add OS2L device creation

hardware/FTDIDriver.go

@@ -0,0 +1,140 @@
+package hardware
+
+import (
+	"bufio"
+	"context"
+	_ "embed"
+	"fmt"
+	"os"
+	"os/exec"
+	goRuntime "runtime"
+	"strconv"
+	"strings"
+	"time"
+)
+
+const (
+	scanDelay = 4 * time.Second // Waiting delay before scanning the FTDI devices
+)
+
+// FTDIDriver represents how the protocol is defined
+type FTDIDriver struct {
+	peripherals map[string]Peripheral
+}
+
+// NewFTDIDriver creates a new FTDI finder
+func NewFTDIDriver() *FTDIDriver {
+	return &FTDIDriver{
+		peripherals: make(map[string]Peripheral),
+	}
+}
+
+// Initialize initializes the FTDI driver
+func (d *FTDIDriver) Initialize() error {
+	if goRuntime.GOOS != "windows" {
+		return fmt.Errorf("<!> The FTDI driver is not compatible with your platform yet (%s)", goRuntime.GOOS)
+	}
+	fmt.Println("FTDI driver initialized")
+	return nil
+}
+
+// GetName returns the name of the driver
+func (d *FTDIDriver) GetName() string {
+	return "FTDI"
+}
+
+// GetPeripheral gets the peripheral that correspond to the specified ID
+func (d *FTDIDriver) GetPeripheral(peripheralID string) (Peripheral, bool) {
+	// Return the specified peripheral
+	peripheral := d.peripherals[peripheralID]
+	if peripheral == nil {
+		fmt.Println("Unable to get the peripheral with the driver")
+		return nil, false
+	}
+	fmt.Println("Peripheral found by the FTDI driver")
+
+	return peripheral, true
+}
+
+//go:embed third-party/ftdi/detectFTDI.exe
+var findFTDI []byte
+
+// Scan scans the FTDI peripherals
+func (d *FTDIDriver) Scan(ctx context.Context) error {
+	time.Sleep(scanDelay)
+
+	// Create a temporary file
+	tempFile, err := os.CreateTemp("", "findFTDI*.exe")
+	if err != nil {
+		return err
+	}
+	defer os.Remove(tempFile.Name())
+
+	// Write the embedded executable to the temp file
+	if _, err := tempFile.Write(findFTDI); err != nil {
+		return err
+	}
+	tempFile.Close()
+
+	ftdiPeripherals := make(map[string]Peripheral)
+
+	finder := exec.Command(tempFile.Name())
+
+	stdout, err := finder.StdoutPipe()
+	if err != nil {
+		return fmt.Errorf("Unable to create the stdout pipe: %s", err)
+	}
+
+	stderr, err := finder.StderrPipe()
+	if err != nil {
+		return fmt.Errorf("Unable to create the stderr pipe: %s", err)
+	}
+
+	err = finder.Start()
+	if err != nil {
+		return fmt.Errorf("Unable to find FTDI devices: %s", err)
+	}
+
+	scannerErr := bufio.NewScanner(stderr)
+	for scannerErr.Scan() {
+		return fmt.Errorf("Unable to find FTDI devices: %s", scannerErr.Text())
+	}
+
+	scanner := bufio.NewScanner(stdout)
+	for scanner.Scan() {
+		deviceString := scanner.Text()
+		// The program output is like '0:1:2' where 0 is the location, 1 is the S/N and 2 is the name
+		deviceInfo := strings.Split(deviceString, ":")
+
+		fmt.Println("FTDI device: " + deviceString)
+		// Convert the location to an integer
+		location, err := strconv.Atoi(deviceInfo[0])
+		if err != nil {
+			location = -1
+		}
+		// Add the peripheral to the temporary list
+		peripheral, err := NewFTDIPeripheral(deviceInfo[2], deviceInfo[1], location)
+		if err != nil {
+			return fmt.Errorf("Unable to create the FTDI peripheral: %v", err)
+		}
+		ftdiPeripherals[deviceInfo[1]] = peripheral
+	}
+	// Compare with the current peripherals to detect arrivals/removals
+	removedList, addedList := comparePeripherals(d.peripherals, ftdiPeripherals)
+	// Emit the events
+	emitPeripheralsEvents(ctx, removedList, PeripheralRemoval)
+	emitPeripheralsEvents(ctx, addedList, PeripheralArrival)
+	// Store the new peripherals list
+	d.peripherals = ftdiPeripherals
+	return nil
+}
+
+// CreatePeripheral is not implemented here
+func (d *FTDIDriver) CreatePeripheral(context.Context) (Peripheral, error) {
+	return nil, nil
+}
+
+// RemovePeripheral is not implemented here
+func (d *FTDIDriver) RemovePeripheral(serialNumber string) error {
+	return nil
+}