added backend calls skeleton

client/backend.go

@@ -1,8 +1,35 @@
 package client
 
-import "github.com/sqshq/sampler/storage"
+import (
+	"github.com/sqshq/sampler/metadata"
+	"net/http"
+)
 
-// TODO
+const (
-func loadLicense(key string) *storage.License {
+	backendUrl             = "http://localhost:8080/api/v1"
-	return nil
+	registrationPath       = "/registration"
+	reportInstallationPath = "/report/installation"
+	reportCrashPath        = "repost/crash"
+)
+
+type BackendClient struct {
+	client http.Client
+}
+
+func NewBackendClient() *BackendClient {
+	return &BackendClient{
+		client: http.Client{},
+	}
+}
+
+func (c *BackendClient) ReportInstallation(statistics *metadata.Statistics) {
+	// TODO
+}
+
+func (c *BackendClient) ReportCrash() {
+	// TODO
+}
+
+func (c *BackendClient) Register(key string) {
+	// TODO
 }

component/layout/layout.go

@@ -41,8 +41,9 @@ const (
 	statusbarHeight = 1
 )
 
-func NewLayout(width, height int, statusline *component.StatusBar, menu *component.Menu, intro *component.Intro) *Layout {
+func NewLayout(statusline *component.StatusBar, menu *component.Menu, intro *component.Intro) *Layout {
 
+	width, height := ui.TerminalDimensions()
 	block := *ui.NewBlock()
 	block.SetRect(0, 0, width, height)
 	intro.SetRect(0, 0, width, height)

component/statusbar.go

@@ -4,7 +4,7 @@ import (
 	"fmt"
 	ui "github.com/gizak/termui/v3"
 	"github.com/sqshq/sampler/console"
-	"github.com/sqshq/sampler/storage"
+	"github.com/sqshq/sampler/metadata"
 	"image"
 )
 
@@ -18,7 +18,7 @@ type StatusBar struct {
 	text        string
 }
 
-func NewStatusLine(configFileName string, palette console.Palette, license *storage.License) *StatusBar {
+func NewStatusLine(configFileName string, palette console.Palette, license *metadata.License) *StatusBar {
 	block := *ui.NewBlock()
 	block.Border = false
 

config/config.go

@@ -21,20 +21,34 @@ type Config struct {
 	AsciiBoxes []AsciiBoxConfig  `yaml:"asciiboxes,omitempty"`
 }
 
-func LoadConfig() (Config, Options) {
+func LoadConfig() (*Config, Options) {
 
 	var opt Options
 	_, err := flags.Parse(&opt)
 
 	if err != nil {
+		panic(err)
+	}
+
+	if opt.Version == true {
+		println(console.AppVersion)
 		os.Exit(0)
 	}
 
+	if opt.ConfigFile == nil && opt.License == nil {
+		println("Please specify config file using --config flag. Example: sampler --config example.yml")
+		os.Exit(0)
+	}
+
+	if opt.License != nil {
+		return nil, opt
+	}
+
 	cfg := readFile(opt.ConfigFile)
 	cfg.validate()
 	cfg.setDefaults()
 
-	return *cfg, opt
+	return cfg, opt
 }
 
 func Update(settings []ComponentSettings, options Options) {
@@ -91,11 +105,11 @@ func (c *Config) findComponent(componentType ComponentType, componentTitle strin
 		"Failed to find component type %v with title %v", componentType, componentTitle))
 }
 
-func readFile(location string) *Config {
+func readFile(location *string) *Config {
 
-	yamlFile, err := ioutil.ReadFile(location)
+	yamlFile, err := ioutil.ReadFile(*location)
 	if err != nil {
-		log.Fatalf("Failed to read config file: %s", location)
+		log.Fatalf("Failed to read config file: %s", *location)
 	}
 
 	cfg := new(Config)
@@ -108,13 +122,12 @@ func readFile(location string) *Config {
 	return cfg
 }
 
-func saveFile(config *Config, fileName string) {
+func saveFile(config *Config, fileName *string) {
 	file, err := yaml.Marshal(config)
 	if err != nil {
 		log.Fatalf("Failed to marshal config file: %v", err)
 	}
-
+	err = ioutil.WriteFile(*fileName, file, os.ModePerm)
-	err = ioutil.WriteFile(fileName, file, os.ModePerm)
 	if err != nil {
 		log.Fatalf("Failed to save config file: %v", err)
 	}

config/options.go

@@ -1,7 +1,8 @@
 package config
 
 type Options struct {
-	ConfigFile string   `short:"c" long:"config" required:"true" description:"path to YAML config file"`
+	ConfigFile  *string  `short:"c" long:"config" required:"false" description:"set path to YAML config file"`
-	Variables  []string `short:"v" long:"variable" required:"false" description:"specify name=value variable to use in script placeholder as $name. This flag takes precedence over the same name variables, specified in config yml" long-description:"one or more variables can be specified as flags, in order to replace repeated patterns in the scripts, which can be replaced with {$variable-name} placeholder" `
+	License     *string  `short:"l" long:"license" required:"false" description:"provide license key. visit www.sampler.dev for details"`
-	License    []string `short:"l" long:"license" required:"false" description:"provide license key. visit www.sampler.dev for details"`
+	Environment []string `short:"e" long:"env" required:"false" description:"specify name=value variable to use in script placeholder as $name. This flag takes precedence over the same name variables, specified in config yml"`
+	Version     bool     `short:"v" long:"version" required:"false" description:"print version"`
 }

data/sampler.go

@@ -23,7 +23,7 @@ func NewSampler(consumer *Consumer, items []*Item, triggers []*Trigger, options
 		items,
 		triggers,
 		make(chan *Sample),
-		mergeVariables(fileVariables, options.Variables),
+		mergeVariables(fileVariables, options.Environment),
 	}
 
 	go func() {

data/trigger.go

@@ -120,7 +120,7 @@ func (t *Trigger) runScript(script, label string, data Values) ([]byte, error) {
 	cmd := exec.Command("sh", "-c", script)
 	cmd.Env = os.Environ()
 
-	for _, variable := range t.options.Variables {
+	for _, variable := range t.options.Environment {
 		cmd.Env = append(cmd.Env, variable)
 	}
 

main.go

@@ -3,6 +3,7 @@ package main
 import (
 	ui "github.com/gizak/termui/v3"
 	"github.com/sqshq/sampler/asset"
+	"github.com/sqshq/sampler/client"
 	"github.com/sqshq/sampler/component"
 	"github.com/sqshq/sampler/component/asciibox"
 	"github.com/sqshq/sampler/component/barchart"
@@ -15,7 +16,7 @@ import (
 	"github.com/sqshq/sampler/console"
 	"github.com/sqshq/sampler/data"
 	"github.com/sqshq/sampler/event"
-	"github.com/sqshq/sampler/storage"
+	"github.com/sqshq/sampler/metadata"
 	"time"
 )
 
@@ -45,54 +46,58 @@ func main() {
 	player := asset.NewAudioPlayer()
 	defer player.Close()
 
+	license := metadata.GetLicense()
+	statistics := metadata.PersistStatistics(cfg)
+
+	if opt.License != nil {
+		// validate license
+		// save to storage on success
+		// exit with info
+		return
+	}
+
 	palette := console.GetPalette(*cfg.Theme)
-	width, height := ui.TerminalDimensions()
+	lout := layout.NewLayout(component.NewStatusLine(*opt.ConfigFile, palette, license), component.NewMenu(palette), component.NewIntro(palette))
-
+	bc := client.NewBackendClient()
-	license := storage.GetLicense()
-	_ = storage.UpdateStatistics(cfg, width, height)
-
-	lout := layout.NewLayout(width, height, component.NewStatusLine(opt.ConfigFile, palette, license), component.NewMenu(palette), component.NewIntro(palette))
-	starter := &Starter{lout, player, opt, cfg}
 
 	if license == nil {
 		lout.RunIntro()
-		storage.InitLicense()
+		metadata.InitLicense()
+		bc.ReportInstallation(statistics)
 	} else if !license.Purchased /* && random */ {
 		// TODO lout.showNagWindow() with timeout and OK button
-		// TODO verify license
-		// TODO send stats
 	}
 
-	for _, c := range cfg.RunCharts {
+	starter := &Starter{lout, player, opt, *cfg}
-		cpt := runchart.NewRunChart(c, palette)
+	startComponents(starter, cfg, palette)
-		starter.start(cpt, cpt.Consumer, c.ComponentConfig, c.Items, c.Triggers)
-	}
-
-	for _, c := range cfg.SparkLines {
-		cpt := sparkline.NewSparkLine(c, palette)
-		starter.start(cpt, cpt.Consumer, c.ComponentConfig, []config.Item{c.Item}, c.Triggers)
-	}
-
-	for _, c := range cfg.BarCharts {
-		cpt := barchart.NewBarChart(c, palette)
-		starter.start(cpt, cpt.Consumer, c.ComponentConfig, c.Items, c.Triggers)
-	}
-
-	for _, c := range cfg.Gauges {
-		cpt := gauge.NewGauge(c, palette)
-		starter.start(cpt, cpt.Consumer, c.ComponentConfig, []config.Item{c.Cur, c.Min, c.Max}, c.Triggers)
-	}
-
-	for _, c := range cfg.AsciiBoxes {
-		cpt := asciibox.NewAsciiBox(c, palette)
-		starter.start(cpt, cpt.Consumer, c.ComponentConfig, []config.Item{c.Item}, c.Triggers)
-	}
-
-	for _, c := range cfg.TextBoxes {
-		cpt := textbox.NewTextBox(c, palette)
-		starter.start(cpt, cpt.Consumer, c.ComponentConfig, []config.Item{c.Item}, c.Triggers)
-	}
 
 	handler := event.NewHandler(lout, opt)
 	handler.HandleEvents()
 }
+
+func startComponents(starter *Starter, cfg *config.Config, palette console.Palette) {
+	for _, c := range cfg.RunCharts {
+		cpt := runchart.NewRunChart(c, palette)
+		starter.start(cpt, cpt.Consumer, c.ComponentConfig, c.Items, c.Triggers)
+	}
+	for _, c := range cfg.SparkLines {
+		cpt := sparkline.NewSparkLine(c, palette)
+		starter.start(cpt, cpt.Consumer, c.ComponentConfig, []config.Item{c.Item}, c.Triggers)
+	}
+	for _, c := range cfg.BarCharts {
+		cpt := barchart.NewBarChart(c, palette)
+		starter.start(cpt, cpt.Consumer, c.ComponentConfig, c.Items, c.Triggers)
+	}
+	for _, c := range cfg.Gauges {
+		cpt := gauge.NewGauge(c, palette)
+		starter.start(cpt, cpt.Consumer, c.ComponentConfig, []config.Item{c.Cur, c.Min, c.Max}, c.Triggers)
+	}
+	for _, c := range cfg.AsciiBoxes {
+		cpt := asciibox.NewAsciiBox(c, palette)
+		starter.start(cpt, cpt.Consumer, c.ComponentConfig, []config.Item{c.Item}, c.Triggers)
+	}
+	for _, c := range cfg.TextBoxes {
+		cpt := textbox.NewTextBox(c, palette)
+		starter.start(cpt, cpt.Consumer, c.ComponentConfig, []config.Item{c.Item}, c.Triggers)
+	}
+}

metadata/license.go

@@ -1,4 +1,4 @@
-package storage
+package metadata
 
 import (
 	"gopkg.in/yaml.v2"

metadata/statistics.go

@@ -1,6 +1,7 @@
-package storage
+package metadata
 
 import (
+	ui "github.com/gizak/termui/v3"
 	"github.com/sqshq/sampler/config"
 	"github.com/sqshq/sampler/console"
 	"gopkg.in/yaml.v2"
@@ -19,27 +20,34 @@ type Statistics struct {
 
 const statisticsFileName = "statistics.yml"
 
-func UpdateStatistics(config config.Config, width int, height int) *Statistics {
+func PersistStatistics(config *config.Config) *Statistics {
 
 	statistics := new(Statistics)
+	w, h := ui.TerminalDimensions()
 
 	if fileExists(statisticsFileName) {
 		file := readStorageFile(getPlatformStoragePath(statisticsFileName))
 		err := yaml.Unmarshal(file, statistics)
+
 		if err != nil {
 			log.Fatalf("Failed to read statistics file: %v", err)
 		}
-		statistics.ComponentsCount = countComponentsPerType(config)
+
-		statistics.WindowWidth = width
+		if config != nil {
-		statistics.WindowWidth = height
+			statistics.ComponentsCount = countComponentsPerType(config)
+		}
+
+		statistics.WindowWidth = w
+		statistics.WindowWidth = h
 		statistics.LaunchCount += 1
+
 	} else {
 		statistics = &Statistics{
 			Version:         console.AppVersion,
 			OS:              runtime.GOOS,
 			LaunchCount:     1,
-			WindowWidth:     width,
+			WindowWidth:     w,
-			WindowHeight:    height,
+			WindowHeight:    h,
 			ComponentsCount: countComponentsPerType(config),
 		}
 	}
@@ -54,13 +62,20 @@ func UpdateStatistics(config config.Config, width int, height int) *Statistics {
 	return statistics
 }
 
-func countComponentsPerType(config config.Config) map[string]int {
+func countComponentsPerType(config *config.Config) map[string]int {
+
 	m := make(map[string]int)
+
+	if config == nil {
+		return m
+	}
+
 	m["runcharts"] = len(config.RunCharts)
 	m["sparkLines"] = len(config.SparkLines)
 	m["barcharts"] = len(config.BarCharts)
 	m["gauges"] = len(config.Gauges)
 	m["asciiboxes"] = len(config.AsciiBoxes)
 	m["textboxes"] = len(config.TextBoxes)
+
 	return m
 }

metadata/storage.go

@@ -1,4 +1,4 @@
-package storage
+package metadata
 
 import (
 	"io/ioutil"