package com.jflyfox.api.service;

import com.jfinal.log.Log;
import com.jflyfox.api.constant.ApiConstant;
import com.jflyfox.api.form.ApiForm;
import com.jflyfox.api.form.ApiResp;
import com.jflyfox.api.util.ApiUtils;
import com.jflyfox.jfinal.base.BaseService;
import com.jflyfox.system.config.ConfigCache;
import com.jflyfox.util.ReflectionUtils;

import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.List;

/**
 * API实现入口
 * <p>
 * 2016年9月29日 上午11:44:56 flyfox 369191470@qq.com
 */
public class ApiService extends BaseService {

    private final static Log log = Log.getLog(ApiService.class);
    private static List<String> methodList;

    static {
        methodList = methodList();
    }

    public static List<String> methodList() {
        List<String> methodList = new ArrayList<String>();
        Method[] methods = IApiLogic.class.getMethods();
        for (int i = 0; i < methods.length; i++) {
            Class<?>[] params = methods[i].getParameterTypes();
            if (params.length == 1 && (params[0] == ApiForm.class)) {
                methodList.add(methods[i].getName());
            }
        }
        return methodList;
    }

    public IApiLogic getApiLogic(ApiForm form) {
        IApiLogic apiLogic = ApiUtils.getApiLogic(form);
        return apiLogic;
    }

    /**
     * 接口方法入口
     * <p>
     * 2016年10月3日 下午1:37:58 flyfox 369191470@qq.com
     *
     * @param form
     * @return
     */
    public ApiResp action(ApiForm form) {
        try {
            //
            if (methodList.contains(form.getMethod())) {

                // 登陆验证标识
                boolean validFlag = ConfigCache.getValueToBoolean("API.LOGIN.VALID");
                if (validFlag) {
                    // 先进行登陆验证。如果验证失败，直接返回错误
                    ApiResp validResp = getApiLogic(form).valid(form);
                    if (validResp.getCode() != ApiConstant.CODE_SUCCESS) {
                        return validResp;
                    }
                }

                // 调用接口方法，利用反射更简洁
                ApiResp apiResp = (ApiResp) ReflectionUtils.invokeMethod(getApiLogic(form), form.getMethod(), //
                        new Class<?>[]{ApiForm.class}, new Object[]{form});
                return apiResp;
            }

            return ApiUtils.getMethodError(form);
        } catch (Exception e) {
            log.error("action handler error", e);
            return ApiUtils.getMethodHandlerError(form);
        }
    }

}