Merge pull request #1 from wailsapp/Port-Setup

Port setup

.vscode/launch.json

@@ -0,0 +1,19 @@
+{
+  // Use IntelliSense to learn about possible attributes.
+  // Hover to view descriptions of existing attributes.
+  // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
+  "version": "0.2.0",
+  "configurations": [
+    {
+      "name": "Launch",
+      "type": "go",
+      "request": "launch",
+      "mode": "auto",
+      "program": "${workspaceFolder}/cmd/wails/main.go",
+      "env": {},
+      "args": [
+        "setup"
+      ]
+    }
+  ]
+}

cmd/cli.go

@@ -0,0 +1,268 @@
+package cmd
+
+import (
+	"flag"
+	"fmt"
+	"os"
+	"strings"
+)
+
+// NewCli - Creates a new Cli application object
+func NewCli(name, description string) *Cli {
+	result := &Cli{}
+	result.rootCommand = NewCommand(name, description, result, "")
+	result.log = NewLogger()
+	return result
+}
+
+// Cli - The main application object
+type Cli struct {
+	rootCommand    *Command
+	defaultCommand *Command
+	preRunCommand  func(*Cli) error
+	log            *Logger
+}
+
+// Version - Set the Application version string
+func (c *Cli) Version(version string) {
+	c.rootCommand.AppVersion = version
+}
+
+// PrintHelp - Prints the application's help
+func (c *Cli) PrintHelp() {
+	c.rootCommand.PrintHelp()
+}
+
+// Run - Runs the application with the given arguments
+func (c *Cli) Run(args ...string) error {
+	if c.preRunCommand != nil {
+		err := c.preRunCommand(c)
+		if err != nil {
+			return err
+		}
+	}
+	if len(args) == 0 {
+		args = os.Args[1:]
+	}
+	return c.rootCommand.Run(args)
+}
+
+// DefaultCommand - Sets the given command as the command to run when
+// no other commands given
+func (c *Cli) DefaultCommand(defaultCommand *Command) *Cli {
+	c.defaultCommand = defaultCommand
+	return c
+}
+
+// Command - Adds a command to the application
+func (c *Cli) Command(name, description string) *Command {
+	return c.rootCommand.Command(name, description)
+}
+
+// PreRun - Calls the given function before running the specific command
+func (c *Cli) PreRun(callback func(*Cli) error) {
+	c.preRunCommand = callback
+}
+
+// BoolFlag - Adds a boolean flag to the root command
+func (c *Cli) BoolFlag(name, description string, variable *bool) *Command {
+	c.rootCommand.BoolFlag(name, description, variable)
+	return c.rootCommand
+}
+
+// StringFlag - Adds a string flag to the root command
+func (c *Cli) StringFlag(name, description string, variable *string) *Command {
+	c.rootCommand.StringFlag(name, description, variable)
+	return c.rootCommand
+}
+
+// Action represents a function that gets calls when the command is called by
+// the user
+type Action func() error
+
+// Command represents a command that may be run by the user
+type Command struct {
+	Name              string
+	CommandPath       string
+	Shortdescription  string
+	Longdescription   string
+	AppVersion        string
+	SubCommands       []*Command
+	SubCommandsMap    map[string]*Command
+	longestSubcommand int
+	ActionCallback    Action
+	App               *Cli
+	Flags             *flag.FlagSet
+	flagCount         int
+	log               *Logger
+	helpFlag          bool
+}
+
+// NewCommand creates a new Command
+func NewCommand(name string, description string, app *Cli, parentCommandPath string) *Command {
+	result := &Command{
+		Name:             name,
+		Shortdescription: description,
+		SubCommandsMap:   make(map[string]*Command),
+		App:              app,
+	}
+
+	// Set up command path
+	if parentCommandPath != "" {
+		result.CommandPath += parentCommandPath + " "
+	}
+	result.CommandPath += name
+
+	// Set up flag set
+	result.Flags = flag.NewFlagSet(result.CommandPath, flag.ContinueOnError)
+	result.BoolFlag("help", "Get help on the '"+result.CommandPath+"' command.", &result.helpFlag)
+
+	// result.Flags.Usage = result.PrintHelp
+
+	return result
+}
+
+// parseFlags parses the given flags
+func (c *Command) parseFlags(args []string) error {
+	// Parse flags
+	tmp := os.Stderr
+	os.Stderr = nil
+	err := c.Flags.Parse(args)
+	os.Stderr = tmp
+	if err != nil {
+		fmt.Printf("Error: %s\n\n", err.Error())
+		c.PrintHelp()
+	}
+	return err
+}
+
+// Run - Runs the Command with the given arguments
+func (c *Command) Run(args []string) error {
+
+	// If we have arguments, process them
+	if len(args) > 0 {
+		// Check for subcommand
+		subcommand := c.SubCommandsMap[args[0]]
+		if subcommand != nil {
+			return subcommand.Run(args[1:])
+		}
+
+		// Parse flags
+		err := c.parseFlags(args)
+		if err != nil {
+			fmt.Printf("Error: %s\n\n", err.Error())
+			c.PrintHelp()
+			return err
+		}
+
+		// Help takes precedence
+		if c.helpFlag {
+			c.PrintHelp()
+			return nil
+		}
+	}
+
+	// Do we have an action?
+	if c.ActionCallback != nil {
+		return c.ActionCallback()
+	}
+
+	// If we haven't specified a subcommand
+	// check for an app level default command
+	if c.App.defaultCommand != nil {
+		// Prevent recursion!
+		if c.App.defaultCommand != c {
+			return c.App.defaultCommand.Run(args)
+		}
+	}
+
+	// Nothing left we can do
+	c.PrintHelp()
+	return nil
+}
+
+// Action - Define an action from this command
+func (c *Command) Action(callback Action) *Command {
+	c.ActionCallback = callback
+	return c
+}
+
+// PrintHelp - Output the help text for this command
+func (c *Command) PrintHelp() {
+	versionString := c.AppVersion
+	if versionString != "" {
+		versionString = " " + versionString
+	}
+	commandTitle := c.CommandPath
+	if c.Shortdescription != "" {
+		commandTitle += " - " + c.Shortdescription
+	}
+	// Ignore root command
+	if c.CommandPath != c.Name {
+		c.log.Yellow(commandTitle)
+	}
+	if c.Longdescription != "" {
+		fmt.Println()
+		fmt.Println(c.Longdescription + "\n")
+	}
+	if len(c.SubCommands) > 0 {
+		fmt.Println("")
+		c.log.White("Available commands:")
+		fmt.Println("")
+		for _, subcommand := range c.SubCommands {
+			spacer := strings.Repeat(" ", 3+c.longestSubcommand-len(subcommand.Name))
+			isDefault := ""
+			if subcommand.isDefaultCommand() {
+				isDefault = "[default]"
+			}
+			fmt.Printf("   %s%s%s %s\n", subcommand.Name, spacer, subcommand.Shortdescription, isDefault)
+		}
+	}
+	if c.flagCount > 0 {
+		fmt.Println("")
+		c.log.White("Flags:")
+		fmt.Println()
+		c.Flags.SetOutput(os.Stdout)
+		c.Flags.PrintDefaults()
+		c.Flags.SetOutput(os.Stderr)
+
+	}
+	fmt.Println()
+}
+
+// isDefaultCommand returns true if called on the default command
+func (c *Command) isDefaultCommand() bool {
+	return c.App.defaultCommand == c
+}
+
+// Command - Defines a subcommand
+func (c *Command) Command(name, description string) *Command {
+	result := NewCommand(name, description, c.App, c.CommandPath)
+	result.log = c.log
+	c.SubCommands = append(c.SubCommands, result)
+	c.SubCommandsMap[name] = result
+	if len(name) > c.longestSubcommand {
+		c.longestSubcommand = len(name)
+	}
+	return result
+}
+
+// BoolFlag - Adds a boolean flag to the command
+func (c *Command) BoolFlag(name, description string, variable *bool) *Command {
+	c.Flags.BoolVar(variable, name, *variable, description)
+	c.flagCount++
+	return c
+}
+
+// StringFlag - Adds a string flag to the command
+func (c *Command) StringFlag(name, description string, variable *string) *Command {
+	c.Flags.StringVar(variable, name, *variable, description)
+	c.flagCount++
+	return c
+}
+
+// LongDescription - Sets the long description for the command
+func (c *Command) LongDescription(Longdescription string) *Command {
+	c.Longdescription = Longdescription
+	return c
+}

cmd/fs.go

@@ -0,0 +1,132 @@
+package cmd
+
+import (
+	"crypto/md5"
+	"fmt"
+	"io"
+	"io/ioutil"
+	"log"
+	"os"
+	"path/filepath"
+)
+
+// FSHelper - Wrapper struct for File System utility commands
+type FSHelper struct {
+}
+
+// NewFSHelper - Returns a new FSHelper
+func NewFSHelper() *FSHelper {
+	result := &FSHelper{}
+	return result
+}
+
+// DirExists - Returns true if the given path resolves to a directory on the filesystem
+func (fs *FSHelper) DirExists(path string) bool {
+	fi, err := os.Lstat(path)
+	if err != nil {
+		return false
+	}
+
+	return fi.Mode().IsDir()
+}
+
+// FileExists returns a boolean value indicating whether
+// the given file exists
+func (fs *FSHelper) FileExists(path string) bool {
+	fi, err := os.Lstat(path)
+	if err != nil {
+		return false
+	}
+
+	return fi.Mode().IsRegular()
+}
+
+// MkDirs creates the given nested directories.
+// Returns error on failure
+func (fs *FSHelper) MkDirs(fullPath string, mode ...os.FileMode) error {
+	var perms os.FileMode
+	perms = 0700
+	if len(mode) == 1 {
+		perms = mode[0]
+	}
+	return os.MkdirAll(fullPath, perms)
+}
+
+// CopyFile from source to target
+func (fs *FSHelper) CopyFile(source, target string) error {
+	s, err := os.Open(source)
+	if err != nil {
+		return err
+	}
+	defer s.Close()
+	d, err := os.Create(target)
+	if err != nil {
+		return err
+	}
+	if _, err := io.Copy(d, s); err != nil {
+		d.Close()
+		return err
+	}
+	return d.Close()
+}
+
+// Cwd returns the current working directory
+// Aborts on Failure
+func (fs *FSHelper) Cwd() string {
+	cwd, err := os.Getwd()
+	if err != nil {
+		log.Fatal("Unable to get working directory!")
+	}
+	return cwd
+}
+
+// GetSubdirs will return a list of FQPs to subdirectories in the given directory
+func (fs *FSHelper) GetSubdirs(dir string) (map[string]string, error) {
+
+	// Read in the directory information
+	fileInfo, err := ioutil.ReadDir(dir)
+	if err != nil {
+		return nil, err
+	}
+
+	// Allocate space for the list
+	subdirs := make(map[string]string)
+
+	// Pull out the directories and store in the map as
+	// map["directoryName"] = "path/to/directoryName"
+	for _, file := range fileInfo {
+		if file.IsDir() {
+			subdirs[file.Name()] = filepath.Join(dir, file.Name())
+		}
+	}
+	return subdirs, nil
+}
+
+// MkDir creates the given directory.
+// Returns error on failure
+func (fs *FSHelper) MkDir(dir string) error {
+	return os.Mkdir(dir, 0700)
+}
+
+// LoadAsString will attempt to load the given file and return
+// its contents as a string
+func (fs *FSHelper) LoadAsString(filename string) (string, error) {
+	bytes, err := ioutil.ReadFile(filename)
+	return string(bytes), err
+}
+
+// FileMD5 returns the md5sum of the given file
+func (fs *FSHelper) FileMD5(filename string) (string, error) {
+	f, err := os.Open(filename)
+	if err != nil {
+		return "", err
+	}
+	defer f.Close()
+
+	h := md5.New()
+	if _, err := io.Copy(h, f); err != nil {
+		return "", err
+	}
+
+	return fmt.Sprintf("%x", h.Sum(nil)), nil
+}

cmd/linux.go

@@ -0,0 +1,79 @@
+package cmd
+
+import (
+	"fmt"
+	"strings"
+)
+
+// LinuxDistribution is of type int
+type LinuxDistribution int
+
+const (
+	// Unknown is the catch-all distro
+	Unknown LinuxDistribution = 0
+	// Ubuntu distribution
+	Ubuntu  LinuxDistribution = 1
+)
+
+// DistroInfo contains all the information relating to a linux distribution
+type DistroInfo struct {
+	Distribution  LinuxDistribution
+	Description   string
+	Release       string
+	Codename      string
+	DistributorID string
+}
+
+// GetLinuxDistroInfo returns information about the running linux distribution
+func GetLinuxDistroInfo() *DistroInfo {
+	result := &DistroInfo{Distribution: Unknown}
+	program := NewProgramHelper()
+	// Does lsb_release exist?
+
+	lsbRelease := program.FindProgram("lsb_release")
+	if lsbRelease != nil {
+		stdout, _, _, err := lsbRelease.Run("-a")
+		if err != nil {
+			return result
+		}
+
+		for _, line := range strings.Split(stdout, "\n") {
+			if strings.Contains(line, ":") {
+				// Iterate lines a
+				details := strings.Split(line, ":")
+				key := strings.TrimSpace(details[0])
+				value := strings.TrimSpace(details[1])
+				switch key {
+				case "Distributor ID":
+					result.DistributorID = value
+					switch value {
+					case "Ubuntu":
+						result.Distribution = Ubuntu
+					}
+				case "Description":
+					result.Description = value
+				case "Release":
+					result.Release = value
+				case "Codename":
+					result.Codename = value
+
+				}
+			}
+		}
+
+	}
+	return result
+}
+
+// DpkgInstalled uses dpkg to see if a package is installed
+func DpkgInstalled(packageName string) (bool, error) {
+	result := false
+	program := NewProgramHelper()
+	dpkg := program.FindProgram("dpkg")
+	if dpkg == nil {
+		return false, fmt.Errorf("cannot check dependencies: dpkg not found")
+	}
+	_, _, exitCode, _ := dpkg.Run("-L", packageName)
+	result = exitCode == 0
+	return result, nil
+}

cmd/log.go

@@ -0,0 +1,82 @@
+package cmd
+
+import (
+	"fmt"
+	"strings"
+
+	"github.com/fatih/color"
+)
+
+// Logger struct
+type Logger struct {
+}
+
+// NewLogger creates a new logger!
+func NewLogger() *Logger {
+	return &Logger{}
+}
+
+// Yellow - Outputs yellow text
+func (l *Logger) Yellow(format string, a ...interface{}) {
+	color.New(color.FgHiYellow).PrintfFunc()(format+"\n", a...)
+}
+
+// Yellowf - Outputs yellow text without the newline
+func (l *Logger) Yellowf(format string, a ...interface{}) {
+	color.New(color.FgHiYellow).PrintfFunc()(format, a...)
+}
+
+// Green - Outputs Green text
+func (l *Logger) Green(format string, a ...interface{}) {
+	color.New(color.FgHiGreen).PrintfFunc()(format+"\n", a...)
+}
+
+// White - Outputs White text
+func (l *Logger) White(format string, a ...interface{}) {
+	color.New(color.FgHiWhite).PrintfFunc()(format+"\n", a...)
+}
+
+// WhiteUnderline - Outputs White text with underline
+func (l *Logger) WhiteUnderline(format string, a ...interface{}) {
+	l.White(format, a...)
+	l.White(l.underline(format))
+}
+
+// YellowUnderline - Outputs Yellow text with underline
+func (l *Logger) YellowUnderline(format string, a ...interface{}) {
+	l.Yellow(format, a...)
+	l.Yellow(l.underline(format))
+}
+
+// underline returns a string of a line, the length of the message given to it
+func (l *Logger) underline(message string) string {
+	return strings.Repeat("-", len(message))
+}
+
+// Red - Outputs Red text
+func (l *Logger) Red(format string, a ...interface{}) {
+	color.New(color.FgHiRed).PrintfFunc()(format+"\n", a...)
+}
+
+// Error - Outputs an Error message
+func (l *Logger) Error(format string, a ...interface{}) {
+	color.New(color.FgHiRed).PrintfFunc()("Error: "+format+"\n", a...)
+}
+
+// PrintBanner prints the Wails banner before running commands
+func (l *Logger) PrintBanner() error {
+	banner1 := ` _       __      _ __    
+| |     / /___ _(_) /____
+| | /| / / __ ` + "`" + `/ / / ___/
+| |/ |/ / /_/ / / (__  )  `
+	banner2 := `|__/|__/\__,_/_/_/____/   `
+
+	l.Yellowf(banner1)
+	l.Red(Version)
+	l.Yellowf(banner2)
+	l.Green("https://wails.app")
+	l.White("The lightweight framework for web-like apps")
+	fmt.Println()
+
+	return nil
+}

cmd/prerequisites.go

@@ -0,0 +1,110 @@
+package cmd
+
+import (
+	"fmt"
+	"runtime"
+)
+
+// Prerequisite defines a Prerequisite!
+type Prerequisite struct {
+	Name string
+	Help string
+	Path string
+}
+
+func newPrerequisite(name, help string) *Prerequisite {
+	return &Prerequisite{Name: name, Help: help}
+}
+
+// Prerequisites is a list of things required to use Wails
+type Prerequisites []*Prerequisite
+
+// Add given prereq object to list
+func (p *Prerequisites) Add(prereq *Prerequisite) {
+	*p = append(*p, prereq)
+}
+
+// GetRequiredPrograms returns a list of programs required for the platform
+func GetRequiredPrograms() (*Prerequisites, error) {
+	switch runtime.GOOS {
+	case "darwin":
+		return getRequiredProgramsOSX(), nil
+	case "linux":
+		return getRequiredProgramsLinux(), nil
+	case "windows":
+		return getRequiredProgramsWindows(), nil
+	default:
+		return nil, fmt.Errorf("platform '%s' not supported at this time", runtime.GOOS)
+	}
+}
+
+func getRequiredProgramsOSX() *Prerequisites {
+	result := &Prerequisites{}
+	result.Add(newPrerequisite("clang", "Please install with `xcode-select --install` and try again"))
+	result.Add(newPrerequisite("npm", "Please install from https://nodejs.org/en/download/ and try again"))
+	return result
+}
+
+func getRequiredProgramsLinux() *Prerequisites {
+	result := &Prerequisites{}
+	distroInfo := GetLinuxDistroInfo()
+	switch distroInfo.Distribution {
+	case Ubuntu:
+		result.Add(newPrerequisite("gcc", "Please install with `sudo apt install build-essentials` and try again"))
+		result.Add(newPrerequisite("pkg-config", "Please install with `sudo apt install pkg-config` and try again"))
+		result.Add(newPrerequisite("npm", "Please install from https://nodejs.org/en/download/ and try again"))
+
+	default:
+		result.Add(newPrerequisite("gcc", "Please install with your system package manager and try again"))
+		result.Add(newPrerequisite("pkg-config", "Please install with your system package manager and try again"))
+		result.Add(newPrerequisite("npm", "Please install from https://nodejs.org/en/download/ and try again"))
+
+	}
+	return result
+}
+
+// TODO: Test this on Windows
+func getRequiredProgramsWindows() *Prerequisites {
+	result := &Prerequisites{}
+	result.Add(newPrerequisite("gcc", "Please install gcc from here and try again: http://tdm-gcc.tdragon.net/download. You will need to add the bin directory to your path, EG: C:\\TDM-GCC-64\\bin\\"))
+	result.Add(newPrerequisite("npm", "Please install node/npm from here and try again: https://nodejs.org/en/download/"))
+	return result
+}
+
+// GetRequiredLibraries returns a list of libraries (packages) required for the platform
+func GetRequiredLibraries() (*Prerequisites, error) {
+	switch runtime.GOOS {
+	case "darwin":
+		return getRequiredLibrariesOSX()
+	case "linux":
+		return getRequiredLibrariesLinux()
+	case "windows":
+		return getRequiredLibrariesWindows()
+	default:
+		return nil, fmt.Errorf("platform '%s' not supported at this time", runtime.GOOS)
+	}
+}
+
+func getRequiredLibrariesOSX() (*Prerequisites, error) {
+	result := &Prerequisites{}
+	return result, nil
+}
+
+func getRequiredLibrariesLinux() (*Prerequisites, error) {
+	result := &Prerequisites{}
+	distroInfo := GetLinuxDistroInfo()
+	switch distroInfo.Distribution {
+	case Ubuntu:
+		result.Add(newPrerequisite("libgtk-3-dev", "Please install with `sudo apt install libgtk-3-dev` and try again"))
+		result.Add(newPrerequisite("libwebkit2gtk-4.0-dev", "Please install with `sudo apt install libwebkit2gtk-4.0-dev` and try again"))
+	default:
+		result.Add(newPrerequisite("libgtk-3-dev", "Please install with your system package manager and try again"))
+		result.Add(newPrerequisite("libwebkit2gtk-4.0-dev", "Please install with your system package manager and try again"))
+	}
+	return result, nil
+}
+
+func getRequiredLibrariesWindows() (*Prerequisites, error) {
+	result := &Prerequisites{}
+	return result, nil
+}

cmd/program.go

@@ -0,0 +1,85 @@
+package cmd
+
+import (
+	"bytes"
+	"os/exec"
+	"path/filepath"
+	"syscall"
+)
+
+// ProgramHelper - Utility functions around installed applications
+type ProgramHelper struct{}
+
+// NewProgramHelper - Creates a new ProgramHelper
+func NewProgramHelper() *ProgramHelper {
+	return &ProgramHelper{}
+}
+
+// IsInstalled tries to determine if the given binary name is installed
+func (p *ProgramHelper) IsInstalled(programName string) bool {
+	_, err := exec.LookPath(programName)
+	return err == nil
+}
+
+// Program - A struct to define an installed application/binary
+type Program struct {
+	Name string `json:"name"`
+	Path string `json:"path"`
+}
+
+// FindProgram attempts to find the given program on the system.FindProgram
+// Returns a struct with the name and path to the program
+func (p *ProgramHelper) FindProgram(programName string) *Program {
+	path, err := exec.LookPath(programName)
+	if err != nil {
+		return nil
+	}
+	path, err = filepath.Abs(path)
+	if err != nil {
+		return nil
+	}
+	return &Program{
+		Name: programName,
+		Path: path,
+	}
+}
+
+// GetFullPathToBinary returns the full path the the current binary
+func (p *Program) GetFullPathToBinary() (string, error) {
+	return filepath.Abs(p.Path)
+}
+
+// Run will execute the program with the given parameters
+// Returns stdout + stderr as strings and an error if one occured
+func (p *Program) Run(vars ...string) (stdout, stderr string, exitCode int, err error) {
+	command, err := p.GetFullPathToBinary()
+	if err != nil {
+		return "", "", 1, err
+	}
+	cmd := exec.Command(command, vars...)
+	var stdo, stde bytes.Buffer
+	cmd.Stdout = &stdo
+	cmd.Stderr = &stde
+	err = cmd.Run()
+	stdout = string(stdo.Bytes())
+	stderr = string(stde.Bytes())
+
+	// https://stackoverflow.com/questions/10385551/get-exit-code-go
+	if err != nil {
+		// try to get the exit code
+		if exitError, ok := err.(*exec.ExitError); ok {
+			ws := exitError.Sys().(syscall.WaitStatus)
+			exitCode = ws.ExitStatus()
+		} else {
+			exitCode = 1
+			if stderr == "" {
+				stderr = err.Error()
+			}
+		}
+	} else {
+		// success, exitCode should be 0 if go is ok
+		ws := cmd.ProcessState.Sys().(syscall.WaitStatus)
+		exitCode = ws.ExitStatus()
+	}
+	return
+}

cmd/setup.go

@@ -0,0 +1 @@
+package cmd

cmd/system.go

@@ -0,0 +1,210 @@
+package cmd
+
+import (
+	"encoding/json"
+	"fmt"
+	"io/ioutil"
+	"log"
+	"path/filepath"
+	"strconv"
+	"time"
+
+	"github.com/AlecAivazis/survey"
+	homedir "github.com/mitchellh/go-homedir"
+)
+
+// SystemHelper - Defines everything related to the system
+type SystemHelper struct {
+	log               *Logger
+	fs                *FSHelper
+	configFilename    string
+	homeDir           string
+	wailsSystemDir    string
+	wailsSystemConfig string
+}
+
+// NewSystemHelper - Creates a new System Helper
+func NewSystemHelper() *SystemHelper {
+	result := &SystemHelper{
+		fs:             NewFSHelper(),
+		log:            NewLogger(),
+		configFilename: "wails.json",
+	}
+	result.setSystemDirs()
+	return result
+}
+
+// Internal
+// setSystemDirs calculates the system directories it is interested in
+func (s *SystemHelper) setSystemDirs() {
+	var err error
+	s.homeDir, err = homedir.Dir()
+	if err != nil {
+		log.Fatal("Cannot find home directory! Please file a bug report!")
+	}
+	// TODO: A better config system
+	s.wailsSystemDir = filepath.Join(s.homeDir, ".wails")
+	s.wailsSystemConfig = filepath.Join(s.wailsSystemDir, s.configFilename)
+}
+
+// ConfigFileExists - Returns true if it does!
+func (s *SystemHelper) ConfigFileExists() bool {
+	return s.fs.FileExists(s.wailsSystemConfig)
+}
+
+// SystemDirExists - Returns true if it does!
+func (s *SystemHelper) systemDirExists() bool {
+	return s.fs.DirExists(s.wailsSystemDir)
+}
+
+// LoadConfig attempts to load the Wails system config
+func (s *SystemHelper) LoadConfig() (*SystemConfig, error) {
+	return NewSystemConfig(s.wailsSystemConfig)
+}
+
+// ConfigFileIsValid checks if the config file is valid
+func (s *SystemHelper) ConfigFileIsValid() bool {
+	_, err := NewSystemConfig(s.wailsSystemConfig)
+	return err == nil
+}
+
+// BackupConfig attempts to backup the system config file
+func (s *SystemHelper) BackupConfig() (string, error) {
+	now := strconv.FormatInt(time.Now().UTC().UnixNano(), 10)
+	backupFilename := s.wailsSystemConfig + "." + now
+	err := s.fs.CopyFile(s.wailsSystemConfig, backupFilename)
+	if err != nil {
+		return "", err
+	}
+	return backupFilename, nil
+}
+
+func (s *SystemHelper) setup() error {
+
+	// Answers. We all need them.
+	answers := &SystemConfig{}
+
+	// Try to load current values - ignore errors
+	config, err := s.LoadConfig()
+	defaultName := ""
+	defaultEmail := ""
+	if config != nil {
+		defaultName = config.Name
+		defaultEmail = config.Email
+	}
+	// Questions
+	var simpleQs = []*survey.Question{
+		{
+			Name: "Name",
+			Prompt: &survey.Input{
+				Message: "What is your name:",
+				Default: defaultName,
+			},
+			Validate: survey.Required,
+		},
+		{
+			Name: "Email",
+			Prompt: &survey.Input{
+				Message: "What is your email address:",
+				Default: defaultEmail,
+			},
+			Validate: survey.Required,
+		},
+	}
+
+	// ask the questions
+	err = survey.Ask(simpleQs, answers)
+	if err != nil {
+		return err
+	}
+
+	// Create the directory
+	err = s.fs.MkDirs(s.wailsSystemDir)
+	if err != nil {
+		return err
+	}
+
+	fmt.Println()
+	s.log.White("Wails config saved to: " + s.wailsSystemConfig)
+	s.log.White("Feel free to customise these settings.")
+	fmt.Println()
+
+	return answers.Save(s.wailsSystemConfig)
+}
+
+const introText = `
+Wails is a lightweight framework for creating web-like desktop apps in Go. 
+I'll need to ask you a few questions so I can fill in your project templates and then I will try and see if you have the correct dependencies installed. If you don't have the right tools installed, I'll try and suggest how to install them.
+`
+
+// Initialise attempts to set up the Wails system.
+// An error is returns if there is a problem
+func (s *SystemHelper) Initialise() error {
+
+	// System dir doesn't exist
+	if !s.systemDirExists() {
+		s.log.Green("Welcome to Wails!")
+		s.log.Green(introText)
+		return s.setup()
+	}
+
+	// Config doesn't exist
+	if !s.ConfigFileExists() {
+		s.log.Green("Looks like the system config is missing.")
+		s.log.Green("To get you back on track, I'll need to ask you a few things...")
+		return s.setup()
+	}
+
+	// Config exists but isn't valid.
+	if !s.ConfigFileIsValid() {
+		s.log.Green("Looks like the system config got corrupted.")
+		backupFile, err := s.BackupConfig()
+		if err != nil {
+			s.log.Green("I tried to backup your config file but got this error: %s", err.Error())
+		} else {
+			s.log.Green("Just in case you needed it, I backed up your config file here: %s", backupFile)
+		}
+		s.log.Green("To get you back on track, I'll need to ask you a few things...")
+		return s.setup()
+	}
+
+	return s.setup()
+}
+
+// SystemConfig - Defines system wode configuration data
+type SystemConfig struct {
+	Name  string `json:"name"`
+	Email string `json:"email"`
+}
+
+// NewSystemConfig - Creates a new SystemConfig helper object
+func NewSystemConfig(filename string) (*SystemConfig, error) {
+	result := &SystemConfig{}
+	err := result.load(filename)
+	return result, err
+}
+
+// Save - Saves the system config to the given filename
+func (sc *SystemConfig) Save(filename string) error {
+	// Convert config to JSON string
+	theJSON, err := json.MarshalIndent(sc, "", "  ")
+	if err != nil {
+		return err
+	}
+
+	// Write it out to the config file
+	return ioutil.WriteFile(filename, theJSON, 0644)
+}
+
+func (sc *SystemConfig) load(filename string) error {
+	configData, err := ioutil.ReadFile(filename)
+	if err != nil {
+		return err
+	}
+	// Load and unmarshall!
+	err = json.Unmarshal(configData, &sc)
+	if err != nil {
+		return err
+	}
+	return nil
+}

cmd/version.go

@@ -0,0 +1,5 @@
+package cmd
+
+// Version - Wails version
+// ...oO(There must be a better way)
+const Version = "v0.5 Alpha"

cmd/wails/0_setup.go

@@ -0,0 +1,101 @@
+package main
+
+import (
+	"fmt"
+	"runtime"
+
+	"github.com/leaanthony/spinner"
+	"github.com/wailsapp/wails/cmd"
+)
+
+func init() {
+
+	commandDescription := `Sets up your local environment to develop Wails apps.`
+
+	setupCommand := app.Command("setup", "Setup the Wails environment").
+		LongDescription(commandDescription)
+
+	app.DefaultCommand(setupCommand)
+
+	setupCommand.Action(func() error {
+
+		system := cmd.NewSystemHelper()
+		err := system.Initialise()
+		if err != nil {
+			return err
+		}
+
+		var successMessage = `Ready for take off!
+Create your first project by running 'wails init'.`
+		if runtime.GOOS != "windows" {
+			successMessage = "🚀 " + successMessage
+		}
+		switch runtime.GOOS {
+		case "darwin":
+			logger.Yellow("Detected Platform: OSX")
+		case "windows":
+			logger.Yellow("Detected Platform: Windows")
+		case "linux":
+			logger.Yellow("Detected Platform: Linux")
+		default:
+			return fmt.Errorf("Platform %s is currently not supported", runtime.GOOS)
+		}
+
+		logger.Yellow("Checking for prerequisites...")
+		// Check we have a cgo capable environment
+
+		requiredPrograms, err := cmd.GetRequiredPrograms()
+		if err != nil {
+			return err
+		}
+		errors := false
+		spinner := spinner.New()
+		programHelper := cmd.NewProgramHelper()
+		for _, program := range *requiredPrograms {
+			spinner.Start("Looking for program '%s'", program.Name)
+			bin := programHelper.FindProgram(program.Name)
+			if bin == nil {
+				errors = true
+				spinner.Errorf("Program '%s' not found. %s", program.Name, program.Help)
+			} else {
+				spinner.Successf("Program '%s' found: %s", program.Name, bin.Path)
+			}
+		}
+
+		// Linux has library deps
+		if runtime.GOOS == "linux" {
+			// Check library prerequisites
+			requiredLibraries, err := cmd.GetRequiredLibraries()
+			if err != nil {
+				return err
+			}
+			distroInfo := cmd.GetLinuxDistroInfo()
+			for _, library := range *requiredLibraries {
+				spinner.Start()
+				switch distroInfo.Distribution {
+				case cmd.Ubuntu:
+					installed, err := cmd.DpkgInstalled(library.Name)
+					if err != nil {
+						return err
+					}
+					if !installed {
+						errors = true
+						spinner.Errorf("Library '%s' not found. %s", library.Name, library.Help)
+					} else {
+						spinner.Successf("Library '%s' installed.", library.Name)
+					}
+				default:
+					return fmt.Errorf("unable to check libraries on distribution '%s'. Please ensure that the '%s' equivalent is installed", distroInfo.DistributorID, library.Name)
+				}
+			}
+		}
+
+		logger.White("")
+
+		if !errors {
+			logger.Yellow(successMessage)
+		}
+
+		return err
+	})
+}

cmd/wails/main.go

@@ -0,0 +1,26 @@
+package main
+
+import (
+	"github.com/wailsapp/wails/cmd"
+)
+
+// Create Logger
+var logger = cmd.NewLogger()
+
+// Create main app
+var app = cmd.NewCli("wails", "A cli tool for building Wails applications.")
+
+// Prints the cli banner
+func printBanner(app *cmd.Cli) error {
+	logger.PrintBanner()
+	return nil
+}
+
+// Main!
+func main() {
+	app.PreRun(printBanner)
+	err := app.Run()
+	if err != nil {
+		logger.Error(err.Error())
+	}
+}

go.mod

@@ -0,0 +1,15 @@
+module github.com/wailsapp/wails
+
+require (
+	github.com/AlecAivazis/survey v1.7.1
+	github.com/fatih/color v1.7.0
+	github.com/kballard/go-shellquote v0.0.0-20180428030007-95032a82bc51 // indirect
+	github.com/leaanthony/spinner v0.4.0
+	github.com/leaanthony/synx v0.0.0-20180923230033-60efbd9984b0 // indirect
+	github.com/leaanthony/wincursor v0.0.0-20180705115120-056510f32d15 // indirect
+	github.com/mattn/go-colorable v0.0.9 // indirect
+	github.com/mattn/go-isatty v0.0.4 // indirect
+	github.com/mgutz/ansi v0.0.0-20170206155736-9520e82c474b // indirect
+	github.com/mitchellh/go-homedir v1.0.0
+	gopkg.in/AlecAivazis/survey.v1 v1.7.1 // indirect
+)

go.sum

@@ -0,0 +1,25 @@
+github.com/AlecAivazis/survey v1.7.1 h1:a84v5MG2296rBkTP0e+dd4l7NxFQ69v4jzMpErkjVxc=
+github.com/AlecAivazis/survey v1.7.1/go.mod h1:MVECab6WqEH1aXhj8nKIwF7HEAJAj2bhhGiSjNy3wII=
+github.com/fatih/color v1.7.0 h1:DkWD4oS2D8LGGgTQ6IvwJJXSL5Vp2ffcQg58nFV38Ys=
+github.com/fatih/color v1.7.0/go.mod h1:Zm6kSWBoL9eyXnKyktHP6abPY2pDugNf5KwzbycvMj4=
+github.com/kballard/go-shellquote v0.0.0-20180428030007-95032a82bc51 h1:Z9n2FFNUXsshfwJMBgNA0RU6/i7WVaAegv3PtuIHPMs=
+github.com/kballard/go-shellquote v0.0.0-20180428030007-95032a82bc51/go.mod h1:CzGEWj7cYgsdH8dAjBGEr58BoE7ScuLd+fwFZ44+/x8=
+github.com/leaanthony/spinner v0.4.0 h1:y/7FqQqqObRKYI+33bg9DGhHIY7cQHicm+Vz0Uda0Ik=
+github.com/leaanthony/spinner v0.4.0/go.mod h1:2Mmv+8Brcw3NwPT1DdOLmW6+zWpSamDDFFsUvVHo2cc=
+github.com/leaanthony/spinner v0.5.0 h1:OJKn+0KP6ilHxwCEOv5Lo0wPM4PgWZWLJTeUprGJK0g=
+github.com/leaanthony/spinner v0.5.0/go.mod h1:2Mmv+8Brcw3NwPT1DdOLmW6+zWpSamDDFFsUvVHo2cc=
+github.com/leaanthony/synx v0.0.0-20180923230033-60efbd9984b0 h1:1bGojw4YacLY5bqQalojiQ7mSfQbe4WIWCEgPZagowU=
+github.com/leaanthony/synx v0.0.0-20180923230033-60efbd9984b0/go.mod h1:Iz7eybeeG8bdq640iR+CwYb8p+9EOsgMWghkSRyZcqs=
+github.com/leaanthony/wincursor v0.0.0-20180705115120-056510f32d15 h1:166LIty6ldcyOc7tbgfu5smsGATvEo0JZV6bnbzyEc4=
+github.com/leaanthony/wincursor v0.0.0-20180705115120-056510f32d15/go.mod h1:7TVwwrzSH/2Y9gLOGH+VhA+bZhoWXBRgbGNTMk+yimE=
+github.com/mattn/go-colorable v0.0.9 h1:UVL0vNpWh04HeJXV0KLcaT7r06gOH2l4OW6ddYRUIY4=
+github.com/mattn/go-colorable v0.0.9/go.mod h1:9vuHe8Xs5qXnSaW/c/ABM9alt+Vo+STaOChaDxuIBZU=
+github.com/mattn/go-isatty v0.0.4 h1:bnP0vzxcAdeI1zdubAl5PjU6zsERjGZb7raWodagDYs=
+github.com/mattn/go-isatty v0.0.4/go.mod h1:M+lRXTBqGeGNdLjl/ufCoiOlB5xdOkqRJdNxMWT7Zi4=
+github.com/mgutz/ansi v0.0.0-20170206155736-9520e82c474b h1:j7+1HpAFS1zy5+Q4qx1fWh90gTKwiN4QCGoY9TWyyO4=
+github.com/mgutz/ansi v0.0.0-20170206155736-9520e82c474b/go.mod h1:01TrycV0kFyexm33Z7vhZRXopbI8J3TDReVlkTgMUxE=
+github.com/mitchellh/go-homedir v1.0.0 h1:vKb8ShqSby24Yrqr/yDYkuFz8d0WUjys40rvnGC8aR0=
+github.com/mitchellh/go-homedir v1.0.0/go.mod h1:SfyaCUpYCn1Vlf4IUYiD9fPX4A5wJrkLzIz1N1q0pr0=
+github.com/wailsapp/wails v0.0.0-20181215232634-5de8efff325d h1:lk91T4sKD98eGcaz/xC6ER+3o9Kaun7Mk8e/cNZOPMc=
+gopkg.in/AlecAivazis/survey.v1 v1.7.1 h1:mzQIVyOPSXJaQWi1m6AFCjrCEPIwQBSOn48Ri8ZpzAg=
+gopkg.in/AlecAivazis/survey.v1 v1.7.1/go.mod h1:2Ehl7OqkBl3Xb8VmC4oFW2bItAhnUfzIjrOzwRxCrOU=