from typing import Any, Callable
from babel.support import LazyProxy
from dataclasses import dataclass, field

from .role import RoleBase
from . import EntityPermission

EntityCaptionCallable = Callable[["EntityDescriptor"], str]
EntityItemCaptionCallable = Callable[["EntityDescriptor", Any], str]
EntityFieldCaptionCallable = Callable[["EntityFieldDescriptor", Any, Any], str]


@dataclass(kw_only = True)
class _BaseEntityFieldDescriptor():
    icon: str = None
    caption_str: str | LazyProxy | EntityFieldCaptionCallable | None = None
    caption_btn: str | LazyProxy | EntityFieldCaptionCallable | None = None
    description: str | LazyProxy | EntityFieldCaptionCallable | None = None
    edit_prompt: str | LazyProxy | EntityFieldCaptionCallable | None = None
    caption_value_str: str | LazyProxy | EntityFieldCaptionCallable | None = None
    caption_value_btn: str | LazyProxy | EntityFieldCaptionCallable | None = None
    is_visible: bool = True
    localizable: bool = False
    bool_false_value: str | LazyProxy = "no"
    bool_false_value_btn: str | LazyProxy = "no"
    bool_true_value: str | LazyProxy = "yes"
    bool_true_value_btn: str | LazyProxy = "yes"
    default: Any = None


@dataclass(kw_only = True)
class EntityField(_BaseEntityFieldDescriptor):
    name: str | None = None
    sm_descriptor: Any = None


@dataclass(kw_only = True)
class Setting(_BaseEntityFieldDescriptor):
    name: str | None = None


@dataclass(kw_only = True)
class EntityFieldDescriptor(_BaseEntityFieldDescriptor):
    name: str
    field_name: str
    type_: type
    entity_descriptor: "EntityDescriptor" = None

    def __hash__(self):
        return self.name.__hash__()


@dataclass(kw_only = True)
class _BaseEntityDescriptor:

    icon: str = "📘"
    caption_msg: str | LazyProxy | EntityCaptionCallable | None = None
    caption_btn: str | LazyProxy | EntityCaptionCallable | None = None
    description: str | LazyProxy | EntityCaptionCallable | None = None
    item_caption_msg: EntityItemCaptionCallable | None = None
    item_caption_btn: EntityItemCaptionCallable | None = None
    show_in_entities_menu: bool = True
    field_sequence: list[str] = None
    edit_buttons: list[list[str]] = None
    permissions: dict[EntityPermission, list[RoleBase]] = field(default_factory = lambda: {
        EntityPermission.LIST: [RoleBase.DEFAULT_USER, RoleBase.SUPER_USER],
        EntityPermission.READ: [RoleBase.DEFAULT_USER, RoleBase.SUPER_USER],
        EntityPermission.CREATE: [RoleBase.DEFAULT_USER, RoleBase.SUPER_USER],
        EntityPermission.UPDATE: [RoleBase.DEFAULT_USER, RoleBase.SUPER_USER],
        EntityPermission.DELETE: [RoleBase.DEFAULT_USER, RoleBase.SUPER_USER],
        EntityPermission.LIST_ALL: [RoleBase.SUPER_USER],
        EntityPermission.READ_ALL: [RoleBase.SUPER_USER],
        EntityPermission.CREATE_ALL: [RoleBase.SUPER_USER],
        EntityPermission.UPDATE_ALL: [RoleBase.SUPER_USER],
        EntityPermission.DELETE_ALL: [RoleBase.SUPER_USER]
    })


@dataclass(kw_only = True)
class Entity(_BaseEntityDescriptor):

    name: str | None = None
    

@dataclass
class EntityDescriptor(_BaseEntityDescriptor):

    name: str
    class_name: str
    type_: type
    fields_descriptors: dict[str, EntityFieldDescriptor]