import { describe, expect, it } from 'vitest';
import { ELEMENT_CODECS } from '../src/event-converter/element-codecs';
import type { MessageElement } from '@snowluma/protocol/events';

// The receive-side flash_file codec (#199/#200). Sending is a separate action
// (send_flash_msg), so there is no fromSegment.
describe('flash_file element → OneBot segment (#199/#200)', () => {
    it('maps filesetId/fileName/sceneType/thumbUrl → file_set_id/title/scene_type/thumb', async () => {
        const el: MessageElement = {
            type: 'flash_file',
            filesetId: 'fs-1',
            fileName: 'a.pdf',
            sceneType: 2,
            thumbUrl: 'https://example.test/cover.jpg',
        };
        const seg = await ELEMENT_CODECS.flash_file!.toSegment!(el, {} as never);
        expect(seg).toEqual({
            type: 'flash_file',
            data: {
                title: 'a.pdf',
                file_set_id: 'fs-1',
                scene_type: 2,
                thumb: 'https://example.test/cover.jpg',
            },
        });
    });

    it('defaults missing fields to empty / 0', async () => {
        const seg = await ELEMENT_CODECS.flash_file!.toSegment!(
            { type: 'flash_file' } as MessageElement,
            {} as never,
        );
        expect(seg).toEqual({
            type: 'flash_file',
            data: { title: '', file_set_id: '', scene_type: 0, thumb: '' },
        });
    });

    it('is receive-only (no fromSegment)', () => {
        expect(ELEMENT_CODECS.flash_file!.fromSegment).toBeUndefined();
    });
});