from datetime import datetime

import discord
from overrides import overrides
from pydantic import validator

from didier.data.embeds.base import EmbedPydantic
from didier.utils.discord import colours
from didier.utils.discord.constants import Limits
from didier.utils.types import string as string_utils

__all__ = ["Definition"]


class Definition(EmbedPydantic):
    """A definition from the Urban Dictionary"""

    word: str
    definition: str
    example: str
    permalink: str
    author: str
    thumbs_up: int
    thumbs_down: int
    written_on: datetime

    @property
    def ratio(self) -> float:
        """The up vote/down vote ratio

        This ratio is rounded down to 2 decimal places
        If the amount of down votes is 0, always return 100%
        """
        # No down votes, possibly no up votes either
        # Avoid a 0/0 situation
        if self.thumbs_down == 0:
            return 100

        total_votes = self.thumbs_up + self.thumbs_down
        return round(100 * self.thumbs_up / total_votes, 2)

    @validator("definition", "example")
    def modify_long_text(cls, field):
        """Remove brackets from fields & cut them off if they are too long"""
        field = field.replace("[", "").replace("]", "")
        return string_utils.abbreviate(field, max_length=Limits.EMBED_FIELD_VALUE_LENGTH)

    @overrides
    def to_embed(self, **kwargs) -> discord.Embed:
        embed = discord.Embed(title="Urban Dictionary", colour=colours.urban_dictionary_green())

        embed.add_field(name="Term", value=self.word, inline=True)
        embed.add_field(name="Author", value=self.author, inline=True)
        embed.add_field(name="Definition", value=self.definition, inline=False)
        embed.add_field(name="Example", value=self.example or "\u200B", inline=False)
        embed.add_field(
            name="Rating", value=f"{self.ratio}% ({self.thumbs_up}/{self.thumbs_up + self.thumbs_down})", inline=True
        )
        embed.add_field(name="Link", value=f"[Urban Dictionary]({self.permalink})", inline=True)

        return embed

    @staticmethod
    def no_result_found_embed() -> discord.Embed:
        """Embed shown when no definitions could be found"""
        embed = discord.Embed(title="Urban Dictionary", colour=colours.error_red())

        embed.description = "No definitions could be found."

        return embed