from django import forms
from django.conf import settings

from links.services import ValidationError, build_tracked_url, validate_target_url


class DebugCreateForm(forms.Form):
    target_url = forms.URLField(
        label="Target URL",
        widget=forms.URLInput(
            attrs={"placeholder": "https://mkdrealtor.com/listings/oak-st", "autofocus": True}
        ),
    )
    title = forms.CharField(label="Title", required=False, max_length=200)
    external_ref = forms.CharField(label="External ref", required=False, max_length=64)

    def clean_target_url(self) -> str:
        raw = self.cleaned_data["target_url"]
        try:
            return validate_target_url(raw)
        except ValidationError as exc:
            raise forms.ValidationError(str(exc)) from exc


def allowlisted_domain_choices() -> list[str]:
    hosts = list(getattr(settings, "SHORT_ALLOWED_HOSTS", []) or [])
    return [host for host in hosts if host and not host.startswith("*")]


class QuickMintForm(forms.Form):
    domain = forms.CharField(
        label="Domain",
        max_length=253,
        widget=forms.TextInput(
            attrs={
                "placeholder": "mkdrealtor.com",
                "list": "allowed-domains",
                "autocomplete": "off",
            }
        ),
    )
    campaign = forms.CharField(
        label="Campaign",
        max_length=200,
        widget=forms.TextInput(attrs={"placeholder": "open-house"}),
    )
    source = forms.CharField(
        label="Source",
        max_length=200,
        widget=forms.TextInput(attrs={"placeholder": "sms"}),
    )
    metric = forms.CharField(
        label="Metric",
        max_length=200,
        widget=forms.TextInput(attrs={"placeholder": "listing-click"}),
        help_text="Stored as utm_medium.",
    )

    def clean(self):
        cleaned = super().clean()
        domain = cleaned.get("domain")
        campaign = cleaned.get("campaign")
        source = cleaned.get("source")
        metric = cleaned.get("metric")
        if not all((domain, campaign, source, metric)):
            return cleaned
        try:
            cleaned["target_url"] = build_tracked_url(
                domain=domain,
                campaign=campaign,
                source=source,
                metric=metric,
            )
        except ValidationError as exc:
            self.add_error("domain", str(exc))
        return cleaned