Datenbanken, erster Versuch

2022-08-29 22:58:19 +02:00 · 2022-08-29 22:58:19 +02:00 · 766aedf22d
commit 766aedf22d
parent b26544756a
21 changed files with 678 additions and 320 deletions
--- a/controllers/timetable.go
+++ b/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())
+}