import { describe, it, expect } from 'vitest';
import {
  parseThumbprintString,
  addWindowsSigningToOverride,
  addMacosAdhocToOverride,
  type TauriOverrideConfig,
} from './signing-config.js';

// ─── parseThumbprintString ──────────────────────────────────────────────────

describe('parseThumbprintString', () => {
  it('returns the uppercased thumbprint when given valid 40-hex input', () => {
    const raw = 'abcdef0123456789abcdef0123456789abcdef01';
    expect(parseThumbprintString(raw)).toBe(
      'ABCDEF0123456789ABCDEF0123456789ABCDEF01',
    );
  });

  it('strips surrounding whitespace and trailing newline (PowerShell output shape)', () => {
    const raw = '  ABCDEF0123456789ABCDEF0123456789ABCDEF01\r\n';
    expect(parseThumbprintString(raw)).toBe(
      'ABCDEF0123456789ABCDEF0123456789ABCDEF01',
    );
  });

  it('removes embedded whitespace inside the thumbprint (some clipboards introduce spaces)', () => {
    const raw = 'AB CD EF 01 23 45 67 89 AB CD EF 01 23 45 67 89 AB CD EF 01';
    expect(parseThumbprintString(raw)).toBe(
      'ABCDEF0123456789ABCDEF0123456789ABCDEF01',
    );
  });

  it('throws when the thumbprint is shorter than 40 chars', () => {
    expect(() => parseThumbprintString('ABCDEF')).toThrow(
      /must be 40 hex characters/i,
    );
  });

  it('throws when the thumbprint contains non-hex characters', () => {
    const raw = 'ZZCDEF0123456789ABCDEF0123456789ABCDEF01';
    expect(() => parseThumbprintString(raw)).toThrow(/must be 40 hex characters/i);
  });

  it('throws on empty input', () => {
    expect(() => parseThumbprintString('')).toThrow(/empty/i);
    expect(() => parseThumbprintString('   ')).toThrow(/empty/i);
  });
});

// ─── addWindowsSigningToOverride ────────────────────────────────────────────

describe('addWindowsSigningToOverride', () => {
  const VALID_THUMBPRINT = 'ABCDEF0123456789ABCDEF0123456789ABCDEF01';

  it('writes certificateThumbprint + sensible defaults when no options given', () => {
    const input: TauriOverrideConfig = { build: { beforeBuildCommand: '' } };
    const out = addWindowsSigningToOverride(input, VALID_THUMBPRINT);

    expect(out.bundle?.windows?.certificateThumbprint).toBe(VALID_THUMBPRINT);
    expect(out.bundle?.windows?.digestAlgorithm).toBe('sha256');
    expect(out.bundle?.windows?.timestampUrl).toBe(
      'http://timestamp.digicert.com',
    );
  });

  it('preserves existing top-level fields (build, app, etc.)', () => {
    const input: TauriOverrideConfig = {
      build: { beforeBuildCommand: 'echo hello' },
      app: { security: { csp: 'default-src self' } },
    };
    const out = addWindowsSigningToOverride(input, VALID_THUMBPRINT);

    expect(out.build).toEqual({ beforeBuildCommand: 'echo hello' });
    expect(out.app).toEqual({ security: { csp: 'default-src self' } });
  });

  it('preserves existing bundle.windows fields not related to signing', () => {
    const input: TauriOverrideConfig = {
      bundle: {
        windows: { nsis: { installMode: 'currentUser' } },
      },
    };
    const out = addWindowsSigningToOverride(input, VALID_THUMBPRINT);

    expect(out.bundle?.windows?.nsis).toEqual({ installMode: 'currentUser' });
    expect(out.bundle?.windows?.certificateThumbprint).toBe(VALID_THUMBPRINT);
  });

  it('overrides custom digestAlgorithm and timestampUrl when options provided', () => {
    const out = addWindowsSigningToOverride({}, VALID_THUMBPRINT, {
      digestAlgorithm: 'sha384',
      timestampUrl: 'http://timestamp.sectigo.com',
    });

    expect(out.bundle?.windows?.digestAlgorithm).toBe('sha384');
    expect(out.bundle?.windows?.timestampUrl).toBe(
      'http://timestamp.sectigo.com',
    );
  });

  it('does not mutate the input config (immutability invariant)', () => {
    const input: TauriOverrideConfig = { build: { beforeBuildCommand: '' } };
    const inputSnapshot = JSON.parse(JSON.stringify(input));
    addWindowsSigningToOverride(input, VALID_THUMBPRINT);
    expect(input).toEqual(inputSnapshot);
  });

  it('is idempotent — applying twice with the same thumbprint yields equal output', () => {
    const input: TauriOverrideConfig = {};
    const once = addWindowsSigningToOverride(input, VALID_THUMBPRINT);
    const twice = addWindowsSigningToOverride(once, VALID_THUMBPRINT);
    expect(twice).toEqual(once);
  });

  it('replaces an old thumbprint when called with a new one (cert rotation)', () => {
    const input: TauriOverrideConfig = {};
    const v1 = addWindowsSigningToOverride(input, VALID_THUMBPRINT);
    const newThumb = '1234567890ABCDEF1234567890ABCDEF12345678';
    const v2 = addWindowsSigningToOverride(v1, newThumb);
    expect(v2.bundle?.windows?.certificateThumbprint).toBe(newThumb);
  });

  it('rejects an invalid thumbprint up front', () => {
    expect(() =>
      addWindowsSigningToOverride({}, 'too-short'),
    ).toThrow(/must be 40 hex characters/i);
  });
});

// ─── addMacosAdhocToOverride ────────────────────────────────────────────────

describe('addMacosAdhocToOverride', () => {
  it('sets bundle.macOS.signingIdentity to "-" (ad-hoc sign sentinel)', () => {
    const out = addMacosAdhocToOverride({});
    expect(out.bundle?.macOS?.signingIdentity).toBe('-');
  });

  it('preserves existing top-level and bundle fields', () => {
    const input: TauriOverrideConfig = {
      build: { beforeBuildCommand: 'echo' },
      bundle: {
        windows: { certificateThumbprint: 'AB'.repeat(20) },
      },
    };
    const out = addMacosAdhocToOverride(input);

    expect(out.build).toEqual({ beforeBuildCommand: 'echo' });
    expect(out.bundle?.windows?.certificateThumbprint).toBe('AB'.repeat(20));
    expect(out.bundle?.macOS?.signingIdentity).toBe('-');
  });

  it('does not mutate the input config', () => {
    const input: TauriOverrideConfig = { bundle: { macOS: {} } };
    const snapshot = JSON.parse(JSON.stringify(input));
    addMacosAdhocToOverride(input);
    expect(input).toEqual(snapshot);
  });

  it('is idempotent', () => {
    const once = addMacosAdhocToOverride({});
    const twice = addMacosAdhocToOverride(once);
    expect(twice).toEqual(once);
  });

  it('preserves additional macOS fields (entitlements, providerShortName)', () => {
    const input: TauriOverrideConfig = {
      bundle: {
        macOS: { entitlements: './ent.plist', providerShortName: 'TEAM' },
      },
    };
    const out = addMacosAdhocToOverride(input);

    expect(out.bundle?.macOS?.entitlements).toBe('./ent.plist');
    expect(out.bundle?.macOS?.providerShortName).toBe('TEAM');
    expect(out.bundle?.macOS?.signingIdentity).toBe('-');
  });
});