import discord
from discord.ext import commands
from discord import app_commands
import aiohttp
import re

class Lyrics(commands.Cog):
    def __init__(self, bot):
        self.bot = bot

    @app_commands.command(name="lyrics", description="Get lyrics for a song")
    @app_commands.describe(
        artist="Name of the artist",
        song="Title of the song",
        language="Target language code (optional)"
    )
    @app_commands.choices(language=[
        app_commands.Choice(name="Bulgarian", value="bg"),
        app_commands.Choice(name="Czech", value="cs"),
        app_commands.Choice(name="Danish", value="da"),
        app_commands.Choice(name="German", value="de"),
        app_commands.Choice(name="Greek", value="el"),
        app_commands.Choice(name="English", value="en"),
        app_commands.Choice(name="Spanish", value="es"),
        app_commands.Choice(name="Estonian", value="et"),
        app_commands.Choice(name="Finnish", value="fi"),
        app_commands.Choice(name="French", value="fr"),
        app_commands.Choice(name="Irish", value="ga"),
        app_commands.Choice(name="Croatian", value="hr"),
        app_commands.Choice(name="Hungarian", value="hu"),
        app_commands.Choice(name="Italian", value="it"),
        app_commands.Choice(name="Lithuanian", value="lt"),
        app_commands.Choice(name="Latvian", value="lv"),
        app_commands.Choice(name="Maltese", value="mt"),
        app_commands.Choice(name="Dutch", value="nl"),
        app_commands.Choice(name="Polish", value="pl"),
        app_commands.Choice(name="Portuguese", value="pt"),
        app_commands.Choice(name="Romanian", value="ro"),
        app_commands.Choice(name="Slovak", value="sk"),
        app_commands.Choice(name="Slovene", value="sl"),
        app_commands.Choice(name="Swedish", value="sv"),
    ])
    async def lyrics(self, interaction: discord.Interaction, artist: str = None, song: str = None, language: app_commands.Choice[str] = None):
        await interaction.response.defer()
        if not artist or not song:
            member = interaction.guild.get_member(interaction.user.id)
            if not member:
                member = await interaction.guild.fetch_member(interaction.user.id)
            act_artist, act_song = await self.get_artist_song_from_presence(member)
            if act_artist and act_song:
                artist = artist or act_artist
                song = song or act_song
            else:
                await interaction.followup.send("No artist or song provided and couldn't find it from your current activity.")
                return

        lyrics = await self.fetch_lyrics(artist, song)
        if not lyrics:
            await interaction.followup.send(f"Could not find lyrics for **{artist} - {song}**")
            return

        if language:
            translated = await self.translate_text(lyrics, language.value)
            if translated:
                lyrics = translated

        if len(lyrics) > 1900:
            lyrics = lyrics[:1900] + "\n\n[...lyrics truncated...]"

        embed = discord.Embed(
            title=f"{artist} - {song}",
            description=lyrics,
            color=discord.Color.blue()
        )
        embed.set_footer(text=f"Requested by {interaction.user}", icon_url=interaction.user.display_avatar.url)
        await interaction.followup.send(embed=embed)

    async def get_artist_song_from_presence(self, member: discord.Member):
        for activity in member.activities:
            if isinstance(activity, discord.Spotify):
                return activity.artist, activity.title
        return None, None


    async def fetch_lyrics(self, artist, song):
        artist_q = artist.replace(' ', '+').lower()
        song_q = song.replace(' ', '+').lower()

        url = f"https://lrclib.net/api/get?artist_name={artist_q}&track_name={song_q}"
        print(url)

        async with aiohttp.ClientSession() as session:
            try:
                async with session.get(url) as resp:
                    if resp.status != 200:
                        return None
                    data = await resp.json()
                    return data.get('plainLyrics')
            except Exception:
                return None

    async def translate_text(self, text: str, target_lang: str) -> str | None:
        translate_url = "https://translate.googleapis.com/translate_a/single"
        params = {
            "client": "gtx",
            "sl": "auto",
            "tl": target_lang,
            "dt": "t",
            "q": text
        }
        async with aiohttp.ClientSession() as session:
            try:
                async with session.get(translate_url, params=params) as resp:
                    if resp.status != 200:
                        return None
                    result = await resp.json()
                    translated_chunks = [item[0] for item in result[0] if item[0]]
                    return ''.join(translated_chunks)
            except Exception:
                return None

async def setup(bot):
    await bot.add_cog(Lyrics(bot))