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"""Yeni modellerin reddettiği parametrelere (temperature, max_tokens) uyum."""
import json
import threading
from http.server import BaseHTTPRequestHandler, HTTPServer

import pytest

from t2s import llm

SEEN = []


class H(BaseHTTPRequestHandler):
    def log_message(self, *a):
        pass

    def do_POST(self):
        body = json.loads(self.rfile.read(int(self.headers["Content-Length"])))
        SEEN.append(body)
        if self.path.endswith("/v1/messages") and "temperature" in body:
            return self._send(400, {"type": "error", "error": {"type": "invalid_request_error",
                                                              "message": "`temperature` is deprecated for this model."}})
        if self.path.endswith("/chat/completions") and "max_tokens" in body:
            return self._send(400, {"error": {"message": "Unsupported parameter: 'max_tokens' is not supported with "
                                              "this model. Use 'max_completion_tokens' instead."}})
        if self.path.endswith("/v1/messages"):
            return self._send(200, {"content": [{"type": "text", "text": "ok"}], "usage": {}})
        return self._send(200, {"choices": [{"message": {"content": "ok"}}], "usage": {}})

    def _send(self, code, obj):
        b = json.dumps(obj).encode()
        self.send_response(code)
        self.send_header("Content-Type", "application/json")
        self.send_header("Content-Length", str(len(b)))
        self.end_headers()
        self.wfile.write(b)


@pytest.fixture(scope="module")
def url():
    srv = HTTPServer(("127.0.0.1", 0), H)
    threading.Thread(target=srv.serve_forever, daemon=True).start()
    yield f"http://127.0.0.1:{srv.server_port}"
    srv.shutdown()


def test_claude_drops_temperature(url):
    SEEN.clear()
    be = llm.AnthropicBackend("claude-yeni-x", api_key="k", base_url=url)
    assert be.chat("s", [{"role": "user", "content": "hi"}]) == "ok"
    assert be.chat("s", [{"role": "user", "content": "hi"}]) == "ok"
    assert len(SEEN) == 3 and "temperature" not in SEEN[-1]   # ikinci çağrıda tek istek


def test_openai_switches_max_tokens(url):
    SEEN.clear()
    be = llm.OpenAICompatBackend("yeni-model", base_url=url + "/v1", api_key="k")
    assert be.chat("s", [{"role": "user", "content": "hi"}]) == "ok"
    assert "max_completion_tokens" in SEEN[-1] and "max_tokens" not in SEEN[-1]


def test_openai_new_names_detected():
    be = llm.OpenAICompatBackend("gpt-6-astra", api_key="k")
    p = be._payload("s", [], 50)
    assert "max_completion_tokens" in p and "temperature" not in p