import { describe, it, expect } from 'vitest';
import fs from 'node:fs';
import path from 'node:path';
import semver from 'semver';
import { RETIRED_NOTICE_IDS, SYSTEM_NOTICES } from '../../../src/systemNotices/registry.js';
import { isNoticeVersionActive } from '../../../src/systemNotices/service.js';

/** Collect all actionIds registered via registerNoticeAction() in client source files. */
function collectRegisteredActionIds(): Set<string> {
  const clientSrc = path.resolve(__dirname, '../../../../client/src');
  const ids = new Set<string>();
  const queue = [clientSrc];
  while (queue.length) {
    const dir = queue.pop()!;
    for (const entry of fs.readdirSync(dir, { withFileTypes: true })) {
      const full = path.join(dir, entry.name);
      if (entry.isDirectory()) { queue.push(full); continue; }
      if (!entry.name.endsWith('noticeActions.ts') && !entry.name.endsWith('noticeActions.js')) continue;
      const src = fs.readFileSync(full, 'utf8');
      for (const m of src.matchAll(/registerNoticeAction\(\s*['"]([^'"]+)['"]/g)) {
        ids.add(m[1]);
      }
    }
  }
  return ids;
}

describe('registry integrity', () => {
  it('has no duplicate ids', () => {
    const ids = SYSTEM_NOTICES.map(n => n.id);
    expect(new Set(ids).size).toBe(ids.length);
  });

  it('all action CTAs reference a registered actionId', () => {
    const registeredActionIds = collectRegisteredActionIds();
    const actionCtaIds = SYSTEM_NOTICES
      .filter(n => n.cta?.kind === 'action')
      .map(n => (n.cta as { actionId: string }).actionId);

    for (const id of actionCtaIds) {
      expect(registeredActionIds, `actionId "${id}" not found in any client noticeActions.ts`).toContain(id);
    }
  });

  it('all publishedAt are valid ISO dates', () => {
    for (const n of SYSTEM_NOTICES) {
      expect(() => new Date(n.publishedAt).toISOString()).not.toThrow();
    }
  });

  it('minVersion and maxVersion are valid semver when set, and minVersion <= maxVersion when both set', () => {
    for (const n of SYSTEM_NOTICES) {
      if (n.minVersion !== undefined) {
        expect(semver.valid(n.minVersion), `notice "${n.id}" has invalid minVersion "${n.minVersion}"`).not.toBeNull();
      }
      if (n.maxVersion !== undefined) {
        expect(semver.valid(n.maxVersion), `notice "${n.id}" has invalid maxVersion "${n.maxVersion}"`).not.toBeNull();
      }
      if (n.minVersion && n.maxVersion) {
        expect(
          semver.lte(n.minVersion, n.maxVersion),
          `notice "${n.id}": minVersion ${n.minVersion} > maxVersion ${n.maxVersion}`
        ).toBe(true);
      }
    }
  });

  it('the release notes come back on every upgrade, with no upper bound', () => {
    const release = SYSTEM_NOTICES.find(n => n.id === 'release-notes');
    expect(release).toBeDefined();
    // Nothing on 3.x ships this copy, and the thank-you notice still covers it there.
    expect(isNoticeVersionActive(release!, '3.4.1')).toBe(false);
    // From there on every version carries it, a patch release included, so no
    // install is left with nothing to show because nobody wrote a new window.
    for (const version of ['4.0.0', '4.2.1', '4.3.0', '4.3.1', '4.9.9', '5.0.0', '12.4.0']) {
      expect(isNoticeVersionActive(release!, version), version).toBe(true);
    }
    expect(release!.maxVersion).toBeUndefined();
    // The window alone is not enough: a one-time dismissal would retire it for good
    // the first time somebody closed it.
    expect(release!.recurring).toBe('per-version');
  });

  it('the 4.0.0 release notice is retired and its id stays reserved', () => {
    expect(SYSTEM_NOTICES.some(n => n.id === 'release-4-0-0')).toBe(false);
    expect(RETIRED_NOTICE_IDS).toContain('release-4-0-0');
    for (const id of RETIRED_NOTICE_IDS) {
      expect(SYSTEM_NOTICES.some(n => n.id === id), id).toBe(false);
    }
  });

  it('the thank-you notice hands over to the release modal at 4.0.0', () => {
    const thankYou = SYSTEM_NOTICES.find(n => n.id === 'thank-you-support');
    expect(thankYou).toBeDefined();
    // Both carry the same thank-you and the same two support links, so exactly
    // one of them may be active at any version.
    expect(isNoticeVersionActive(thankYou!, '3.4.1')).toBe(true);
    expect(isNoticeVersionActive(thankYou!, '4.0.0')).toBe(false);

    const release = SYSTEM_NOTICES.find(n => n.id === 'release-notes')!;
    for (const version of ['3.4.1', '4.0.0', '4.0.7', '4.1.0', '4.3.0', '5.0.0']) {
      const active = [thankYou!, release].filter(n => isNoticeVersionActive(n, version));
      expect(active.length, `thank-you and release notes at ${version}`).toBe(1);
    }
  });
});