import * as ImageManipulator from 'expo-image-manipulator';
import { confirmUpload, getUploadUrl } from '../background-uploader/api';
import { ExtendedAsset } from '../background-uploader/types';
import { uploadFile } from '../background-uploader/uploader';
import { compressImage } from '../image-process/imageCompress';

/**
 * @description 从视频资源创建缩略图文件
 * @param asset 媒体资源
 * @param width 缩略图宽度，默认为 300
 * @returns 返回一个包含缩略图的 File 对象
 */
export const createVideoThumbnailFile = async (asset: { uri: string }, width: number = 300): Promise<File> => {
    const thumbnailResult = await ImageManipulator.manipulateAsync(
        asset.uri,
        [{ resize: { width } }],
        { compress: 0.7, format: ImageManipulator.SaveFormat.WEBP }
    );

    const response = await fetch(thumbnailResult.uri);
    const blob = await response.blob();

    return new File([blob], `thumb_${Date.now()}.webp`, { type: 'image/webp' });
};

// 提取视频的首帧进行压缩并上传
export const uploadVideoThumbnail = async (asset: ExtendedAsset) => {
    try {
        const manipResult = await compressImage(asset.uri);
        const response = await fetch(manipResult.uri);
        const blob = await response.blob();
        const filename = asset.filename ?
            `compressed_${asset.filename}` :
            `image_${Date.now()}_compressed.jpg`;
        const compressedFile = new File([blob], filename, { type: 'image/jpeg' });

        const { upload_url, file_id } = await getUploadUrl(compressedFile, {
            originalUri: asset.uri,
            creationTime: asset.creationTime,
            mediaType: 'image',
            isCompressed: true
        });

        await uploadFile(compressedFile, upload_url);
        await confirmUpload(file_id);

        return { success: true, file_id };
    } catch (error) {
        return { success: false, error };
    }
};