import { getConfig } from "@/lib/config";

export async function GET() {
  try {
    const result = getConfig();
    
    if (!result.ok) {
      return Response.json({
        configPresent: false,
        baseUrl: null,
        model: null,
        reachable: false,
        error: "Missing or invalid environment configuration",
      }, { status: 500 });
    }

    const { OLLAMA_BASE_URL, OLLAMA_MODEL } = result.config;

    // Test reachability with a short timeout
    let reachable = false;
    let reachError = null;
    
    try {
      const controller = new AbortController();
      const timeout = setTimeout(() => controller.abort(), 3000);
      
      const res = await fetch(`${OLLAMA_BASE_URL}/api/tags`, { 
        signal: controller.signal 
      });
      clearTimeout(timeout);
      reachable = res.ok;
    } catch (e) {
      reachError = e.message || "Connection failed";
    }

    return Response.json({
      configPresent: true,
      baseUrl: OLLAMA_BASE_URL,
      model: OLLAMA_MODEL,
      reachable,
      error: reachable ? null : (`Could not reach Ollama at ${OLLAMA_BASE_URL}: ${reachError || "timeout"}`),
    });
  } catch (e) {
    return Response.json(
      { configPresent: false, error: e.message },
      { status: 500 }
    );
  }
}