#!/usr/bin/env python3
"""
client/daily_client.py

Fetch a quote from the API and post it to a Microsoft Teams channel via a webhook.

Behavior:
- Ensures a `.env` file exists next to this script with sensible defaults (if missing).
- Loads KEY=VALUE pairs from the `.env` into the environment (if not already set).
- Requests a random quote from the API using a Bearer token.
- Posts the quote to Teams as a MessageCard (title: "Daily Quote").

Exit codes:
 0 = success
 1 = no quote returned
 2 = failed to fetch quote
 3 = failed to post to Teams
"""

import os
import sys
import json
import requests
import argparse
from pathlib import Path


# Ensure a .env file exists next to this script and load variables from it.
def ensure_env_file(env_path: str, defaults: dict):
    """Create an env file at env_path with defaults if it doesn't exist."""
    p = Path(env_path)
    if not p.exists():
        try:
            p.parent.mkdir(parents=True, exist_ok=True)
            with p.open('w', encoding='utf-8') as f:
                for k, v in defaults.items():
                    f.write(f"{k}={v}\n")
            print(f"Created env file: {env_path}")
        except Exception as e:
            print(f"Failed to create env file {env_path}: {e}")


def load_env_file(env_path: str):
    """Load KEY=VALUE lines from env_path into os.environ if not already set.

    Supports simple lines, ignores blank lines and lines starting with '#'.
    """
    p = Path(env_path)
    if not p.exists():
        return
    try:
        with p.open('r', encoding='utf-8') as f:
            for raw in f:
                line = raw.strip()
                if not line or line.startswith('#'):
                    continue
                if '=' not in line:
                    continue
                k, v = line.split('=', 1)
                k = k.strip()
                v = v.strip().strip('"').strip("'")
                if k and k not in os.environ:
                    os.environ[k] = v
    except Exception as e:
        print(f"Failed to read env file {env_path}: {e}")


# Path to .env in the same folder as this script
_env_path = os.path.join(os.path.dirname(__file__), '.env')
_defaults = {
    'SCHLOTER_API_URL': 'http://schloter.api.ping-mee.de/quotes/random',
    'TEAMS_WEBHOOK_URL': 'https://outlook.office.com/webhook/REPLACE_WITH_YOUR_WEBHOOK',
    'SCHLOTER_API_TOKEN': '?2%?fK+@%Y9wy!f6'
}

ensure_env_file(_env_path, _defaults)
load_env_file(_env_path)


# Where to fetch a quote from (API)
API_URL = os.environ.get('SCHLOTER_API_URL', _defaults['SCHLOTER_API_URL'])

# Microsoft Teams Incoming Webhook URL (Workflows / connectors)
TEAMS_WEBHOOK_URL = os.environ.get('TEAMS_WEBHOOK_URL', _defaults['TEAMS_WEBHOOK_URL'])

# Static token for the API (can be set via environment variable)
API_TOKEN = os.environ.get('SCHLOTER_API_TOKEN', _defaults['SCHLOTER_API_TOKEN'])


def get_quote():
    """Fetch a quote from the API using a Bearer token.

    Returns the quote string or raises on HTTP error.
    """
    headers = {"Authorization": f"Bearer {API_TOKEN}"}
    resp = requests.get(API_URL, headers=headers, timeout=10)
    resp.raise_for_status()
    data = resp.json()
    # API returns {'id': ..., 'quote': '...'}
    return data.get("quote")


def send_teams_message(webhook_url, title, message, color="0076D7"):
    """
    Sends a formatted message to a Microsoft Teams channel using a webhook as a MessageCard.

    Treats HTTP 200 and 202 as success and prints response details.
    """

    headers = {"Content-Type": "application/json"}

    payload = {
        "@type": "MessageCard",
        "@context": "https://schema.org/extensions",
        "themeColor": color,
        "summary": title,
        "sections": [
            {
                "activityTitle": f"**{title}**",
                "text": message
            }
        ]
    }

    try:
        response = requests.post(webhook_url, headers=headers, data=json.dumps(payload), timeout=10)
        # Microsoft Teams incoming webhooks may return 200 or 202 for success
        if response.status_code in (200, 202):
            text = response.text.strip()
            if text:
                print(f"✅ Message sent successfully! Response: {response.status_code} - {text}")
            else:
                print(f"✅ Message sent successfully! Response: {response.status_code}")
            return True
        else:
            print(f"❌ Failed to send message: {response.status_code} - {response.text}")
            return False
    except Exception as e:
        print(f"⚠️ Error sending message: {e}")
        return False


def post_to_teams(quote):
    """Wrapper to post the daily quote as a MessageCard to Teams."""
    title = "Daily Quote"
    return send_teams_message(TEAMS_WEBHOOK_URL, title=title, message=quote)


if __name__ == "__main__":
    # Allow a debug/dry-run mode so we don't have to call the schloter API.
    p = argparse.ArgumentParser(description="Fetch quote (or use local debug quote) and post to Teams webhook")
    p.add_argument('--no-api', action='store_true', help='Do not call the schloter API; use a local quote instead')
    p.add_argument('--local-quote', help='Local quote text to use when --no-api is set')
    args = p.parse_args()

    no_api_env = os.environ.get('SCHLOTER_DEBUG_NO_API', '').lower() in ('1', 'true', 'yes')
    use_no_api = args.no_api or no_api_env

    if use_no_api:
        # Choose local quote from CLI, env, or a sensible default
        quote = args.local_quote or os.environ.get('SCHLOTER_LOCAL_QUOTE') or 'Debug quote: no API call performed.'
        print('DEBUG: Running without calling schloter API; using local quote.')
    else:
        try:
            quote = get_quote()
        except Exception as e:
            print(f"Failed to fetch quote from API: {e}")
            sys.exit(2)

    if not quote:
        print("No quote available")
        sys.exit(1)

    print("Quote to send:", quote)

    ok = post_to_teams(quote)
    if not ok:
        print("Failed to post quote to Teams")
        sys.exit(3)

    print("Quote successfully posted to Teams.")
    sys.exit(0)