from __future__ import annotations

import os

import requests
import yaml
from fastapi import FastAPI, HTTPException
from pydantic import BaseModel

app = FastAPI(title="AI CI/CD Assistant")


def _env(name: str, default: str) -> str:
    value = os.getenv(name)
    return value if value else default


# Example for local Ollama: http://localhost:11434/api/generate
OLLAMA_API_URL = _env("OLLAMA_API_URL", "http://host.docker.internal:11434/api/generate")


class GenerationRequest(BaseModel):
    description: str
    platform: str = "GitHub Actions"  # or GitLab CI
    model: str = "codellama"


def validate_config(config_text: str):
    try:
        yaml.safe_load(config_text)
        return True, "Success"
    except Exception as e:
        return False, str(e)


@app.get("/health")
async def health():
    return {"status": "ok"}


@app.post("/generate")
async def generate_pipeline(req: GenerationRequest):
    prompt = (
        f"Write only a valid {req.platform} YAML configuration for: {req.description}. "
        "No explanations, just code."
    )

    payload = {"model": req.model, "prompt": prompt, "stream": False}

    try:
        response = requests.post(OLLAMA_API_URL, json=payload, timeout=60)
        response.raise_for_status()
        raw_text = response.json().get("response", "")

        clean_code = raw_text.replace("```yaml", "").replace("```", "").strip()
        is_valid, error_msg = validate_config(clean_code)

        return {
            "status": "ok" if is_valid else "error",
            "config": clean_code,
            "validation_error": error_msg if not is_valid else None,
        }
    except Exception as e:
        raise HTTPException(status_code=500, detail=f"Ollama error: {str(e)}")


if __name__ == "__main__":
    import uvicorn

    uvicorn.run(app, host="0.0.0.0", port=int(_env("PORT", "8000")))