import asyncio
import aiohttp
import discord
import requests
from discord import ui
from discord.ext import commands
from redbot.core import Config, app_commands, commands


class Pterodactyl(commands.Cog):
    """Pterodactyl allows you to manage your Pterodactyl Panel from Discord."""

    def __init__(self, bot):
        self.bot = bot
        self.config = Config.get_conf(self, identifier=457581387213637448123567)
        self.config.register_guild(
            base_url=None,
            api_key=None,
            server_id=None,
            startup_jar=None,
            startup_arguments=None
        )
        self.session: aiohttp.ClientSession = None

    async def cog_load(self):
        self.session = aiohttp.ClientSession()

    async def cog_unload(self):
       await self.session.close()

    async def get_headers(self, guild: discord.Guild):
        """Returns the headers used to access the Pterodactyl API."""
        if await self.config.guild(guild).api_key() is None:
            raise LookupError("API Key not set.")
        headers = {
            "Authorization": f"Bearer {await self.config.guild(guild).api_key()}",
            "Content-Type": "application/json",
            "Accept": "application/json"
        }
        return headers

    async def get_url(self, guild, endpoint = None):
        """Returns the base url for the server's API, or the url for a specific API endpoint if one is provided."""
        if await self.config.guild(guild).server_id() is None:
            raise LookupError("Server ID not set.")
        elif await self.config.guild(guild).base_url() is None:
            raise LookupError("Base URL not set.")
        base_url = await self.config.guild(guild).base_url()
        server_id = await self.config.guild(guild).server_id()
        url = f"https://{base_url}/api/client/servers/{server_id}"
        if endpoint:
            url += '/' + endpoint
        return url

    async def put(self, url: str, headers: dict, data: dict):
        """Sends an asyncio PUT request to the specified URL with the specified headers and data."""
        async with aiohttp.ClientSession() as session:
            async with session.put(url, headers=headers, json=data) as response:
                return response

    @app_commands.command(name="update", description="Updates the server.")
    @app_commands.guild_only()
    async def update(self, interaction: discord.Interaction):
        """Updates the server using the arguments provided in the server's configuration."""
        session = self.session
        await interaction.response.defer(ephemeral=True, thinking=True)
        interaction_message = await interaction.original_response()
        if await self.config.guild(interaction.guild).startup_jar() is None:
            await interaction_message.edit(f"Something went wrong.\nError: `Startup jar not set.`", ephemeral=True)
            raise LookupError("Startup jar not set.")
        elif await self.config.guild(interaction.guild).startup_arguments() is None:
            await interaction_message.edit(f"Something went wrong.\nError: `Startup arguments not set.`", ephemeral=True)
            raise LookupError("Startup arguments not set.")
        else:
            startup_jar = await self.config.guild(interaction.guild).startup_jar()
            startup_commands = await self.config.guild(interaction.guild).startup_arguments()
        try:
            headers = await self.get_headers(interaction.guild)
        except LookupError as e:
            await interaction_message.edit(f"Something went wrong.\nError: `{e}`", ephemeral=True)
            return
        async with session.get(await self.get_url(interaction.guild, "resources"), headers=headers) as response:
            response_dict = await response.json()
        async with session.get(await self.get_url(interaction.guild, "startup"), headers=headers) as response:
            list_var_response_dict = await response.json()
        updater_startup_vars = [
            {
                "key": "FLAGS",
                "value": startup_commands
            },
            {
                "key": "SERVER_JARFILE",
                "value": startup_jar
            }
        ]
        old_startup_vars = [
            {
                "key": "FLAGS",
                "value": list_var_response_dict['data'][4]['attributes']['server_value']
            },
            {
                "key": "SERVER_JARFILE",
                "value": list_var_response_dict['data'][0]['attributes']['server_value']
            }
        ]
        if response_dict['attributes']['current_state'] == "offline":
            for data in updater_startup_vars:
                await session.put(await self.get_url(interaction.guild, "startup/variable"), headers=headers, data=data)
            await session.post(await self.get_url(interaction.guild, "power"), headers=headers, json={"signal": "start"})
            await interaction_message.edit(content="Updater started...")
            await asyncio.sleep(1)
            while True:
                async with session.get(await self.get_url(interaction.guild, "resources"), headers=headers) as response:
                    response_dict = await response.json()
                    if response_dict['attributes']['current_state'] == "offline":
                        await interaction_message.edit(content="Updater finished.")
                        break
                    else:
                        await asyncio.sleep(1)
                        continue
            for data in old_startup_vars:
                await session.put(await self.get_url(interaction.guild, "startup/variable"), headers=headers, data=data)
            await interaction_message.edit(content="Updater finished.\nUpdate process completed!")
        elif response_dict['attributes']['current_state'] == "running" or response_dict['attributes']['current_state'] == "starting":
            passed_info = {
                "headers": headers,
                "updater_startup_vars": updater_startup_vars,
                "old_startup_vars": old_startup_vars,
                "interaction": interaction,
                "guild": interaction.guild,
            }
            await interaction_message.edit(content="The server is already running! Are you sure you'd like to stop the server for updates?", view=self.UpdateButtons(timeout=180, passed_info=passed_info, session=session))

    power = app_commands.Group(name='power', description="Controls the server's power state.")

    @power.command(name='start', description="Starts the server.")
    @app_commands.guild_only()
    async def start(self, interaction: discord.Interaction):
        """Starts the server."""
        await interaction.response.defer(ephemeral=True, thinking=True)
        interaction_message = await interaction.original_response()
        headers = await self.get_headers(interaction.guild)
        response = requests.get(await self.get_url(interaction.guild, "resources"), headers=headers)
        requests_json = response.json()
        current_status = requests_json['attributes']['current_state']
        if current_status == "offline":
            passed_info = {
                "headers": headers,
                "interaction": interaction,
                "guild": interaction.guild,
                "signal": "start",
                "target_signal": "running",
                "message": "Server starting...",
                "completed_message": "Server started!"
            }
            await interaction_message.edit(content="Are you sure you'd like to start the server?", view=self.PowerButtons(timeout=180, passed_info=passed_info))
        else:
            message = await interaction_message.edit(content="The server is already running!")
            await message.delete(delay=3)

    @power.command(name='restart', description="Restarts the server.")
    @app_commands.guild_only()
    async def restart(self, interaction: discord.Interaction):
        """Restarts the server."""
        await interaction.response.defer(ephemeral=True, thinking=True)
        interaction_message = await interaction.original_response()
        headers = await self.get_headers(interaction.guild)
        response = requests.get(await self.get_url(interaction.guild, "resources"), headers=headers)
        requests_json = response.json()
        current_status = requests_json['attributes']['current_state']
        if current_status == "running":
            passed_info = {
                "headers": headers,
                "interaction": interaction,
                "guild": interaction.guild,
                "signal": "restart",
                "target_signal": "running",
                "message": "Server restarting...",
                "completed_message": "Server restarted!"
            }
            await interaction_message.edit(content="Are you sure you'd like to restart the server?", view=self.PowerButtons(timeout=180, passed_info=passed_info))
        elif current_status == "offline":
            message = await interaction_message.edit(content="The server is offline!")
            await message.delete(delay=3)
        elif current_status == "starting":
            message = await interaction_message.edit(content="The server is already starting!")
            await message.delete(delay=3)

    @power.command(name='stop', description="Stops the server.")
    @app_commands.guild_only()
    async def stop(self, interaction: discord.Interaction):
        """Stops the server."""
        await interaction.response.defer(ephemeral=True, thinking=True)
        interaction_message = await interaction.original_response()
        headers = await self.get_headers(interaction.guild)
        response = requests.get(await self.get_url(interaction.guild, "resources"), headers=headers)
        requests_json = response.json()
        current_status = requests_json['attributes']['current_state']
        if current_status == "running" or current_status == "starting":
            passed_info = {
                "headers": headers,
                "interaction": interaction,
                "guild": interaction.guild,
                "signal": "stop",
                "target_signal": "offline",
                "message": "Server stopping...",
                "completed_message": "Server stopped!"
            }
            await interaction_message.edit(content="Are you sure you'd like to stop the server?", view=self.PowerButtons(timeout=180, passed_info=passed_info))
        elif current_status == "offline":
            message = await interaction_message.edit(content="The server is already offline!")
            await message.delete(delay=3)

    class UpdateButtons(ui.View):
        def __init__(self, timeout, passed_info, session: aiohttp.ClientSession):
            super().__init__()
            self.passed_info = passed_info
            self.session = session
            self.config = Config.get_conf(None, cog_name='Pterodactyl', identifier=457581387213637448123567)

        @ui.button(label="Yes", style=discord.ButtonStyle.success)
        async def yes_button(self, button:ui.Button, interaction:discord.Interaction):
            session = self.session
            await session.post(await Pterodactyl.get_url(self, self.passed_info['guild'], "power"), headers=self.passed_info['headers'], json={"signal": "stop"})
            await self.passed_info['interaction'].edit_original_response(content="Server stopping...", view=None)
            while True:
                async with session.get(await Pterodactyl.get_url(self, self.passed_info['guild'], "resources"), headers=self.passed_info['headers']) as response:
                    response_dict = await response.json()
                    if response_dict['attributes']['current_state'] == "offline":
                        await self.passed_info['interaction'].edit_original_response(content="\nServer stopped!")
                        break
                    else:
                        await asyncio.sleep(2)
                        continue
            for data in self.passed_info['updater_startup_vars']:
                await session.put(self, url=await Pterodactyl.get_url(self, self.passed_info['guild'], "startup/variable"), headers=self.passed_info['headers'], data=data)
            await session.post(url=await Pterodactyl.get_url(self, self.passed_info['guild'], "power"), headers=self.passed_info['headers'], json={"signal": "start"})
            await self.passed_info['interaction'].edit_original_response(content="Updater started...")
            await asyncio.sleep(2)
            while True:
                async with session.get(await Pterodactyl.get_url(self, self.passed_info['guild'], "resources"), headers=self.passed_info['headers']) as response:
                    response_dict = await response.json()
                    if response_dict['attributes']['current_state'] == "offline":
                        await self.passed_info['interaction'].edit_original_response(content="Updater finished!")
                        break
                    else:
                        await asyncio.sleep(1)
                        continue
            for data in self.passed_info['old_startup_vars']:
                await session.put(self, await Pterodactyl.get_url(self, self.passed_info['guild'], "startup/variable"), headers=self.passed_info['headers'], data=data)
            await asyncio.sleep(2)
            await session.post(url=await Pterodactyl.get_url(self, self.passed_info['guild'], "power"), headers=self.passed_info['headers'], json={"signal": "start"})
            await self.passed_info['interaction'].edit_original_response(content="Server starting...")
            while True:
                async with session.get(await Pterodactyl.get_url(self, self.passed_info['guild'], "resources"), headers=self.passed_info['headers']) as response:
                    response_dict = await response.json()
                    if response_dict['attributes']['current_state'] == "running":
                        await self.passed_info['interaction'].edit_original_response(content="Server started!\nUpdate process completed!")
                        break
                    else:
                        await asyncio.sleep(1)
                        continue

        @ui.button(label="No", style=discord.ButtonStyle.danger)
        async def no_button(self, button:ui.Button, interaction:discord.Interaction):
            message = await self.passed_info['interaction'].edit_original_response(content=f"Command cancelled.", view=None)
            await message.delete(delay=3)

    class PowerButtons(ui.View):
        def __init__(self, timeout, passed_info):
            super().__init__()
            self.passed_info = passed_info
            self.config = Config.get_conf(None, cog_name='Pterodactyl', identifier=457581387213637448123567)

        @ui.button(label="Yes", style=discord.ButtonStyle.success)
        async def yes_button(self, button:ui.Button, interaction:discord.Interaction):
            headers = self.passed_info['headers']
            requests.post(await Pterodactyl.get_url(self, self.passed_info['guild'], "power"), headers=headers, json={"signal": self.passed_info['signal']})
            message = await self.passed_info['interaction'].edit_original_response(content=self.passed_info['message'], view=None)
            while True:
                async with aiohttp.ClientSession() as session:
                    async with session.get(await Pterodactyl.get_url(self, self.passed_info['guild'], "resources"), headers=headers) as response:
                        response_dict = await response.json()
                        if response_dict['attributes']['current_state'] == self.passed_info['target_signal']:
                            await message.edit(content=self.passed_info['completed_message'])
                            break
                        else:
                            await asyncio.sleep(1)
                            continue

        @ui.button(label="No", style=discord.ButtonStyle.danger)
        async def no_button(self, button:ui.Button, interaction:discord.Interaction):
            message = await self.passed_info['interaction'].edit_original_response(content=f"Command cancelled.", view=None)
            await message.delete(delay=3)


    get_group = app_commands.Group(name='get', description="Retrieves information from the Pterodactyl API.")

    @get_group.command(name='url', description="Retrieves the URL for the specified endpoint.")
    @app_commands.guild_only()
    async def retrieve_url(self, interaction: discord.Interaction, endpoint: str = None):
        """Retrieves the URL for the specified endpoint."""
        try:
            if endpoint:
                url = await self.get_url(interaction.guild, endpoint)
            else:
                url = await self.get_url(interaction.guild)
        except LookupError as e:
            await interaction.response.send_message(f"Something went wrong.\nError: `{e}`", ephemeral=True)
            return
        await interaction.response.send_message(url, ephemeral=True)

    configure = app_commands.Group(name="config", description="Configures the Pterodactyl cog.")

    @configure.command(name="api", description="Sets the information used to access the Pterodactyl API.")
    @app_commands.guild_only()
    async def configure_api(self, interaction: discord.Interaction):
        """Sets the information used to access the Pterdoactyl API."""
        await interaction.response.send_modal(self.APIConfigModal(self.config))

    @configure.command(name="update", description="Sets the startup arguments for the update command.")
    @app_commands.guild_only()
    async def configure_update(self, interaction: discord.Interaction):
        """Sets the startup arguments for the update command."""
        await interaction.response.send_modal(self.StartupConfigModal(self.config))

    class APIConfigModal(discord.ui.Modal, title="Pterodactyl Manager Configuration"):
        def __init__(self, config):
            super().__init__()
            self.config = config
        base_url = discord.ui.TextInput(
            label="Base URL",
            placeholder="Input your Pterodactyl Panel's Base URL here, without HTTPS or HTTP.",
            style=discord.TextStyle.paragraph,
            required=False,
            max_length=300
        )
        api_key = discord.ui.TextInput(
            label="API Key",
            placeholder="Input your Pterodactyl Client API Key here.",
            style=discord.TextStyle.short,
            required=False,
            max_length=300
        )
        server_id = discord.ui.TextInput(
            label="Server ID",
            placeholder="Input your Pterodactyl server's Server ID here.",
            style=discord.TextStyle.short,
            required=False,
            max_length=300
        )

        async def on_submit(self, interaction: discord.Interaction):
            message = ""
            if self.base_url.value != "":
                await self.config.guild(interaction.guild).base_url.set(self.base_url.value)
                message += f"- Base URL set to\n  - `{self.base_url.value}`\n"
            if self.api_key.value != "":
                await self.config.guild(interaction.guild).api_key.set(self.api_key.value)
                trimmed_api_key = self.api_key.value[:16]
                message += f"- API Key set to\n  - `{trimmed_api_key}` - Trimmed for security\n"
            if self.server_id.value != "":
                await self.config.guild(interaction.guild).server_id.set(self.server_id.value)
                message += f"- Server ID set to\n  - `{self.server_id.value}`\n"
            if message == "":
                trimmed_api_key = str(await self.config.guild(interaction.guild).api_key())[:16]
                send = f"No changes were made.\nCurrent configuration:\n- Base URL:\n  - `{await self.config.guild(interaction.guild).base_url()}`\n- API Key:\n  - `{trimmed_api_key}` - Trimmed for security\n- Server ID:\n  - `{await self.config.guild(interaction.guild).server_id()}`"
            else:
                send = f"Configuration changed:\n{message}"
            await interaction.response.send_message(send, ephemeral=True)

    class StartupConfigModal(discord.ui.Modal, title="Pterodactyl Manager Configuration"):
        def __init__(self, config):
            super().__init__()
            self.config = config
        startup_jar = discord.ui.TextInput(
            label="Startup .jar",
            placeholder="Input the name of your updater .jar here.",
            style=discord.TextStyle.short,
            required=False,
            max_length=300
        )
        startup_arguments = discord.ui.TextInput(
            label="Startup Arguments",
            placeholder="Input your startup arguments here.\nExample:\n-g -s server https://repository.link/here",
            style=discord.TextStyle.paragraph,
            required=False,
            max_length=1000
        )

        async def on_submit(self, interaction: discord.Interaction):
            message = ""
            if self.startup_jar.value != "":
                await self.config.guild(interaction.guild).startup_jar.set(self.startup_jar.value)
                message += f"- Startup jar set to\n  - `{self.startup_jar.value}`\n"
            if self.startup_arguments.value != "":
                await self.config.guild(interaction.guild).startup_arguments.set(self.startup_arguments.value)
                message += f"- Startup arguments set to:\n```{self.startup_arguments.value}```\n"
            if message == "":
                send = f"No changes were made.\nCurrent configuration:\n- Startup jar: `{await self.config.guild(interaction.guild).startup_jar()}`\n- Startup arguments:\n```{await self.config.guild(interaction.guild).startup_arguments()}```"
            else:
                send = f"Configuration changed:\n{message}"
            await interaction.response.send_message(send, ephemeral=True)