import pytest

from django.forms.boundfield import BoundField
from django.forms.formsets import formset_factory
from django.template import Context, Template

from crispy_forms.exceptions import CrispyError
from crispy_forms.templatetags.crispy_forms_field import crispy_addon

from .conftest import only_bootstrap
from .forms import SampleForm


def test_crispy_field():
    template = Template(
        """
        {% load crispy_forms_field %}
        {% for field in form %}
            {% crispy_field field %}
        {% endfor %}
    """
    )
    html = template.render(Context({"form": SampleForm()}))
    assert html.count("<input") == 8


def test_as_crispy_errors_form_without_non_field_errors():
    template = Template(
        """
        {% load crispy_forms_tags %}
        {{ form|as_crispy_errors }}
    """
    )
    form = SampleForm({"password1": "god", "password2": "god"})
    form.is_valid()

    c = Context({"form": form})
    html = template.render(c)
    assert not ("errorMsg" in html or "alert" in html)


def test_as_crispy_errors_form_with_non_field_errors():
    template = Template(
        """
        {% load crispy_forms_tags %}
        {{ form|as_crispy_errors }}
    """
    )
    form = SampleForm({"password1": "god", "password2": "wargame"})
    form.is_valid()

    c = Context({"form": form})
    html = template.render(c)
    assert "errorMsg" in html or "alert" in html
    assert "<li>Passwords dont match</li>" in html
    assert "<h3>" not in html


def test_as_crispy_errors_formset_without_non_form_errors():
    template = Template(
        """
        {% load crispy_forms_tags %}
        {{ formset|as_crispy_errors }}
    """
    )

    SampleFormset = formset_factory(SampleForm, max_num=1, validate_max=True)
    formset = SampleFormset()
    formset.is_valid()

    c = Context({"formset": formset})
    html = template.render(c)
    assert not ("errorMsg" in html or "alert" in html)


def test_as_crispy_errors_formset_with_non_form_errors():
    template = Template(
        """
        {% load crispy_forms_tags %}
        {{ formset|as_crispy_errors }}
    """
    )

    SampleFormset = formset_factory(SampleForm, max_num=1, validate_max=True)
    formset = SampleFormset(
        {
            "form-TOTAL_FORMS": "2",
            "form-INITIAL_FORMS": "0",
            "form-MAX_NUM_FORMS": "",
            "form-0-password1": "god",
            "form-0-password2": "wargame",
        }
    )
    formset.is_valid()

    c = Context({"formset": formset})
    html = template.render(c)
    assert "errorMsg" in html or "alert" in html
    assert "<li>Please submit 1 or fewer forms.</li>" in html
    assert "<h3>" not in html


def test_as_crispy_field_non_field(settings):
    template = Template(
        """
        {% load crispy_forms_tags %}
        {{ field|as_crispy_field }}
    """
    )

    c = Context({"field": "notafield"})

    # Raises an AttributeError when trying to figure out how to render it
    # Not sure if this is expected behavior -- @kavdev
    error_class = CrispyError if settings.DEBUG else AttributeError

    with pytest.raises(error_class):
        template.render(c)


def test_as_crispy_field_bound_field():
    template = Template(
        """
        {% load crispy_forms_tags %}
        {{ field|as_crispy_field }}
    """
    )

    form = SampleForm({"password1": "god", "password2": "god"})
    form.is_valid()

    c = Context({"field": form["password1"]})

    # Would raise exception if not a field
    html = template.render(c)
    assert "id_password1" in html
    assert "id_password2" not in html


def test_crispy_filter_with_form():
    template = Template(
        """
        {% load crispy_forms_tags %}
        {{ form|crispy }}
    """
    )
    c = Context({"form": SampleForm()})
    html = template.render(c)

    assert "<td>" not in html
    assert "id_is_company" in html
    assert html.count("<label") == 7


def test_crispy_filter_with_formset():
    template = Template(
        """
        {% load crispy_forms_tags %}
        {{ testFormset|crispy }}
    """
    )

    SampleFormset = formset_factory(SampleForm, extra=4)
    testFormset = SampleFormset()

    c = Context({"testFormset": testFormset})
    html = template.render(c)

    assert html.count("<form") == 0
    # Check formset management form
    assert "form-TOTAL_FORMS" in html
    assert "form-INITIAL_FORMS" in html
    assert "form-MAX_NUM_FORMS" in html


def test_classes_filter():
    template = Template(
        """
        {% load crispy_forms_field %}
        {{ testField|classes }}
    """
    )

    test_form = SampleForm()
    test_form.fields["email"].widget.attrs.update({"class": "email-fields"})
    c = Context({"testField": test_form.fields["email"]})
    html = template.render(c)
    assert "email-fields" in html


def test_crispy_field_and_class_converters():
    template = Template(
        """
        {% load crispy_forms_field %}
        {% crispy_field testField 'class' 'error' %}
    """
    )
    test_form = SampleForm()
    field_instance = test_form.fields["email"]
    bound_field = BoundField(test_form, field_instance, "email")

    c = Context({"testField": bound_field})
    html = template.render(c)
    assert "error" in html
    assert "inputtext" in html


@only_bootstrap
def test_crispy_addon(settings):
    test_form = SampleForm()
    field_instance = test_form.fields["email"]
    bound_field = BoundField(test_form, field_instance, "email")

    if settings.CRISPY_TEMPLATE_PACK == "bootstrap":
        # prepend tests
        assert "input-prepend" in crispy_addon(bound_field, prepend="Work")
        assert "input-append" not in crispy_addon(bound_field, prepend="Work")
        # append tests
        assert "input-prepend" not in crispy_addon(bound_field, append="Primary")
        assert "input-append" in crispy_addon(bound_field, append="Secondary")
        # prepend and append tests
        assert "input-append" in crispy_addon(bound_field, prepend="Work", append="Primary")
        assert "input-prepend" in crispy_addon(bound_field, prepend="Work", append="Secondary")
    elif settings.CRISPY_TEMPLATE_PACK == "bootstrap3":
        assert "input-group-addon" in crispy_addon(bound_field, prepend="Work", append="Primary")
        assert "input-group-addon" in crispy_addon(bound_field, prepend="Work", append="Secondary")
    elif settings.CRISPY_TEMPLATE_PACK == "bootstrap4":
        assert "input-group-text" in crispy_addon(bound_field, prepend="Work", append="Primary")
        assert "input-group-text" in crispy_addon(bound_field, prepend="Work", append="Secondary")

    # errors
    with pytest.raises(TypeError):
        crispy_addon()
    with pytest.raises(TypeError):
        crispy_addon(bound_field)
