Author：Mr.柳上原

• 付出不亚于任何的努力
• 愿我们所有的努力，都不会被生活辜负
• 不忘初心，方得始终

react里，请务必自己封装请求方法
好处：1.自定义封装请求方法，能够更好的处理请求结构，做好请求体body的处理等
2.可以使用多种异步数据请求方法，如Promise.then().catch()，async 》 await，try，catch等
3.请求方法的复用性（这才是react的精髓）
4.颗粒化思想，
5.可以简化具体页面的后端请求结构，细致拆分组件，精准定位bug

// 接口封装方法

// 接口验证的公用判断方法
export async function callApi(call) {
    try {
        let response = await call();
        response = (response || {}).data || {};
        return response;
    } catch (e) {
        return { code: "500", message: e.message }
    }
}

// 接口封装
const ApiClient = {
    get(url, useToken = true, qs) {

        const headers = new Headers();
        headers.append('Accept', 'application/json');
        if (useToken) {
            const token = store.getState().oidc.user.access_token;
            headers.append('Authorization', `Bearer ${token}`);
        }
        const options = {
            method: 'GET',
            headers,
            mode: 'cors'
        };
        const params = new URLSearchParams();
        if (qs) {
            Object.keys(qs).forEach(key => params.append(key, qs[key]));
            url = url + "?" + params.toString();
        }


        return fetch(url, options)
            .then((res) => res.json())
            .then((data) => ({ data }))
            .catch((error) => ({ error }));
    },
    getWithnoToken(url, header, qs) {

        const headers = new Headers();
        headers.append('Accept', 'application/json');
        if (header) {
            // headers.append('Authorization', `Bearer ${token}`);
            // console.log("userToken:", `Bearer ${token}`);
            Object.keys(header).forEach(key => headers.append(key, header[key]))
        }
        const options = {
            method: 'GET',
            headers,
            mode: 'cors'
        };
        const params = new URLSearchParams();
        if (qs) {
            Object.keys(qs).forEach(key => params.append(key, qs[key]));
            url = url + "?" + params.toString();
        }
        return fetch(url, options)
            .then((res) => res.json())
            .then((data) => ({ data }))
            .catch((error) => ({ error }));
    },
    post(url, body, qs, method = 'POST') {
        const token = store.getState().oidc.user.access_token;
        const headers = new Headers();
        headers.append('Content-Type', 'application/json');
        headers.append('Accept', 'application/json');
        headers.append('Authorization', `Bearer ${token}`);

        var postData = undefined;
        if (body) {
            postData = JSON.stringify(body);
        }

        const options = {
            method: method,
            headers,
            mode: 'cors',
            body: postData
        };

        const params = new URLSearchParams();
        if (qs) {
            Object.keys(qs).forEach(key => params.append(key, qs[key]));
            url = url + "?" + params.toString();
        }

        return fetch(url, options)
            .then((res) => res.json())
            .then((data) => ({ data }))
            .catch((error) => ({ error }));
    },
    postForm(url, body, qs, method = 'POST', headerSetter) {
        const headers = new Headers();
        headers.append('Accept', 'application/json');
        if (headerSetter) {
            headerSetter(headers);
        }
        const params = new URLSearchParams();
        if (qs) {
            Object.keys(qs).forEach(key => params.append(key, qs[key]));
            url = url + "?" + params.toString();
        }
        //   headers.append('Authorization', `Bearer ${token}`);


        const options = {
            method: method,
            headers,
            mode: 'cors'
        };
        var fd = new FormData();
        if (body) {
            for (var k in body) {
                if (body.hasOwnProperty(k)) {
                    fd.append(k, body[k]);
                }
            }
            options.body = fd;
        }


        return fetch(url, options)
            .then((res) => res.json())
            .then((data) => ({ data }));
    },
    postFormUrlEncode(url, body, qs, method = 'POST', headerSetter) {
        const headers = new Headers();
        headers.append('Content-Type', 'application/x-www-form-urlencoded');
        headers.append('Accept', 'application/json');
        if (headerSetter) {
            headerSetter(headers);
        }
        const params = new URLSearchParams();
        if (qs) {
            Object.keys(qs).forEach(key => params.append(key, qs[key]));
            url = url + "?" + params.toString();
        }

        const options = {
            method: method,
            headers,
            mode: 'cors'
        };
        if (body) {
            const bodyParams = new URLSearchParams();

            Object.keys(body).forEach(key => bodyParams.append(key, body[key]));
            options.body = bodyParams.toString();

        }

        return fetch(url, options)
            .then((res) => res.json())
            .then((data) => ({ data }));
    },
    put(url, body, qs, method = 'PUT') {
        const token = store.getState().oidc.user.access_token;
        const headers = new Headers();
        headers.append('Content-Type', 'application/json');
        headers.append('Accept', 'application/json');
        headers.append('Authorization', `Bearer ${token}`);

        var postData = undefined;
        if (body) {
            postData = JSON.stringify(body);
        }

        const options = {
            method: method,
            headers,
            mode: 'cors',
            body: postData
        };

        const params = new URLSearchParams();
        if (qs) {
            Object.keys(qs).forEach(key => params.append(key, qs[key]));
            url = url + "?" + params.toString();
        }
        return fetch(url, options)
            .then((res) => res.json())
            .then((data) => ({ data }))
            .catch((error) => ({ error }));
    },
    del(url, body, qs, method = 'DELETE') {
        const token = store.getState().oidc.user.access_token;
        const headers = new Headers();
        headers.append('Content-Type', 'application/json');
        headers.append('Accept', 'application/json');
        headers.append('Authorization', `Bearer ${token}`);

        var postData = undefined;
        if (body) {
            postData = JSON.stringify(body);
        }

        const options = {
            method: method,
            headers,
            mode: 'cors',
            body: postData
        };

        const params = new URLSearchParams();
        if (qs) {
            Object.keys(qs).forEach(key => params.append(key, qs[key]));
            url = url + "?" + params.toString();
        }
        return fetch(url, options)
            .then((res) => res.json())
            .then((data) => ({ data }))
            .catch((error) => ({ error }));
    }
}


export default ApiClient;