import { compareReleaseVersions, parseReleaseVersion } from '@tessera/shared';
import { afterEach, describe, expect, it, vi } from 'vitest';
import { getRunningRelease } from './app-version';

/**
 * Freigegebene Versionen (quick-260925-bow, D-02/D-06).
 *
 * `parseReleaseVersion` und `compareReleaseVersions` stehen EINMAL in
 * `packages/shared/src/index.ts` und werden von API und Web benutzt. Getestet
 * wird hier in der API-Suite, weil `packages/shared` keinen eigenen Testlauf
 * hat (Vorbild `widget-module-map.spec.ts`).
 *
 * `getRunningRelease()` ist die einzige Quelle der laufenden Version fuer das
 * "Was ist neu"-Fenster: `APP_VERSION` der API, auf X.Y.Z gekuerzt.
 */

afterEach(() => {
  vi.unstubAllEnvs();
});

describe('parseReleaseVersion (quick-260925-bow)', () => {
  it.each([
    ['v10.2.3', '10.2.3'],
    ['10.2.3', '10.2.3'],
    ['v10.2.3-5-gabc1234', '10.2.3'],
    ['10.2.3-12-g0123456789abcdef', '10.2.3'],
    ['010.02.3', '10.2.3'],
    ['1.4.0', '1.4.0'],
  ])('%s → %s', (raw, expected) => {
    expect(parseReleaseVersion(raw)).toBe(expected);
  });

  it.each([
    ['dev'],
    [''],
    ['abc1234'],
    ['10.2'],
    ['10.2.3-rc.1'],
    ['10.2.3-dirty'],
    [' 10.2.3'],
    ['10.2.3 '],
    ['V10.2.3'],
    ['vv10.2.3'],
    ['10.2.3.4'],
    ['1234567.0.0'],
    ['10.2.3-5-gxyz1234'],
    ['10.2.3-5-gabc'],
    ['10.2.3-g0123456'],
  ])('%j → null', (raw) => {
    expect(parseReleaseVersion(raw)).toBeNull();
  });

  it('Eingaben ueber 64 Zeichen ergeben null, auch wenn das Muster sonst passen wuerde', () => {
    const long = `1.2.3-5-g${'a'.repeat(40)}`;
    expect(long.length).toBeLessThanOrEqual(64);
    expect(parseReleaseVersion(long)).toBe('1.2.3');
    expect(parseReleaseVersion(`${'1'.repeat(70)}.0.0`)).toBeNull();
    expect(parseReleaseVersion('x'.repeat(10_000))).toBeNull();
  });

  it('Nicht-Zeichenketten ergeben null statt eines Fehlers', () => {
    expect(parseReleaseVersion(undefined as unknown as string)).toBeNull();
    expect(parseReleaseVersion(null as unknown as string)).toBeNull();
    expect(parseReleaseVersion(123 as unknown as string)).toBeNull();
  });
});

describe('compareReleaseVersions (quick-260925-bow)', () => {
  it('vergleicht numerisch, nicht lexikografisch', () => {
    expect(compareReleaseVersions('1.10.0', '1.9.0')).toBe(1);
    expect(compareReleaseVersions('1.9.0', '1.10.0')).toBe(-1);
  });

  it('die hoehere Hauptversion gewinnt', () => {
    expect(compareReleaseVersions('2.0.0', '1.99.99')).toBe(1);
    expect(compareReleaseVersions('1.99.99', '2.0.0')).toBe(-1);
  });

  it('Patch-Stelle entscheidet bei gleicher Haupt- und Nebenversion', () => {
    expect(compareReleaseVersions('1.3.1', '1.3.0')).toBe(1);
  });

  it('gleiche Versionen ergeben 0, auch mit v-Praefix und Describe-Anhang', () => {
    expect(compareReleaseVersions('1.4.0', '1.4.0')).toBe(0);
    expect(compareReleaseVersions('v10.2.3', '10.2.3')).toBe(0);
    expect(compareReleaseVersions('v10.2.3-5-gabc1234', '10.2.3')).toBe(0);
  });

  it('wirft bei nicht parsebarer Eingabe', () => {
    expect(() => compareReleaseVersions('dev', '1.0.0')).toThrow();
    expect(() => compareReleaseVersions('1.0.0', 'abc1234')).toThrow();
  });
});

describe('getRunningRelease (quick-260925-bow)', () => {
  it('liest APP_VERSION und kuerzt den Describe-Stand auf X.Y.Z', () => {
    vi.stubEnv('APP_VERSION', 'v10.2.3-5-gabc1234');
    expect(getRunningRelease()).toBe('10.2.3');
  });

  it('ein Tag-Stand ergibt die Version selbst', () => {
    vi.stubEnv('APP_VERSION', 'v1.4.0');
    expect(getRunningRelease()).toBe('1.4.0');
  });

  it('dev ergibt null', () => {
    vi.stubEnv('APP_VERSION', 'dev');
    expect(getRunningRelease()).toBeNull();
  });

  it('ungesetzt oder leer ergibt null', () => {
    vi.stubEnv('APP_VERSION', undefined);
    expect(getRunningRelease()).toBeNull();
    vi.stubEnv('APP_VERSION', '');
    expect(getRunningRelease()).toBeNull();
  });

  it('ein blosser Commit-Stempel ergibt null', () => {
    vi.stubEnv('APP_VERSION', 'abc1234');
    expect(getRunningRelease()).toBeNull();
  });
});