/**
 * Tests for scripts/lib/install-manifests.js
 */

const assert = require('assert');
const fs = require('fs');
const os = require('os');
const path = require('path');

const {
  loadInstallManifests,
  listInstallComponents,
  listLegacyCompatibilityLanguages,
  listInstallModules,
  listInstallProfiles,
  resolveInstallPlan,
  resolveLegacyCompatibilitySelection,
  validateInstallModuleIds,
} = require('../../scripts/lib/install-manifests');

function test(name, fn) {
  try {
    fn();
    console.log(`  \u2713 ${name}`);
    return true;
  } catch (error) {
    console.log(`  \u2717 ${name}`);
    console.log(`    Error: ${error.message}`);
    return false;
  }
}

function createTestRepo() {
  const root = fs.mkdtempSync(path.join(os.tmpdir(), 'install-manifests-'));
  fs.mkdirSync(path.join(root, 'manifests'), { recursive: true });
  return root;
}

function cleanupTestRepo(root) {
  fs.rmSync(root, { recursive: true, force: true });
}

function writeJson(filePath, value) {
  fs.mkdirSync(path.dirname(filePath), { recursive: true });
  fs.writeFileSync(filePath, JSON.stringify(value, null, 2));
}

function runTests() {
  console.log('\n=== Testing install-manifests.js ===\n');

  let passed = 0;
  let failed = 0;

  if (test('loads real project install manifests', () => {
    const manifests = loadInstallManifests();
    assert.ok(manifests.modules.length >= 1, 'Should load modules');
    assert.ok(Object.keys(manifests.profiles).length >= 1, 'Should load profiles');
    assert.ok(manifests.components.length >= 1, 'Should load components');
  })) passed++; else failed++;

  if (test('lists install profiles from the real project', () => {
    const profiles = listInstallProfiles();
    assert.ok(profiles.some(profile => profile.id === 'core'), 'Should include core profile');
    assert.ok(profiles.some(profile => profile.id === 'full'), 'Should include full profile');
  })) passed++; else failed++;

  if (test('lists install modules from the real project', () => {
    const modules = listInstallModules();
    assert.ok(modules.some(module => module.id === 'rules-core'), 'Should include rules-core');
    assert.ok(modules.some(module => module.id === 'orchestration'), 'Should include orchestration');
  })) passed++; else failed++;

  if (test('lists install components from the real project', () => {
    const components = listInstallComponents();
    assert.ok(components.some(component => component.id === 'lang:typescript'),
      'Should include lang:typescript');
    assert.ok(components.some(component => component.id === 'capability:security'),
      'Should include capability:security');
  })) passed++; else failed++;

  if (test('lists supported legacy compatibility languages', () => {
    const languages = listLegacyCompatibilityLanguages();
    assert.ok(languages.includes('typescript'));
    assert.ok(languages.includes('python'));
    assert.ok(languages.includes('go'));
    assert.ok(languages.includes('golang'));
    assert.ok(languages.includes('kotlin'));
    assert.ok(languages.includes('rust'));
    assert.ok(languages.includes('cpp'));
    assert.ok(languages.includes('csharp'));
  })) passed++; else failed++;

  if (test('resolves a real project profile with target-specific skips', () => {
    const projectRoot = '/workspace/app';
    const plan = resolveInstallPlan({ profileId: 'developer', target: 'cursor', projectRoot });
    assert.ok(plan.selectedModuleIds.includes('rules-core'), 'Should keep rules-core');
    assert.ok(plan.selectedModuleIds.includes('commands-core'), 'Should keep commands-core');
    assert.ok(!plan.selectedModuleIds.includes('orchestration'),
      'Should not select unsupported orchestration module for cursor');
    assert.ok(plan.skippedModuleIds.includes('orchestration'),
      'Should report unsupported orchestration module as skipped');
    assert.strictEqual(plan.targetAdapterId, 'cursor-project');
    assert.strictEqual(plan.targetRoot, path.join(projectRoot, '.cursor'));
    assert.strictEqual(plan.installStatePath, path.join(projectRoot, '.cursor', 'ecc-install-state.json'));
    assert.ok(plan.operations.length > 0, 'Should include scaffold operations');
    assert.ok(
      plan.operations.some(operation => (
        operation.sourceRelativePath === '.cursor'
        && operation.strategy === 'sync-root-children'
      )),
      'Should flatten the native cursor root'
    );
  })) passed++; else failed++;

  if (test('resolves antigravity profiles by skipping incompatible dependency trees', () => {
    const projectRoot = '/workspace/app';
    const plan = resolveInstallPlan({ profileId: 'core', target: 'antigravity', projectRoot });

    assert.deepStrictEqual(plan.selectedModuleIds, ['rules-core', 'agents-core', 'commands-core']);
    assert.ok(plan.skippedModuleIds.includes('hooks-runtime'));
    assert.ok(plan.skippedModuleIds.includes('platform-configs'));
    assert.ok(plan.skippedModuleIds.includes('workflow-quality'));
    assert.strictEqual(plan.targetAdapterId, 'antigravity-project');
    assert.strictEqual(plan.targetRoot, path.join(projectRoot, '.agent'));
  })) passed++; else failed++;

  if (test('resolves explicit modules with dependency expansion', () => {
    const plan = resolveInstallPlan({ moduleIds: ['security'] });
    assert.ok(plan.selectedModuleIds.includes('security'), 'Should include requested module');
    assert.ok(plan.selectedModuleIds.includes('workflow-quality'),
      'Should include transitive dependency');
    assert.ok(plan.selectedModuleIds.includes('platform-configs'),
      'Should include nested dependency');
  })) passed++; else failed++;

  if (test('validates explicit module IDs against the real manifest catalog', () => {
    const moduleIds = validateInstallModuleIds(['security', 'security', 'platform-configs']);
    assert.deepStrictEqual(moduleIds, ['security', 'platform-configs']);
    assert.throws(
      () => validateInstallModuleIds(['ghost-module']),
      /Unknown install module: ghost-module/
    );
  })) passed++; else failed++;

  if (test('resolves legacy compatibility selections into manifest module IDs', () => {
    const selection = resolveLegacyCompatibilitySelection({
      target: 'cursor',
      legacyLanguages: ['typescript', 'go', 'golang'],
    });

    assert.deepStrictEqual(selection.legacyLanguages, ['typescript', 'go', 'golang']);
    assert.ok(selection.moduleIds.includes('rules-core'));
    assert.ok(selection.moduleIds.includes('agents-core'));
    assert.ok(selection.moduleIds.includes('commands-core'));
    assert.ok(selection.moduleIds.includes('hooks-runtime'));
    assert.ok(selection.moduleIds.includes('platform-configs'));
    assert.ok(selection.moduleIds.includes('workflow-quality'));
    assert.ok(selection.moduleIds.includes('framework-language'));
  })) passed++; else failed++;

  if (test('resolves rust legacy compatibility into framework-language module', () => {
    const selection = resolveLegacyCompatibilitySelection({
      target: 'cursor',
      legacyLanguages: ['rust'],
    });

    assert.ok(selection.moduleIds.includes('rules-core'));
    assert.ok(selection.moduleIds.includes('framework-language'),
      'rust should resolve to framework-language module');
  })) passed++; else failed++;

  if (test('resolves cpp legacy compatibility into framework-language module', () => {
    const selection = resolveLegacyCompatibilitySelection({
      target: 'cursor',
      legacyLanguages: ['cpp'],
    });

    assert.ok(selection.moduleIds.includes('rules-core'));
    assert.ok(selection.moduleIds.includes('framework-language'),
      'cpp should resolve to framework-language module');
  })) passed++; else failed++;

  if (test('resolves csharp legacy compatibility into framework-language module', () => {
    const selection = resolveLegacyCompatibilitySelection({
      target: 'cursor',
      legacyLanguages: ['csharp'],
    });

    assert.ok(selection.moduleIds.includes('rules-core'));
    assert.ok(selection.moduleIds.includes('framework-language'),
      'csharp should resolve to framework-language module');
  })) passed++; else failed++;

  if (test('keeps antigravity legacy compatibility selections target-safe', () => {
    const selection = resolveLegacyCompatibilitySelection({
      target: 'antigravity',
      legacyLanguages: ['typescript'],
    });

    assert.deepStrictEqual(selection.moduleIds, ['rules-core', 'agents-core', 'commands-core']);
  })) passed++; else failed++;

  if (test('rejects unknown legacy compatibility languages', () => {
    assert.throws(
      () => resolveLegacyCompatibilitySelection({
        target: 'cursor',
        legacyLanguages: ['brainfuck'],
      }),
      /Unknown legacy language: brainfuck/
    );
  })) passed++; else failed++;

  if (test('resolves included and excluded user-facing components', () => {
    const plan = resolveInstallPlan({
      profileId: 'core',
      includeComponentIds: ['capability:security'],
      excludeComponentIds: ['capability:orchestration'],
      target: 'claude',
    });

    assert.deepStrictEqual(plan.includedComponentIds, ['capability:security']);
    assert.deepStrictEqual(plan.excludedComponentIds, ['capability:orchestration']);
    assert.ok(plan.selectedModuleIds.includes('security'), 'Should include modules from selected components');
    assert.ok(!plan.selectedModuleIds.includes('orchestration'), 'Should exclude modules from excluded components');
    assert.ok(plan.excludedModuleIds.includes('orchestration'),
      'Should report modules removed by excluded components');
  })) passed++; else failed++;

  if (test('fails when a selected component depends on an excluded component module', () => {
    assert.throws(
      () => resolveInstallPlan({
        includeComponentIds: ['capability:social'],
        excludeComponentIds: ['capability:content'],
      }),
      /depends on excluded module business-content/
    );
  })) passed++; else failed++;

  if (test('throws on unknown install profile', () => {
    assert.throws(
      () => resolveInstallPlan({ profileId: 'ghost-profile' }),
      /Unknown install profile/
    );
  })) passed++; else failed++;

  if (test('throws on unknown install target', () => {
    assert.throws(
      () => resolveInstallPlan({ profileId: 'core', target: 'not-a-target' }),
      /Unknown install target/
    );
  })) passed++; else failed++;

  if (test('skips a requested module when its dependency chain does not support the target', () => {
    const repoRoot = createTestRepo();
    writeJson(path.join(repoRoot, 'manifests', 'install-modules.json'), {
      version: 1,
      modules: [
        {
          id: 'parent',
          kind: 'skills',
          description: 'Parent',
          paths: ['parent'],
          targets: ['claude'],
          dependencies: ['child'],
          defaultInstall: false,
          cost: 'light',
          stability: 'stable'
        },
        {
          id: 'child',
          kind: 'skills',
          description: 'Child',
          paths: ['child'],
          targets: ['cursor'],
          dependencies: [],
          defaultInstall: false,
          cost: 'light',
          stability: 'stable'
        }
      ]
    });
    writeJson(path.join(repoRoot, 'manifests', 'install-profiles.json'), {
      version: 1,
      profiles: {
        core: { description: 'Core', modules: ['parent'] }
      }
    });

    const plan = resolveInstallPlan({ repoRoot, profileId: 'core', target: 'claude' });
    assert.deepStrictEqual(plan.selectedModuleIds, []);
    assert.deepStrictEqual(plan.skippedModuleIds, ['parent']);
    cleanupTestRepo(repoRoot);
  })) passed++; else failed++;

  console.log(`\nResults: Passed: ${passed}, Failed: ${failed}`);
  process.exit(failed > 0 ? 1 : 0);
}

runTests();