import json
import os
import uvicorn
import urllib.request
import urllib.error
from fastapi import FastAPI, Request
from fastapi.responses import HTMLResponse, JSONResponse

app = FastAPI()


def call_gemini(prompt: str) -> str:
    api_key = os.environ.get("GEMINI_API_KEY", "")
    if not api_key:
        raise ValueError("GEMINI_API_KEY is not set in environment variables")

    url = (
        "https://generativelanguage.googleapis.com/v1beta/models/"
        "gemini-1.5-flash:generateContent?key=" + api_key
    )

    payload = json.dumps({
        "contents": [{"parts": [{"text": prompt}]}],
        "generationConfig": {
            "temperature": 0.7,
            "maxOutputTokens": 1000
        }
    }).encode("utf-8")

    req = urllib.request.Request(
        url,
        data=payload,
        headers={"Content-Type": "application/json"},
        method="POST"
    )

    try:
        with urllib.request.urlopen(req, timeout=30) as resp:
            data = json.loads(resp.read().decode("utf-8"))
    except urllib.error.HTTPError as e:
        error_body = e.read().decode("utf-8")
        raise ValueError("Gemini HTTP error " + str(e.code) + ": " + error_body)

    return data["candidates"][0]["content"]["parts"][0]["text"]


@app.post("/analyze")
async def analyze(request: Request):
    try:
        body = await request.json()
        user_data = body["user_data"]
        answers   = body["answers"]
        scores    = body["scores"]

        answers_text = ""
        for a in answers:
            answers_text += "- [" + a["category"] + "] " + a["question"][:60] + "... Answer: " + a["answer"][:50] + "\n"

        prompt = (
            "You are an expert psychologist and intelligence analyst.\n"
            "Analyze these test results and return a JSON report.\n\n"
            "User: " + user_data["name"] + ", Age " + str(user_data["age"]) + ", " + user_data["edu"] + ", likes " + user_data["interest"] + "\n\n"
            "Scores: Logical=" + str(scores["logical"]) + " Creative=" + str(scores["creative"]) +
            " Spatial=" + str(scores["spatial"]) + " Verbal=" + str(scores["verbal"]) + " Emotional=" + str(scores["emotional"]) + "\n\n"
            "Answers:\n" + answers_text + "\n"
            "Return ONLY valid JSON, no markdown, no backticks, no extra text:\n"
            '{"intel_type":"3-4 sentences about dominant intelligence","scientist_name":"matching historical scientist","scientist_title":"their field","scientist_icon":"emoji","scientist_reason":"2-3 sentences why similar","jobs":["job1","job2","job3","job4"],"jobs_reason":"2 sentences why suitable","advice":"2-3 sentences personal advice"}'
        )

        text = call_gemini(prompt)
        text = text.replace("```json", "").replace("```", "").strip()

        # Find JSON in response
        start = text.find("{")
        end = text.rfind("}") + 1
        if start == -1 or end == 0:
            raise ValueError("No JSON found in response: " + text[:200])

        result = json.loads(text[start:end])
        return JSONResponse(content=result)

    except Exception as e:
        return JSONResponse(content={"error": str(e)}, status_code=500)


@app.get("/", response_class=HTMLResponse)
async def root():
    try:
        with open("index.html", "r", encoding="utf-8") as f:
            return f.read()
    except FileNotFoundError:
        return HTMLResponse("<h1>index.html not found</h1>", status_code=404)


@app.get("/health")
async def health():
    key = os.environ.get("GEMINI_API_KEY", "")
    return {
        "status": "ok",
        "gemini_key_set": bool(key),
        "key_preview": key[:10] + "..." if key else "NOT SET"
    }


if __name__ == "__main__":
    uvicorn.run(app, host="0.0.0.0", port=7860)