export class AssetProvider {
    constructor() {
        this.assets = [];
    }

    injectAssets(assets) {
        this.assets = assets;
    }

    url(name) {
        const asset = this.assets.find((x) => x.name === name);

        if (!asset) {
            throw new Error(`Asset with name '${name}' does not exist`);
        }

        return URL.createObjectURL(asset.file);
    }

    fullUrl(name) {
        return new Promise((resolve, reject) => {
            const asset = this.assets.find((x) => x.name === name);

            if (!asset) {
                throw new Error(`Asset with name '${name}' does not exist`);
            }

            const reader = new FileReader();
            reader.readAsDataURL(asset.file);

            reader.onload = () => resolve(reader.result);
            reader.onerror = () => reject(reader.error);
        });
    }

    async getAll() {
        const result = {};

        for (const asset of this.assets) {
            result[asset.name] = await this.fullUrl(asset.name);
        }

        return result;
    }
}