from django import forms
from django.forms.models import modelform_factory

from bootstrap3_datetime.widgets import DateTimePicker
from django_markdown.widgets import MarkdownWidget

from issue.models import *


AddProjectForm = modelform_factory(Project,
        fields=['display_name', 'name', 'description', 'public'])
EditProjectForm = modelform_factory(Project,
        fields=['display_name', 'description', 'public'])
LabelForm = modelform_factory(Label,
        fields=['name', 'color', 'inverted'])
TeamForm = modelform_factory(Team,
        fields=['name', 'users', 'groups'])


class MilestoneForm(forms.ModelForm):

    class Meta:
        model = Milestone
        fields = ['name', 'due_date']
        widgets = {
            'due_date': DateTimePicker(format="YYYY-MM-DD HH:mm"),
        }


class IssueForm(forms.Form):
    title = forms.CharField(max_length=128)
    description = forms.CharField(widget=MarkdownWidget, required=False)


class CommentForm(forms.Form):
    comment = forms.CharField(widget=MarkdownWidget)


class PermissionForm(forms.ModelForm):

    class Meta:
        model = PermissionModel
        exclude = []
        abstract = True

    def clean(self):

        data = super(PermissionForm, self).clean()

        if 'grantee_name' not in data or 'grantee_type' not in data:
            # a field required error will be printed so we dont care
            return data

        name = data['grantee_name']

        if int(data['grantee_type']) == PermissionModel.GRANTEE_USER:
            if not User.objects.filter(username=name).exists():
                raise ValidationError("User '%s' does not exists." % name)
        elif int(data['grantee_type']) == PermissionModel.GRANTEE_GROUP:
            if not Group.objects.filter(name=name).exists():
                raise ValidationError("Group '%s' does not exists." % name)
        elif int(data['grantee_type']) == PermissionModel.GRANTEE_TEAM:
            if not Team.objects.filter(name=name).exists():
                raise ValidationError("Team '%s' does not exists." % name)

        return data


class GlobalPermissionForm(PermissionForm):

    class Meta:
        model = GlobalPermission
        exclude = []


class ProjectPermissionForm(PermissionForm):

    class Meta:
        model = ProjectPermission
        exclude = []