# apps/m3u/forms.py
from django import forms
from .models import M3UAccount, M3UFilter
import re

class M3UAccountForm(forms.ModelForm):
    class Meta:
        model = M3UAccount
        fields = [
            'name',
            'server_url',
            'uploaded_file',
            'server_group',
            'max_streams',
            'is_active',
        ]

    def clean_uploaded_file(self):
        uploaded_file = self.cleaned_data.get('uploaded_file')
        if uploaded_file:
            if not uploaded_file.name.endswith('.m3u'):
                raise forms.ValidationError("The uploaded file must be an M3U file.")
        return uploaded_file

    def clean(self):
        cleaned_data = super().clean()
        url = cleaned_data.get('server_url')
        file = cleaned_data.get('uploaded_file')
        # Ensure either `server_url` or `uploaded_file` is provided
        if not url and not file:
            raise forms.ValidationError("Either an M3U URL or a file upload is required.")
        return cleaned_data


class M3UFilterForm(forms.ModelForm):
    class Meta:
        model = M3UFilter
        fields = ['m3u_account', 'filter_type', 'regex_pattern', 'exclude']

    def clean_regex_pattern(self):
        pattern = self.cleaned_data['regex_pattern']
        try:
            re.compile(pattern)
        except re.error:
            raise forms.ValidationError("Invalid regex pattern")
        return pattern