#!/usr/bin/env python3
import os
import sys
import json
import subprocess
from datetime import datetime

# Fügen Sie das Projekt-Stammverzeichnis zum Python-Pfad hinzu
# Das ist das Verzeichnis, in dem sich das Hook-Skript befindet
sys.path.append(os.path.dirname(os.path.abspath(__file__)))

try:
    from dev_session import append_blocks_to_notion_page, decimal_hours_to_hhmm
except ImportError:
    print("Fehler: Konnte dev_session.py nicht importieren.", file=sys.stderr)
    sys.exit(1)

SESSION_DIR = ".dev_session"
SESSION_FILE_PATH = os.path.join(SESSION_DIR, "SESSION_INFO")

def get_last_commit_message() -> str:
    """Holt die letzte Commit-Nachricht mit git."""
    try:
        result = subprocess.run(
            ["git", "log", "-1", "--pretty=%B"],
            capture_output=True,
            text=True,
            check=True
        )
        return result.stdout.strip()
    except (subprocess.CalledProcessError, FileNotFoundError):
        return ""

def is_merge_commit() -> bool:
    """Prüft, ob der letzte Commit ein Merge-Commit ist."""
    try:
        result = subprocess.run(["git", "rev-parse", "--quiet", "--verify", "MERGE_HEAD"], capture_output=True, check=False)
        return result.returncode == 0
    except Exception:
        return False

def main():
    """Hauptfunktion des Git-Hooks."""
    # Führe den Hook nur aus, wenn eine aktive Session existiert und es kein Merge-Commit ist
    if not os.path.exists(SESSION_FILE_PATH) or is_merge_commit():
        sys.exit(0)

    try:
        with open(SESSION_FILE_PATH, "r") as f:
            session_data = json.load(f)
        
        task_id = session_data.get("task_id")
        token = session_data.get("token")
        session_start_time_str = session_data.get("session_start_time")

        if not task_id or not token:
            sys.exit(0)

        commit_message = get_last_commit_message()

        if commit_message:
            time_comment = ""
            if session_start_time_str:
                session_start_time = datetime.fromisoformat(session_start_time_str)
                elapsed_time = datetime.now() - session_start_time
                elapsed_hours = elapsed_time.total_seconds() / 3600
                elapsed_hhmm = decimal_hours_to_hhmm(elapsed_hours)
                time_comment = f"⏱️ Arbeitszeit in dieser Session: {elapsed_hhmm}\n"

            report_content = f"✅ New Commit:\n{time_comment}---\n{commit_message}"
            timestamp = datetime.now().strftime('%Y-%m-%d %H:%M')
            
            notion_blocks = [
                {
                    "object": "block",
                    "type": "heading_2",
                    "heading_2": {
                        "rich_text": [{"type": "text", "text": {"content": f"🤖 Git Commit ({timestamp})"}}]
                    }
                },
                {
                    "object": "block",
                    "type": "code",
                    "code": {
                        "rich_text": [{"type": "text", "text": {"content": report_content}}],
                        "language": "yaml"
                    }
                }
            ]
            append_blocks_to_notion_page(token, task_id, notion_blocks)

    except (FileNotFoundError, json.JSONDecodeError):
        # Wenn die Datei nicht existiert oder fehlerhaft ist, einfach beenden
        sys.exit(0)

if __name__ == "__main__":
    main()