import os
import subprocess

from fastapi import APIRouter
from pydantic import BaseModel

router = APIRouter(prefix="/api")

class RunSkillRequest(BaseModel):
    skill_name: str

@router.get("/skills")
def list_skills():
    """Listet alle verfügbaren Skills aus dem deploy/skills Verzeichnis auf."""
    skills_dir = os.path.join(os.getcwd(), "deploy", "skills")
    skills = []
    
    if os.path.exists(skills_dir) and os.path.isdir(skills_dir):
        for entry in os.scandir(skills_dir):
            if entry.is_dir():
                # Suche nach SKILL.md für Metadaten
                skill_md_path = os.path.join(entry.path, "SKILL.md")
                description = ""
                if os.path.exists(skill_md_path):
                    try:
                        with open(skill_md_path, "r", encoding="utf-8") as f:
                            # Lese erste Zeilen für Description (YAML Frontmatter)
                            lines = f.readlines()[:10]
                            for line in lines:
                                if "description:" in line.lower():
                                    description = line.split(":", 1)[1].strip().strip('"\'')
                                    break
                                elif "author:" in line.lower() and not description:
                                    description = line.strip()
                    except Exception:
                        pass
                
                skills.append({
                    "name": entry.name,
                    "description": description or "Keine Beschreibung verfügbar."
                })
    return {"skills": skills}

@router.post("/skills/run")
def run_skill(req: RunSkillRequest):
    """Startet einen autonomen Skill via Hermes im Hintergrund."""
    hermes_bin = os.path.expanduser("~/.local/bin/hermes")
    if not os.path.exists(hermes_bin):
        # Fallback falls lokal (auf Windows) entwickelt wird
        return {"ok": False, "err": "Hermes CLI nicht gefunden (~/.local/bin/hermes fehlt). Bist du lokal unterwegs?"}
    
    # Entspricht: hermes "Führe den 'X' Skill aus"
    cmd = [hermes_bin, f"Führe den '{req.skill_name}' Skill aus"]
    try:
        subprocess.Popen(cmd, stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
        return {"ok": True, "msg": f"Skill '{req.skill_name}' erfolgreich angestoßen."}
    except Exception as e:
        return {"ok": False, "err": str(e)}