# groq_api.py

import os
import requests

# ✅ Load API key securely from environment variable
GROQ_API_KEY = "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"  # DO NOT hardcode keys!

def summarize_match(job_description, cv_names, cv_snippets):
    if not GROQ_API_KEY:
        return "❌ GROQ_API_KEY not set. Please set it as an environment variable."

    try:
        # ✅ Limit job description and snippet size for Groq token limits
        job_description = job_description.strip()[:600] or "[No description provided]"
        cv_names = [name[:60] for name in cv_names[:3]]
        cv_snippets = [(text.strip()[:400] or "[No content]") for text in cv_snippets[:3]]

        # ✅ Combine into readable prompt
        cv_info = "\n\n".join([
            f"{cv_names[i]}:\n{cv_snippets[i]}"
            for i in range(len(cv_names))
        ])

        prompt = f"""
You are an AI recruiter assistant.

Here is the job description:
---
{job_description}
---

Here are the top 3 candidate CVs (partial content):
{cv_info}

Summarize why these candidates may be a good fit for this role.
""".strip()

        # ✅ Optional debug info
        print("📦 Prompt length (chars):", len(prompt))
        if len(prompt) > 8000:
            return "❌ Prompt too long for Groq (must be under 8K characters)."

        # ✅ Send request to Groq API
        response = requests.post(
            url="https://api.groq.com/openai/v1/chat/completions",
            headers={
                "Authorization": f"Bearer {GROQ_API_KEY}",
                "Content-Type": "application/json"
            },
            json={
                "model": "llama3-8b-8192",  # ✅ Correct Groq model
                "messages": [{"role": "user", "content": prompt}],
                "temperature": 0.5
            },
            timeout=30
        )

        response.raise_for_status()
        return response.json()["choices"][0]["message"]["content"]

    except requests.exceptions.RequestException as e:
        return f"❌ Groq API error: {e}"
    except Exception as e:
        return f"❌ Unexpected error: {e}"