#!/usr/bin/env python3

import discord
from discord.ext import tasks
import logging
import asyncio
from datetime import datetime
import sys
import config
from cve_handler import CVEHandler

logging.basicConfig(level=logging.INFO, format='%(asctime)s - %(name)s - %(levelname)s - %(message)s')
logger = logging.getLogger(__name__)

class TestCVEDiscordBot(discord.Client):

    def __init__(self, *args, **kwargs):
        intents = discord.Intents.default()
        intents.message_content = True
        super().__init__(intents=intents, *args, **kwargs)

        self.channel_id = int(config.DISCORD_CHANNEL_ID)
        self.test_sent = False

    async def on_ready(self):
        logger.info(f'Bot logged in as {self.user}')

        channel = self.get_channel(self.channel_id)
        if not channel:
            logger.error(f"Cannot find channel {self.channel_id}")
            await self.close()
            return

        logger.info(f"Connected to channel: #{channel.name}")

        test_cves = [
            {
                'cve_id': 'CVE-2024-TEST-001',
                'vendor_code': 'microsoft',
                'description': 'TEST: Critical vulnerability in Windows Update Service allows remote code execution. An attacker could exploit this vulnerability by sending specially crafted packets to the target system.',
                'cvss_score': 9.8,
                'severity': 'CRITICAL',
                'published_date': datetime.utcnow().isoformat(),
            },
            {
                'cve_id': 'CVE-2024-TEST-002',
                'vendor_code': 'cisco',
                'description': 'TEST: High severity vulnerability in Cisco IOS allows privilege escalation. Authenticated attackers can gain root access.',
                'cvss_score': 8.1,
                'severity': 'HIGH',
                'published_date': datetime.utcnow().isoformat(),
            },
            {
                'cve_id': 'CVE-2024-TEST-003',
                'vendor_code': 'linux',
                'description': 'TEST: Linux kernel vulnerability allows local privilege escalation through improper input validation.',
                'cvss_score': 7.2,
                'severity': 'HIGH',
                'published_date': datetime.utcnow().isoformat(),
            }
        ]

        logger.info(f"Sending {len(test_cves)} test CVE notifications...")

        for i, cve in enumerate(test_cves, 1):
            try:
                logger.info(f"[{i}/{len(test_cves)}] Sending: {cve['cve_id']} ({cve['severity']})")
                embed = self.create_cve_embed(cve)
                await channel.send(embed=embed)
                logger.info(f"Sent {cve['cve_id']}")
                await asyncio.sleep(1)
            except Exception as e:
                logger.error(f"Error sending {cve['cve_id']}: {e}")

        logger.info(f"Test completed - sent {len(test_cves)} notifications")

        self.test_sent = True
        await asyncio.sleep(2)
        await self.close()

    def create_cve_embed(self, cve: dict) -> discord.Embed:

        severity_colors = {
            'CRITICAL': 0xDC3545,
            'HIGH': 0xFD7E14,
            'MEDIUM': 0xFFC107,
            'LOW': 0x6C757D
        }

        severity = cve.get('severity', 'UNKNOWN')
        color = severity_colors.get(severity, 0x6C757D)

        vendor_code = cve.get('vendor_code', '')
        vendor = next((v for v in config.VENDORS if v['code'] == vendor_code), None)
        vendor_name = vendor['name'] if vendor else vendor_code.title()

        embed = discord.Embed(
            title=f"🧪 TEST: {cve['cve_id']}",
            description=f"**[TEST NOTIFICATION]**\n\n{cve.get('description', 'No description')}",
            color=color,
            timestamp=datetime.utcnow()
        )

        embed.add_field(name="Vendor", value=vendor_name, inline=True)
        embed.add_field(name="Severity", value=severity, inline=True)

        cvss_score = cve.get('cvss_score')
        embed.add_field(
            name="CVSS Score",
            value=f"**{cvss_score:.1f}**" if cvss_score else "N/A",
            inline=True
        )

        published = cve.get('published_date', '')
        if published:
            try:
                pub_date = datetime.fromisoformat(published.replace('Z', '+00:00'))
                embed.add_field(
                    name="Published",
                    value=pub_date.strftime('%Y-%m-%d %H:%M UTC'),
                    inline=True
                )
            except:
                pass

        nvd_url = f"https://nvd.nist.gov/vuln/detail/{cve['cve_id']}"
        embed.add_field(
            name="Links",
            value=f"[View on NVD]({nvd_url})",
            inline=False
        )

        embed.set_footer(
            text=f"CVE Monitor TEST • {vendor_name}",
            icon_url="https://nvd.nist.gov/favicon.ico"
        )

        return embed

def run_test():

    if not config.DISCORD_BOT_TOKEN:
        logger.error("DISCORD_BOT_TOKEN not set in .env")
        sys.exit(1)

    if not config.DISCORD_CHANNEL_ID:
        logger.error("DISCORD_CHANNEL_ID not set in .env")
        sys.exit(1)

    logger.info("CVE MONITOR - Discord Bot Test")
    logger.info(f"Token: {config.DISCORD_BOT_TOKEN[:20]}...")
    logger.info(f"Channel ID: {config.DISCORD_CHANNEL_ID}")
    logger.info(f"Min CVSS: {config.DISCORD_MIN_CVSS}")

    bot = TestCVEDiscordBot()

    try:
        bot.run(config.DISCORD_BOT_TOKEN)
    except discord.LoginFailure:
        logger.error("Invalid Discord bot token")
    except KeyboardInterrupt:
        logger.info("Test interrupted by user")
    except Exception as e:
        logger.error(f"Error: {e}", exc_info=True)


if __name__ == '__main__':
    run_test()