import { describe, expect, it } from 'vitest';

import { SAGE_FLAGS, SagePermissions } from '../src/permissions';

describe('SAGE Permissions', () => {
  it('keeps governance aligned with the on-chain permission bit', () => {
    expect(SAGE_FLAGS.DO_GOVERNANCE).toBe(1n << 47n);
  });

  it('keeps the dedicated mission-treasury admin tier on bit 48', () => {
    expect(SAGE_FLAGS.MANAGE_MISSION_TREASURIES).toBe(1n << 48n);
  });

  it('keeps the mission-treasury tier distinct from MANAGE_MISSIONS (bit 44)', () => {
    expect(SAGE_FLAGS.MANAGE_MISSIONS).toBe(1n << 44n);
    expect(
      SAGE_FLAGS.MANAGE_MISSION_TREASURIES & SAGE_FLAGS.MANAGE_MISSIONS,
    ).toBe(0n);
  });

  it('default permissions are empty', () => {
    const perms = SagePermissions.default();
    const flags = Object.values(SAGE_FLAGS);

    expect(perms.value).toBe(0n);
    expect(perms.toArray()).toEqual([0, 0, 0, 0, 0, 0, 0, 0]);
    flags.forEach((flag) => expect(perms.has(flag)).toBe(false));
  });

  it('all permissions combine every flag without overflow', () => {
    const allCombined = Object.values(SAGE_FLAGS).reduce(
      (acc, flag) => acc | flag,
      0n,
    );
    const perms = SagePermissions.all();
    const flags = Object.values(SAGE_FLAGS);

    expect(perms.value).toBe(allCombined);
    flags.forEach((flag) => expect(perms.has(flag)).toBe(true));
    expect(() => perms.toArray()).not.toThrow();
  });
});