232 lines
7.4 KiB
Go
232 lines
7.4 KiB
Go
package main
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import (
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"encoding/json"
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"errors"
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"fmt"
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"net/http"
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"strconv"
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"time"
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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/surveys", apiAuthHandler(
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func(u *User, _ httprouter.Params, _ []byte) HTTPResponse {
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if u == nil {
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return formatApiResponse(getSurveys(fmt.Sprintf("WHERE shown = TRUE AND NOW() > start_availability AND promo = %d ORDER BY start_availability ASC", currentPromo)))
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} else if u.IsAdmin {
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return formatApiResponse(getSurveys("ORDER BY promo DESC, start_availability ASC"))
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} else {
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return formatApiResponse(getSurveys(fmt.Sprintf("WHERE shown = TRUE AND promo = %d ORDER BY start_availability ASC", u.Promo)))
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}
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}))
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router.POST("/api/surveys", apiHandler(func(_ httprouter.Params, body []byte) HTTPResponse {
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var new Survey
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if err := json.Unmarshal(body, &new); err != nil {
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return APIErrorResponse{err: err}
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}
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if new.Promo == 0 {
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new.Promo = currentPromo
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}
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return formatApiResponse(NewSurvey(new.Title, new.Promo, new.Shown, new.StartAvailability, new.EndAvailability))
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}, adminRestricted))
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router.GET("/api/surveys/:sid", apiAuthHandler(surveyAuthHandler(
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func(s Survey, u *User, _ []byte) HTTPResponse {
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if (s.Promo == u.Promo && s.Shown) || (u != nil && u.IsAdmin) {
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return APIResponse{s}
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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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})))
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router.PUT("/api/surveys/:sid", apiHandler(surveyHandler(func(current Survey, body []byte) HTTPResponse {
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var new Survey
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if err := json.Unmarshal(body, &new); err != nil {
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return APIErrorResponse{err: err}
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}
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new.Id = current.Id
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return formatApiResponse(new.Update())
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}), adminRestricted))
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router.DELETE("/api/surveys/:sid", apiHandler(surveyHandler(
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func(s Survey, _ []byte) HTTPResponse {
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return formatApiResponse(s.Delete())
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}), adminRestricted))
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router.GET("/api/surveys/:sid/score", apiAuthHandler(surveyAuthHandler(
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func(s Survey, u *User, _ []byte) HTTPResponse {
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if (s.Promo == u.Promo && s.Shown) || (u != nil && u.IsAdmin) {
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if score, err := s.GetScore(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{map[string]string{"score": "N/A"}}
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} else {
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return APIResponse{map[string]float64{"score": *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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}), loggedUser))
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router.GET("/api/users/:uid/surveys/:sid/score", 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.Promo == u.Promo && s.Shown && u.Id == uauth.Id) || uauth.IsAdmin) {
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if score, err := s.GetScore(&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{map[string]string{"score": "N/A"}}
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} else {
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return APIResponse{map[string]float64{"score": *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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}
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func surveyHandler(f func(Survey, []byte) HTTPResponse) func(httprouter.Params, []byte) HTTPResponse {
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return func(ps httprouter.Params, body []byte) HTTPResponse {
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if sid, err := strconv.Atoi(string(ps.ByName("sid"))); err != nil {
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return APIErrorResponse{err: err}
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} else if survey, err := getSurvey(sid); err != nil {
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return APIErrorResponse{err: err}
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} else {
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return f(survey, body)
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}
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}
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}
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func surveyAuthHandler(f func(Survey, *User, []byte) HTTPResponse) func(*User, httprouter.Params, []byte) HTTPResponse {
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return func(u *User, ps httprouter.Params, body []byte) HTTPResponse {
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if sid, err := strconv.Atoi(string(ps.ByName("sid"))); err != nil {
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return APIErrorResponse{err: err}
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} else if survey, err := getSurvey(sid); err != nil {
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return APIErrorResponse{err: err}
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} else {
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return f(survey, u, body)
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}
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}
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}
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type Survey struct {
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Id int64 `json:"id"`
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Title string `json:"title"`
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Promo uint `json:"promo"`
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Shown bool `json:"shown"`
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Corrected bool `json:"corrected"`
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StartAvailability time.Time `json:"start_availability"`
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EndAvailability time.Time `json:"end_availability"`
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}
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func getSurveys(cnd string, param ...interface{}) (surveys []Survey, err error) {
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if rows, errr := DBQuery("SELECT id_survey, title, promo, shown, corrected, start_availability, end_availability FROM surveys "+cnd, param...); errr != nil {
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return nil, errr
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} else {
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defer rows.Close()
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for rows.Next() {
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var s Survey
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if err = rows.Scan(&s.Id, &s.Title, &s.Promo, &s.Shown, &s.Corrected, &s.StartAvailability, &s.EndAvailability); err != nil {
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return
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}
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surveys = append(surveys, s)
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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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return
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}
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}
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func getSurvey(id int) (s Survey, err error) {
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err = DBQueryRow("SELECT id_survey, title, promo, shown, corrected, start_availability, end_availability FROM surveys WHERE id_survey=?", id).Scan(&s.Id, &s.Title, &s.Promo, &s.Shown, &s.Corrected, &s.StartAvailability, &s.EndAvailability)
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return
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}
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func NewSurvey(title string, promo uint, shown bool, startAvailability time.Time, endAvailability time.Time) (Survey, error) {
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if res, err := DBExec("INSERT INTO surveys (title, promo, shown, start_availability, end_availability) VALUES (?, ?, ?, ?, ?)", title, promo, shown, startAvailability, endAvailability); err != nil {
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return Survey{}, err
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} else if sid, err := res.LastInsertId(); err != nil {
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return Survey{}, err
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} else {
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return Survey{sid, title, promo, shown, false, startAvailability, endAvailability}, nil
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}
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}
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func (s Survey) GetScore(u *User) (score *float64, err error) {
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err = DBQueryRow("SELECT SUM(score)/COUNT(*) FROM student_scores WHERE id_survey=? AND id_user=?", s.Id, u.Id).Scan(&score)
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if score != nil {
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*score = *score / 5.0
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}
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return
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}
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func (s Survey) GetScores() (scores map[int64]*float64, err error) {
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if rows, errr := DBQuery("SELECT id_user, SUM(score)/COUNT(*) FROM student_scores WHERE id_survey=? GROUP BY id_user", 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_user int64
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var score *float64
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if err = rows.Scan(&id_user, &score); err != nil {
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return
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}
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scores[id_user] = 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) Update() (int64, error) {
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if res, err := DBExec("UPDATE surveys SET title = ?, promo = ?, shown = ?, corrected = ?, start_availability = ?, end_availability = ? WHERE id_survey = ?", s.Title, s.Promo, s.Shown, s.Corrected, s.StartAvailability, s.EndAvailability, s.Id); err != nil {
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return 0, err
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} else if nb, err := res.RowsAffected(); err != nil {
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return 0, err
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} else {
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return nb, err
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}
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}
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func (s Survey) Delete() (int64, error) {
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if res, err := DBExec("DELETE FROM surveys WHERE id_survey = ?", s.Id); err != nil {
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return 0, err
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} else if nb, err := res.RowsAffected(); err != nil {
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return 0, err
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} else {
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return nb, err
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}
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}
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func ClearSurveys() (int64, error) {
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if res, err := DBExec("DELETE FROM surveys"); err != nil {
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return 0, err
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} else if nb, err := res.RowsAffected(); err != nil {
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return 0, err
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} else {
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return nb, err
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}
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}
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