import {describe, expect, it} from 'vitest';
import {
	ACCESS_ROLE,
	appsOf,
	isAppPermission,
	isAppRole,
	toPermissions
} from '../../src/models/admin/admin.schema.js';

/**
 * The permission model is (app, role). These tests pin the two properties the
 * rest of the module leans on: that the older `['tickets']` shape still means
 * "tickets at the access role", and that nothing outside APP_ROLES gets in.
 */

describe('toPermissions', () => {
	it('reads the full (app, role) form', () => {
		expect(toPermissions([{app: 'tickets', role: 'access'}])).toEqual([
			{app: 'tickets', role: 'access'}
		]);
	});

	it('reads a plain app list as that app at the access role', () => {
		expect(toPermissions(['feedback', 'admin'])).toEqual([
			{app: 'feedback', role: ACCESS_ROLE},
			{app: 'admin', role: ACCESS_ROLE}
		]);
	});

	it('accepts the two forms mixed, which is what a half-migrated caller sends', () => {
		expect(toPermissions(['feedback', {app: 'tickets', role: 'access'}])).toEqual([
			{app: 'feedback', role: ACCESS_ROLE},
			{app: 'tickets', role: ACCESS_ROLE}
		]);
	});

	it('drops duplicates of the same (app, role)', () => {
		expect(toPermissions(['tickets', {app: 'tickets', role: 'access'}])).toEqual([
			{app: 'tickets', role: ACCESS_ROLE}
		]);
	});

	it('rejects rather than silently dropping an unknown app', () => {
		// Silently ignoring it would let "grant calendar + nonsense" look like a
		// success while granting less than the caller asked for.
		expect(toPermissions(['calendar', 'nonsense'])).toBeNull();
	});

	it('rejects an unknown role', () => {
		expect(toPermissions([{app: 'tickets', role: 'refund'}])).toBeNull();
	});

	it('rejects anything that is not a list', () => {
		expect(toPermissions('admin')).toBeNull();
		expect(toPermissions(null)).toBeNull();
		expect(toPermissions({app: 'admin', role: 'access'})).toBeNull();
	});

	it('reads an empty list as "no permissions", not as invalid', () => {
		expect(toPermissions([])).toEqual([]);
	});
});

describe('isAppRole', () => {
	it('accepts the access role for every app', () => {
		expect(isAppRole('admin', ACCESS_ROLE)).toBe(true);
		expect(isAppRole('calendar', ACCESS_ROLE)).toBe(true);
	});

	it('rejects a role that does not exist yet', () => {
		expect(isAppRole('tickets', 'refund')).toBe(false);
	});
});

describe('isAppPermission', () => {
	it('needs both halves to be valid', () => {
		expect(isAppPermission({app: 'tickets', role: ACCESS_ROLE})).toBe(true);
		expect(isAppPermission({app: 'tickets'})).toBe(false);
		expect(isAppPermission({role: ACCESS_ROLE})).toBe(false);
		expect(isAppPermission(null)).toBe(false);
	});
});

describe('appsOf', () => {
	it('collapses several roles on one app to a single entry', () => {
		// The point of the derived list: a user with two roles on tickets has
		// access to tickets once, not twice.
		const apps = appsOf([
			{app: 'tickets', role: ACCESS_ROLE},
			{app: 'tickets', role: 'future-role'},
			{app: 'admin', role: ACCESS_ROLE}
		]);
		expect(apps).toEqual(['tickets', 'admin']);
	});

	it('is empty for no permissions', () => {
		expect(appsOf([])).toEqual([]);
	});
});