from __future__ import annotations

import asyncio
import datetime
import json
import logging
import os
import subprocess
import sys
from collections.abc import Awaitable, Callable
from pathlib import Path

import discord
from discord import app_commands

import strings as S


def register_ops_admin_commands(
    tree: app_commands.CommandTree,
    bot: discord.Client,
    log: logging.Logger,
    process,
    start_time: datetime.datetime,
    log_dir: Path,
    guild_obj: discord.Object,
    restart_file: Path,
    get_member_cache_size: Callable[[], int],
    get_paused: Callable[[], bool],
    set_paused: Callable[[bool], None],
    count_economy_users: Callable[[], Awaitable[int]],
) -> None:
    @tree.command(name="status", description=S.CMD["status"])
    @app_commands.guild_only()
    @app_commands.default_permissions(manage_guild=True)
    async def cmd_status(interaction: discord.Interaction):
        mem = process.memory_info()
        cpu = process.cpu_percent(interval=0.1)
        uptime = datetime.datetime.now() - start_time
        hours, rem = divmod(int(uptime.total_seconds()), 3600)
        minutes, seconds = divmod(rem, 60)
        tasks_count = len(asyncio.all_tasks())
        latency_ms = round(bot.latency * 1000, 1)
        cache_size = get_member_cache_size()
        user_count = await count_economy_users()

        embed = discord.Embed(title=S.STATUS_UI["title"], color=0x57F287)
        embed.add_field(
            name=S.STATUS_UI["uptime_field"],
            value=S.STATUS_UI["uptime_val"].format(hours=hours, minutes=minutes, seconds=seconds),
            inline=True,
        )
        embed.add_field(
            name=S.STATUS_UI["latency_field"],
            value=S.STATUS_UI["latency_val"].format(ms=latency_ms),
            inline=True,
        )
        embed.add_field(
            name=S.STATUS_UI["ram_field"],
            value=S.STATUS_UI["ram_val"].format(mb=f"{mem.rss / 1024**2:.1f}"),
            inline=True,
        )
        embed.add_field(
            name=S.STATUS_UI["cpu_field"],
            value=S.STATUS_UI["cpu_val"].format(percent=f"{cpu:.1f}"),
            inline=True,
        )
        embed.add_field(
            name=S.STATUS_UI["tasks_field"],
            value=str(tasks_count),
            inline=True,
        )
        embed.add_field(
            name=S.STATUS_UI["eco_players_field"],
            value=str(user_count),
            inline=True,
        )
        embed.add_field(
            name=S.STATUS_UI["members_cache_field"],
            value=str(cache_size),
            inline=True,
        )

        log_lines = [
            S.STATUS_UI["log_line"].format(name=p.name, size_kb=f"{p.stat().st_size / 1024:.1f}")
            for p in sorted(log_dir.glob("*.log*"))
            if p.is_file()
        ]
        embed.add_field(
            name=S.STATUS_UI["log_files_field"],
            value="\n".join(log_lines) or S.STATUS_UI["none"],
            inline=False,
        )
        await interaction.response.send_message(embed=embed, ephemeral=True)

    @tree.command(name="sync", description=S.CMD["sync"])
    @app_commands.guild_only()
    @app_commands.default_permissions(manage_guild=True)
    async def cmd_sync(interaction: discord.Interaction):
        await interaction.response.defer(ephemeral=True)
        tree.copy_global_to(guild=guild_obj)
        await tree.sync(guild=guild_obj)
        tree.clear_commands(guild=None)
        await tree.sync()
        await interaction.followup.send(S.MSG_SYNC_DONE, ephemeral=True)
        log.info("/sync triggered by %s", interaction.user)

    @tree.command(name="restart", description=S.CMD["restart"])
    @app_commands.guild_only()
    @app_commands.default_permissions(manage_guild=True)
    async def cmd_restart(interaction: discord.Interaction):
        restart_file.write_text(json.dumps({"channel_id": interaction.channel_id}), encoding="utf-8")
        await interaction.response.send_message(S.MSG_RESTARTING, ephemeral=True)
        log.info("/restart triggered by %s", interaction.user)
        subprocess.Popen([sys.executable] + sys.argv, cwd=os.getcwd())
        await bot.close()

    @tree.command(name="shutdown", description=S.CMD["shutdown"])
    @app_commands.guild_only()
    @app_commands.default_permissions(manage_guild=True)
    async def cmd_shutdown(interaction: discord.Interaction):
        await interaction.response.send_message(S.MSG_SHUTTING_DOWN, ephemeral=True)
        log.info("/shutdown triggered by %s", interaction.user)
        await bot.close()

    @tree.command(name="pause", description=S.CMD["pause"])
    @app_commands.guild_only()
    @app_commands.default_permissions(manage_guild=True)
    async def cmd_pause(interaction: discord.Interaction):
        paused = not get_paused()
        set_paused(paused)
        msg = S.MSG_PAUSED if paused else S.MSG_UNPAUSED
        log.info("/pause toggled → %s by %s", "PAUSED" if paused else "UNPAUSED", interaction.user)
        await interaction.response.send_message(msg, ephemeral=True)