feat: log-mode UI with banner and colorized requests

Author: ArpitRajputGithub

go.mod

@@ -1,3 +1,11 @@
 module github.com/ArpitRajputGithub/httpsdev
 
 go 1.26.5
+
+require github.com/fatih/color v1.19.0
+
+require (
+	github.com/mattn/go-colorable v0.1.14 // indirect
+	github.com/mattn/go-isatty v0.0.20 // indirect
+	golang.org/x/sys v0.42.0 // indirect
+)

go.sum

@@ -0,0 +1,9 @@
+github.com/fatih/color v1.19.0 h1:Zp3PiM21/9Ld6FzSKyL5c/BULoe/ONr9KlbYVOfG8+w=
+github.com/fatih/color v1.19.0/go.mod h1:zNk67I0ZUT1bEGsSGyCZYZNrHuTkJJB+r6Q9VuMi0LE=
+github.com/mattn/go-colorable v0.1.14 h1:9A9LHSqF/7dyVVX6g0U9cwm9pG3kP9gSzcuIPHPsaIE=
+github.com/mattn/go-colorable v0.1.14/go.mod h1:6LmQG8QLFO4G5z1gPvYEzlUgJ2wF+stgPZH1UqBm1s8=
+github.com/mattn/go-isatty v0.0.20 h1:xfD0iDuEKnDkl03q4limB+vH+GxLEtL/jb4xVJSWWEY=
+github.com/mattn/go-isatty v0.0.20/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D7dTCTo3Y=
+golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.42.0 h1:omrd2nAlyT5ESRdCLYdm3+fMfNFE/+Rf4bDIQImRJeo=
+golang.org/x/sys v0.42.0/go.mod h1:4GL1E5IUh+htKOUEOaiffhrAeqysfVGipDYzABqnCmw=

terminal.go

@@ -0,0 +1,18 @@
+package main
+
+import (
+	"io"
+	"os"
+)
+
+func isTerminal(w io.Writer) bool {
+	f, ok := w.(*os.File)
+	if !ok {
+		return false
+	}
+	stat, err := f.Stat()
+	if err != nil {
+		return false
+	}
+	return (stat.Mode() & os.ModeCharDevice) != 0
+}

ui_log.go

@@ -0,0 +1,60 @@
+package main
+
+import (
+	"fmt"
+	"io"
+	"time"
+
+	"github.com/fatih/color"
+)
+
+// runLogUI prints the startup banner then one line per incoming Event.
+// Returns after events channel is closed. Prints a summary on exit.
+func runLogUI(w io.Writer, listenAddr, upstream string, events <-chan Event) {
+	color.NoColor = !isTerminal(w)
+
+	fmt.Fprintln(w)
+	fmt.Fprintf(w, "  %s httpsdev v%s\n\n", color.CyanString("▲"), Version)
+	fmt.Fprintf(w, "  %s Local:    %s\n", color.GreenString("➜"), color.New(color.Bold).Sprintf("https://%s", listenAddr))
+	fmt.Fprintf(w, "  %s Upstream: %s\n", color.GreenString("➜"), upstream)
+	fmt.Fprintf(w, "  %s Cert:     mkcert · valid 30 days\n\n", color.GreenString("➜"))
+	fmt.Fprintf(w, "  press Ctrl+C to quit\n\n")
+
+	var total, errors int
+	var totalDur time.Duration
+	start := time.Now()
+
+	for ev := range events {
+		total++
+		totalDur += ev.Duration
+		if ev.Status >= 400 {
+			errors++
+		}
+		fmt.Fprintln(w, formatEvent(ev))
+	}
+
+	if total == 0 {
+		return
+	}
+	avg := totalDur / time.Duration(total)
+	fmt.Fprintf(w, "\nserved %d requests · %d errors · avg %s · uptime %s\n",
+		total, errors, avg.Round(time.Millisecond), time.Since(start).Round(time.Second))
+}
+
+func formatEvent(ev Event) string {
+	statusColor := color.New(color.FgGreen)
+	switch {
+	case ev.Status >= 500:
+		statusColor = color.New(color.FgRed, color.Bold)
+	case ev.Status >= 400:
+		statusColor = color.New(color.FgRed)
+	case ev.Status >= 300:
+		statusColor = color.New(color.FgYellow)
+	}
+	return fmt.Sprintf("%-6s %-30s %s  %s",
+		color.CyanString("%s", ev.Method),
+		ev.Path,
+		statusColor.Sprintf("%d", ev.Status),
+		ev.Duration.Round(time.Millisecond),
+	)
+}