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/**
 * ProxySettings Component Tests
 */

import { describe, it, expect, vi, beforeEach } from "vitest";

// Define types locally to avoid module resolution issues
interface ProxyConfig {
  enabled: boolean;
  address: string;
}

interface ProxyTestResult {
  success: boolean;
  message: string;
  latency_ms?: number;
}

describe("ProxySettings Logic", () => {
  beforeEach(() => {
    vi.clearAllMocks();
  });

  describe("Data Fetching", () => {
    it("returns loading state structure", () => {
      const result = { data: undefined, isLoading: true, error: null };
      expect(result.isLoading).toBe(true);
    });

    it("returns config data when loaded", () => {
      const mockConfig: ProxyConfig = {
        enabled: true,
        address: "http://127.0.0.1:7890",
      };
      const result = { data: mockConfig, isLoading: false, error: null };
      expect(result.data).toEqual(mockConfig);
      expect(result.isLoading).toBe(false);
    });
  });

  describe("Mutations", () => {
    it("mutation for updateProxyConfig accepts correct type", () => {
      const config: ProxyConfig = {
        enabled: true,
        address: "http://proxy:8080",
      };
      expect(config.enabled).toBe(true);
      expect(config.address).toBe("http://proxy:8080");
    });

    it("mutation for testProxyConnectivity accepts string", () => {
      const address = "http://proxy:8080";
      expect(typeof address).toBe("string");
    });

    it("tracks pending state", () => {
      const mutation = { isPending: true };
      expect(mutation.isPending).toBe(true);
    });
  });

  describe("Form Validation Logic", () => {
    it("validates proxy address format", () => {
      const validAddresses = [
        "http://127.0.0.1:7890",
        "http://proxy.example.com:8080",
        "socks5://localhost:1080",
      ];

      validAddresses.forEach((addr) => {
        expect(addr.trim().length > 0).toBe(true);
      });
    });

    it("detects empty address", () => {
      const emptyAddress = "   ";
      expect(emptyAddress.trim().length === 0).toBe(true);
    });

    it("handles enabled toggle state change", () => {
      let localConfig: ProxyConfig = {
        enabled: false,
        address: "http://127.0.0.1:7890",
      };

      // Simulate toggle
      localConfig = { ...localConfig, enabled: !localConfig.enabled };

      expect(localConfig.enabled).toBe(true);
    });

    it("tracks hasChanges when address changes", () => {
      let hasChanges = false;
      let localConfig: ProxyConfig = {
        enabled: false,
        address: "http://127.0.0.1:7890",
      };

      // Simulate address change
      localConfig = { ...localConfig, address: "http://new-proxy:8080" };
      hasChanges = true;

      expect(hasChanges).toBe(true);
      expect(localConfig.address).toBe("http://new-proxy:8080");
    });
  });

  describe("Test Result Display", () => {
    it("stores successful test result", () => {
      let testResult: ProxyTestResult | null = null;

      // Simulate successful test
      testResult = { success: true, message: "Connected", latency_ms: 42 };

      expect(testResult.success).toBe(true);
      expect(testResult.latency_ms).toBe(42);
    });

    it("stores failed test result", () => {
      let testResult: ProxyTestResult | null = null;

      // Simulate failed test
      testResult = { success: false, message: "Connection refused" };

      expect(testResult.success).toBe(false);
      expect(testResult.latency_ms).toBeUndefined();
    });

    it("clears test result on address change", () => {
      let testResult: ProxyTestResult | null = {
        success: true,
        message: "OK",
      };

      // Simulate address change clearing result
      testResult = null;

      expect(testResult).toBeNull();
    });
  });
});