import { fromBase64 } from "@smithy/core/serde";
export const streamCollector = async (stream) => {
    if ((typeof Blob === "function" && stream instanceof Blob) || stream.constructor?.name === "Blob") {
        if (Blob.prototype.arrayBuffer !== undefined) {
            return new Uint8Array(await stream.arrayBuffer());
        }
        return collectBlob(stream);
    }
    return collectStream(stream);
};
async function collectBlob(blob) {
    const base64 = await readToBase64(blob);
    const arrayBuffer = fromBase64(base64);
    return new Uint8Array(arrayBuffer);
}
async function collectStream(stream) {
    const chunks = [];
    const reader = stream.getReader();
    let isDone = false;
    let length = 0;
    while (!isDone) {
        const { done, value } = await reader.read();
        if (value) {
            chunks.push(value);
            length += value.length;
        }
        isDone = done;
    }
    const collected = new Uint8Array(length);
    let offset = 0;
    for (const chunk of chunks) {
        collected.set(chunk, offset);
        offset += chunk.length;
    }
    return collected;
}
function readToBase64(blob) {
    return new Promise((resolve, reject) => {
        const reader = new FileReader();
        reader.onloadend = () => {
            if (reader.readyState !== 2) {
                return reject(new Error("Reader aborted too early"));
            }
            const result = (reader.result ?? "");
            const commaIndex = result.indexOf(",");
            const dataOffset = commaIndex > -1 ? commaIndex + 1 : result.length;
            resolve(result.substring(dataOffset));
        };
        reader.onabort = () => reject(new Error("Read aborted"));
        reader.onerror = () => reject(reader.error);
        reader.readAsDataURL(blob);
    });
}
