separaded endpoints + cleaned page templates + added constants to time formatting

Backend/endpoints/pdf-create.go

@@ -0,0 +1,161 @@
+package endpoints
+
+import (
+	"arbeitszeitmessung/helper"
+	"arbeitszeitmessung/helper/paramParser"
+	"arbeitszeitmessung/models"
+	"bytes"
+	"fmt"
+	"log"
+	"log/slog"
+	"net/http"
+	"time"
+
+	"github.com/Dadido3/go-typst"
+)
+
+func convertDaysToTypst(days []models.IWorkDay, u models.User) ([]typstDay, error) {
+	var typstDays []typstDay
+	for _, day := range days {
+		var thisTypstDay typstDay
+		work, pause, overtime := day.GetAllWorkTimesVirtual(u)
+		thisTypstDay.Date = day.Date().Format("02.01.2006")
+		thisTypstDay.Worktime = helper.FormatDurationFill(work, true)
+		thisTypstDay.Pausetime = helper.FormatDurationFill(pause, true)
+		thisTypstDay.Overtime = helper.FormatDurationFill(overtime, true)
+		thisTypstDay.IsFriday = day.Date().Weekday() == time.Friday
+
+		thisTypstDay.DayParts = convertDayToTypstDayParts(day, u)
+		typstDays = append(typstDays, thisTypstDay)
+	}
+	return typstDays, nil
+}
+
+func convertDayToTypstDayParts(day models.IWorkDay, user models.User) []typstDayPart {
+	var typstDayParts []typstDayPart
+	if day.IsWorkDay() {
+		workDay, _ := day.(*models.WorkDay)
+		for i := 0; i < len(workDay.Bookings); i += 2 {
+			var typstDayPart typstDayPart
+			typstDayPart.BookingFrom = workDay.Bookings[i].Timestamp.Format("15:04")
+			typstDayPart.BookingTo = workDay.Bookings[i+1].Timestamp.Format("15:04")
+			typstDayPart.WorkType = workDay.Bookings[i].BookingType.Name
+			typstDayPart.IsWorkDay = true
+			typstDayParts = append(typstDayParts, typstDayPart)
+		}
+		if day.IsKurzArbeit() {
+			tsFrom, tsTo := workDay.GenerateKurzArbeitBookings(user)
+			typstDayParts = append(typstDayParts, typstDayPart{
+				BookingFrom: tsFrom.Format("15:04"),
+				BookingTo:   tsTo.Format("15:04"),
+				WorkType:    "Kurzarbeit",
+				IsWorkDay:   true,
+			})
+		}
+	} else {
+		absentDay, _ := day.(*models.Absence)
+		typstDayParts = append(typstDayParts, typstDayPart{IsWorkDay: false, WorkType: absentDay.AbwesenheitTyp.Name})
+	}
+	return typstDayParts
+}
+
+func renderPDF(days []typstDay, metadata typstMetadata) (bytes.Buffer, error) {
+	var markup bytes.Buffer
+	var output bytes.Buffer
+
+	if err := typst.InjectValues(&markup, map[string]any{"meta": metadata, "days": days}); err != nil {
+		return output, err
+	}
+
+	// Import the template and invoke the template function with the custom data.
+	// Show is used to replace the current document with whatever content the template function in `template.typ` returns.
+	markup.WriteString(`
+		#import "template.typ": abrechnung
+		#show: doc => abrechnung(meta, days)
+		`)
+
+	// Compile the prepared markup with Typst and write the result it into `output.pdf`.
+	// f, err := os.Create("output.pdf")
+	// if err != nil {
+	// 	log.Panicf("Failed to create output file: %v.", err)
+	// }
+	// defer f.Close()
+	//
+
+	typstCLI := typst.CLI{}
+	if err := typstCLI.Compile(&markup, &output, nil); err != nil {
+		return output, err
+	}
+	return output, nil
+}
+
+func PDFHandler(w http.ResponseWriter, r *http.Request) {
+	helper.RequiresLogin(Session, w, r)
+	pp := paramParser.New(r.URL.Query())
+	startDate := pp.ParseTimestamp("start_date", time.DateOnly, time.Now())
+	if startDate.Day() > 1 {
+		startDate = startDate.AddDate(0, 0, -(startDate.Day() - 1))
+	}
+	endDate := startDate.AddDate(0, 1, -1)
+
+	user, err := models.GetUserFromSession(Session, r.Context())
+	if err != nil {
+		log.Println("Error getting user!")
+	}
+
+	//TODO: only accepted weeks
+
+	weeks := models.GetDays(user, startDate, endDate, false)
+	var aggregatedOvertime, aggregatedWorkTime time.Duration
+	for _, day := range weeks {
+		aggregatedOvertime += day.TimeOvertimeReal(user)
+		aggregatedWorkTime += day.TimeWorkVirtual(user)
+	}
+
+	typstDays, err := convertDaysToTypst(weeks, user)
+	if err != nil {
+		log.Panicf("Failed to convert days!")
+	}
+	metadata := typstMetadata{
+		EmployeeName:     fmt.Sprintf("%s %s", user.Vorname, user.Name),
+		TimeRange:        fmt.Sprintf("%s - %s", startDate.Format("02.01.2006"), endDate.Format("02.01.2006")),
+		Overtime:         helper.FormatDurationFill(aggregatedOvertime, true),
+		WorkTime:         helper.FormatDurationFill(aggregatedWorkTime, true),
+		OvertimeTotal:    "",
+		CurrentTimestamp: time.Now().Format("02.01.2006 - 15:04 Uhr"),
+	}
+
+	output, err := renderPDF(typstDays, metadata)
+	if err != nil {
+		slog.Warn("Could not create pdf report", slog.Any("Error", err))
+	}
+
+	w.Header().Set("Content-type", "application/pdf")
+	output.WriteTo(w)
+	w.WriteHeader(200)
+}
+
+type typstMetadata struct {
+	TimeRange        string `json:"time-range"`
+	EmployeeName     string `json:"employee-name"`
+	WorkTime         string `json:"worktime"`
+	Overtime         string `json:"overtime"`
+	OvertimeTotal    string `json:"overtime-total"`
+	CurrentTimestamp string `json:"current-timestamp"`
+}
+
+type typstDayPart struct {
+	BookingFrom string `json:"booking-from"`
+	BookingTo   string `json:"booking-to"`
+	WorkType    string `json:"worktype"`
+	IsWorkDay   bool   `json:"is-workday"`
+}
+
+type typstDay struct {
+	Date      string         `json:"date"`
+	DayParts  []typstDayPart `json:"day-parts"`
+	Worktime  string         `json:"worktime"`
+	Pausetime string         `json:"pausetime"`
+	Overtime  string         `json:"overtime"`
+	IsFriday  bool           `json:"is-weekend"`
+}