Scontrini-TUI-Client/main.go

225 lines
4.6 KiB
Go
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2023-10-19 18:08:59 +02:00
package main
import (
"fmt"
"os"
"strings"
"github.com/gdamore/tcell/v2"
"github.com/rivo/tview"
)
const (
USB_SERIAL_PORT = "/dev/ttyUSB0"
MAIN_WIDTH = 240
MAIN_HEIGHT = 55
)
var (
App *tview.Application
Pages *tview.Pages
)
func main() {
stat, _ := os.Stdin.Stat()
// check if data is being piped from stdin
if (stat.Mode() & os.ModeCharDevice) == 0 {
printFromStdIn()
} else {
startTui()
}
}
func writeToPrinter(text string) {
// move outside
serial_port, err := os.OpenFile(USB_SERIAL_PORT, os.O_WRONLY, 0755)
if err != nil {
panic(err)
}
fmt.Fprintln(serial_port, text)
}
/**
* If text gets piped from terminal, print it
*/
func printFromStdIn() {
text := ""
fmt.Scanf("%s", text)
writeToPrinter(text)
}
func startTui() {
App = tview.NewApplication()
print_page := createPrintPage(MAIN_WIDTH, MAIN_HEIGHT)
pizza_page := createPizzaPage(MAIN_WIDTH, MAIN_HEIGHT)
Pages = tview.NewPages().
AddPage("print", print_page, true, true).
AddPage("pizza", pizza_page, true, false)
if err := App.SetRoot(Pages, true).Run(); err != nil {
panic(err)
}
}
/**
* Return a page with a TextView used to print
*/
func createPrintPage(width, height int) *tview.Grid {
page := tview.NewGrid()
textview := tview.NewTextView().
SetText("[green]SCRIVI QUELLO CHE VUOI STAMPARE[white]").
SetTextAlign(tview.AlignCenter).
SetDynamicColors(true)
setCommonBoxAttributes(textview.Box, "Scontrini")
textarea := tview.NewTextArea()
setCommonBoxAttributes(textarea.Box, "")
print_button := tview.NewButton("Stampa").
SetSelectedFunc(func() {
writeToPrinter(textarea.GetText())
})
pizza_button := tview.NewButton("Pizza").
SetSelectedFunc(func() {
Pages.SwitchToPage("pizza")
})
// define keys and behaviour for selected events
textarea.SetInputCapture(func(event *tcell.EventKey) *tcell.EventKey {
if event.Key() == tcell.KeyTAB {
App.SetFocus(print_button)
return nil
}
return event
})
print_button.SetInputCapture(func(event *tcell.EventKey) *tcell.EventKey {
if event.Key() == tcell.KeyTAB {
App.SetFocus(pizza_button)
return nil
}
return event
})
pizza_button.SetInputCapture(func(event *tcell.EventKey) *tcell.EventKey {
if event.Key() == tcell.KeyTAB {
App.SetFocus(textarea)
return nil
}
return event
})
page.SetColumns(1/5, 1/5, 1/5, 1/5, 1/5).
SetRows(1/5, 1/5, 1/5, 1/5, 1/5).
AddItem(textview, 1, 1, 1, 3, 0, 0, false).
AddItem(textarea, 2, 1, 1, 3, 0, 0, true).
AddItem(print_button, 3, 1, 1, 1, 0, 0, false).
AddItem(pizza_button, 3, 3, 1, 1, 0, 0, false)
return page
}
/**
* Return a page with a Table used to print the pizza order
*/
func createPizzaPage(width, height int) *tview.Grid {
pizza_page := tview.NewGrid()
textview := tview.NewTextView().
SetText("[green]STAMPA LE PIZZE[white]").
SetTextAlign(tview.AlignCenter).
SetDynamicColors(true)
setCommonBoxAttributes(textview.Box, "Scontrini")
row_index := 0
table := tview.NewTable().
SetBorders(true).
InsertRow(row_index).
InsertColumn(0).
InsertColumn(1)
setCommonBoxAttributes(table.Box, "")
table.SetCellSimple(0, 0, "Quantità")
table.SetCellSimple(0, 1, "Pizza")
print_button := tview.NewButton("Stampa").
SetSelectedFunc(func() {
Pages.SwitchToPage("print")
})
pizza_button := tview.NewButton("Pizza").
SetSelectedFunc(func() {
printPizza(table)
})
// define keys and behaviour for selected events
table.SetInputCapture(func(event *tcell.EventKey) *tcell.EventKey {
if event.Key() == tcell.KeyTAB {
App.SetFocus(print_button)
return nil
}
if event.Key() == tcell.KeyEnter {
row_index += 1
table.InsertRow(row_index)
App.Draw()
return nil
}
return event
})
print_button.SetInputCapture(func(event *tcell.EventKey) *tcell.EventKey {
if event.Key() == tcell.KeyTAB {
App.SetFocus(pizza_button)
return nil
}
return event
})
pizza_button.SetInputCapture(func(event *tcell.EventKey) *tcell.EventKey {
if event.Key() == tcell.KeyTAB {
App.SetFocus(table)
return nil
}
return event
})
pizza_page.SetColumns(1/5, 1/5, 1/5, 1/5, 1/5).
SetRows(1/5, 1/5, 1/5, 1/5, 1/5).
AddItem(textview, 1, 1, 1, 3, 0, 0, false).
AddItem(table, 2, 2, 1, 1, 0, 0, true).
AddItem(print_button, 3, 1, 1, 1, 0, 0, false).
AddItem(pizza_button, 3, 3, 1, 1, 0, 0, false)
return pizza_page
}
/**
* Format the pizza order table and print it
*/
func printPizza(table *tview.Table) {
// TODO
}
/**
* Create borders around the Box and add the title
*/
func setCommonBoxAttributes(box *tview.Box, title string) {
box.SetBorder(true).
SetTitle(strings.ToUpper(title)).
SetBorderPadding(2, 2, 4, 4)
}