138 lines
3.4 KiB
Go
138 lines
3.4 KiB
Go
package main
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import (
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"errors"
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"net/http"
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"github.com/julienschmidt/httprouter"
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)
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func init() {
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router.GET("/api/users/:uid/surveys/:sid/grades", apiAuthHandler(func(uauth *User, ps httprouter.Params, body []byte) HTTPResponse {
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return surveyAuthHandler(func(s Survey, uauth *User, _ []byte) HTTPResponse {
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return userHandler(func(u User, _ []byte) HTTPResponse {
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if uauth != nil && ((s.Shown && u.Id == uauth.Id) || uauth.IsAdmin) {
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if score, err := s.GetUserGrades(&u); err != nil {
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return APIErrorResponse{err: err}
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} else if score == nil {
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return APIResponse{"N/A"}
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} else {
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return APIResponse{score}
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}
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} else {
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return APIErrorResponse{
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status: http.StatusForbidden,
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err: errors.New("Not accessible"),
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}
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}
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})(ps, body)
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})(uauth, ps, body)
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}, loggedUser))
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router.GET("/api/surveys/:sid/grades", apiAuthHandler(surveyAuthHandler(func(s Survey, uauth *User, _ []byte) HTTPResponse {
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if scores, err := s.GetGrades(); err != nil {
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return APIErrorResponse{err: err}
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} else if scores == nil {
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return APIResponse{"N/A"}
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} else {
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return APIResponse{scores}
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}
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}), adminRestricted))
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router.GET("/api/grades", apiAuthHandler(func(uauth *User, ps httprouter.Params, body []byte) HTTPResponse {
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if uauth != nil && uauth.IsAdmin {
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if score, err := GetAllGrades(); err != nil {
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return APIErrorResponse{err: err}
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} else if score == nil {
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return APIResponse{"N/A"}
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} else {
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return APIResponse{score}
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}
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} else {
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return APIErrorResponse{
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status: http.StatusForbidden,
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err: errors.New("Not accessible"),
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}
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}
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}, adminRestricted))
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}
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func GetAllGrades() (scores map[int64]map[int64]*float64, err error) {
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if rows, errr := DBQuery("SELECT id_user, id_survey, SUM(score)/COUNT(*) FROM student_scores GROUP BY id_user, id_survey"); err != nil {
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return nil, errr
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} else {
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defer rows.Close()
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scores = map[int64]map[int64]*float64{}
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for rows.Next() {
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var id_user int64
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var id_survey int64
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var score *float64
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if err = rows.Scan(&id_user, &id_survey, &score); err != nil {
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return
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}
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if scores[id_user] == nil {
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scores[id_user] = map[int64]*float64{}
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}
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scores[id_user][id_survey] = score
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}
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if err = rows.Err(); err != nil {
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return
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}
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}
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return
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}
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func (s Survey) GetGrades() (scores map[int64]*float64, err error) {
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if rows, errr := DBQuery("SELECT id_question, SUM(score)/COUNT(*) FROM student_scores WHERE id_survey=? GROUP BY id_question", s.Id); err != nil {
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return nil, errr
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} else {
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defer rows.Close()
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scores = map[int64]*float64{}
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for rows.Next() {
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var id_question int64
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var score *float64
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if err = rows.Scan(&id_question, &score); err != nil {
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return
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}
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scores[id_question] = score
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}
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if err = rows.Err(); err != nil {
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return
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}
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}
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return
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}
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func (s Survey) GetUserGrades(u *User) (scores map[int64]*float64, err error) {
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if rows, errr := DBQuery("SELECT id_question, MAX(score) FROM student_scores WHERE id_survey=? AND id_user = ? GROUP BY id_question", s.Id, u.Id); err != nil {
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return nil, errr
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} else {
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defer rows.Close()
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scores = map[int64]*float64{}
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for rows.Next() {
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var id_question int64
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var score *float64
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if err = rows.Scan(&id_question, &score); err != nil {
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return
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}
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scores[id_question] = score
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}
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if err = rows.Err(); err != nil {
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return
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}
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}
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return
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}
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