import { defineConfig } from "vitest/config";
import path from "path";

export default defineConfig({
  test: {
    globals: true,
    environment: "jsdom",
    include: ["src/**/*.test.ts", "src/**/*.test.tsx"],
    setupFiles: ["src/test/setup.ts"],
    alias: {
      "@/*": path.resolve(__dirname, "./src/*"),
    },
    // Override environment for API integration tests
    testTimeout: 30000,
    // Skip external processing for optional ML dependencies
    server: {
      deps: {
        external: ["@tensorflow/tfjs-node", "onnxruntime-node"],
      },
    },
    // Coverage configuration
    coverage: {
      provider: "v8",
      reporter: ["text", "json", "html"],
      reportsDirectory: "coverage",
      include: ["src/**/*.{ts,tsx}"],
      exclude: [
        "src/**/*.test.{ts,tsx}",
        "src/test/**/*",
        "src/**/route.ts",
        // Pages that are hard to test in isolation (use server features, async params)
        "src/app/**/*.tsx",
        "src/app/layout.tsx",
        "src/app/not-found.tsx",
        // Database layer - server-only, tested via API routes
        "src/lib/db.ts",
        "src/lib/db/**/*",
        "src/lib/api/diseases-db.ts",
        // ML backends - mocked in tests
        "src/lib/ml/model-loader.ts",
      ],
      thresholds: {
        lines: 80,
        statements: 80,
        branches: 70,
        functions: 80,
      },
    },
  },
  resolve: {
    alias: {
      "@": path.resolve(__dirname, "./src"),
      // Mock optional ML backends — model-loader falls back to mock mode
      "@tensorflow/tfjs-node": path.resolve(__dirname, "src/test/mocks/tfjs-node.ts"),
      "@tensorflow/tfjs": path.resolve(__dirname, "src/test/mocks/tfjs.ts"),
      "onnxruntime-node": path.resolve(__dirname, "src/test/mocks/onnxruntime-node.ts"),
    },
  },
});