sprechstunden-go/controllers/addOfficeHourHandler.go

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package controllers
import (
"fmt"
"log"
"net/http"
"net/mail"
"officeHours/config"
"officeHours/models"
"officeHours/templating"
"strconv"
"strings"
)
type maskData struct {
Courses []models.Course
Rooms []models.Room
MinuteGranularity int
MaxDuration int
EarliestStartTime struct {
Hour int
Minute int
}
LatestStartTime struct {
Hour int
Minute int
}
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SelectedCourse int
SelectedRoom int
Date models.Date
Duration int
Roomname string
Name string
Email string
SubscribeToMailinglist bool
Info string
Errors []string
Config config.Config
}
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// Offer a form to add office hours and validate its input on receiving.
func (b *BaseHandler) AddOfficeHourHandler(w http.ResponseWriter, req *http.Request) {
SendSecurityHeaders(w, req)
var errors []string
courses, err := b.courseRepo.GetAll()
if err != nil {
errors = append(errors, err.Error())
}
rooms, err := b.roomRepo.GetAll()
if err != nil {
errors = append(errors, err.Error())
}
//Parse course
courseid, err := strconv.Atoi(req.FormValue("veranstaltung"))
if err != nil {
errors = append(errors, "Die Veranstaltung muss eine ganze Zahl sein.")
}
course, err := b.courseRepo.FindById(courseid)
if err != nil {
errors = append(errors, "Die Veranstaltung muss existieren.")
}
//Parse room
roomid, err := strconv.Atoi(req.FormValue("raum"))
if err != nil {
errors = append(errors, "Der Raum muss eine ganze Zahl sein.")
}
room, err := b.roomRepo.FindById(roomid)
if err != nil {
errors = append(errors, "Der Raum muss existieren.")
}
//Parse date
week, err := strconv.Atoi(req.FormValue("woche"))
if err != nil {
errors = append(errors, "Die Vorlesungswoche muss eine ganze Zahl sein.")
}
if !(week >= 0 && week <= 2) {
errors = append(errors, "Sprechstunden müssen jede, jede gerade oder jede ungerade Vorlesungswoche stattfinden.")
}
day, err := strconv.Atoi(req.FormValue("tag"))
if err != nil {
errors = append(errors, "Der Tag muss eine ganze Zahl sein.")
}
if !(day >= 0 && day <= 4) {
errors = append(errors, "Sprechstunden müssen von Montag bis Freitag stattfinden.")
}
time := strings.SplitN(req.FormValue("startzeit"), ":", 2)
var hour, minute int
if len(time) != 2 {
errors = append(errors, "Die Zeit muss im Format HH:MM sein.")
} else {
hour, err = strconv.Atoi(time[0])
if err != nil {
errors = append(errors, "Die Stunde muss eine ganze Zahl sein.")
}
if !(hour > b.config.Date.EarliestStartTime.Hour || (hour == b.config.Date.EarliestStartTime.Hour && minute >= b.config.Date.EarliestStartTime.Minute)) {
errors = append(errors, fmt.Sprintf("Sprechstunden müssen nach %02d:%02d Uhr starten.", b.config.Date.EarliestStartTime.Hour, b.config.Date.EarliestStartTime.Minute))
}
if !(hour < b.config.Date.LatestStartTime.Hour || (hour == b.config.Date.LatestStartTime.Hour && minute <= b.config.Date.LatestStartTime.Minute)) {
errors = append(errors, fmt.Sprintf("Sprechstunden müssen vor %02d:%02d Uhr starten.", b.config.Date.LatestStartTime.Hour, b.config.Date.LatestStartTime.Minute))
}
minute, err = strconv.Atoi(time[1])
if err != nil {
errors = append(errors, "Die Minute muss eine ganze Zahl sein.")
}
if !(minute >= 0 && minute <= 60-b.config.Date.MinuteGranularity && minute%b.config.Date.MinuteGranularity == 0) {
errors = append(errors, fmt.Sprintf("Sprechstunden dürfen nur alle %d Minuten starten.", b.config.Date.MinuteGranularity))
}
}
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date := models.Date{Week: week, Day: day, Hour: hour, Minute: minute}
duration, err := strconv.Atoi(req.FormValue("dauer"))
if err != nil {
errors = append(errors, "Die Dauer muss eine ganze Zahl sein.")
}
if !(duration >= b.config.Date.MinuteGranularity && duration <= b.config.Date.MaxDuration && duration%b.config.Date.MinuteGranularity == 0) {
errors = append(errors, fmt.Sprintf("Sprechstunden müssen zwischen %d und %d Minuten lang sein.", b.config.Date.MinuteGranularity, b.config.Date.MaxDuration))
}
roomname := req.FormValue("raumname")
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if roomname != "" && room.Name != "Sonstige" {
errors = append(errors, "Sonderraumnamen können nur für den Raum \"Sonstige\" angegeben werden.")
}
name := req.FormValue("name")
if name == "" {
errors = append(errors, "Der Name darf nicht leer sein.")
}
email, err := mail.ParseAddress(req.FormValue("email"))
if err != nil {
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email = &mail.Address{Name: "", Address: req.FormValue("email")}
errors = append(errors, "Mailaddresse konnte nicht geparst werden.")
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} else if !(b.config.Tutor.MailSuffix == "" || strings.HasSuffix(email.Address, "@"+b.config.Tutor.MailSuffix) || strings.HasSuffix(email.Address, "."+b.config.Tutor.MailSuffix)) {
errors = append(errors, fmt.Sprintf("Mailaddresse muss auf „%s“ enden.", b.config.Tutor.MailSuffix))
}
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subscribeToMailinglist := req.FormValue("subscribeToMailinglist") == "subscribe"
info := req.FormValue("info")
allowed, err := b.officeHourRepo.AllowedAt(date, duration, room, true)
if err != nil {
errors = append(errors, fmt.Sprintf("Fehler beim Abfragen der Raumkapazität: %s", err.Error()))
} else if !allowed {
errors = append(errors, "In dem Raum muss noch Platz für weitere Sprechstunden sein.")
}
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// If there were errors in the data for the new office hour,
// answer with the form prefilled with the sent data.
if len(errors) != 0 {
var data maskData = maskData{
courses,
rooms,
b.config.Date.MinuteGranularity,
b.config.Date.MaxDuration,
b.config.Date.EarliestStartTime,
b.config.Date.LatestStartTime,
courseid,
roomid,
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date,
duration,
roomname,
name,
email.Address,
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subscribeToMailinglist,
info,
errors,
b.config,
}
b.writeAddOfficeHourMask(w, req, data)
} else {
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// if the data for a new office hour was sent correctly, save it.
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officeHour := models.OfficeHour{Id: 0,
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Tutor: models.Tutor{Id: 0, Name: name, Email: email.Address, SubscribeToMailinglist: subscribeToMailinglist},
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Date: date,
Room: room,
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RoomName: roomname,
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Course: course,
Info: info,
Active: false,
Duration: duration,
}
id, err := b.officeHourRepo.Add(officeHour)
if err != nil {
w.WriteHeader(http.StatusInternalServerError)
templating.ServeTemplate(w, "addFailure", err)
return
}
officeHour, err = b.officeHourRepo.FindById(id)
if err != nil {
log.Printf("Error finding new office hour by id %d: %s", id, err.Error())
}
_, err = b.requestRepo.Add(officeHour, models.RequestActivate)
if err != nil {
log.Printf("Error adding request: %s", err.Error())
}
templating.ServeTemplate(w, "addSuccess", nil)
}
}
func (b *BaseHandler) writeAddOfficeHourMask(w http.ResponseWriter, req *http.Request, data maskData) {
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if req.Method == http.MethodGet { // if the current request is GET, we assume no office hour addition was tried so far and reset the errors.
data.Errors = []string{}
}
if len(data.Errors) != 0 {
w.WriteHeader(http.StatusBadRequest)
}
templating.ServeTemplate(w, "addMask", data)
}