import { ref } from 'vue';

function requestInterceptor(options) {
    const token = uni.getStorageSync("access_token");
    
    options.header = {
        'Authorization': token ? 'Bearer ' + token : '',
        'Content-Type': 'application/json'
    };
    return options;
}

function responseInterceptor(response) {
    if (response.statusCode === 200) {
        const data = response.data;
        
        if (data.status === 'Toke_Error' || data.code === 10001) {
            uni.removeStorageSync("access_token");
            uni.removeStorageSync("refresh_token");
            
            uni.showModal({
                title: '提示',
                content: '登录已过期，请重新登录',
                showCancel: false,
                success: () => {
                    uni.reLaunch({
                        url: '/pages/Login'
                    });
                }
            });
            return Promise.reject(data);
        }
        
        if (data.status === false) {
            uni.showToast({
                title: data.msg || data.meg || '操作失败',
                icon: 'none'
            });
        }
        
        return data;
    } else {
        uni.showToast({
            title: '请求失败，请稍后重试',
            icon: 'none'
        });
        return Promise.reject(response.data);
    }
}

export function useHttp() {
    const isLoading = ref(false);

    function sendRequest(options) {
        isLoading.value = true;
        uni.showLoading({
            title: '加载中'
        });
        
        let processedOptions = requestInterceptor(options);

        return new Promise((resolve, reject) => {
            uni.request({
                ...processedOptions,
                success: (res) => {
                    let processedResponse = responseInterceptor(res);
                    isLoading.value = false;
                    uni.hideLoading();
                    resolve(processedResponse);
                },
                fail: (err) => {
                    isLoading.value = false;
                    uni.hideLoading();
                    uni.showToast({
                        title: '网络异常，请检查网络',
                        icon: 'none'
                    });
                    reject(err);
                }
            });
        });
    }

    return {
        isLoading,
        sendRequest
    };
}