import { describe, expect, it, vi } from 'vitest';
import { selectServerLogLevel, TRACE_CONFIRMATION_WARNINGS } from '../src/lib/server-log-level';

describe('selectServerLogLevel', () => {
    it('keeps every required warning in the TRACE confirmation', () => {
        expect(TRACE_CONFIRMATION_WARNINGS).toEqual([
            'TRACE 会产生非常大量的数据。',
            'TRACE 可能包含未经脱敏的隐私数据和凭据。',
            'TRACE 不适合长时间开启。',
            'TRACE 仅用于小规模问题复现和 bug 反馈。',
        ]);
    });

    it('requires confirmation before entering TRACE from a normal level', () => {
        const applyLevel = vi.fn();
        const requestTraceConfirmation = vi.fn();

        selectServerLogLevel({
            currentLevel: 'info',
            nextLevel: 'trace',
            applyLevel,
            requestTraceConfirmation,
        });

        expect(requestTraceConfirmation).toHaveBeenCalledOnce();
        expect(applyLevel).not.toHaveBeenCalled();
    });

    it('applies ordinary level transitions immediately', () => {
        const applyLevel = vi.fn();
        const requestTraceConfirmation = vi.fn();

        selectServerLogLevel({
            currentLevel: 'trace',
            nextLevel: 'info',
            applyLevel,
            requestTraceConfirmation,
        });

        expect(applyLevel).toHaveBeenCalledExactlyOnceWith('info');
        expect(requestTraceConfirmation).not.toHaveBeenCalled();
    });

    it('requires confirmation each time TRACE is re-entered', () => {
        const applyLevel = vi.fn();
        const requestTraceConfirmation = vi.fn();

        selectServerLogLevel({
            currentLevel: 'debug',
            nextLevel: 'trace',
            applyLevel,
            requestTraceConfirmation,
        });
        selectServerLogLevel({
            currentLevel: 'info',
            nextLevel: 'trace',
            applyLevel,
            requestTraceConfirmation,
        });

        expect(requestTraceConfirmation).toHaveBeenCalledTimes(2);
        expect(applyLevel).not.toHaveBeenCalled();
    });
});