print out url in dev server

cmd/devserver/main.go

@@ -4,11 +4,15 @@ import (
 	"context"
 	"fmt"
 	"log"
+	"net/http"
 	"os"
 	"os/exec"
 	"os/signal"
+	"time"
 
+	"github.com/fatih/color"
 	"github.com/spf13/pflag"
+	"golang.org/x/sync/errgroup"
 )
 
 func startViteServer(
@@ -42,6 +46,52 @@ func startGoServer(
 	return c.Start()
 }
 
+func isAvailable(
+	ctx context.Context,
+	url string,
+) error {
+	req, err := http.NewRequestWithContext(
+		ctx,
+		http.MethodHead,
+		url,
+		nil)
+	if err != nil {
+		return err
+	}
+
+	res, err := http.DefaultClient.Do(req)
+	if err != nil {
+		return err
+	}
+	defer res.Body.Close()
+
+	return nil
+}
+
+func waitForAvailability(
+	ctx context.Context,
+	urls ...string,
+) error {
+	g, ctx := errgroup.WithContext(ctx)
+	for _, url := range urls {
+		g.Go(func() error {
+			for {
+				if err := isAvailable(ctx, url); err == nil {
+					return nil
+				}
+
+				select {
+				case <-ctx.Done():
+					return ctx.Err()
+				case <-time.After(time.Millisecond * 100):
+
+				}
+			}
+		})
+	}
+	return g.Wait()
+}
+
 func main() {
 	var flags struct {
 		Root string
@@ -74,13 +124,32 @@ func main() {
 		log.Panic(err)
 	}
 
+	viteURL := fmt.Sprintf("http://localhost:%d", flags.Vite.Port)
 	if err := startGoServer(
 		ctx,
 		flags.Root,
-		fmt.Sprintf("http://localhost:%d", flags.Vite.Port),
+		viteURL,
 	); err != nil {
 		log.Panic(err)
 	}
 
+	{
+		goURL := "http://localhost:8067/"
+		ctx, done := context.WithTimeout(ctx, time.Second*5)
+		defer done()
+
+		if err := waitForAvailability(
+			ctx,
+			viteURL,
+			goURL,
+		); err != nil {
+			log.Panic(err)
+		}
+
+		green := color.New(color.FgGreen).SprintFunc()
+		fmt.Println()
+		fmt.Printf("development server running...\n%s\n", green(goURL))
+	}
+
 	<-ctx.Done()
 }

go.mod

@@ -4,10 +4,12 @@ go 1.24.0
 
 require (
 	cloud.google.com/go/firestore v1.18.0
+	github.com/fatih/color v1.14.1
 	github.com/spf13/pflag v1.0.6
 	github.com/spf13/viper v1.19.0
 	github.com/syndtr/goleveldb v1.0.0
 	golang.org/x/oauth2 v0.27.0
+	golang.org/x/sync v0.11.0
 	google.golang.org/api v0.222.0
 	google.golang.org/grpc v1.70.0
 )
@@ -28,6 +30,8 @@ require (
 	github.com/googleapis/gax-go/v2 v2.14.1 // indirect
 	github.com/hashicorp/hcl v1.0.0 // indirect
 	github.com/magiconair/properties v1.8.7 // indirect
+	github.com/mattn/go-colorable v0.1.13 // indirect
+	github.com/mattn/go-isatty v0.0.17 // indirect
 	github.com/mitchellh/mapstructure v1.5.0 // indirect
 	github.com/pelletier/go-toml/v2 v2.2.2 // indirect
 	github.com/sagikazarmark/locafero v0.4.0 // indirect
@@ -47,7 +51,6 @@ require (
 	golang.org/x/crypto v0.33.0 // indirect
 	golang.org/x/exp v0.0.0-20230905200255-921286631fa9 // indirect
 	golang.org/x/net v0.35.0 // indirect
-	golang.org/x/sync v0.11.0 // indirect
 	golang.org/x/sys v0.30.0 // indirect
 	golang.org/x/text v0.22.0 // indirect
 	golang.org/x/time v0.10.0 // indirect

go.sum

@@ -14,6 +14,8 @@ github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSs
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc h1:U9qPSI2PIWSS1VwoXQT9A3Wy9MM3WgvqSxFWenqJduM=
 github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/fatih/color v1.14.1 h1:qfhVLaG5s+nCROl1zJsZRxFeYrHLqWroPOQ8BWiNb4w=
+github.com/fatih/color v1.14.1/go.mod h1:2oHN61fhTpgcxD3TSWCgKDiH1+x4OiDVVGH8WlgGZGg=
 github.com/felixge/httpsnoop v1.0.4 h1:NFTV2Zj1bL4mc9sqWACXbQFVBBg2W3GPvqp8/ESS2Wg=
 github.com/felixge/httpsnoop v1.0.4/go.mod h1:m8KPJKqk1gH5J9DgRY2ASl2lWCfGKXixSwevea8zH2U=
 github.com/frankban/quicktest v1.14.6 h1:7Xjx+VpznH+oBnejlPUj8oUpdxnVs4f8XU8WnHkI4W8=
@@ -54,6 +56,11 @@ github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=
 github.com/kr/text v0.2.0/go.mod h1:eLer722TekiGuMkidMxC/pM04lWEeraHUUmBw8l2grE=
 github.com/magiconair/properties v1.8.7 h1:IeQXZAiQcpL9mgcAe1Nu6cX9LLw6ExEHKjN0VQdvPDY=
 github.com/magiconair/properties v1.8.7/go.mod h1:Dhd985XPs7jluiymwWYZ0G4Z61jb3vdS329zhj2hYo0=
+github.com/mattn/go-colorable v0.1.13 h1:fFA4WZxdEF4tXPZVKMLwD8oUnCTTo08duU7wxecdEvA=
+github.com/mattn/go-colorable v0.1.13/go.mod h1:7S9/ev0klgBDR4GtXTXX8a3vIGJpMovkB8vQcUbaXHg=
+github.com/mattn/go-isatty v0.0.16/go.mod h1:kYGgaQfpe5nmfYZH+SKPsOc2e4SrIfOl2e/yFXSvRLM=
+github.com/mattn/go-isatty v0.0.17 h1:BTarxUcIeDqL27Mc+vyvdWYSL28zpIhv3RoTdsLMPng=
+github.com/mattn/go-isatty v0.0.17/go.mod h1:kYGgaQfpe5nmfYZH+SKPsOc2e4SrIfOl2e/yFXSvRLM=
 github.com/mitchellh/mapstructure v1.5.0 h1:jeMsZIYE/09sWLaz43PL7Gy6RuMjD2eJVyuac5Z2hdY=
 github.com/mitchellh/mapstructure v1.5.0/go.mod h1:bFUtVrKA4DC2yAKiSyO/QUcy7e+RRV2QTWOzhPopBRo=
 github.com/onsi/ginkgo v1.6.0/go.mod h1:lLunBs/Ym6LB5Z9jYTR76FiuTmxDTDusOGeTQH+WWjE=
@@ -132,6 +139,7 @@ golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJ
 golang.org/x/sync v0.11.0 h1:GGz8+XQP4FvTTrjZPzNKTMFtSXH80RAzG+5ghFPgK9w=
 golang.org/x/sync v0.11.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
 golang.org/x/sys v0.0.0-20180909124046-d0be0721c37e/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
+golang.org/x/sys v0.0.0-20220811171246-fbc7d0a398ab/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.30.0 h1:QjkSwP/36a20jFYWkSue1YwXzLmsV5Gfq7Eiy72C1uc=
 golang.org/x/sys v0.30.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=