const api_base_url = "https://www.educoder.net/api";
/**
 * https://www.educoder.net的api接口，通过其实现用户与后端进行交互
 */
export class Account{
	static login({session, login, password, autologin, success, fail, complete}) {
		console.log("login");
		let data = {login: login, password: password, autologin: autologin};
		session.request({
			url: api_base_url + "/accounts/login.json",
			method: "POST",
			data: data,
			header: {"content-type": "application/json"},
			success: (res)=>{
				if("status" in res.data && res.data.status<0){
					fail(new Error(res.data.message));
					return;
				}
				console.log("type of success:"+ typeof success);
				if(typeof success == "function") {
					success(res);
				}
			},
			fail: fail,
			complete: complete
		});
	}
	static get_user_info({session, success, fail, complete}){
		let data = {school: 1}
		session.request({
			url: api_base_url + "/users/get_user_info.json",
			method: "GET",
			data: data,
			success: success,
			fail: fail,
			complete: complete
		})
	}
	static get_verification_code({session, login, type, success, fail, complete}){
		let data = {login: login, type: type};
		//@notice： type: 验证码用途 type=1=> 注册 type=2 => 重置密码
		session.request({
			url: api_base_url + "/accounts/get_verification_code.json",
			method: "GET",
			data: data,
			success: success,
			fail: fail,
			complete: complete
		})
	}
	static register({session, login, password, code, success, fail, complete}){
		let data = {login: login, password: password, code: code};
		session.request({
			url: api_base_url + "/accounts/register.json",
			method: "POST",
			data:data,
			success(res) {
				if("status" in res.data && res.data.status<0){
					fail(new Error(res.data.message));
					return;
				}
				success(res);
			},
			fail: fail,
			complete: complete
		})
	}
	static attendance({session, success, fail, complete}){
	    session.request({
            url: api_base_url + "/users/attendance.json",
            success(res) {
                if("status" in res.data && res.data.status<0){
                    fail(new Error(res.data.status));
                    return;
                }
                if(typeof success == "function"){
                    success(res);
                }
            },
            fail: fail,
            complete: complete
        })
    }
	static logout({session, success, fail, complete}){
		session.request({
			url: api_base_url + "/accounts/logout.json",
			method: "GET",
			success: success,
			fail: fail,
			complete: complete
		})
	}
	static get_user_courses({session,user,page=1, per_page=16, success, fail, complete}){
		let data = {page: page, per_page: per_page};
		return session.request({
			url: api_base_url + "/users/"+user +"/courses.json",
			method: "GET",
			data: data,
			success: success,
			fail: fail,
			complete: complete
		})
	}
}

export class Course{
	static create({session, data, success, fail, complete}){

	}
	static search({session, limit=20, page=1, order="all", search="", success, fail, complete}){
		let data = {limit: limit, page: page, order: order, search: search};
	    return session.request({
			url: api_base_url + "/courses.json",
			method: "GET",
            data: data,
			success: success,
			fail: fail,
			complete: complete
		})
	}
	static join({session, invite_code, professor=null,assistant_professor=null,student=null, success, fail, complete}){
		let data = {
			invite_code: invite_code,
			professor: professor,
			assistant_professor: assistant_professor,
			student: student
		};
		return session.request({
			url: api_base_url + "/courses/apply_to_join_course.json",
			method:"POST",
			data: data,
			success: res=>{
			    if("status" in res.data && res.data.status<0){
			        fail(new Error(res.data.message));
			        return;
                }
			    if(typeof success == "function"){
			        success(res);
                }
            },
			fail: fail,
			complete: complete
		})
	}
	static get_user_info({session, course_id, success, fail, complete}){
		let data = {course_id: course_id, school: 1}
		return session.request({
			url: api_base_url + "/users/get_user_info.json",
			method: "GET",
			data: data,
			success: success,
			fail: fail,
			complete: complete
		})
	}
	static get_files({session, course_id, page_size=15, page=1,search="",sort=0, sort_type="created_on", success, fail, complete}){
		let data = {course_id: course_id, page_size: page_size, page: page, search: search, sort: sort, sort_type: sort_type};
		return session.request({
			url: api_base_url + "/files.json",
			method: "GET",
			data: data,
			success: success,
			fail: fail,
			complete: complete
		})
	}
	static get_students({session, course_id, order=1,sort="asc",page=1, limit=20, course_group_id="", success, fail, complete}){
		let data = {
			order: order,
			sort: sort,
			page: page,
			limit: limit,
			course_group_id: course_group_id
		};
		return session.request({
			url: api_base_url + "/courses/" + course_id + "/students.json",
			method: "GET",
			data: data,
			success(res){
				if("status" in res.data && "message" in res.data){
					fail(new Error(res.data.message));
					return;
				}
				success(res);
			},
			fail: fail,
			complete: complete
		})
	}
	static get_course_info({session, course_id, success, fail, complete}){
		session.request({
			url: api_base_url + "/courses/"+course_id+"/top_banner.json",
			method : "GET",
			success: success,
			fail: fail,
			complete: complete
		})
	}
}

export class Exercise{
	static search({session,course_id, page=1, limit=15, success, fail, complete}){
		let data = {page:page, limit:limit};
        return session.request({
			url: api_base_url + "/courses/"+course_id+"/exercises.json",
			method: "GET",
			data: data,
          success(res) {
            if ("status" in res.data ) {
              if (res.data.status < 0){
              fail(new Error(res.data.message));
              return;
              }
              switch(res.data.status){
                case 409:
                  fail(new Error(res.data.message));
                  return;
              }
            }
            if (typeof success == "function") {
              success(res);
            }
          },
			fail:fail,
			complete: complete
		})
	}
	static start_answer({session, exercise_id, login, success, fail, complete}){
		let data = {login: login};
		return session.request({
			url: api_base_url + "/exercises/" + exercise_id + "/start_answer.json",
			method: "GET",
			data: data,
            success(res) {
                if ("status" in res.data ) {
                    if (res.data.status < 0){
                        fail(new Error(res.data.message));
                        return;
                    }
                    switch(res.data.status){
                        case 409:
                            fail(new Error(res.data.message));
                            return;
                    }
                }
                if (typeof success == "function") {
                    success(res);
                }
            },
			fail: fail,
			complete: complete
		})
	}
	static save({session, exercise_id, success, fail, complete}){
        return session.request({
            url: api_base_url + "/exercises/"+exercise_id+"/begin_commit.json",
            method: "GET",
            success: success,
            fail: fail,
            complete: complete
        })
    }
    static commit({session, exercise_id, commit_method=1, success, fail, complete}){
        let data = {commit_method: commit_method};
	    return session.request({
            url: api_base_url+ "/exercises/"+exercise_id+"/commit_exercise.json",
            method: "POST",
            data: data,
            success: success,
            fail: fail,
            complete: complete
        })
    }
}

export class ExerciseQuestion {
	static answer({session, question_id, exercise_choice_id, answer_text, success, fail, complete}){
		let data = {};
		if(exercise_choice_id){data["exercise_choice_id"] = exercise_choice_id;}
		if(answer_text){data["answer_text"] = answer_text}
		return session.request({
			url: api_base_url + "/exercise_questions/" + question_id +"/exercise_answers.json",
			method: "POST",
			data: data,
			success: res=>{
				if("status" in res.data){
					if(res.data.status<0){
						fail(new Error(res.data.message));
						return;
					}
					/*switch (res.data.status) {
						case -1:
							fail(new Error("???"));
							return;
					}*/
				}
				if(typeof success == "function") {
					success(res);
				}
			},
			fail: error=>{
				// console.error("wx.request error:");
				// console.log(error);
				// console.log(error.toString());
				// console.log(error.message);
				// console.log(error.errMsg);
				let e = error;
				if(!("message" in error)){
					if("errMsg" in error){
						e = new Error(error.errMsg);
					}
				}
				if(typeof fail == "function") {
					fail(e);
				}
			},
			complete: complete
		})
	}
}

export class Ui{


}