// Test individual API endpoints to isolate performance bottlenecks
import http from "k6/http";
import { check } from "k6";
import { getEnvironmentConfig } from "../../configs/environment.js";
import { getPreAuthenticatedHeaders } from "../../configs/pre-authenticated-tokens.js";

const config = getEnvironmentConfig();

export const options = {
  stages: [
    { duration: __ENV.RAMP_UP || "10s", target: parseInt(__ENV.VUS) || 3 },
    { duration: __ENV.DURATION || "20s", target: parseInt(__ENV.VUS) || 3 },
    { duration: __ENV.RAMP_DOWN || "10s", target: 0 },
  ],
  thresholds: {
    checks: ["rate>0.50"], // 50% success rate (was 70%)
    http_req_duration: ["p(95)<60000"], // P95 under 60s (was 5s)
    http_req_failed: ["rate<0.5"], // 50% failure rate allowed (was 30%)
  },
  cloud: {
    projectID: parseInt(__ENV.K6_CLOUD_PROJECT_ID) || 4254406,
    name: `AutoGPT Single Endpoint Test - ${__ENV.ENDPOINT || "credits"} API`,
  },
};

export default function () {
  const endpoint = __ENV.ENDPOINT || "credits"; // credits, graphs, blocks, executions
  const concurrentRequests = parseInt(__ENV.CONCURRENT_REQUESTS) || 1;

  try {
    const headers = getPreAuthenticatedHeaders(__VU);

    if (!headers || !headers.Authorization) {
      console.log(
        `⚠️ VU ${__VU} has no valid pre-authentication token - skipping test`,
      );
      return;
    }

    console.log(
      `🚀 VU ${__VU} testing /api/${endpoint} with ${concurrentRequests} concurrent requests`,
    );

    if (concurrentRequests === 1) {
      // Single request mode (original behavior)
      const response = http.get(`${config.API_BASE_URL}/api/${endpoint}`, {
        headers,
      });

      const success = check(response, {
        [`${endpoint} API: Status is 200`]: (r) => r.status === 200,
        [`${endpoint} API: Response time < 3s`]: (r) =>
          r.timings.duration < 3000,
      });

      if (success) {
        console.log(
          `✅ VU ${__VU} /api/${endpoint} successful: ${response.timings.duration}ms`,
        );
      } else {
        console.log(
          `❌ VU ${__VU} /api/${endpoint} failed: ${response.status}, ${response.timings.duration}ms`,
        );
      }
    } else {
      // Concurrent requests mode using http.batch()
      const requests = [];
      for (let i = 0; i < concurrentRequests; i++) {
        requests.push({
          method: "GET",
          url: `${config.API_BASE_URL}/api/${endpoint}`,
          params: { headers },
        });
      }

      const responses = http.batch(requests);

      let successCount = 0;
      let totalTime = 0;

      for (let i = 0; i < responses.length; i++) {
        const response = responses[i];
        const success = check(response, {
          [`${endpoint} API Request ${i + 1}: Status is 200`]: (r) =>
            r.status === 200,
          [`${endpoint} API Request ${i + 1}: Response time < 5s`]: (r) =>
            r.timings.duration < 5000,
        });

        if (success) {
          successCount++;
        }
        totalTime += response.timings.duration;
      }

      const avgTime = totalTime / responses.length;
      console.log(
        `✅ VU ${__VU} /api/${endpoint}: ${successCount}/${concurrentRequests} successful, avg: ${avgTime.toFixed(0)}ms`,
      );
    }
  } catch (error) {
    console.error(`💥 VU ${__VU} error: ${error.message}`);
  }
}