator


class CustomUserCreationForm(UserCreationForm):
    class Meta:
        model = User
        fields = ("username", "email", "dncall", "qrv2m", "qrv70cm", "extra2m70cm")

    username = forms.CharField(max_length=50, validators=[CallUsernameValidator()])
    email = forms.EmailField(required=True)


class UpdateRefForm(forms.Form):
    existingRef = forms.ModelChoiceField(label="Existing Exchange", queryset=Reference.objects.all(),
                                         help_text="If exchange already exists, select it here.", required=False)
    newRefName = forms.CharField(max_length=50, label="New Exchange",
                                 help_text="Enter name of new exchange, if we should create a new", required=False)

    location = forms.CharField(max_length=128, label='Exact Location',
                               help_text="E.g. MAR bei den Fahrstuehlen, TEL 15. OG", required=False)
    opName = forms.CharField(max_length=128, label='Operators', help_text="Name of operator(s)", required=False)
    regTime = forms.DateTimeField(label="Registration time", help_text="Time of Registration")

    def clean_newRefName(self):
        data = self.cleaned_data["newRefName"].strip().upper()

        return data

    def clean(self):
        cleaned_data = super(UpdateRefForm, self).clean()

        existingRef = cleaned_data.get("existingRef")
        newRefName = cleaned_data.get("newRefName")

        if newRefName:
            try:
                ref = Reference.objects.get(name=newRefName)
                self.cleaned_data['newRefName'] = None
                self.cleaned_data['existingRef'] = ref
            except Reference.DoesNotExist:
                pass

        if existingRef and newRefName:
            raise forms.ValidationError("Select an existing exchange or create a new one, not both!")
        if not existingRef and not newRefName:
            raise forms.ValidationError("Select either an existing exchange or create a new one!")


class UpdateCategoryForm(forms.Form):
    entry = forms.ModelChoiceField(label="Entry category", queryset=EntryCategory.objects.all())

    def __init__(self, *args, **kwargs):
        super(UpdateCategoryForm, self).__init__(*args, **kwargs)

        self.helper = FormHelper()
        self.helper.form_class = "form-inline "
        self.helper.form_style = 'inline'
        self.helper.field_template = "bootstrap3/layout/inline_field.html"
        self.helper.action = reverse("profile")
        self.helper.add_input(Submit('submit', 'Set category'))
        self.helper.layout = Layout('entry')

    def clean(self):
        contest = Contest.objects.get(id=1)

        if contest.deadline < timezone.now():
            raise forms.ValidationError("The deadline for setting your contest category has passed")


class QSOForm(forms.ModelForm):
    class Meta:
        model = QSO
        # fields = ["ownNo", "band", "call", "reportTX", "reportRX", "refStr", "otherNo", "remarks"]
        fields = ["ownNo", "band", "call", "reportTX", "reportRX", "refStr", "remarks"]

    def __init__(self, user, *args, **kwargs):
        super(QSOForm, self).__init__(*args, **kwargs)
        self.user = user

        self.helper = FormHelper()
        self.helper.form_id = "qso-log-form"
        # self.helper.form_class = "form-inline "
        # self.helper.form_class = "form-horizontal"
        # self.helper.form_style = 'inline'
        # self.helper.field_template = "bootstrap3/layout/inline_field.html"
        self.helper.action = reverse("contest:log")
        self.helper.add_input(Submit('submit', 'Log'))
        # self.helper.layout = Layout(
        #     #*(QSOForm.Meta.fields +  [ButtonHolder(Submit('submit', 'Submit', css_class='button white'))]))
        #     *(QSOForm.Meta.fields +  [FormActions(Submit('submit', 'Log!'))]))

    def clean_call(self):
        data = self.cleaned_data["call"].upper().strip()

        try:
            CallLogValidator()(data)
        except forms.ValidationError:
            raise forms.ValidationError("Enter a valid callsign (1-2 chars, a number, 1-4 chars, maybe a /[A-Z])")

        if data == self.user.username:
            raise forms.ValidationError("You cannot log QSOs with yourself")

        return data

    def clean_ownNo(self):
        data = self.cleaned_data["ownNo"]

        if data < 1 or data > 100000:
            raise forms.ValidationError("Number has to be in range of [1, 1000000]")

        try:
            o = QSO.objects.get(owner=self.user.id, ownNo=data)
            if not (self.instance and self.instance.id and self.instance.id == o.id):
                raise forms.ValidationError("You already logged a QSO with the number %s" % data)
        except QSO.DoesNotExist:
            pass

        return data

    def clean_otherNo(self):
        data = self.cleaned_data["otherNo"]

        if not data:
            # empty value
            return None

        if data < 1 or data > 100000:
            raise forms.ValidationError("Number has to be in range of [1, 1000000]")

        return data

    def clean_refStr(self):
        return self.cleaned_data["refStr"].upper()

    def clean(self):
        cleaned_data = super(QSOForm, self).clean()
        band = cleaned_data.get("band")

        if band.contest.deadline < timezone.now():
            raise forms.ValidationError("The deadline for logging and editing QSOs has passed")


class QSOFormWithTime(QSOForm):
    class Meta:
        model = QSO
        # fields = ["time", "ownNo", "band", "call", "reportTX", "reportRX", "otherNo", "refStr", "remarks"]
        fields = ["time", "ownNo", "band", "call", "reportTX", "reportRX", "refStr", "remarks"]


class ShadowCallAddForm(forms.ModelForm):

    class Meta:
        model = ShadowCall
        fields = ['username']

    def __init__(self, *args, **kwargs):
        super(ShadowCallAddForm, self).__init__(*args, **kwargs)

        self.helper = FormHelper()
        self.helper.form_class = "form-inline "
        self.helper.form_style = 'inline'
        self.helper.field_template = "bootstrap3/layout/inline_field.html"
        self.helper.action = reverse("contest:registerRefs")
        self.helper.add_input(Submit('submit', 'Add shadow'))
        self.helper.layout = Layout('username')

    def clean_username(self):
        data = self.cleaned_data["username"]
        if User.objects.filter(username=data).count() > 0:
            raise forms.ValidationError("A user with this call already exists, this is not a shadow!")

        return data