import { describe, it, expect } from 'vitest';
import * as path from 'path';
import { resolveFixturesPath } from '@/apps/companion/main/di-container';

describe('DIContainer path resolution', () => {
  describe('resolveFixturesPath', () => {
    describe('built mode (with /dist/ in path)', () => {
      it('should resolve fixtures path to monorepo root when dirname is apps/companion/dist/main', () => {
        // Given: The dirname as it would be in built Electron runtime (apps/companion/dist/main)
        const mockDirname = '/Users/test/Projects/gridpilot/apps/companion/dist/main';
        const relativePath = './resources/iracing-hosted-sessions';

        // When: Resolving the fixtures path
        const resolved = resolveFixturesPath(relativePath, mockDirname);

        // Then: Should resolve to monorepo root (4 levels up from apps/companion/dist/main)
        // Level 0: apps/companion/dist/main (__dirname)
        // Level 1: apps/companion/dist (../)
        // Level 2: apps/companion (../../)
        // Level 3: apps (../../../)
        // Level 4: gridpilot (monorepo root) (../../../../) ← CORRECT
        const expectedPath = '/Users/test/Projects/gridpilot/resources/iracing-hosted-sessions';
        expect(resolved).toBe(expectedPath);
      });

      it('should navigate exactly 4 levels up in built mode', () => {
        // Given: A path with /dist/ that demonstrates the 4-level navigation
        const mockDirname = '/level4/level3/dist/level1';
        const relativePath = './target';

        // When: Resolving the fixtures path
        const resolved = resolveFixturesPath(relativePath, mockDirname);

        // Then: Should resolve to the path 4 levels up (root /)
        expect(resolved).toBe('/target');
      });

      it('should work with different relative path formats in built mode', () => {
        // Given: Various relative path formats
        const mockDirname = '/Users/test/Projects/gridpilot/apps/companion/dist/main';

        // When/Then: Different relative formats should all work
        expect(resolveFixturesPath('resources/fixtures', mockDirname))
          .toBe('/Users/test/Projects/gridpilot/resources/fixtures');
        
        expect(resolveFixturesPath('./resources/fixtures', mockDirname))
          .toBe('/Users/test/Projects/gridpilot/resources/fixtures');
      });
    });

    describe('dev mode (without /dist/ in path)', () => {
      it('should resolve fixtures path to monorepo root when dirname is apps/companion/main', () => {
        // Given: The dirname as it would be in dev mode (apps/companion/main)
        const mockDirname = '/Users/test/Projects/gridpilot/apps/companion/main';
        const relativePath = './resources/iracing-hosted-sessions';

        // When: Resolving the fixtures path
        const resolved = resolveFixturesPath(relativePath, mockDirname);

        // Then: Should resolve to monorepo root (3 levels up from apps/companion/main)
        // Level 0: apps/companion/main (__dirname)
        // Level 1: apps/companion (../)
        // Level 2: apps (../../)
        // Level 3: gridpilot (monorepo root) (../../../) ← CORRECT
        const expectedPath = '/Users/test/Projects/gridpilot/resources/iracing-hosted-sessions';
        expect(resolved).toBe(expectedPath);
      });

      it('should navigate exactly 3 levels up in dev mode', () => {
        // Given: A path without /dist/ that demonstrates the 3-level navigation
        const mockDirname = '/level3/level2/level1';
        const relativePath = './target';

        // When: Resolving the fixtures path
        const resolved = resolveFixturesPath(relativePath, mockDirname);

        // Then: Should resolve to the path 3 levels up (root /)
        expect(resolved).toBe('/target');
      });

      it('should work with different relative path formats in dev mode', () => {
        // Given: Various relative path formats
        const mockDirname = '/Users/test/Projects/gridpilot/apps/companion/main';

        // When/Then: Different relative formats should all work
        expect(resolveFixturesPath('resources/fixtures', mockDirname))
          .toBe('/Users/test/Projects/gridpilot/resources/fixtures');
        
        expect(resolveFixturesPath('./resources/fixtures', mockDirname))
          .toBe('/Users/test/Projects/gridpilot/resources/fixtures');
      });
    });

    describe('absolute paths', () => {
      it('should return absolute paths unchanged in built mode', () => {
        // Given: An absolute path
        const absolutePath = '/some/absolute/path/to/fixtures';
        const mockDirname = '/Users/test/Projects/gridpilot/apps/companion/dist/main';

        // When: Resolving an absolute path
        const resolved = resolveFixturesPath(absolutePath, mockDirname);

        // Then: Should return the absolute path unchanged
        expect(resolved).toBe(absolutePath);
      });

      it('should return absolute paths unchanged in dev mode', () => {
        // Given: An absolute path
        const absolutePath = '/some/absolute/path/to/fixtures';
        const mockDirname = '/Users/test/Projects/gridpilot/apps/companion/main';

        // When: Resolving an absolute path
        const resolved = resolveFixturesPath(absolutePath, mockDirname);

        // Then: Should return the absolute path unchanged
        expect(resolved).toBe(absolutePath);
      });
    });
  });
});