import { describe, expect, it } from 'vitest';
import { analyzePickedUploadFiles } from '@/utils/upload/analyzePickedUploadFiles';

const makeFile = (name: string, type: string, size: number): File =>
    new File([new Uint8Array(size)], name, { type });

describe('analyzePickedUploadFiles', () => {
    const maxImageBytes = 100;
    const maxQueueSize = 2;

    it('accepts images within size and queue limits', () => {
        const picked = [makeFile('a.png', 'image/png', 50), makeFile('b.jpg', 'image/jpeg', 80)];

        const result = analyzePickedUploadFiles(picked, maxImageBytes, maxQueueSize);

        expect(result.accepted).toHaveLength(2);
        expect(result.nonImageCount).toBe(0);
        expect(result.oversizedImagesCount).toBe(0);
        expect(result.queueOmittedImagesCount).toBe(0);
    });

    it('skips non-images and oversized files and caps the queue', () => {
        const picked = [
            makeFile('doc.pdf', 'application/pdf', 10),
            makeFile('big.png', 'image/png', 200),
            makeFile('1.png', 'image/png', 10),
            makeFile('2.png', 'image/png', 10),
            makeFile('3.png', 'image/png', 10)
        ];

        const result = analyzePickedUploadFiles(picked, maxImageBytes, maxQueueSize);

        expect(result.accepted.map(f => f.name)).toEqual(['1.png', '2.png']);
        expect(result.nonImageCount).toBe(1);
        expect(result.oversizedImagesCount).toBe(1);
        expect(result.queueOmittedImagesCount).toBe(1);
    });
});