Migrate all modules to their own subfolder

Handles #375

modules/system/system_info.go

@@ -0,0 +1,63 @@
+// +build !windows
+
+package system
+
+import (
+	"os/exec"
+	"runtime"
+	"strings"
+
+	"github.com/wtfutil/wtf/wtf"
+)
+
+type SystemInfo struct {
+	ProductName    string
+	ProductVersion string
+	BuildVersion   string
+}
+
+func NewSystemInfo() *SystemInfo {
+	m := make(map[string]string)
+
+	arg := []string{}
+
+	var cmd *exec.Cmd
+	switch runtime.GOOS {
+	case "linux":
+		arg = append(arg, "-a")
+		cmd = exec.Command("lsb_release", arg...)
+	case "darwin":
+		cmd = exec.Command("sw_vers", arg...)
+	default:
+		cmd = exec.Command("sw_vers", arg...)
+	}
+
+	raw := wtf.ExecuteCommand(cmd)
+
+	for _, row := range strings.Split(raw, "\n") {
+		parts := strings.Split(row, ":")
+		if len(parts) < 2 {
+			continue
+		}
+
+		m[strings.TrimSpace(parts[0])] = strings.TrimSpace(parts[1])
+	}
+
+	var sysInfo *SystemInfo
+	switch runtime.GOOS {
+	case "linux":
+		sysInfo = &SystemInfo{
+			ProductName:    m["Distributor ID"],
+			ProductVersion: m["Description"],
+			BuildVersion:   m["Release"],
+		}
+	default:
+		sysInfo = &SystemInfo{
+			ProductName:    m["ProductName"],
+			ProductVersion: m["ProductVersion"],
+			BuildVersion:   m["BuildVersion"],
+		}
+
+	}
+	return sysInfo
+}

modules/system/system_info_windows.go

@@ -0,0 +1,36 @@
+// +build windows
+
+package system
+
+import (
+	"os/exec"
+	"strings"
+)
+
+type SystemInfo struct {
+	ProductName    string
+	ProductVersion string
+	BuildVersion   string
+}
+
+func NewSystemInfo() *SystemInfo {
+	m := make(map[string]string)
+
+	cmd := exec.Command("powershell.exe", "(Get-CimInstance Win32_OperatingSystem).version")
+	out, err := cmd.Output()
+	if err != nil {
+		panic(err)
+	}
+	s := strings.Split(string(out), ".")
+	m["ProductName"] = "Windows"
+	m["ProductVersion"] = "Windows " + s[0] + "." + s[1]
+	m["BuildVersion"] = s[2]
+
+	sysInfo := SystemInfo{
+		ProductName:    m["ProductName"],
+		ProductVersion: m["ProductVersion"],
+		BuildVersion:   m["BuildVersion"],
+	}
+
+	return &sysInfo
+}

modules/system/widget.go

@@ -0,0 +1,56 @@
+package system
+
+import (
+	"fmt"
+	"time"
+
+	"github.com/rivo/tview"
+	"github.com/wtfutil/wtf/wtf"
+)
+
+type Widget struct {
+	wtf.TextWidget
+
+	systemInfo *SystemInfo
+	Date       string
+	Version    string
+}
+
+func NewWidget(app *tview.Application, date, version string) *Widget {
+	widget := Widget{
+		TextWidget: wtf.NewTextWidget(app, "System", "system", false),
+
+		Date:    date,
+		Version: version,
+	}
+
+	widget.systemInfo = NewSystemInfo()
+
+	return &widget
+}
+
+func (widget *Widget) Refresh() {
+	widget.View.SetText(
+		fmt.Sprintf(
+			"%8s: %s\n%8s: %s\n\n%8s: %s\n%8s: %s",
+			"Built",
+			widget.prettyDate(),
+			"Vers",
+			widget.Version,
+			"OS",
+			widget.systemInfo.ProductVersion,
+			"Build",
+			widget.systemInfo.BuildVersion,
+		),
+	)
+}
+
+func (widget *Widget) prettyDate() string {
+	str, err := time.Parse(wtf.TimestampFormat, widget.Date)
+
+	if err != nil {
+		return err.Error()
+	}
+
+	return str.Format("Jan _2, 15:04")
+}