package main

import (
	"encoding/csv"
	"fmt"
	"log"
	"math"
	"os"

	"github.com/signintech/gopdf"
)

const title string = "Teilnahmeliste der StugA Lehramt GO-Vollversammlung 07.04.2026"

func main() {
	// Prepare data
	file, err := os.Open("list.csv")
	if err != nil {
		log.Fatalln("Error while reading file: " + err.Error())
	}

	reader := csv.NewReader(file)
	reader.LazyQuotes = true
	records, errRecords := reader.ReadAll()

	if errRecords != nil {
		log.Fatalln("Error while parsing file: " + errRecords.Error())
	}

	log.Println("hey")

	defer file.Close()

	// Prepare document
	pdf := &gopdf.GoPdf{}
	pdf.Start(gopdf.Config{
		PageSize: *gopdf.PageSizeA4,
	})

	pdf.AddTTFFont("inter", "./inter.ttf")
	pdf.SetMargins(20, 20, 20, 20)

	var tableEntries [][]string
	var tablePageIndex = 0
	var tablePageLength = 36
	var isFirst bool = true

	// Write data to document
	for index, record := range records[1:] {
		tableEntries = append(tableEntries, []string{
			fmt.Sprintf("%d", index+1),
			record[3],
			record[5],
		})
		// if index%31 == 0 {
		// 	pdf.AddPage()
		// }
	}

	iterations := math.Ceil(float64(len(tableEntries)) / 31.0)
	fmt.Println(iterations)

	for i := 0; i < int(iterations); i += 1 {
		// create each page here
		pdf.AddPage()
		var table gopdf.TableLayout

		if isFirst {
			pdf.SetFont("inter", "", 12)
			pdf.Cell(nil, title)

			pdf.SetFont("inter", "", 10)
			isFirst = false

			table = pdf.NewTableLayout(20, 40, 21, 1)
		} else {
			table = pdf.NewTableLayout(20, 20, 21, 1)
		}
		table.AddColumn("#", 30, "left")
		table.AddColumn("Name", 170, "left")
		table.AddColumn("Fächer", 340, "left")

		for i := tablePageIndex; i < tablePageIndex+tablePageLength; i += 1 {
			if i >= len(tableEntries) {
				break
			}
			table.AddRow(tableEntries[i])
		}

		table.DrawTable()

		tablePageIndex += tablePageLength

		pdf.SetXY(573, 815)
		pdf.Cell(nil, fmt.Sprintf("%d", int(i+1)))
	}

	// table.SetTableStyle(gopdf.CellStyle{
	// 	BorderStyle: gopdf.BorderStyle{
	// 		Top:    true,
	// 		Left:   true,
	// 		Bottom: true,
	// 		Right:  true,
	// 		Width:  1.0,
	// 	},
	// 	FillColor: gopdf.RGBColor{R: 255, G: 255, B: 255},
	// 	TextColor: gopdf.RGBColor{R: 0, G: 0, B: 0},
	// 	FontSize:  10,
	// })

	// // Set the style for table header
	// table.SetHeaderStyle(gopdf.CellStyle{
	// 	BorderStyle: gopdf.BorderStyle{
	// 		Top:      true,
	// 		Left:     true,
	// 		Bottom:   true,
	// 		Right:    true,
	// 		Width:    2.0,
	// 		RGBColor: gopdf.RGBColor{R: 100, G: 150, B: 255},
	// 	},
	// 	FillColor: gopdf.RGBColor{R: 255, G: 200, B: 200},
	// 	TextColor: gopdf.RGBColor{R: 255, G: 100, B: 100},
	// 	Font:      "font2",
	// 	FontSize:  12,
	// })

	// table.SetCellStyle(gopdf.CellStyle{
	// 	BorderStyle: gopdf.BorderStyle{
	// 		Right:    true,
	// 		Bottom:   true,
	// 		Width:    0.5,
	// 		RGBColor: gopdf.RGBColor{R: 0, G: 0, B: 0},
	// 	},
	// 	FillColor: gopdf.RGBColor{R: 255, G: 255, B: 255},
	// 	TextColor: gopdf.RGBColor{R: 0, G: 0, B: 0},
	// 	Font:      "font1",
	// 	FontSize:  10,
	// })

	// Finish document
	pdf.WritePdf("vvliste.pdf")
}