import { queryString } from "@dage/utils";
/**
 * 转换 Headers 为 对象形式
 * @param headers
 */
export function headersToObject(headers) {
    return Array.from(headers.entries()).reduce((prev, cur) => {
        const [key, value] = cur;
        prev[key] = value;
        return prev;
    }, {});
}
/**
 * 能携带参数的请求方法
 * @param method
 */
export function methodsHasBody(method) {
    return method !== "GET" && method !== "HEAD";
}
/**
 * 序列化载荷
 * @param headers
 * @param body
 */
export function serializeBody(headers, body) {
    if (body == null) {
        return body;
    }
    if (isArrayBuffer(body) || isBlob(body) || isFormData(body)) {
        return body;
    }
    const contentType = headers["content-type"];
    if (contentType === "application/x-www-form-urlencoded") {
        // 序列化为查询字符串
        return queryString.stringify(body);
    }
    return JSON.stringify(body);
}
export function isFormData(value) {
    return typeof FormData !== "undefined" && value instanceof FormData;
}
export function isBlob(value) {
    return typeof Blob !== "undefined" && value instanceof Blob;
}
export function isArrayBuffer(value) {
    return typeof ArrayBuffer !== "undefined" && value instanceof ArrayBuffer;
}
/**
 * 根据body生成对应的contentType
 * @param body http body
 */
export function detectContentType(body) {
    if (body == null) {
        return null;
    }
    if (isFormData(body) || isArrayBuffer(body)) {
        return null;
    }
    if (isBlob(body)) {
        return body.type || null;
    }
    if (typeof body === "object" ||
        typeof body === "number" ||
        Array.isArray(body)) {
        return "application/json;charset=UTF-8";
    }
    return "application/x-www-form-urlencoded;charset=UTF-8";
}
export function getResponseType(config) {
    const meta = config.meta;
    return (meta === null || meta === void 0 ? void 0 : meta.responseType) || "json";
}
export function serializeResponseBody(res, config) {
    const responseType = getResponseType(config);
    switch (responseType) {
        case "arrayBuffer":
            return res.arrayBuffer().then((data) => ({ data }));
        case "blob":
            return res.blob().then((data) => ({ data }));
        case "json":
            return res.json();
        case "text":
            return res.text().then((data) => ({ data }));
        default:
            return Promise.reject(new Error("传入的meta.responseType 不符合规范"));
    }
}