/**
 * Vitest configuration for singularity-forge.
 *
 * Runs tests directly from TypeScript source — no esbuild pre-compilation needed.
 * Vitest handles TypeScript transformation via esbuild (bundled, not separate process).
 *
 * Coverage uses @vitest/coverage-v8 (same engine as c8, but integrated).
 *
 * Usage:
 *   npx vitest run              # run all tests once
 *   npx vitest                  # watch mode
 *   npx vitest run --changed    # only tests affected by recent changes
 */
import { defineConfig } from "vitest/config";
import { resolve } from "node:path";

const __dirname = import.meta.dirname;

export default defineConfig({
  test: {
    // ── File patterns ─────────────────────────────────────────────────────────
    // Files without vitest imports (standalone test scripts that run assertions
    // directly at module load time — these are skipped by the old node --test
    // runner and must be excluded here too to avoid "No test suite found" errors.
    exclude: [
      // Standalone script-style tests (no describe/test, custom assertEq)
      // (converted to vitest describe/it style)
      "packages/pi-coding-agent/src/core/lsp/lsp-integration.test.ts",
      // SF integration tests without vitest test/it calls (WIP or script-style)
      "src/resources/extensions/sf/tests/integration/git-self-heal.test.ts",
      "src/resources/extensions/sf/tests/integration/queue-completed-milestone-perf.test.ts",
      "src/resources/extensions/sf/tests/integration/token-savings.test.ts",
      "src/resources/extensions/sf/tests/integration/worktree-e2e.test.ts",
      "src/resources/extensions/sf/tests/auto-start-worktree-db-path.test.ts",
      "src/resources/extensions/sf/tests/complete-task.test.ts",
      "src/resources/extensions/sf/tests/derive-state-db-disk-reconcile.test.ts",
      "src/resources/extensions/sf/tests/doctor-fix-flag.test.ts",
      "src/resources/extensions/sf/tests/draft-promotion.test.ts",
      "src/resources/extensions/sf/tests/merge-conflict-stops-loop.test.ts",
      "src/resources/extensions/sf/tests/planning-crossval.test.ts",
      "src/resources/extensions/sf/tests/recovery-attempts-reset.test.ts",
      "src/resources/extensions/sf/tests/slice-disk-reconcile.test.ts",
      "src/resources/extensions/sf/tests/survivor-branch-complete.test.ts",
      "src/resources/extensions/sf/tests/tool-naming.test.ts",
      "src/resources/extensions/sf/tests/unit-runtime.test.ts",
      "src/resources/extensions/sf/tests/worker-registry.test.ts",
      "src/resources/extensions/sf/tests/worktree-health-monorepo.test.ts",
      "src/resources/extensions/sf/tests/worktree-submodule-safety.test.ts",
      "src/resources/extensions/sf/tests/worktree-sync-overwrite-loop.test.ts",
      "src/resources/extensions/sf/tests/zombie-sf-state.test.ts",
    ],
    include: [
      "src/tests/**/*.test.ts",
      "src/tests/**/*.test.mjs",
      "src/resources/extensions/sf/tests/**/*.test.ts",
      "src/resources/extensions/sf/tests/**/*.test.mjs",
      "src/resources/extensions/shared/tests/**/*.test.ts",
      "src/resources/extensions/claude-code-cli/tests/**/*.test.ts",
      "src/resources/extensions/github-sync/tests/**/*.test.ts",
      "src/resources/extensions/universal-config/tests/**/*.test.ts",
      "src/resources/extensions/voice/tests/**/*.test.ts",
      "src/resources/extensions/vectordrive/tests/**/*.test.ts",
      "src/resources/extensions/mcp-client/tests/**/*.test.ts",
      "src/resources/extensions/async-jobs/*.test.ts",
      "src/resources/extensions/browser-tools/tests/*.test.mjs",
      "packages/pi-coding-agent/src/**/*.test.ts",
      "packages/pi-ai/src/**/*.test.ts",
      "packages/pi-agent-core/src/**/*.test.ts",
      "packages/pi-tui/src/**/*.test.ts",
      "packages/daemon/src/**/*.test.ts",
      "packages/mcp-server/src/**/*.test.ts",
      "packages/rpc-client/src/**/*.test.ts",
      "packages/native/src/**/*.test.mjs",
      "web/lib/**/*.test.ts",
      "studio/test/**/*.test.mjs",
      "scripts/*.test.mjs",
    ],

    // ── Timeouts ──────────────────────────────────────────────────────────────
    testTimeout: 30_000,
    hookTimeout: 30_000,

    // ── Pool: forks = one Node process per test file (best for Node.js tests) ─
    pool: "forks",
    // Single worker in CI; parallel in dev for speed
    singleFork: process.env.CI === "true",

    // ── Coverage ──────────────────────────────────────────────────────────────
    coverage: {
      provider: "v8",
      reporter: ["text", "lcov"],
      exclude: [
        "src/resources/extensions/sf/tests/**",
        "src/tests/**",
        "scripts/**",
        "rust-engine/**",
        "node_modules/**",
        "dist/**",
        "dist-test/**",
        "web/**",
      ],
      thresholds: {
        statements: 40,
        lines: 40,
        branches: 20,
        functions: 20,
      },
    },

    // ── TypeScript / module resolution ─────────────────────────────────────────
    // Vitest uses esbuild for TS transform (fast, bundled). We still set up
    // NodeNext module resolution and path aliases to match the project's tsconfig.
    resolve: {
      alias: {
        "@singularity-forge/pi-coding-agent": resolve(
          __dirname,
          "packages/pi-coding-agent/src/index.ts",
        ),
        "@singularity-forge/pi-ai": resolve(
          __dirname,
          "packages/pi-ai/src/index.ts",
        ),
        "@singularity-forge/pi-ai/oauth": resolve(
          __dirname,
          "packages/pi-ai/src/utils/oauth/index.ts",
        ),
        "@singularity-forge/pi-agent-core": resolve(
          __dirname,
          "packages/pi-agent-core/src/index.ts",
        ),
        "@singularity-forge/pi-tui": resolve(
          __dirname,
          "packages/pi-tui/src/index.ts",
        ),
        "@singularity-forge/native": resolve(
          __dirname,
          "packages/native/src/index.ts",
        ),
        "@singularity-forge/mcp-server": resolve(
          __dirname,
          "packages/mcp-server/src/index.ts",
        ),
        "@singularity-forge/rpc-client": resolve(
          __dirname,
          "packages/rpc-client/src/index.ts",
        ),
      },
    },
  },
});