#!/usr/bin/env python3
"""Discord Team Activity Checker
Checks for team members who haven't sent messages in their channels within 36 hours
"""

import asyncio
import json
import os
import sys
from datetime import datetime, timedelta, timezone

import aiohttp

# Configuration
DISCORD_TOKEN = os.environ["DISCORD_BOT_TOKEN"]
DISCORD_API_BASE = "https://discord.com/api/v10"
INACTIVE_THRESHOLD_HOURS = 36

# Load team assignments from file
with open("team_assignments.json") as f:
    team_data = json.load(f)

# Build TEAMS dictionary with channel IDs and member lists
TEAMS = {}
CHANNEL_IDS = {
    "Jade Jasmine": "1464316501573107886",
    "Crimson Dahlia": "1464316744909852682",
    "Rose Camellia": "1464316751268286611",
    "Amber Wisteria": "1464316761410113641",
    "Ivory Orchid": "1464316770889240730",
    "Teal Iris": "1464316776459407448",
    "Peach Gardenia": "1464316785040953543",
    "Violet Carnation": "1464316805261824032",
    "Azure Lotus": "1464316814455472139",
    "Coral Sunflower": "1464316819711066263",
    "Indigo Tulip": "1464316826384072925",
    "Scarlet Hydrangea": "1464316839306985506",
    "Mint Narcissus": "1464316844251807952",
    "Sage Marigold": "1464316850669093040",
}

for team in team_data:
    team_name = team["name"]
    if team_name in CHANNEL_IDS:
        TEAMS[team_name] = {
            "channel_id": CHANNEL_IDS[team_name],
            "member_ids": team["leaders"] + team["participants"],
        }


class DiscordActivityChecker:
    def __init__(self, token: str):
        self.token = token
        self.headers = {
            "Authorization": f"Bot {token}",
            "Content-Type": "application/json",
        }
        self.session = None
        self.cutoff_time = datetime.now(timezone.utc) - timedelta(
            hours=INACTIVE_THRESHOLD_HOURS
        )

    async def __aenter__(self):
        self.session = aiohttp.ClientSession()
        return self

    async def __aexit__(self, exc_type, exc_val, exc_tb):
        if self.session:
            await self.session.close()

    async def get_user_info(self, user_id: str) -> dict:
        """Get information about a specific user"""
        url = f"{DISCORD_API_BASE}/users/{user_id}"

        async with self.session.get(url, headers=self.headers) as response:
            if response.status == 429:
                # Rate limited, wait a bit
                await asyncio.sleep(1)
                return None
            elif response.status != 200:
                print(f"Failed to get user {user_id}: {response.status}")
                return None

            user_data = await response.json()
            return user_data

    async def get_recent_message_authors(self, channel_id: str) -> set[str]:
        """Get user IDs of everyone who sent a message in the last 36 hours"""
        url = f"{DISCORD_API_BASE}/channels/{channel_id}/messages?limit=100"
        active_users = set()

        async with self.session.get(url, headers=self.headers) as response:
            if response.status != 200:
                print(
                    f"Failed to get messages for channel {channel_id}: "
                    f"{response.status}"
                )
                return active_users

            messages = await response.json()

            for message in messages:
                # Parse message timestamp
                timestamp = datetime.fromisoformat(
                    message["timestamp"].replace("Z", "+00:00")
                )

                # If message is within our threshold, add the author
                if timestamp > self.cutoff_time:
                    active_users.add(message["author"]["id"])
                else:
                    # Messages are returned newest first, so we can break early
                    break

        return active_users

    async def send_message_to_channel(self, channel_id: str, content: str) -> bool:
        """Send a message to a Discord channel"""
        url = f"{DISCORD_API_BASE}/channels/{channel_id}/messages"
        data = {"content": content}

        async with self.session.post(url, headers=self.headers, json=data) as response:
            if response.status == 200:
                print(f"✅ Message sent to channel {channel_id}")
                return True
            else:
                print(
                    f"❌ Failed to send message to channel {channel_id}: "
                    f"{response.status}"
                )
                return False

    async def check_team_activity(
        self, team_name: str, channel_id: str, member_ids: list[str]
    ) -> dict:
        """Check activity for a specific team"""
        print(f"Checking {team_name}...")

        # Get active users in the channel
        active_users = await self.get_recent_message_authors(channel_id)

        # Find inactive members
        inactive_members = []
        total_members = len(member_ids)

        for member_id in member_ids:
            if member_id not in active_users:
                # Get user information
                user_info = await self.get_user_info(member_id)
                if user_info:
                    # Skip bots
                    if user_info.get("bot", False):
                        total_members -= 1
                        continue

                    inactive_members.append(
                        {"id": member_id, "mention": f"<@{member_id}>"}
                    )
                else:
                    # If we can't get user info, still track them as inactive
                    inactive_members.append(
                        {"id": member_id, "mention": f"<@{member_id}>"}
                    )

        return {
            "team": team_name,
            "total_members": total_members,
            "inactive_members": inactive_members,
            "inactive_count": len(inactive_members),
        }


async def main():
    """Main function to check all teams"""
    print(
        f"Discord Activity Checker - Checking for inactivity over "
        f"{INACTIVE_THRESHOLD_HOURS} hours"
    )
    cutoff = datetime.now(timezone.utc) - timedelta(hours=INACTIVE_THRESHOLD_HOURS)
    print(f"Cutoff time: {cutoff}")
    print("-" * 80)

    async with DiscordActivityChecker(DISCORD_TOKEN) as checker:
        results = []

        for team_name, team_info in TEAMS.items():
            channel_id = team_info["channel_id"]
            member_ids = team_info["member_ids"]

            result = await checker.check_team_activity(
                team_name, channel_id, member_ids
            )
            results.append(result)

        # Display results
        print("\n" + "=" * 80)
        print("INACTIVE MEMBERS REPORT")
        print("=" * 80)

        # Check if user wants to send messages (via command line arg)
        send_messages = "--send" in sys.argv

        for team_result in results:
            print(f"\n📋 {team_result['team']}")
            print(f"   Total Members: {team_result['total_members']}")
            print(f"   Inactive: {team_result['inactive_count']}")

            if team_result["inactive_members"]:
                print("   Inactive Members:")
                for member in team_result["inactive_members"]:
                    print(f"     - {member['mention']}")

                # Send message to team channel if requested
                if send_messages and team_result["inactive_count"] > 0:
                    channel_id = TEAMS[team_result["team"]]["channel_id"]

                    # Build message
                    mentions = "\n".join(
                        [m["mention"] for m in team_result["inactive_members"]]
                    )
                    message = (
                        "Good morning, the following people have not sent a "
                        "message here in the last 36 hours. If you are on this "
                        "list, please confirm you are still participating.\n\n"
                        f"{mentions}"
                    )

                    await checker.send_message_to_channel(channel_id, message)
                    await asyncio.sleep(1)  # Small delay between messages
            else:
                print("   ✅ All members are active!")

        print("\n" + "=" * 80)

        # Save results to JSON
        with open("discord_activity_report.json", "w") as f:
            json.dump(
                {
                    "generated_at": datetime.now(timezone.utc).isoformat(),
                    "threshold_hours": INACTIVE_THRESHOLD_HOURS,
                    "results": results,
                },
                f,
                indent=2,
            )

        print("\n📄 Detailed report saved to discord_activity_report.json")


if __name__ == "__main__":
    asyncio.run(main())