forms.py

import typing as _t
from abc import ABC

import pydantic
import typing_extensions as _te

from .. import class_name as _class_name
from .. import events, forms
from .. import types as _types

if _t.TYPE_CHECKING:
    from . import AnyComponent

InputHtmlType = _t.Literal['text', 'date', 'datetime-local', 'time', 'email', 'url', 'number', 'password', 'hidden']


class BaseFormField(pydantic.BaseModel, ABC, defer_build=True):
    name: str
    title: _t.Union[_t.List[str], str]
    required: bool = False
    error: _t.Union[str, None] = None
    locked: bool = False
    description: _t.Union[str, None] = None
    display_mode: _t.Union[_t.Literal['default', 'inline'], None] = pydantic.Field(
        default=None, serialization_alias='displayMode'
    )
    class_name: _class_name.ClassNameField = None


class FormFieldInput(BaseFormField):
    html_type: InputHtmlType = pydantic.Field(default='text', serialization_alias='htmlType')
    initial: _t.Union[str, float, None] = None
    placeholder: _t.Union[str, None] = None
    autocomplete: _t.Union[str, None] = None
    step: _t.Union[float, _t.Literal['any'], None] = None
    type: _t.Literal['FormFieldInput'] = 'FormFieldInput'


class FormFieldTextarea(BaseFormField):
    rows: _t.Union[int, None] = None
    cols: _t.Union[int, None] = None
    initial: _t.Union[str, None] = None
    placeholder: _t.Union[str, None] = None
    autocomplete: _t.Union[str, None] = None
    type: _t.Literal['FormFieldTextarea'] = 'FormFieldTextarea'


class FormFieldBoolean(BaseFormField):
    initial: _t.Union[bool, None] = None
    mode: _t.Literal['checkbox', 'switch'] = 'checkbox'
    type: _t.Literal['FormFieldBoolean'] = 'FormFieldBoolean'


class FormFieldFile(BaseFormField):
    multiple: _t.Union[bool, None] = None
    accept: _t.Union[str, None] = None
    type: _t.Literal['FormFieldFile'] = 'FormFieldFile'


class FormFieldSelect(BaseFormField):
    options: forms.SelectOptions
    multiple: _t.Union[bool, None] = None
    initial: _t.Union[_t.List[str], str, None] = None
    vanilla: _t.Union[bool, None] = None
    placeholder: _t.Union[str, None] = None
    autocomplete: _t.Union[str, None] = None
    type: _t.Literal['FormFieldSelect'] = 'FormFieldSelect'


class FormFieldSelectSearch(BaseFormField):
    search_url: str = pydantic.Field(serialization_alias='searchUrl')
    multiple: _t.Union[bool, None] = None
    initial: _t.Union[forms.SelectOption, None] = None
    # time in ms to debounce requests by, defaults to 300ms
    debounce: _t.Union[int, None] = None
    placeholder: _t.Union[str, None] = None
    type: _t.Literal['FormFieldSelectSearch'] = 'FormFieldSelectSearch'


FormField = _t.Union[
    FormFieldInput, FormFieldTextarea, FormFieldBoolean, FormFieldFile, FormFieldSelect, FormFieldSelectSearch
]


class BaseForm(pydantic.BaseModel, ABC, defer_build=True, extra='forbid'):
    submit_url: str = pydantic.Field(serialization_alias='submitUrl')
    initial: _t.Union[_t.Dict[str, _types.JsonData], None] = None
    method: _t.Literal['POST', 'GOTO', 'GET'] = 'POST'
    display_mode: _t.Union[_t.Literal['default', 'page', 'inline'], None] = pydantic.Field(
        default=None, serialization_alias='displayMode'
    )
    submit_on_change: _t.Union[bool, None] = pydantic.Field(default=None, serialization_alias='submitOnChange')
    submit_trigger: _t.Union[events.PageEvent, None] = pydantic.Field(default=None, serialization_alias='submitTrigger')
    loading: '_t.Union[_t.List[AnyComponent], None]' = None
    footer: '_t.Union[_t.List[AnyComponent], None]' = None
    class_name: _class_name.ClassNameField = None

    @pydantic.model_validator(mode='after')
    def default_footer(self) -> _te.Self:
        if self.footer is None and self.display_mode == 'inline':
            self.footer = []
        return self


class Form(BaseForm):
    form_fields: _t.List[FormField] = pydantic.Field(serialization_alias='formFields')
    type: _t.Literal['Form'] = 'Form'


FormFieldsModel = _t.TypeVar('FormFieldsModel', bound=pydantic.BaseModel)


class ModelForm(BaseForm):
    model: _t.Type[pydantic.BaseModel] = pydantic.Field(exclude=True)
    type: _t.Literal['ModelForm'] = 'ModelForm'

    @pydantic.computed_field(alias='formFields')
    def form_fields(self) -> _t.List[FormField]:
        from ..json_schema import model_json_schema_to_fields

        return model_json_schema_to_fields(self.model)