import discord
from discord.ext import commands
from discord import app_commands
from datetime import datetime, timezone, timedelta

# Windows'ta tzdata eksik olabilir. Önce zoneinfo ile dene, yoksa pytz, yoksa UTC offset map'i
try:
    from zoneinfo import ZoneInfo
    _ZONEINFO_OK = True
except Exception:
    _ZONEINFO_OK = False

try:
    import pytz
    _PYTZ_OK = True
except Exception:
    _PYTZ_OK = False

CYBER_BLUE = discord.Color.from_rgb(52, 152, 219)
CYBER_GOLD = discord.Color.from_rgb(241, 196, 15)

# Yaygın şehirler ve timezone ID'leri
SEHIR_ZAMAN_DILIMI = {
    "istanbul": "Europe/Istanbul",
    "new york": "America/New_York",
    "los angeles": "America/Los_Angeles",
    "london": "Europe/London",
    "paris": "Europe/Paris",
    "berlin": "Europe/Berlin",
    "moscow": "Europe/Moscow",
    "dubai": "Asia/Dubai",
    "tokyo": "Asia/Tokyo",
    "seoul": "Asia/Seoul",
    "shanghai": "Asia/Shanghai",
    "singapore": "Asia/Singapore",
    "sydney": "Australia/Sydney",
    "mumbai": "Asia/Kolkata",
    "delhi": "Asia/Kolkata",
    "cairo": "Africa/Cairo",
    "toronto": "America/Toronto",
    "mexico city": "America/Mexico_City",
    "sao paulo": "America/Sao_Paulo",
    "amsterdam": "Europe/Amsterdam",
    "madrid": "Europe/Madrid",
    "rome": "Europe/Rome",
    "stockholm": "Europe/Stockholm",
    "utc": "UTC",
    "ankara": "Europe/Istanbul",
    "izmir": "Europe/Istanbul",
    "baku": "Asia/Baku",
    "riyadh": "Asia/Riyadh",
    "los santos": "America/Los_Angeles",
    "chicago": "America/Chicago",
    "denver": "America/Denver",
    "phoenix": "America/Phoenix",
    "hawaii": "Pacific/Honolulu",
    "auckland": "Pacific/Auckland",
    "johannesburg": "Africa/Johannesburg",
    "bangkok": "Asia/Bangkok",
    "jakarta": "Asia/Jakarta",
    "manila": "Asia/Manila",
    "hong kong": "Asia/Hong_Kong",
    "tel aviv": "Asia/Jerusalem",
    "kiev": "Europe/Kyiv",
    "kyiv": "Europe/Kyiv",
}

# UTC ofsetleri (saat cinsinden) — ZoneInfo/pytz yoksa yedek olarak
UTC_OFFSETS = {
    "istanbul": 3, "ankara": 3, "izmir": 3, "baku": 4,
    "london": 0, "paris": 1, "berlin": 1, "amsterdam": 1, "madrid": 1,
    "rome": 1, "stockholm": 1, "moscow": 3, "kyiv": 2, "kiev": 2,
    "dubai": 4, "riyadh": 3, "cairo": 2, "johannesburg": 2,
    "new york": -5, "toronto": -5, "chicago": -6, "mexico city": -6,
    "denver": -7, "phoenix": -7, "los angeles": -8,
    "sao paulo": -3,
    "mumbai": 5, "delhi": 5, "bangkok": 7, "jakarta": 7,
    "hong kong": 8, "shanghai": 8, "singapore": 8, "manila": 8,
    "tokyo": 9, "seoul": 9,
    "sydney": 11, "auckland": 13,
    "hawaii": -10,
    "tel aviv": 2,
    "utc": 0,
}


def _get_now_in_tz(tz_id: str, sehir_lower: str):
    """Verilen timezone ID'sine göre şimdiki zamanı döndürür. Yedek olarak UTC offset kullanır."""
    if _ZONEINFO_OK:
        try:
            tz = ZoneInfo(tz_id)
            return datetime.now(tz)
        except Exception:
            pass
    if _PYTZ_OK:
        try:
            tz = pytz.timezone(tz_id)
            return datetime.now(tz)
        except Exception:
            pass
    # Yedek: UTC ofseti ile
    offset = UTC_OFFSETS.get(sehir_lower, 0)
    return datetime.now(timezone.utc) + timedelta(hours=offset)


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

    @commands.command(name="saat", description="Belirli bir şehrin şu anki saatini gösterir.")
    async def saat(self, ctx: commands.Context, *, sehir: str):

        sehir_lower = sehir.lower().strip()
        tz_id = SEHIR_ZAMAN_DILIMI.get(sehir_lower)

        if not tz_id:
            # Yıldız eşleştirme: kısmi eşleşme
            for key, val in SEHIR_ZAMAN_DILIMI.items():
                if sehir_lower in key or key in sehir_lower:
                    tz_id = val
                    sehir_lower = key
                    break

        if not tz_id:
            await ctx.send(
                f"❌ `{sehir}` için zaman dilimi bulunamadı.\n"
                f"Örnek şehirler: `istanbul`, `london`, `tokyo`, `new york`, `dubai`, `moscow`, `sydney`, `los angeles`",
                ephemeral=True
            )
            return

        try:
            now = _get_now_in_tz(tz_id, sehir_lower)
            tarih_str = now.strftime("%d.%m.%Y")
            saat_str = now.strftime("%H:%M:%S")
            gun_str = ["Pzt", "Sal", "Çar", "Per", "Cum", "Cmt", "Paz"][now.weekday()]

            embed = discord.Embed(
                title=f"🕐 {sehir_lower.title()}",
                color=CYBER_GOLD,
                timestamp=datetime.now()
            )
            embed.add_field(name="🕒 Saat", value=f"**{saat_str}**", inline=True)
            embed.add_field(name="📅 Gün", value=f"**{gun_str}**", inline=True)
            embed.add_field(name="📆 Tarih", value=f"**{tarih_str}**", inline=True)
            embed.add_field(name="Zaman Dilimi", value=f"`{tz_id}`", inline=False)
            embed.set_footer(text="ArazAI Saat Sorgusu")
            await ctx.send(embed=embed)

        except Exception as e:
            await ctx.send(f"❌ Hata: {e}", ephemeral=True)

    @commands.command(name="saat-karşılaştır", description="Birden fazla şehrin şimdiki saatlerini karşılaştırır.")
    async def saat_karsilastir(self, ctx: commands.Context, *, sehirler: str):

        sehir_listesi = [s.strip() for s in sehirler.split("|") if s.strip()]
        if len(sehir_listesi) < 2:
            await ctx.send("❌ En az 2 şehir girin. (örn: istanbul | tokyo | london)", ephemeral=True)
            return

        embed = discord.Embed(title="🕐 Saat Karşılaştırma", color=CYBER_GOLD, timestamp=datetime.now())
        embed.set_footer(text="ArazAI Saat Sorgusu")

        for sehir in sehir_listesi[:10]:
            sehir_lower = sehir.lower()
            tz_id = SEHIR_ZAMAN_DILIMI.get(sehir_lower)
            if not tz_id:
                embed.add_field(name=f"❌ {sehir}", value="Bulunamadı", inline=True)
                continue
            try:
                now = _get_now_in_tz(tz_id, sehir_lower)
                saat_str = now.strftime("%H:%M")
                gun_str = ["Pzt", "Sal", "Çar", "Per", "Cum", "Cmt", "Paz"][now.weekday()]
                embed.add_field(name=f"📍 {sehir.title()}", value=f"**{saat_str}** ({gun_str})", inline=True)
            except:
                embed.add_field(name=f"❌ {sehir}", value="Hata", inline=True)

        await ctx.send(embed=embed)


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