from __future__ import annotations

import datetime
import json
import os
import platform
import tempfile
from functools import lru_cache
from pathlib import Path
from typing import TYPE_CHECKING, Any
from zoneinfo import ZoneInfo, ZoneInfoNotFoundError

import discord
import pytz
import sentry_sdk
from apscheduler import events
from apscheduler.events import EVENT_JOB_ERROR, EVENT_JOB_MISSED, JobExecutionEvent
from apscheduler.job import Job
from apscheduler.jobstores.sqlalchemy import SQLAlchemyJobStore
from apscheduler.schedulers.asyncio import AsyncIOScheduler
from discord.abc import PrivateChannel
from discord_webhook import DiscordWebhook
from dotenv import load_dotenv
from loguru import logger

from discord_reminder_bot.misc import calculate
from discord_reminder_bot.parser import parse_time

if TYPE_CHECKING:
    from apscheduler.job import Job
    from discord.guild import GuildChannel
    from discord.interactions import InteractionChannel
    from requests import Response


load_dotenv()

default_sentry_dsn: str = "https://c4c61a52838be9b5042144420fba5aaa@o4505228040339456.ingest.us.sentry.io/4508707268984832"
sentry_sdk.init(
    dsn=os.getenv("SENTRY_DSN", default_sentry_dsn),
    environment=platform.node() or "Unknown",
    traces_sample_rate=1.0,
    send_default_pii=True,
)


@lru_cache(maxsize=1)
def get_scheduler() -> AsyncIOScheduler:
    """Return the scheduler instance.

    Raises:
        ValueError: If the timezone is missing or invalid.

    Returns:
        AsyncIOScheduler: The scheduler instance.
    """
    config_timezone: str | None = os.getenv("TIMEZONE")
    if not config_timezone:
        msg = "Missing timezone. Please set the TIMEZONE environment variable."
        raise ValueError(msg)

    # Test if the timezone is valid
    try:
        ZoneInfo(config_timezone)
    except (ZoneInfoNotFoundError, ModuleNotFoundError) as e:
        msg: str = f"Invalid timezone: {config_timezone}. Error: {e}"
        raise ValueError(msg) from e

    sqlite_location: str = os.getenv("SQLITE_LOCATION", default="/jobs.sqlite")
    logger.info(f"Using SQLite database at: {sqlite_location}")

    jobstores: dict[str, SQLAlchemyJobStore] = {"default": SQLAlchemyJobStore(url=f"sqlite://{sqlite_location}")}
    job_defaults: dict[str, bool] = {"coalesce": True}
    timezone = pytz.timezone(config_timezone)
    return AsyncIOScheduler(jobstores=jobstores, timezone=timezone, job_defaults=job_defaults)


scheduler: AsyncIOScheduler = get_scheduler()


def my_listener(event: JobExecutionEvent) -> None:
    """Listener for job events.

    Args:
        event: The event that occurred.
    """
    if event.code == events.EVENT_JOB_MISSED:
        scheduled_time: str = event.scheduled_run_time.strftime("%Y-%m-%d %H:%M:%S")
        msg: str = f"Job {event.job_id} was missed! Was scheduled at {scheduled_time}"
        send_webhook(message=msg)

    if event.exception:
        with sentry_sdk.push_scope() as scope:
            scope.set_extra("job_id", event.job_id)
            scope.set_extra("scheduled_run_time", event.scheduled_run_time.isoformat() if event.scheduled_run_time else "None")
            scope.set_extra("event_code", event.code)
            sentry_sdk.capture_exception(event.exception)

        send_webhook(f"discord-reminder-bot failed to send message to Discord\n{event}")


class RemindBotClient(discord.Client):
    """Custom client class for the bot."""

    def __init__(self, *, intents: discord.Intents) -> None:
        """Initialize the bot client.

        Args:
            intents: The intents to use.
        """
        super().__init__(intents=intents)
        self.tree = discord.app_commands.CommandTree(self)

    async def on_error(self, event_method: str, *args: list[Any], **kwargs: dict[str, Any]) -> None:
        """Log errors that occur in the bot."""
        # Log the error
        logger.exception(f"An error occurred in {event_method} with args: {args} and kwargs: {kwargs}")

        # Add context to Sentry
        with sentry_sdk.push_scope() as scope:
            # Add event details
            scope.set_tag("event_method", event_method)
            scope.set_extra("args", args)
            scope.set_extra("kwargs", kwargs)

            # Add bot state
            scope.set_tag("bot_user_id", self.user.id if self.user else "Unknown")
            scope.set_tag("bot_user_name", str(self.user) if self.user else "Unknown")
            scope.set_tag("bot_latency", self.latency)

            # If specific arguments are available, extract and add details
            if args:
                interaction = next((arg for arg in args if isinstance(arg, discord.Interaction)), None)
                if interaction:
                    scope.set_extra("interaction_id", interaction.id)
                    scope.set_extra("interaction_user", interaction.user.id)
                    scope.set_extra("interaction_user_tag", str(interaction.user))
                    scope.set_extra("interaction_command", interaction.command.name if interaction.command else None)
                    scope.set_extra("interaction_channel", str(interaction.channel))
                    scope.set_extra("interaction_guild", str(interaction.guild) if interaction.guild else None)

                    # Add Sentry tags for interaction details
                    scope.set_tag("interaction_id", interaction.id)
                    scope.set_tag("interaction_user_id", interaction.user.id)
                    scope.set_tag("interaction_user_tag", str(interaction.user))
                    scope.set_tag("interaction_command", interaction.command.name if interaction.command else "None")
                    scope.set_tag("interaction_channel_id", interaction.channel.id if interaction.channel else "None")
                    scope.set_tag("interaction_channel_name", str(interaction.channel))
                    scope.set_tag("interaction_guild_id", interaction.guild.id if interaction.guild else "None")
                    scope.set_tag("interaction_guild_name", str(interaction.guild) if interaction.guild else "None")

            # Add APScheduler context
            scope.set_extra("scheduler_jobs", [job.id for job in scheduler.get_jobs()])

            sentry_sdk.capture_exception()

    async def on_ready(self) -> None:
        """Log when the bot is ready."""
        logger.info(f"Logged in as {self.user} ({self.user.id if self.user else 'Unknown'})")

    async def setup_hook(self) -> None:
        """Setup the bot."""
        scheduler.start()
        scheduler.add_listener(my_listener, EVENT_JOB_MISSED | EVENT_JOB_ERROR)
        jobs: list[Job] = scheduler.get_jobs()
        if not jobs:
            logger.info("No jobs available.")
            return

        logger.info("Jobs available:")
        try:
            for job in jobs:
                msg: str = job.kwargs.get("message", "") if (job.kwargs and isinstance(job.kwargs, dict)) else ""
                time: str = "Paused"
                if hasattr(job, "next_run_time") and job.next_run_time and isinstance(job.next_run_time, datetime.datetime):
                    time = job.next_run_time.strftime("%Y-%m-%d %H:%M:%S")
                logger.info(f"\t{job.id}: {job.name} - {time} - {msg}")

        except (AttributeError, LookupError):
            logger.exception("Failed to loop through jobs")

        await self.tree.sync()


def generate_reminder_summary() -> list[str]:
    """Create a message with all the jobs.

    Returns:
        list[str]: A list of messages with all the jobs.
    """
    jobs: list[Job] = scheduler.get_jobs()
    msgs: list[str] = []

    if not jobs:
        return ["No scheduled jobs found in the database."]

    header = (
        "You can use the following commands to manage reminders:\n"
        "`/remind pause <job_id>` - Pause a reminder\n"
        "`/remind unpause <job_id>` - Unpause a reminder\n"
        "`/remind remove <job_id>` - Remove a reminder\n\n"
        "`/remind modify <job_id>` - Modify the time of a reminder\n\n"
        "List of all reminders:\n\n"
    )

    current_msg: str = header

    for job in jobs:
        # Build job-specific message
        job_msg: str = f"### {job.kwargs.get('message', '')}\n"
        job_msg += f"**id:** {job.id}\n"
        job_msg += f"**Job type:** {job.trigger}\n"
        job_msg += f"**Next run time:** {calculate(job)}\n\n"

        if job.kwargs.get("user_id"):
            job_msg += f"**User:** <@{job.kwargs.get('user_id')}>\n"
        if job.kwargs.get("channel_id"):
            job_msg += f"**Channel:** <#{job.kwargs.get('channel_id')}>\n"
        if job.kwargs.get("guild_id"):
            job_msg += f"**Guild:** {job.kwargs.get('guild_id')}\n"

        job_msg += "\n"  # Extra newline for separation

        # If adding this job exceeds 2000 characters, push the current message and start a new one.
        if len(current_msg) + len(job_msg) > 2000:
            msgs.append(current_msg)
            current_msg = job_msg
        else:
            current_msg += job_msg

    # Append any remaining content in current_msg.
    if current_msg:
        msgs.append(current_msg)

    return msgs


class RemindGroup(discord.app_commands.Group):
    """Group for remind commands."""

    def __init__(self) -> None:
        """Initialize the remind group."""
        super().__init__(name="remind", description="Group for remind commands")

    # /remind add
    @discord.app_commands.command(name="add", description="Add a new reminder")
    async def add(  # noqa: PLR0913, PLR0917, PLR6301
        self,
        interaction: discord.Interaction,
        message: str,
        time: str,
        channel: discord.TextChannel | None = None,
        user: discord.User | None = None,
        dm_and_current_channel: bool | None = None,  # noqa: FBT001
    ) -> None:
        """Add a new reminder.

        Args:
            interaction (discord.Interaction): The interaction object for the command.
            message (str): The content of the reminder.
            time (str): The time of the reminder. (e.g. Friday at 3 PM)
            channel (discord.TextChannel, optional): The channel to send the reminder to. Defaults to current channel.
            user (discord.User, optional): Send reminder as a DM to this user. Defaults to None.
            dm_and_current_channel (bool, optional): Send reminder as a DM to the user and in this channel. Defaults to False.
        """
        await interaction.response.defer()

        logger.info(f"New reminder from {interaction.user} ({interaction.user.id}) in {interaction.channel}")
        logger.info(f"Arguments: {locals()}")

        # Check if we have access to the specified channel or the current channel
        target_channel: InteractionChannel | discord.TextChannel | None = channel or interaction.channel
        if target_channel and interaction.guild and not target_channel.permissions_for(interaction.guild.me).send_messages:
            await interaction.followup.send(content=f"I don't have permission to send messages in <#{target_channel.id}>.", ephemeral=True)

        # Get the channel ID
        channel_id: int | None = channel.id if channel else (interaction.channel.id if interaction.channel else None)
        if not channel_id:
            await interaction.followup.send(content="Failed to get channel.", ephemeral=True)
            return

        # Ensure the guild is valid
        guild: discord.Guild | None = interaction.guild or None
        if not guild:
            await interaction.followup.send(content="Failed to get guild.", ephemeral=True)
            return

        dm_message: str = ""
        if user:
            parsed_time: datetime.datetime | None = parse_time(date_to_parse=time)
            if not parsed_time:
                await interaction.followup.send(content=f"Failed to parse time: {time}.", ephemeral=True)
                return

            user_reminder: Job = scheduler.add_job(
                func=send_to_user,
                trigger="date",
                run_date=parsed_time,
                kwargs={
                    "user_id": user.id,
                    "guild_id": guild.id,
                    "message": message,
                },
            )
            logger.info(f"User reminder job created: {user_reminder} for {user.id} at {parsed_time}")

            dm_message = f" and a DM to {user.display_name}"
            if not dm_and_current_channel:
                msg = (
                    f"Hello {interaction.user.display_name},\n"
                    f"I will send a DM to {user.display_name} at:\n"
                    f"First run in {calculate(user_reminder)} with the message:\n**{message}**."
                )
                await interaction.followup.send(content=msg)
                return

        # Create channel reminder job
        channel_job: Job = scheduler.add_job(
            func=send_to_discord,
            trigger="date",
            run_date=parse_time(date_to_parse=time),
            kwargs={
                "channel_id": channel_id,
                "message": message,
                "author_id": interaction.user.id,
            },
        )
        logger.info(f"Channel reminder job created: {channel_job} for {channel_id}")

        msg: str = (
            f"Hello {interaction.user.display_name},\n"
            f"I will notify you in <#{channel_id}>{dm_message}.\n"
            f"First run in {calculate(channel_job)} with the message:\n**{message}**."
        )

        await interaction.followup.send(content=msg)

    # /remind event
    @discord.app_commands.command(name="event", description="Add a new Discord event.")
    async def add_event(  # noqa: C901, PLR0913, PLR0917, PLR6301
        self,
        interaction: discord.Interaction,
        message: str,
        event_start: str,
        event_end: str,
        location: str,
        reason: str | None = None,
    ) -> None:
        """Add a new reminder.

        Args:
            interaction (discord.Interaction): The interaction object for the command.
            message (str): The description of the scheduled event.
            event_start (str): The scheduled start time of the scheduled event. Will get parsed.
            event_end (str, optional): The scheduled end time of the scheduled event. Will get parsed.
            reason (str, optional): The reason for creating this scheduled event. Shows up on the audit log.
            location (str, optional): The location of the scheduled event.
        """
        await interaction.response.defer()

        logger.info(f"New event from {interaction.user} ({interaction.user.id}) in {interaction.channel}")
        logger.info(f"Arguments: {locals()}")

        # Check if we have a valid guild
        guild: discord.Guild | None = interaction.guild
        if not guild:
            await interaction.followup.send(content="This command can only be used in a server.", ephemeral=True)
            return

        # Check if we have permission to create events
        if not guild.me.guild_permissions.create_events:
            await interaction.followup.send(content="I don't have permission to create events in this guild.", ephemeral=True)
            return

        event_start_time: datetime.datetime | None = parse_time(date_to_parse=event_start)
        event_end_time: datetime.datetime | None = parse_time(date_to_parse=event_end)

        if not event_start_time or not event_end_time:
            await interaction.followup.send(content=f"Failed to parse time: {event_start} or {event_end}.", ephemeral=True)
            return

        # If event_start_time is in the past, make it now + 5 seconds
        start_immediately: bool = False
        if event_start_time < datetime.datetime.now(event_start_time.tzinfo):
            start_immediately = True
            event_start_time = datetime.datetime.now(event_start_time.tzinfo) + datetime.timedelta(seconds=5)
            await interaction.followup.send(content="Event start time was in the past. Starting event in 5 seconds instead.")

        reason_msg: str = f"Event created by {interaction.user} ({interaction.user.id})."

        event: discord.ScheduledEvent = await guild.create_scheduled_event(
            name=message,
            start_time=event_start_time,
            entity_type=discord.EntityType.external,
            privacy_level=discord.PrivacyLevel.guild_only,
            end_time=event_end_time,
            reason=reason or reason_msg,
            location=location,
        )

        if start_immediately:
            await event.start()

        msg: str = f"Event '{event.name}' created successfully!\n"

        if event.start_time:
            msg += f"Start Time: <t:{int(event.start_time.timestamp())}:R>\n"

        if event.end_time:
            msg += f"End Time: <t:{int(event.end_time.timestamp())}:R>\n"

        if event.channel_id:
            msg += f"Channel: <#{event.channel_id}>\n"

        if event.location:
            msg += f"Location: {event.location}\n"

        if event.creator_id:
            msg += f"Created by: <@{event.creator_id}>"

        await interaction.followup.send(content=msg)

    # /remind list
    @discord.app_commands.command(name="list", description="List, pause, unpause, and remove reminders.")
    async def list(self, interaction: discord.Interaction) -> None:  # noqa: PLR6301
        """List all reminders with pagination and buttons for deleting and modifying jobs.

        Args:
            interaction(discord.Interaction): The interaction object for the command.
        """
        await interaction.response.defer()

        logger.info(f"Listing reminders for {interaction.user} ({interaction.user.id}) in {interaction.channel}")
        logger.info(f"Arguments: {locals()}")

        jobs: list[Job] = scheduler.get_jobs()
        if not jobs:
            await interaction.followup.send(content="No scheduled jobs found in the database.", ephemeral=True)
            return

        guild: discord.Guild | None = interaction.guild
        if not guild:
            await interaction.followup.send(content="Failed to get guild.", ephemeral=True)
            return

        # Only get jobs that are in the current guild
        jobs_in_guild: list[Job] = []
        list_of_channels_in_current_guild: list[int] = [c.id for c in guild.channels]
        for job in jobs:
            # If the job has guild_id and it's not the current guild, skip it
            if job.kwargs.get("guild_id") and job.kwargs.get("guild_id") != guild.id:
                logger.debug(f"Skipping job: {job.id} because it's not in the current guild.")
                continue

            # If the job has channel_id and it's not in the current guild, skip it
            if job.kwargs.get("channel_id") and job.kwargs.get("channel_id") not in list_of_channels_in_current_guild:
                logger.debug(f"Skipping job: {job.id} because it's not in the current guild.")
                continue

            jobs_in_guild.append(job)

        message: discord.InteractionMessage = await interaction.original_response()

        job_summary: list[str] = generate_reminder_summary()

        for i, msg in enumerate(job_summary):
            if i == 0:
                await message.edit(content=msg)
            else:
                await interaction.followup.send(content=msg)

    # /remind cron
    @discord.app_commands.command(name="cron", description="Create new cron job. Works like UNIX cron.")
    async def cron(  # noqa: PLR0913, PLR0917, PLR6301
        self,
        interaction: discord.Interaction,
        message: str,
        year: str | None = None,
        month: str | None = None,
        day: str | None = None,
        week: str | None = None,
        day_of_week: str | None = None,
        hour: str | None = None,
        minute: str | None = None,
        second: str | None = None,
        start_date: str | None = None,
        end_date: str | None = None,
        timezone: str | None = None,
        jitter: int | None = None,
        channel: discord.TextChannel | None = None,
        user: discord.User | None = None,
        dm_and_current_channel: bool | None = None,  # noqa: FBT001
    ) -> None:
        """Create a new cron job.

        Args that are None will be defaulted to *.

        Args:
            interaction (discord.Interaction): The interaction object for the command.
            message (str): The content of the reminder.
            year (str): 4-digit year. Defaults to *.
            month (str): Month (1-12). Defaults to *.
            day (str): Day of the month (1-31). Defaults to *.
            week (str): ISO Week of the year (1-53). Defaults to *.
            day_of_week (str): Number or name of weekday (0-6 or mon,tue,wed,thu,fri,sat,sun).
            hour (str): Hour (0-23). Defaults to *.
            minute (str): Minute (0-59). Defaults to *.
            second (str): Second (0-59). Defaults to *.
            start_date (str): Earliest possible date/time to trigger on (inclusive). Will get parsed.
            end_date (str): Latest possible date/time to trigger on (inclusive). Will get parsed.
            timezone (str): Time zone to use for the date/time calculations Defaults to scheduler timezone.
            jitter (int, optional): Delay the job execution by jitter seconds at most.
            channel (discord.TextChannel, optional): The channel to send the reminder to. Defaults to current channel.
            user (discord.User, optional): Send reminder as a DM to this user. Defaults to None.
            dm_and_current_channel (bool, optional): If user is provided, send reminder as a DM to the user and in this channel. Defaults to only the user.
        """  # noqa: E501
        await interaction.response.defer()

        # Log kwargs
        logger.info(f"New cron job from {interaction.user} ({interaction.user.id}) in {interaction.channel}")
        logger.info(f"Cron job arguments: {locals()}")

        # Get the channel ID
        channel_id: int | None = channel.id if channel else (interaction.channel.id if interaction.channel else None)
        if not channel_id:
            await interaction.followup.send(content="Failed to get channel.", ephemeral=True)
            return

        # Ensure the guild is valid
        guild: discord.Guild | None = interaction.guild or None
        if not guild:
            await interaction.followup.send(content="Failed to get guild.", ephemeral=True)
            return

        # Create user DM reminder job if user is specified
        dm_message: str = ""
        if user:
            user_reminder: Job = scheduler.add_job(
                func=send_to_user,
                trigger="cron",
                year=year,
                month=month,
                day=day,
                week=week,
                day_of_week=day_of_week,
                hour=hour,
                minute=minute,
                second=second,
                start_date=start_date,
                end_date=end_date,
                timezone=timezone,
                jitter=jitter,
                kwargs={
                    "user_id": user.id,
                    "guild_id": guild.id,
                    "message": message,
                },
            )

            dm_message = f" and a DM to {user.display_name}"
            if not dm_and_current_channel:
                await interaction.followup.send(
                    content=f"Hello {interaction.user.display_name},\n"
                    f"I will send a DM to {user.display_name} at:\n"
                    f"First run in {calculate(user_reminder)} with the message:\n**{message}**.",
                )
                return

        # Create channel reminder job
        channel_job: Job = scheduler.add_job(
            func=send_to_discord,
            trigger="cron",
            year=year,
            month=month,
            day=day,
            week=week,
            day_of_week=day_of_week,
            hour=hour,
            minute=minute,
            second=second,
            start_date=start_date,
            end_date=end_date,
            timezone=timezone,
            jitter=jitter,
            kwargs={
                "channel_id": channel_id,
                "message": message,
                "author_id": interaction.user.id,
            },
        )

        await interaction.followup.send(
            content=f"Hello {interaction.user.display_name},\n"
            f"I will notify you in <#{channel_id}>{dm_message}.\n"
            f"First run in {calculate(channel_job)} with the message:\n**{message}**.",
        )

    # /remind interval
    @discord.app_commands.command(
        name="interval",
        description="Create a new reminder that triggers based on an interval.",
    )
    async def interval(  # noqa: PLR0913, PLR0917, PLR6301
        self,
        interaction: discord.Interaction,
        message: str,
        weeks: int = 0,
        days: int = 0,
        hours: int = 0,
        minutes: int = 0,
        seconds: int = 0,
        start_date: str | None = None,
        end_date: str | None = None,
        timezone: str | None = None,
        jitter: int | None = None,
        channel: discord.TextChannel | None = None,
        user: discord.User | None = None,
        dm_and_current_channel: bool | None = None,  # noqa: FBT001
    ) -> None:
        """Create a new reminder that triggers based on an interval.

        Args:
            interaction (discord.Interaction): The interaction object for the command.
            message (str): The content of the reminder.
            weeks (int, optional): Number of weeks between each run. Defaults to 0.
            days (int, optional): Number of days between each run. Defaults to 0.
            hours (int, optional): Number of hours between each run. Defaults to 0.
            minutes (int, optional): Number of minutes between each run. Defaults to 0.
            seconds (int, optional): Number of seconds between each run. Defaults to 0.
            start_date (str, optional): Earliest possible date/time to trigger on (inclusive). Will get parsed.
            end_date (str, optional): Latest possible date/time to trigger on (inclusive). Will get parsed.
            timezone (str, optional): Time zone to use for the date/time calculations Defaults to scheduler timezone.
            jitter (int, optional): Delay the job execution by jitter seconds at most.
            channel (discord.TextChannel, optional): The channel to send the reminder to. Defaults to current channel.
            user (discord.User, optional): Send reminder as a DM to this user. Defaults to None.
            dm_and_current_channel (bool, optional): If user is provided, send reminder as a DM to the user and in this channel. Defaults to only the user.
        """  # noqa: E501
        await interaction.response.defer()

        logger.info(f"New interval job from {interaction.user} ({interaction.user.id}) in {interaction.channel}")
        logger.info(f"Arguments: {locals()}")

        # Only allow intervals of 30 seconds or more so we don't spam the channel
        if weeks == days == hours == minutes == 0 and seconds < 30:
            await interaction.followup.send(content="Interval must be at least 30 seconds.", ephemeral=True)
            return

        # Check if we have access to the specified channel or the current channel
        target_channel: InteractionChannel | None = channel or interaction.channel
        if target_channel and interaction.guild and not target_channel.permissions_for(interaction.guild.me).send_messages:
            await interaction.followup.send(
                content=f"I don't have permission to send messages in <#{target_channel.id}>.",
                ephemeral=True,
            )

        # Get the channel ID
        channel_id: int | None = channel.id if channel else (interaction.channel.id if interaction.channel else None)
        if not channel_id:
            await interaction.followup.send(content="Failed to get channel.", ephemeral=True)
            return

        # Ensure the guild is valid
        guild: discord.Guild | None = interaction.guild or None
        if not guild:
            await interaction.followup.send(content="Failed to get guild.", ephemeral=True)
            return

        # Create user DM reminder job if user is specified
        dm_message: str = ""
        if user:
            dm_job: Job = scheduler.add_job(
                func=send_to_user,
                trigger="interval",
                weeks=weeks,
                days=days,
                hours=hours,
                minutes=minutes,
                seconds=seconds,
                start_date=start_date,
                end_date=end_date,
                timezone=timezone,
                jitter=jitter,
                kwargs={
                    "user_id": user.id,
                    "guild_id": guild.id,
                    "message": message,
                },
            )

            dm_message = f" and a DM to {user.display_name} "
            if not dm_and_current_channel:
                await interaction.followup.send(
                    content=f"Hello {interaction.user.display_name},\n"
                    f"I will send a DM to {user.display_name} at:\n"
                    f"First run in {calculate(dm_job)} with the message:\n**{message}**.",
                )

        # Create channel reminder job
        channel_job: Job = scheduler.add_job(
            func=send_to_discord,
            trigger="interval",
            weeks=weeks,
            days=days,
            hours=hours,
            minutes=minutes,
            seconds=seconds,
            start_date=start_date,
            end_date=end_date,
            timezone=timezone,
            jitter=jitter,
            kwargs={
                "channel_id": channel_id,
                "message": message,
                "author_id": interaction.user.id,
            },
        )

        await interaction.followup.send(
            content=f"Hello {interaction.user.display_name},\n"
            f"I will notify you in <#{channel_id}>{dm_message}.\n"
            f"First run in {calculate(channel_job)} with the message:\n**{message}**.",
        )

    # /remind backup
    @discord.app_commands.command(name="backup", description="Backup all reminders to a file.")
    async def backup(self, interaction: discord.Interaction, all_servers: bool = False) -> None:  # noqa: FBT001, FBT002, PLR6301
        """Backup all reminders to a file.

        Args:
            interaction (discord.Interaction): The interaction object for the command.
            all_servers (bool): Backup all servers or just the current server. Defaults to only the current server.
        """
        await interaction.response.defer()

        logger.info(f"Backing up reminders for {interaction.user} ({interaction.user.id}) in {interaction.channel}")
        logger.info(f"Arguments: {locals()}")

        # Retrieve all jobs
        with tempfile.NamedTemporaryFile(mode="r+", delete=False, encoding="utf-8", suffix=".json") as temp_file:
            # Export jobs to a temporary file
            scheduler.export_jobs(temp_file.name)

            # Load the exported jobs
            temp_file.seek(0)
            jobs_data = json.load(temp_file)

        # Amount of jobs before filtering
        amount_of_jobs: int = len(jobs_data.get("jobs", []))

        if not all_servers:
            interaction_channel: InteractionChannel | None = interaction.channel
            if not interaction_channel:
                await interaction.followup.send(content="Failed to get channel.", ephemeral=True)
                return

            if not isinstance(interaction.user, discord.Member):
                await interaction.followup.send(content="Failed to get user.", ephemeral=True)
                return

            is_admin: bool = interaction_channel.permissions_for(interaction.user).administrator
            if not is_admin:
                await interaction.followup.send(content="You must be an administrator to backup all servers.", ephemeral=True)
                return

            # Can't be 0 because that's the default value for jobs without a guild
            guild_id: int = interaction.guild.id if interaction.guild else -1
            channels_in_this_guild: list[int] = [c.id for c in interaction.guild.channels] if interaction.guild else []
            logger.debug(f"Guild ID: {guild_id}")

            for job in jobs_data.get("jobs", []):
                # Check if the job is in the current guild
                job_guild_id = int(job.get("kwargs", {}).get("guild_id", 0))
                if job_guild_id and job_guild_id != guild_id:
                    logger.debug(f"Skipping job: {job.get('id')} because it's not in the current guild.")
                    jobs_data["jobs"].remove(job)

                # Check if the channel is in the current guild
                if job.get("kwargs", {}).get("channel_id") not in channels_in_this_guild:
                    logger.debug(f"Skipping job: {job.get('id')} because it's not in the current guild.")
                    jobs_data["jobs"].remove(job)

        msg: str = "All reminders in this server have been backed up." if not all_servers else "All reminders have been backed up."
        msg += "\nYou can restore them using `/remind restore`."

        if not all_servers:
            msg += f"\nAmount of jobs on all servers: {amount_of_jobs}, in this server: {len(jobs_data.get('jobs', []))}"
            msg += "\nYou can use `/remind backup all_servers:True` to backup all servers."
        else:
            msg += f"\nAmount of jobs: {amount_of_jobs}"

        # Write the data to a new file
        with tempfile.NamedTemporaryFile(mode="w", delete=False, encoding="utf-8", suffix=".json") as output_file:
            file_name: str = f"reminders-backup-{datetime.datetime.now(tz=scheduler.timezone)}.json"
            json.dump(jobs_data, output_file, indent=4)
            output_file.seek(0)

            await interaction.followup.send(content=msg, file=discord.File(output_file.name, filename=file_name))

    # /remind restore
    @discord.app_commands.command(name="restore", description="Restore reminders from a file.")
    async def restore(self, interaction: discord.Interaction) -> None:  # noqa: PLR6301
        """Restore reminders from a file.

        Args:
            interaction (discord.Interaction): The interaction object for the command.
        """
        await interaction.response.defer()

        logger.info(f"Restoring reminders from file for {interaction.user} ({interaction.user.id}) in {interaction.channel}")
        logger.info(f"Arguments: {locals()}")

        # Tell to reply with the file to this message
        await interaction.followup.send(content="Please reply to this message with the backup file.")

        # Get the old jobs
        old_jobs: list[Job] = scheduler.get_jobs()

        # Wait for the reply
        while True:
            try:
                reply: discord.Message | None = await bot.wait_for("message", timeout=60, check=lambda m: m.author == interaction.user)
            except TimeoutError:
                edit_msg = "~~Please reply to this message with the backup file.~~\nTimed out after 60 seconds."
                await interaction.edit_original_response(content=edit_msg)
                return

            if not reply.channel:
                await interaction.followup.send(content="No channel found. Please try again.")
                continue

            # Fetch the message by its ID to ensure we have the latest data
            reply = await reply.channel.fetch_message(reply.id)

            if not reply or not reply.attachments:
                await interaction.followup.send(content="No file attached. Please try again.")
                continue
            break

        # Get the attachment
        attachment: discord.Attachment = reply.attachments[0]
        if not attachment or not attachment.filename.endswith(".json"):
            await interaction.followup.send(
                content=f"Invalid file type. Should be a JSON file not '{attachment.filename}'. Please try again.",
            )
            return

        jobs_already_exist: list[str] = []

        # Save the file to a temporary file and import the jobs
        with tempfile.NamedTemporaryFile(mode="w+", delete=False, encoding="utf-8", suffix=".json") as temp_file:
            logger.info(f"Saving attachment to {temp_file.name}")
            await attachment.save(Path(temp_file.name))

            # Load the jobs data from the file
            temp_file.seek(0)
            jobs_data: dict = json.load(temp_file)

            logger.info("Importing jobs from file")
            logger.debug(f"Jobs data: {jobs_data}")

            with tempfile.NamedTemporaryFile(mode="w+", delete=False, encoding="utf-8", suffix=".json") as temp_import_file:
                # We can't import jobs with the same ID so remove them from the JSON
                jobs = [job for job in jobs_data.get("jobs", []) if not scheduler.get_job(job.get("id"))]
                jobs_already_exist = [job.get("id") for job in jobs_data.get("jobs", []) if scheduler.get_job(job.get("id"))]
                jobs_data["jobs"] = jobs
                for job_id in jobs_already_exist:
                    logger.debug(f"Skipping importing '{job_id}' because it already exists in the db.")

                logger.debug(f"Jobs data after filtering: {jobs_data}")
                logger.info(f"Jobs already exist: {jobs_already_exist}")

                # Write the new data to a temporary file
                json.dump(jobs_data, temp_import_file)
                temp_import_file.seek(0)

                # Import the jobs
                scheduler.import_jobs(temp_import_file.name)

        # Get the new jobs
        new_jobs: list[Job] = scheduler.get_jobs()

        # Get the difference
        added_jobs: list[Job] = [job for job in new_jobs if job not in old_jobs]

        if added_jobs:
            msg: str = "Reminders restored successfully.\nAdded jobs:\n"
            for j in added_jobs:
                msg += f"* Message: **{j.kwargs.get('message', 'No message found')}** {calculate(j) or 'N/A'}\n"

            await interaction.followup.send(content=msg)
        else:
            await interaction.followup.send(content="No new reminders were added.")


intents: discord.Intents = discord.Intents.default()
intents.guild_scheduled_events = True

bot = RemindBotClient(intents=intents)

# Add the group to the bot
remind_group = RemindGroup()
bot.tree.add_command(remind_group)


def send_webhook(custom_url: str = "", message: str = "") -> None:
    """Send a webhook to Discord.

    Args:
        custom_url: The custom webhook URL to send the message to. Defaults to the environment variable.
        message: The message that will be sent to Discord.
    """
    logger.info(f"Sending webhook to '{custom_url}' with message: '{message}'")

    if not message:
        logger.error("No message provided.")
        message = "No message provided."

    webhook_url: str = os.getenv("WEBHOOK_URL", default="")
    url: str = custom_url or webhook_url
    if not url:
        logger.error("No webhook URL provided.")
        return

    webhook: DiscordWebhook = DiscordWebhook(url=custom_url, content=message, rate_limit_retry=True)
    webhook_response: Response = webhook.execute()

    logger.info(f"Webhook response: {webhook_response}")


async def send_to_discord(channel_id: int, message: str, author_id: int) -> None:
    """Send a message to Discord.

    Args:
        channel_id: The Discord channel ID.
        message: The message.
        author_id: User we should ping.
    """
    logger.info(f"Sending message to channel '{channel_id}' with message: '{message}'")

    channel: GuildChannel | discord.Thread | PrivateChannel | None = bot.get_channel(channel_id)
    if channel is None:
        channel = await bot.fetch_channel(channel_id)

    # Channels we can't send messages to
    if isinstance(channel, discord.ForumChannel | discord.CategoryChannel | PrivateChannel):
        logger.warning(f"We haven't implemented sending messages to this channel type {type(channel)}")
        return

    await channel.send(f"<@{author_id}>\n{message}")


async def send_to_user(user_id: int, guild_id: int, message: str) -> None:
    """Send a message to a user via DM.

    Args:
        user_id: The user ID to send the message to.
        guild_id: The guild ID to get the user from.
        message: The message to send.
    """
    logger.info(f"Sending message to user {user_id} in guild {guild_id}")
    try:
        guild: discord.Guild | None = bot.get_guild(guild_id)
        if guild is None:
            guild = await bot.fetch_guild(guild_id)
    except discord.NotFound:
        logger.exception(f"Guild not found. Current guilds: {bot.guilds}")
        return
    except discord.HTTPException:
        logger.exception(f"Failed to fetch guild {guild_id}")
        return

    try:
        member: discord.Member | None = guild.get_member(user_id)
        if member is None:
            member = await guild.fetch_member(user_id)
    except discord.Forbidden:
        logger.exception(f"We do not have access to the guild. Guild: {guild_id}, User: {user_id}")
        return
    except discord.NotFound:
        logger.exception(f"Member not found. Guild: {guild_id}, User: {user_id}")
        return
    except discord.HTTPException:
        logger.exception(f"Fetching the member failed. Guild: {guild_id}, User: {user_id}")
        return

    try:
        await member.send(message)
    except discord.HTTPException:
        logger.exception(f"Failed to send message '{message}' to user '{user_id}' in guild '{guild_id}'")


if __name__ == "__main__":
    bot_token: str = os.getenv("BOT_TOKEN", default="")
    if not bot_token:
        msg = "Missing bot token. Please set the BOT_TOKEN environment variable. Read the README for more information."
        raise ValueError(msg)

    logger.info("Starting bot.")
    bot.run(bot_token)