Datenbanken, erster Versuch

.gitignore

@@ -6,6 +6,9 @@
 *.dylib
 sprechstundentool
 
+#Databases
+*.db
+
 # Test binary, built with `go test -c`
 *.test
 
@@ -17,3 +20,5 @@ vendor/
 
 # Go workspace file
 go.work
+go.mod
+go.sum

controllers/handlers.go

@@ -0,0 +1,77 @@
+package controllers
+
+import (
+	"fmt"
+	"html/template"
+	"net/http"
+	"sprechstundentool/models"
+	"strconv"
+)
+
+// BaseHandler will hold everything that controller needs
+type BaseHandler struct {
+	roomRepo       models.RoomRepository
+	officeHourRepo models.OfficeHourRepository
+	courseRepo     models.CourseRepository
+	tutorRepo      models.TutorRepository
+}
+
+// NewBaseHandler returns a new BaseHandler
+func NewBaseHandler(roomRepo models.RoomRepository, officeHourRepo models.OfficeHourRepository, courseRepo models.CourseRepository, tutorRepo models.TutorRepository) *BaseHandler {
+	return &BaseHandler{roomRepo, officeHourRepo, courseRepo, tutorRepo}
+}
+
+func (b *BaseHandler) RootHandler(w http.ResponseWriter, req *http.Request) {
+	b.writeTimetablePage(w, req, template.HTML(""))
+}
+
+func (b *BaseHandler) GetByRoomHandler(w http.ResponseWriter, req *http.Request) {
+	roomId, _ := strconv.Atoi(req.FormValue("raum"))
+	room, err := b.roomRepo.FindById(roomId)
+	if err != nil {
+		fmt.Println(err)
+		b.RootHandler(w, req)
+		return
+	}
+	officeHours, _ := b.officeHourRepo.FindByRoom(room)
+	b.writeTimetablePage(w, req, printTimetable(GetTimetable(officeHours)))
+}
+
+func (b *BaseHandler) GetByCourseHandler(w http.ResponseWriter, req *http.Request) {
+	courseid, err := strconv.Atoi(req.FormValue("veranstaltung"))
+	if err != nil {
+		b.RootHandler(w, req)
+	}
+	course, err := b.courseRepo.FindById(courseid)
+	if err != nil {
+		b.RootHandler(w, req)
+		return
+	}
+	officeHours, _ := b.officeHourRepo.FindByCourse(course)
+	b.writeTimetablePage(w, req, printTimetable(GetTimetable(officeHours)))
+}
+
+func (b *BaseHandler) writeTimetablePage(w http.ResponseWriter, req *http.Request, timetable template.HTML) {
+	courses, _ := b.courseRepo.GetAll()
+	rooms, _ := b.roomRepo.GetAll()
+	selectedRoom, _ := strconv.Atoi(req.FormValue("raum"))
+	selectedCourse, _ := strconv.Atoi(req.FormValue("veranstaltung"))
+	data := struct {
+		Courses        []models.Course
+		Rooms          []models.Room
+		Timetable      template.HTML
+		SelectedRoom   int
+		SelectedCourse int
+	}{courses, rooms, timetable, selectedRoom, selectedCourse}
+	tmpl, err := template.ParseFiles("templates/index.html")
+	if err != nil {
+		w.WriteHeader(http.StatusInternalServerError)
+		w.Write([]byte(fmt.Sprintf("Template konnte nicht geparst werden : %s", string(err.Error()))))
+		return
+	}
+	err = tmpl.Execute(w, data)
+	if err != nil {
+		w.Write([]byte(fmt.Sprintf("Template konnte nicht geparst werden : %s", string(err.Error()))))
+		return
+	}
+}

controllers/timetable.go

@@ -0,0 +1,137 @@
+// timetable.go
+package controllers
+
+import (
+	"bytes"
+	"fmt"
+	"html/template"
+	"sprechstundentool/models"
+)
+
+func GetTimetable(officeHours []models.OfficeHour) (timetable map[models.Date]map[int]models.OfficeHour, slots []int) {
+	var fullTimetable = make(map[models.Date]map[int]models.OfficeHour)
+	for _, officeHour := range officeHours {
+		var slot int = 0
+		for minute := 0; minute < officeHour.Duration; minute += models.MinuteGranularity { // find slot id
+			_, exists := fullTimetable[models.Date{officeHour.Day, officeHour.Hour + (officeHour.Minute+minute)/60, (officeHour.Minute + minute) % 60}]
+			if exists {
+				_, exists := fullTimetable[models.Date{officeHour.Day, officeHour.Hour + (officeHour.Minute+minute)/60, (officeHour.Minute + minute) % 60}][slot]
+				if exists {
+					slot += 1
+					minute = 0
+					continue
+				}
+			} else {
+				fullTimetable[models.Date{officeHour.Day, officeHour.Hour + (officeHour.Minute+minute)/60, (officeHour.Minute + minute) % 60}] = make(map[int]models.OfficeHour)
+			}
+		}
+		for minute := 0; minute < officeHour.Duration; minute += models.MinuteGranularity { // write officeHour id to timetable
+			fullTimetable[models.Date{officeHour.Day, officeHour.Hour + (officeHour.Minute+minute)/60, (officeHour.Minute + minute) % 60}][slot] = officeHour
+		}
+	}
+	slots = []int{1, 1, 1, 1, 1}
+	for date, _ := range fullTimetable {
+		if slots[date.Day] < len(fullTimetable[date]) {
+			slots[date.Day] = len(fullTimetable[date])
+		}
+	}
+	timetable = make(map[models.Date]map[int]models.OfficeHour)
+	for _, officeHour := range officeHours {
+		for slot := 0; slot < slots[officeHour.Date.Day]; slot += 1 {
+			if fullTimetable[officeHour.Date][slot] == officeHour {
+				timetable[officeHour.Date] = make(map[int]models.OfficeHour)
+				timetable[officeHour.Date][slot] = officeHour
+			}
+		}
+	}
+	return fullTimetable, slots
+}
+
+func printTimetable(timetable map[models.Date]map[int]models.OfficeHour, slots []int) template.HTML {
+	var tableBody string
+
+	tableCell, _ := template.ParseFiles("templates/td.html")
+	for hour := 8; hour < 19; hour += 1 {
+		for minute := 0; minute < 60; minute += models.MinuteGranularity {
+			tableBody += "<tr>"
+			if minute == 0 {
+				tableBody += fmt.Sprintf("<td>%d Uhr</td>\n", hour)
+			} else {
+				tableBody += "<td></td>\n"
+			}
+			for day := 0; day < 5; day += 1 {
+				for slot := 0; slot < slots[day]; slot += 1 {
+					current, currentExists := timetable[models.Date{day, hour, minute}][slot]
+
+					if currentExists { // This slot is taken by some office hour
+						var continued bool = false // is this slot occupied by the same office hour the previous minute?
+						var predecessorExists bool
+						var predecessor models.OfficeHour
+						if hour > 0 && minute < models.MinuteGranularity {
+							predecessor, predecessorExists = timetable[models.Date{day, hour - 1, 60 - models.MinuteGranularity}][slot]
+						} else {
+							predecessor, predecessorExists = timetable[models.Date{day, hour, minute - models.MinuteGranularity}][slot]
+						}
+						if predecessorExists {
+							continued = (predecessor == current)
+						} else {
+							continued = false
+						}
+						if continued {
+							continue
+						} else {
+							var celldata bytes.Buffer
+							data := struct {
+								Rowspan     int
+								StartHour   int
+								StartMinute int
+								EndHour     int
+								EndMinute   int
+								CourseName  string
+								TutorName   string
+								RoomName    string
+							}{current.Duration / models.MinuteGranularity,
+								current.Hour,
+								current.Minute,
+								current.Hour + ((current.Minute + current.Duration) / 60),
+								(current.Minute + current.Duration) % 60,
+								template.HTMLEscapeString(current.Course.Name),
+								current.Tutor.Name,
+								current.Room.Name,
+							}
+							tableCell.Execute(&celldata, data)
+							tableBody += celldata.String()
+						}
+					} else {
+						if slot+1 == slots[day] {
+							tableBody += "<td style=\"border-right: 1px dotted\"></td>\n"
+						} else {
+							tableBody += "<td></td>\n"
+						}
+					}
+				}
+			}
+			tableBody += "</tr>\n"
+		}
+	}
+	var table bytes.Buffer
+	tableTemplate, _ := template.ParseFiles("templates/officeHourTable.html")
+
+	tableData := struct {
+		ColspanMon int
+		ColspanTue int
+		ColspanWed int
+		ColspanThu int
+		ColspanFri int
+		TableBody  template.HTML
+	}{
+		slots[0],
+		slots[1],
+		slots[2],
+		slots[3],
+		slots[4],
+		template.HTML(tableBody),
+	}
+	tableTemplate.Execute(&table, tableData)
+	return template.HTML(table.String())
+}

course.go

@@ -1,15 +0,0 @@
-// course
-package main
-
-type Course struct {
-	Id     int
-	Name   string
-	Active bool
-}
-
-func getCourses() []Course {
-	return []Course{
-		Course{1, "Dummyveranstaltung", true},
-		Course{2, "Dummyveranstaltung 2", true},
-	}
-}

dummydatasqlite.sql

@@ -0,0 +1,4 @@
+INSERT INTO `room` (name, max_occupy) VALUES ('S2 15 345',2),('S2 15 415',1),('S2 15 336',2),('S2 15 444',1),('S2 15 333',1),('S2 14 420',1),('Sonstige',1024);
+INSERT INTO `officeHour` VALUES (0,1,1,12,0,1,1,0,'',true,60),(1,1,1,12,15,2,1,0,'',true,60),(2,1,1,12,30,1,2,0,'',true,60);
+INSERT INTO `tutor` (name, email) VALUES ('Dummyname','dummy@example.com');
+INSERT INTO `course` (name) VALUES ('Integrationstheorie'),('Analysis II (engl.)'),('Analysis II'),('Mathe II für Informatik'),('Mathe II für Bauwesen'),('Diskrete Optimierung'),('Lineare Algebra II'),('Einführung in die Algebra'),('FGdI I&II'),('Algorithmic Discrete Mathematics'),('Einführung in die Stochastik'),('Mathe II für ET'),('Mathe II für Maschinenbau'),('Mathe IV für Maschinenbau'),('Num Mathe für MB (IV)'),('Höhere Mathematik II'),('Elementare PDE'),('LA für Physik und Lehramt'),('Analysis I'),('Mathe III ET'),('Mathe I für Informatik'),('Complex Analysis'),('Mathe & Statistik für Biologen'),('Mathe I für Maschinenbau'),('Mathe I für Bau'),('Nichtlineare Optimierung'),('Einführung in die Numerische Mathematik'),('Differentialgeometrie'),('Mathe I für ET'),('Mathe III (Bau)'),('W. Theorie'),('Gewöhnliche Differentialgleichungen'),('Geometrie für Lehramt'),('Mathe III MB'),('Statistik I für Humanwissenschaftler'),('Einführung in die Optimierung'),('Algebra'),('Lineare Algebra I'),('Höhere Mathematik 1'),('Darstellende Geometrie'),('Statistik 1 für WI'),('Diskrete Mathematik'),('Linear Algebra I (engl.)'),('Introduction to mathematical logic'),('Statistik I für WI'),('Weihnachtsknobelstraße'),('Numerische Lineare Algebra'),('Mathe IV (ET) / Mathe III (Inf) / Praktische Mathe (MEd)'),('Topologie'),('Linear Algebra II (engl.)'),('Einführung in die Finanzmathematik'),('Einführung in die mathematische Software'),('Mathematische Statistik'),('Algebraische Kurven'),('Analysis I (engl.)'),('Funktionalanalysis'),('Lebensversicherungsmathematik'),('Automaten, Formale Sprachen und Entscheidbarkeit (FGdI)'),('Mathematik für Chemiker'),('Numerik gewöhnlicher Differentialgleichungen'),('Darstellungstheorie'),('Aussagen- und Prädikatenlogik'),('Riemannsche Flächen'),('Mathematische Grundlagen der Quantenmechanik'),('Elementare Zahlentheorie'),('Einführung in die mathematische Modellierung'),('Stochastische Prozesse I'),('Mathematik im Kontext'),('Funktionalanalysis II'),('Mathematik IV (für ET) /Mathematik III (für Inf) /PraktischeMathematik (für M.Ed.Math)'),('Differentialgeometrie fuer VI'),('Probability Theory'),('Mathe für MINT'),('Mathematik als gemeinsame Sprache der Naturwissenschaften'),('Lineare Algebra I für Physiker'),('Manifolds'),('Kurvenschätzung'),('Spieltheorie'),('Einführung in die Programmierung'),('Algebraische Topologie'),('Schadenversicherungsmathematik'),('Partial Differential Equations I');

main.go

@@ -1,68 +1,27 @@
 package main
 
 import (
-	"fmt"
-	"html/template"
 	"net/http"
-	"strconv"
+	"sprechstundentool/controllers"
+	"sprechstundentool/repositories"
+	"sprechstundentool/sqldb"
 )
 
-func root(w http.ResponseWriter, req *http.Request) {
-	writeTimetablePage(w, req, template.HTML(""))
-}
-
-func getByRoom(w http.ResponseWriter, req *http.Request) {
-	room, err := strconv.Atoi(req.FormValue("raum"))
-	if err != nil || room == 0 {
-		root(w, req)
-		return
-	}
-	writeTimetablePage(w, req, printTimetable(getTimetable(getOfficeHoursByRoom(room))))
-}
-
-func getByCourse(w http.ResponseWriter, req *http.Request) {
-	course, err := strconv.Atoi(req.FormValue("veranstaltung"))
-	if err != nil || course == 0 {
-		root(w, req)
-		return
-	}
-	writeTimetablePage(w, req, printTimetable(getTimetable(getOfficeHoursByCourse(course))))
-}
-
-func writeTimetablePage(w http.ResponseWriter, req *http.Request, timetable template.HTML) {
-	room, err := strconv.Atoi(req.FormValue("raum"))
-	if err != nil {
-		room = 0
-	}
-	course, err := strconv.Atoi(req.FormValue("veranstaltung"))
-	if err != nil {
-		course = 0
-	}
-	data := struct {
-		Courses        []Course
-		Rooms          []Room
-		Timetable      template.HTML
-		SelectedRoom   int
-		SelectedCourse int
-	}{getCourses(), getRooms(), timetable, room, course}
-	tmpl, err := template.ParseFiles("templates/index.html")
-	if err != nil {
-		w.WriteHeader(http.StatusInternalServerError)
-		w.Write([]byte(fmt.Sprintf("Template konnte nicht geparst werden : %s", string(err.Error()))))
-		return
-	}
-	err = tmpl.Execute(w, data)
-	if err != nil {
-		w.Write([]byte(fmt.Sprintf("Template konnte nicht geparst werden : %s", string(err.Error()))))
-		return
-	}
-}
-
 func main() {
-	http.HandleFunc("/getByRoom", getByRoom)
-	http.HandleFunc("/getByCourse", getByCourse)
+	db := sqldb.ConnectDB()
 
-	http.HandleFunc("/", root)
+	// Create repos
+	roomRepo := repositories.NewRoomRepo(db)
+	courseRepo := repositories.NewCourseRepo(db)
+	tutorRepo := repositories.NewTutorRepo(db)
+	officeHourRepo := repositories.NewOfficeHourRepo(db, roomRepo, tutorRepo, courseRepo)
+
+	h := controllers.NewBaseHandler(roomRepo, officeHourRepo, courseRepo, tutorRepo)
+
+	http.HandleFunc("/getByRoom", h.GetByRoomHandler)
+	http.HandleFunc("/getByCourse", h.GetByCourseHandler)
+
+	http.HandleFunc("/", h.RootHandler)
 
 	http.ListenAndServe(":8080", nil)
 }

models/course.go

@@ -0,0 +1,14 @@
+// course
+package models
+
+type Course struct {
+	Id   int
+	Name string
+}
+
+type CourseRepository interface {
+	FindByName(name string) (Course, error)
+	GetAll() ([]Course, error)
+	FindById(id int) (Course, error)
+	GetActive() ([]Course, error)
+}

models/date.go

@@ -1,8 +1,10 @@
 // date
-package main
+package models
 
 type Date struct {
 	Day    int
 	Hour   int
 	Minute int
 }
+
+const MinuteGranularity int = 5

models/officeHour.go

@@ -0,0 +1,23 @@
+// officeHour
+package models
+
+type OfficeHour struct {
+	Id    int
+	Tutor Tutor
+	Week  int
+	Date
+	Room     Room
+	Course   Course
+	Info     string
+	Active   bool
+	Duration int
+}
+
+type OfficeHourRepository interface {
+	FindById(id int) (OfficeHour, error)
+	FindByCourse(course Course) ([]OfficeHour, error)
+	FindByRoom(room Room) ([]OfficeHour, error)
+	GetAll() ([]OfficeHour, error)
+	Delete(officeHour OfficeHour) error
+	Add(officeHour OfficeHour) error
+}

models/room.go

@@ -0,0 +1,14 @@
+// raum
+package models
+
+type Room struct {
+	Id        int
+	Name      string
+	MaxOccupy int
+}
+
+type RoomRepository interface {
+	FindByName(name string) (Room, error)
+	GetAll() ([]Room, error)
+	FindById(id int) (Room, error)
+}

models/tutor.go

@@ -0,0 +1,15 @@
+// tutor
+package models
+
+type Tutor struct {
+	Id    int
+	Name  string
+	Email string
+}
+
+type TutorRepository interface {
+	FindByEmail(Email string) ([]Tutor, error)
+	FindById(Id int) (Tutor, error)
+	GetAll() ([]Tutor, error)
+	Add(tutor Tutor) error
+}

officeHour.go

@@ -1,217 +0,0 @@
-// officeHour
-package main
-
-import (
-	"bytes"
-	"fmt"
-	"html/template"
-)
-
-const minuteGranularity int = 5
-
-type OfficeHour struct {
-	Id    int
-	Tutor Tutor
-	Week  int
-	Date
-	Room     Room
-	Course   Course
-	Info     string
-	Active   bool
-	Duration int
-}
-
-func getOfficeHours() []OfficeHour {
-	return []OfficeHour{
-		OfficeHour{
-			Id:    1,
-			Tutor: Tutor{1, "Dummy", "dummy@mathebau.de"},
-			Week:  0,
-			Date: Date{
-				Day:    0,
-				Hour:   12,
-				Minute: 0},
-			Room:     getRooms()[0],
-			Course:   getCourses()[0],
-			Info:     "",
-			Active:   true,
-			Duration: 60},
-		OfficeHour{
-			Id:    2,
-			Tutor: Tutor{1, "Dummy", "dummy@mathebau.de"},
-			Week:  0,
-			Date: Date{
-				Day:    0,
-				Hour:   13,
-				Minute: 30},
-			Room:     getRooms()[0],
-			Course:   getCourses()[1],
-			Info:     "",
-			Active:   true,
-			Duration: 90},
-		OfficeHour{
-			Id:    3,
-			Tutor: Tutor{1, "Dummy", "dummy@mathebau.de"},
-			Week:  0,
-			Date: Date{Day: 0,
-				Hour:   12,
-				Minute: 45},
-			Room:     getRooms()[1],
-			Course:   getCourses()[1],
-			Info:     "",
-			Active:   true,
-			Duration: 60}}
-
-}
-
-func getOfficeHoursByCourse(courseId int) []OfficeHour {
-	var result []OfficeHour
-	for _, option := range getOfficeHours() {
-		if option.Course.Id == courseId {
-			result = append(result, option)
-		}
-	}
-	return result
-}
-
-func getOfficeHoursByRoom(roomId int) []OfficeHour {
-	var result []OfficeHour
-	for _, option := range getOfficeHours() {
-		if option.Room.Id == roomId {
-			result = append(result, option)
-		}
-	}
-	return result
-}
-
-func getOfficeHourById(id int) OfficeHour {
-	return OfficeHour{}
-}
-
-func getTimetable(officeHours []OfficeHour) (timetable map[Date]map[int]OfficeHour, slots []int) {
-	var fullTimetable = make(map[Date]map[int]OfficeHour)
-	for _, officeHour := range officeHours {
-		var slot int = 0
-		for minute := 0; minute < officeHour.Duration; minute += minuteGranularity { // find slot id
-			_, exists := fullTimetable[Date{officeHour.Day, officeHour.Hour + (officeHour.Minute+minute)/60, (officeHour.Minute + minute) % 60}]
-			if exists {
-				_, exists := fullTimetable[Date{officeHour.Day, officeHour.Hour + (officeHour.Minute+minute)/60, (officeHour.Minute + minute) % 60}][slot]
-				if exists {
-					slot += 1
-					minute = 0
-					continue
-				}
-			} else {
-				fullTimetable[Date{officeHour.Day, officeHour.Hour + (officeHour.Minute+minute)/60, (officeHour.Minute + minute) % 60}] = make(map[int]OfficeHour)
-			}
-		}
-		for minute := 0; minute < officeHour.Duration; minute += minuteGranularity { // write officeHour id to timetable
-			fullTimetable[Date{officeHour.Day, officeHour.Hour + (officeHour.Minute+minute)/60, (officeHour.Minute + minute) % 60}][slot] = officeHour
-		}
-	}
-	slots = []int{1, 1, 1, 1, 1}
-	for date, _ := range fullTimetable {
-		if slots[date.Day] < len(fullTimetable[date]) {
-			slots[date.Day] = len(fullTimetable[date])
-		}
-	}
-	timetable = make(map[Date]map[int]OfficeHour)
-	for _, officeHour := range officeHours {
-		for slot := 0; slot < slots[officeHour.Date.Day]; slot += 1 {
-			if fullTimetable[officeHour.Date][slot] == officeHour {
-				timetable[officeHour.Date] = make(map[int]OfficeHour)
-				timetable[officeHour.Date][slot] = officeHour
-			}
-		}
-	}
-	return fullTimetable, slots
-}
-
-func printTimetable(timetable map[Date]map[int]OfficeHour, slots []int) template.HTML {
-	var tableBody string
-
-	tableCell, _ := template.ParseFiles("templates/td.html")
-	for hour := 8; hour < 19; hour += 1 {
-		for minute := 0; minute < 60; minute += minuteGranularity {
-			tableBody += "<tr>"
-			if minute == 0 {
-				tableBody += fmt.Sprintf("<td>%d Uhr</td>\n", hour)
-			} else {
-				tableBody += "<td></td>\n"
-			}
-			for day := 0; day < 5; day += 1 {
-				for slot := 0; slot < slots[day]; slot += 1 {
-					current, currentExists := timetable[Date{day, hour, minute}][slot]
-
-					if currentExists { // This slot is taken by some office hour
-						var continued bool = false // is this slot occupied by the same office hour the previous minute?
-						var predecessorExists bool
-						var predecessor OfficeHour
-						if hour > 0 && minute < minuteGranularity {
-							predecessor, predecessorExists = timetable[Date{day, hour - 1, 60 - minuteGranularity}][slot]
-						} else {
-							predecessor, predecessorExists = timetable[Date{day, hour, minute - minuteGranularity}][slot]
-						}
-						if predecessorExists {
-							continued = (predecessor == current)
-						} else {
-							continued = false
-						}
-						if continued {
-							continue
-						} else {
-							var celldata bytes.Buffer
-							data := struct {
-								Rowspan     int
-								StartHour   int
-								StartMinute int
-								EndHour     int
-								EndMinute   int
-								CourseName  string
-								TutorName   string
-								RoomName    string
-							}{current.Duration / minuteGranularity,
-								current.Hour,
-								current.Minute,
-								current.Hour + ((current.Minute + current.Duration) / 60),
-								(current.Minute + current.Duration) % 60,
-								template.HTMLEscapeString(current.Course.Name),
-								current.Tutor.Name,
-								current.Room.Name,
-							}
-							tableCell.Execute(&celldata, data)
-							tableBody += celldata.String()
-						}
-					} else {
-						if slot+1 == slots[day] {
-							tableBody += "<td style=\"border-right: 1px dotted\"></td>\n"
-						} else {
-							tableBody += "<td></td>\n"
-						}
-					}
-				}
-			}
-			tableBody += "</tr>\n"
-		}
-	}
-	var table bytes.Buffer
-	tableTemplate, _ := template.ParseFiles("templates/officeHourTable.html")
-
-	tableData := struct {
-		ColspanMon int
-		ColspanTue int
-		ColspanWed int
-		ColspanThu int
-		ColspanFri int
-		TableBody  template.HTML
-	}{
-		slots[0],
-		slots[1],
-		slots[2],
-		slots[3],
-		slots[4],
-		template.HTML(tableBody),
-	}
-	tableTemplate.Execute(&table, tableData)
-	return template.HTML(table.String())
-}

repositories/course.go

@@ -0,0 +1,67 @@
+// course
+package repositories
+
+import (
+	"database/sql"
+	"sprechstundentool/models"
+)
+
+type CourseRepo struct {
+	db *sql.DB
+}
+
+func NewCourseRepo(db *sql.DB) *CourseRepo {
+	return &CourseRepo{
+		db: db,
+	}
+}
+
+func (r *CourseRepo) FindByName(name string) (models.Course, error) {
+	row := r.db.QueryRow("SELECT * FROM course WHERE name=?", name)
+	var course models.Course
+	if err := row.Scan(&course.Id, &course.Name); err != nil {
+		return models.Course{}, err
+	}
+	return course, nil
+}
+
+func (r *CourseRepo) FindById(id int) (models.Course, error) {
+	row := r.db.QueryRow("SELECT * FROM course WHERE id=?", id)
+	var course models.Course
+	if err := row.Scan(&course.Id, &course.Name); err != nil {
+		return models.Course{}, err
+	}
+	return course, nil
+}
+
+func (r *CourseRepo) GetAll() ([]models.Course, error) {
+	rows, err := r.db.Query("SELECT * FROM course")
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+
+	return r.getFromRows(rows)
+}
+
+func (r *CourseRepo) GetActive() ([]models.Course, error) {
+	rows, err := r.db.Query("SELECT * FROM course WHERE active")
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+
+	return r.getFromRows(rows)
+}
+
+func (r *CourseRepo) getFromRows(rows *sql.Rows) ([]models.Course, error) {
+	var courses []models.Course
+	for rows.Next() {
+		var course models.Course
+		if err := rows.Scan(&course.Id, &course.Name); err != nil {
+			return courses, err
+		}
+		courses = append(courses, course)
+	}
+	return courses, nil
+}

repositories/officeHour.go

@@ -0,0 +1,95 @@
+// officeHour
+package repositories
+
+import (
+	"database/sql"
+	"sprechstundentool/models"
+)
+
+type OfficeHourRepo struct {
+	db         *sql.DB
+	roomRepo   *RoomRepo
+	tutorRepo  *TutorRepo
+	courseRepo *CourseRepo
+}
+
+func NewOfficeHourRepo(db *sql.DB, roomRepo *RoomRepo, tutorRepo *TutorRepo, courseRepo *CourseRepo) *OfficeHourRepo {
+	return &OfficeHourRepo{
+		db:         db,
+		roomRepo:   roomRepo,
+		tutorRepo:  tutorRepo,
+		courseRepo: courseRepo,
+	}
+}
+
+func (r *OfficeHourRepo) GetAll() ([]models.OfficeHour, error) {
+	rows, err := r.db.Query("SELECT * FROM officeHour")
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	return r.getFromRows(rows)
+}
+
+func (r *OfficeHourRepo) FindByCourse(course models.Course) ([]models.OfficeHour, error) {
+	rows, err := r.db.Query("SELECT * FROM officeHour WHERE course=?", course.Id)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	return r.getFromRows(rows)
+}
+
+func (r *OfficeHourRepo) FindByRoom(room models.Room) ([]models.OfficeHour, error) {
+	rows, err := r.db.Query("SELECT * FROM officeHour WHERE room=?", room.Id)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	return r.getFromRows(rows)
+}
+
+func (r *OfficeHourRepo) FindById(id int) (models.OfficeHour, error) {
+	return r.getFromRow(r.db.QueryRow("SELECT * FROM officeHour WHERE id=?", id))
+
+}
+
+func (r *OfficeHourRepo) Add(officeHour models.OfficeHour) error {
+	return nil
+}
+
+func (r *OfficeHourRepo) Delete(officeHour models.OfficeHour) error {
+	return nil
+}
+
+func (r *OfficeHourRepo) getFromRow(row *sql.Row) (models.OfficeHour, error) {
+	var officeHour models.OfficeHour
+	var day, hour, minute, tutorid int
+	var roomName, courseName string
+	err := row.Scan(&officeHour.Id, &tutorid, &day, &hour, &minute, &roomName, &courseName, &officeHour.Week, &officeHour.Info, &officeHour.Active, &officeHour.Duration)
+	if err != nil {
+		return models.OfficeHour{}, err
+	}
+	officeHour.Date = models.Date{day, hour, minute}
+	officeHour.Room, _ = r.roomRepo.FindByName(roomName)
+	officeHour.Tutor, _ = r.tutorRepo.FindById(tutorid)
+	officeHour.Course, _ = r.courseRepo.FindByName(courseName)
+	return officeHour, nil
+}
+
+func (r *OfficeHourRepo) getFromRows(rows *sql.Rows) ([]models.OfficeHour, error) {
+	var officeHours []models.OfficeHour
+	for rows.Next() {
+		var officeHour models.OfficeHour
+		var day, hour, minute, tutorId, roomId, courseId int
+		if err := rows.Scan(&officeHour.Id, &tutorId, &day, &hour, &minute, &roomId, &courseId, &officeHour.Week, &officeHour.Info, &officeHour.Active, &officeHour.Duration); err != nil {
+			return officeHours, err
+		}
+		officeHour.Date = models.Date{day, hour, minute}
+		officeHour.Room, _ = r.roomRepo.FindById(roomId)
+		officeHour.Tutor, _ = r.tutorRepo.FindById(tutorId)
+		officeHour.Course, _ = r.courseRepo.FindById(courseId)
+		officeHours = append(officeHours, officeHour)
+	}
+	return officeHours, nil
+}

repositories/room.go

@@ -0,0 +1,59 @@
+// raum
+package repositories
+
+import (
+	"database/sql"
+	"sprechstundentool/models"
+)
+
+type RoomRepo struct {
+	db *sql.DB
+}
+
+func NewRoomRepo(db *sql.DB) *RoomRepo {
+	return &RoomRepo{
+		db: db,
+	}
+}
+
+func (r *RoomRepo) FindByName(name string) (models.Room, error) {
+	row := r.db.QueryRow("SELECT * FROM room WHERE name=?", name)
+	var room models.Room
+	if err := row.Scan(&room.Name, &room.MaxOccupy); err != nil {
+		return models.Room{}, err
+	}
+	return room, nil
+}
+
+func (r *RoomRepo) FindById(id int) (models.Room, error) {
+	row := r.db.QueryRow("SELECT * FROM room WHERE id=?", id)
+	var room models.Room
+	if err := row.Scan(&room.Id, &room.Name, &room.MaxOccupy); err != nil {
+		return models.Room{}, err
+	}
+	return room, nil
+}
+
+func (r *RoomRepo) GetAll() ([]models.Room, error) {
+	rows, err := r.db.Query("SELECT * FROM room")
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+
+	var rooms []models.Room
+	for rows.Next() {
+		var room models.Room
+		if err := rows.Scan(&room.Id, &room.Name, &room.MaxOccupy); err != nil {
+			return rooms, err
+		}
+		rooms = append(rooms, room)
+	}
+	return rooms, nil
+}
+func (r *RoomRepo) Save(room models.Room) error {
+	return nil
+}
+func (r *RoomRepo) Add(room models.Room) error {
+	return nil
+}

repositories/tutor.go

@@ -0,0 +1,68 @@
+// tutor
+package repositories
+
+import (
+	"database/sql"
+	"sprechstundentool/models"
+)
+
+type TutorRepo struct {
+	db *sql.DB
+}
+
+func NewTutorRepo(db *sql.DB) *TutorRepo {
+	return &TutorRepo{
+		db: db,
+	}
+}
+
+func (r *TutorRepo) FindByEmail(email string) ([]models.Tutor, error) {
+	rows, err := r.db.Query("SELECT * FROM tutor WHERE email=?", email)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+
+	var tutors []models.Tutor
+	for rows.Next() {
+		var tutor models.Tutor
+		if err := rows.Scan(&tutor.Id, &tutor.Name, &tutor.Email); err != nil {
+			return tutors, err
+		}
+		tutors = append(tutors, tutor)
+	}
+	return tutors, nil
+}
+
+func (r *TutorRepo) FindById(id int) (models.Tutor, error) {
+	row := r.db.QueryRow("SELECT * FROM tutor WHERE id=?", id)
+	var tutor models.Tutor
+	if err := row.Scan(&tutor.Id, &tutor.Name, &tutor.Email); err != nil {
+		return models.Tutor{}, err
+	}
+	return tutor, nil
+}
+
+func (r *TutorRepo) GetAll() ([]models.Tutor, error) {
+	rows, err := r.db.Query("SELECT * FROM tutor")
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+
+	var tutors []models.Tutor
+	for rows.Next() {
+		var tutor models.Tutor
+		if err := rows.Scan(&tutor.Id, &tutor.Name, &tutor.Email); err != nil {
+			return tutors, err
+		}
+		tutors = append(tutors, tutor)
+	}
+	return tutors, nil
+}
+func (r *TutorRepo) Save(tutor models.Tutor) error {
+	return nil
+}
+func (r *TutorRepo) Add(tutor models.Tutor) error {
+	return nil
+}

room.go

@@ -1,20 +0,0 @@
-// raum
-package main
-
-type Room struct {
-	Id         int
-	Name       string
-	Max_occupy int
-	Active     bool
-}
-
-func getRooms() []Room {
-	return []Room{
-		Room{1, "S2 15 345", 2, true},
-		Room{2, "S2 15 415", 1, true},
-		Room{3, "S2 15 336", 2, true},
-		Room{4, "S2 15 444", 1, true},
-		Room{5, "S2 15 333", 1, true},
-		Room{6, "S2 14 420", 1, false},
-		Room{7, "Sonstige", 255, true}}
-}

sqldb/sqldb.go

@@ -0,0 +1,17 @@
+package sqldb
+
+import (
+	"database/sql"
+
+	_ "github.com/mattn/go-sqlite3"
+)
+
+// ConnectDB opens a connection to the database
+func ConnectDB() *sql.DB {
+	db, err := sql.Open("sqlite3", "sprechstunden.db")
+	if err != nil {
+		panic(err.Error())
+	}
+
+	return db
+}

sqlite.sql

@@ -0,0 +1,62 @@
+--
+-- Table structure for table `room`
+--
+
+DROP TABLE IF EXISTS `room`;
+CREATE TABLE `room` (
+  `id` INTEGER PRIMARY KEY,
+  `name` text NOT NULL,
+  `max_occupy` int DEFAULT NULL
+);
+
+--
+-- Table structure for table `request`
+--
+
+DROP TABLE IF EXISTS `request`;
+CREATE TABLE `request` (
+  `id` INTEGER PRIMARY KEY,
+  `officeHour` int DEFAULT NULL,
+  `type` int DEFAULT NULL,
+  `code` text DEFAULT NULL
+);
+
+--
+-- Table structure for table `officeHour`
+--
+
+DROP TABLE IF EXISTS `officeHour`;
+CREATE TABLE `officeHour` (
+  `id` INTEGER PRIMARY KEY,
+  `tutor` int DEFAULT NULL,
+  `day` int DEFAULT NULL,
+  `hour` int DEFAULT NULL,
+  `minute` int DEFAULT NULL,
+  `room` int DEFAULT NULL,
+  `course` int DEFAULT NULL,
+  `week` int DEFAULT NULL,
+  `info` text DEFAULT NULL,
+  `active` bool DEFAULT NULL,
+  `duration` int DEFAULT NULL
+);
+
+--
+-- Table structure for table `tutor`
+--
+
+DROP TABLE IF EXISTS `tutor`;
+CREATE TABLE `tutor` (
+  `id` INTEGER PRIMARY KEY,
+  `name` tinytext DEFAULT NULL,
+  `email` tinytext DEFAULT NULL
+);
+
+--
+-- Table structure for table `course`
+--
+
+DROP TABLE IF EXISTS `course`;
+CREATE TABLE `course` (
+  `id` INTEGER PRIMARY KEY,
+  `name` varchar(255) DEFAULT NULL
+);

templates/index.html

@@ -6,7 +6,7 @@
     <form method="GET" action="/getByCourse">
       <label for="veranstaltung">Veranstaltung: </label>
       <select name="veranstaltung" size="1" onchange="document.forms[0].submit()">
-        <option value="0">Alle</option>
+        <option value="">Alle</option>
         {{range $course := .Courses}}
         <option value="{{$course.Id}}"{{if eq $course.Id $.SelectedCourse}} selected{{end}}>{{$course.Name}}</option>{{end}}
       </select>
@@ -15,7 +15,7 @@
     <form method="GET" action="/getByRoom">
       <label for="raum">Raum: </label>
       <select name="raum" size="1" onchange="document.forms[1].submit()">
-        <option value="0">Alle</option>
+        <option value="">Alle</option>
         {{range $room := .Rooms}}
          <option value="{{$room.Id}}"{{if eq $room.Id $.SelectedRoom}} selected{{end}}>{{$room.Name}}</option>{{end}}
       </select> 

tutor.go

@@ -1,8 +0,0 @@
-// tutor
-package main
-
-type Tutor struct {
-	Id    int
-	Name  string
-	Email string
-}