feat(cmd): check for a new version

Makefile

@@ -3,10 +3,8 @@
 # Project variables.
 PROJECT_NAME = starport
 DATE := $(shell date '+%Y-%m-%dT%H:%M:%S')
-VERSION = development
 HEAD = $(shell git rev-parse HEAD)
-LD_FLAGS = -X github.com/tendermint/starport/starport/internal/version.Version='$(VERSION)' \
-	-X github.com/tendermint/starport/starport/internal/version.Head='$(HEAD)' \
+LD_FLAGS = -X github.com/tendermint/starport/starport/internal/version.Head='$(HEAD)' \
 	-X github.com/tendermint/starport/starport/internal/version.Date='$(DATE)'
 BUILD_FLAGS = -mod=readonly -ldflags='$(LD_FLAGS)'
 BUILD_FOLDER = ./dist

go.mod

@@ -5,6 +5,7 @@ go 1.16
 require (
 	github.com/AlecAivazis/survey/v2 v2.1.1
 	github.com/Microsoft/hcsshim v0.8.17 // indirect
+	github.com/blang/semver v3.5.1+incompatible
 	github.com/briandowns/spinner v1.11.1
 	github.com/cenkalti/backoff v2.2.1+incompatible
 	github.com/charmbracelet/glow v1.4.0
@@ -22,6 +23,7 @@ require (
 	github.com/gobuffalo/plush v3.8.3+incompatible
 	github.com/gobuffalo/plushgen v0.1.2
 	github.com/goccy/go-yaml v1.8.0
+	github.com/google/go-github/v37 v37.0.0
 	github.com/gookit/color v1.2.7
 	github.com/gorilla/mux v1.8.0
 	github.com/gorilla/rpc v1.2.0

go.sum

@@ -146,6 +146,7 @@ github.com/bgentry/speakeasy v0.1.0/go.mod h1:+zsyZBPWlz7T6j88CTgSN5bM796AkVf0kB
 github.com/bitly/go-simplejson v0.5.0/go.mod h1:cXHtHw4XUPsvGaxgjIAn8PhEWG9NfngEKAMDJEczWVA=
 github.com/bketelsen/crypt v0.0.3-0.20200106085610-5cbc8cc4026c/go.mod h1:MKsuJmJgSg28kpZDP6UIiPt0e0Oz0kqKNGyRaWEPv84=
 github.com/blang/semver v3.1.0+incompatible/go.mod h1:kRBLl5iJ+tD4TcOOxsy/0fnwebNt5EWlYSAyrTnjyyk=
+github.com/blang/semver v3.5.1+incompatible h1:cQNTCjp13qL8KC3Nbxr/y2Bqb63oX6wdnnjpJbkM4JQ=
 github.com/blang/semver v3.5.1+incompatible/go.mod h1:kRBLl5iJ+tD4TcOOxsy/0fnwebNt5EWlYSAyrTnjyyk=
 github.com/bmizerany/assert v0.0.0-20160611221934-b7ed37b82869/go.mod h1:Ekp36dRnpXw/yCqJaO+ZrUyxD+3VXMFFr56k5XYrpB4=
 github.com/briandowns/spinner v1.11.1 h1:OixPqDEcX3juo5AjQZAnFPbeUA0jvkp2qzB5gOZJ/L0=
@@ -595,8 +596,13 @@ github.com/google/go-cmp v0.5.1/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/
 github.com/google/go-cmp v0.5.2/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/google/go-cmp v0.5.3/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/google/go-cmp v0.5.4/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
-github.com/google/go-cmp v0.5.5 h1:Khx7svrCpmxxtHBq5j2mp/xVjsi8hQMfNLvJFAlrGgU=
 github.com/google/go-cmp v0.5.5/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
+github.com/google/go-cmp v0.5.6 h1:BKbKCqvP6I+rmFHt06ZmyQtvB8xAkWdhFyr0ZUNZcxQ=
+github.com/google/go-cmp v0.5.6/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
+github.com/google/go-github/v37 v37.0.0 h1:rCspN8/6kB1BAJWZfuafvHhyfIo5fkAulaP/3bOQ/tM=
+github.com/google/go-github/v37 v37.0.0/go.mod h1:LM7in3NmXDrX58GbEHy7FtNLbI2JijX93RnMKvWG3m4=
+github.com/google/go-querystring v1.0.0 h1:Xkwi/a1rcvNg1PPYe5vI8GbeBY/jrVuDX5ASuANWTrk=
+github.com/google/go-querystring v1.0.0/go.mod h1:odCYkC5MyYFN7vkCjXpyrEuKhc/BUO6wN/zVPAxq5ck=
 github.com/google/gofuzz v0.0.0-20170612174753-24818f796faf/go.mod h1:HP5RmnzzSNb993RKQDq4+1A4ia9nllfqcQFTQJedwGI=
 github.com/google/gofuzz v1.0.0/go.mod h1:dBl0BpW6vV/+mYPU4Po3pmUjxk6FQPldtuIdl/M65Eg=
 github.com/google/gofuzz v1.1.0/go.mod h1:dBl0BpW6vV/+mYPU4Po3pmUjxk6FQPldtuIdl/M65Eg=

starport/cmd/cmd.go

@@ -1,14 +1,18 @@
 package starportcmd
 
 import (
+	"context"
 	"fmt"
+	"os"
 	"path/filepath"
 	"sort"
 	"strings"
+	"time"
 
 	"github.com/fatih/color"
 	"github.com/spf13/cobra"
 	flag "github.com/spf13/pflag"
+	"github.com/tendermint/starport/starport/internal/version"
 	"github.com/tendermint/starport/starport/pkg/clispinner"
 	"github.com/tendermint/starport/starport/pkg/events"
 	"github.com/tendermint/starport/starport/pkg/goenv"
@@ -17,18 +21,19 @@ import (
 	"github.com/tendermint/starport/starport/services/networkbuilder"
 )
 
-const (
-	flagHome = "home"
-)
+const flagHome = "home"
+const checkVersionTimeout = time.Millisecond * 600
 
 var (
 	infoColor = color.New(color.FgYellow).SprintFunc()
 )
 
 // New creates a new root command for `starport` with its sub commands.
-func New() *cobra.Command {
+func New(ctx context.Context) *cobra.Command {
 	cobra.EnableCommandSorting = false
 
+	checkNewVersion(ctx)
+
 	c := &cobra.Command{
 		Use:   "starport",
 		Short: "Starport offers everything you need to scaffold, test, build, and launch your blockchain",
@@ -162,3 +167,26 @@ func deprecated() []*cobra.Command {
 		},
 	}
 }
+
+func checkNewVersion(ctx context.Context) {
+	if os.Getenv("GITPOD_WORKSPACE_ID") != "" {
+		return
+	}
+
+	ctx, cancel := context.WithTimeout(ctx, checkVersionTimeout)
+	defer cancel()
+
+	isAvailable, next, err := version.CheckNext(ctx)
+	if err != nil || !isAvailable {
+		return
+	}
+
+	fmt.Printf(`·
+· 🛸 Starport %q is available!
+·
+· If you're looking to upgrade check out the instructions: https://docs.starport.network/intro/install.html#upgrading-your-starport-installation
+·
+··
+
+`, next)
+}

starport/cmd/starport/main.go

@@ -14,7 +14,7 @@ import (
 func main() {
 	ctx := clictx.From(context.Background())
 
-	err := starportcmd.New().ExecuteContext(ctx)
+	err := starportcmd.New(ctx).ExecuteContext(ctx)
 
 	if ctx.Err() == context.Canceled || err == context.Canceled {
 		fmt.Println("aborted")

starport/internal/tools/gen-cli-docs/main.go

@@ -5,6 +5,7 @@ package main
 import (
 	"bufio"
 	"bytes"
+	"context"
 	"flag"
 	"fmt"
 	"io"
@@ -35,7 +36,7 @@ func main() {
 	outPath := flag.String("out", ".", ".md file path to place Starport CLI docs inside")
 	flag.Parse()
 
-	if err := generate(starportcmd.New(), *outPath); err != nil {
+	if err := generate(starportcmd.New(context.Background()), *outPath); err != nil {
 		log.Fatal(err)
 	}
 }

starport/internal/version/version.go

@@ -1,13 +1,21 @@
 package version
 
 import (
+	"context"
 	"fmt"
 	"runtime"
+	"strings"
+
+	"github.com/blang/semver"
+	"github.com/google/go-github/v37/github"
 )
 
+const versionDev = "development"
+const prefix = "v"
+
 var (
 	// Version is the semantic version of Starport.
-	Version = ""
+	Version = versionDev
 
 	// Date is the build date of Starport.
 	Date = ""
@@ -16,6 +24,40 @@ var (
 	Head = ""
 )
 
+// CheckNext checks whether there is a new version of Starport.
+func CheckNext(ctx context.Context) (isAvailable bool, version string, err error) {
+	if Version == versionDev {
+		return false, "", nil
+	}
+
+	latest, _, err := github.
+		NewClient(nil).
+		Repositories.
+		GetLatestRelease(ctx, "tendermint", "starport")
+
+	if err != nil {
+		return false, "", err
+	}
+
+	if latest.TagName == nil {
+		return false, "", nil
+	}
+
+	currentVersion, err := semver.Parse(strings.TrimPrefix(Version, prefix))
+	if err != nil {
+		return false, "", err
+	}
+
+	latestVersion, err := semver.Parse(strings.TrimPrefix(*latest.TagName, prefix))
+	if err != nil {
+		return false, "", err
+	}
+
+	isAvailable = latestVersion.GT(currentVersion)
+
+	return isAvailable, *latest.TagName, nil
+}
+
 // Long generates a detailed version info.
 func Long() string {
 	output := fmt.Sprintf("starport version %s %s/%s -build date: %s",