Merge pull request #77 from blinklabs-io/feat/version

feat: version

Makefile

@@ -7,6 +7,12 @@ GO_FILES=$(shell find $(ROOT_DIR) -name '*.go')
 # Gather list of expected binaries
 BINARIES=nview
 
+# Extract Go module name from go.mod
+GOMODULE=$(shell grep ^module $(ROOT_DIR)/go.mod | awk '{ print $$2 }')
+
+# Set version strings based on git tag and current ref
+GO_LDFLAGS=-ldflags "-s -w -X '$(GOMODULE)/internal/version.Version=$(shell git describe --tags --exact-match 2>/dev/null)' -X '$(GOMODULE)/internal/version.CommitHash=$(shell git rev-parse --short HEAD)'"
+
 .PHONY: build mod-tidy clean test
 
 all: format build
@@ -30,4 +36,6 @@ test: tidy
 # Build our program binaries
 # Depends on GO_FILES to determine when rebuild is needed
 $(BINARIES): mod-tidy $(GO_FILES)
-	go build -ldflags="-s -w" -o $(@) .
+	go build \
+		$(GO_LDFLAGS) \
+		-o $(@) .

internal/version/version.go

@@ -0,0 +1,31 @@
+// Copyright 2023 Blink Labs, LLC.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package version
+
+import (
+	"fmt"
+)
+
+// These are populated at build time
+var Version string
+var CommitHash string
+
+func GetVersionString() string {
+	if Version != "" {
+		return fmt.Sprintf("%s (commit %s)", Version, CommitHash)
+	} else {
+		return fmt.Sprintf("devel (commit %s)", CommitHash)
+	}
+}

main.go

@@ -33,6 +33,8 @@ import (
 	"github.com/rivo/tview"
 	"github.com/shirou/gopsutil/v3/process"
 	terminal "golang.org/x/term"
+
+	"github.com/blinklabs-io/nview/internal/version"
 )
 
 // Global command line flags
@@ -298,10 +300,17 @@ func getTestText(ctx context.Context, promMetrics *PromMetrics) string {
 
 	var sb strings.Builder
 
+	// Style / UI
+	var width = 71
+
+	var twoColWidth int = (width - 3) / 2
+	var twoColSecond int = twoColWidth + 2
+
 	// Main section
 	uptime := timeLeft(uptimes)
-	sb.WriteString(fmt.Sprintf(" Uptime: [blue]%s[white]\n", uptime))
-	sb.WriteString(fmt.Sprintf("%s\n", strings.Repeat("-", 20)))
+	sb.WriteString(fmt.Sprintf(" Uptime: [blue]%-"+strconv.Itoa(twoColSecond-9-len(uptime))+"s[white]", uptime))
+	sb.WriteString(fmt.Sprintf(" nview Version: [blue]%-"+strconv.Itoa(twoColWidth)+"s[white]\n", version.GetVersionString()))
+	sb.WriteString(fmt.Sprintf("%s\n", strings.Repeat("-", width+1)))
 
 	// Epoch progress
 	var epochProgress float32
@@ -470,8 +479,9 @@ func getHomeText(ctx context.Context, promMetrics *PromMetrics) string {
 
 	// Main section
 	uptime := timeLeft(uptimes)
-	sb.WriteString(fmt.Sprintf(" Uptime: [blue]%s[white]\n", uptime))
-	sb.WriteString(fmt.Sprintf("%s\n", strings.Repeat("-", 20)))
+	sb.WriteString(fmt.Sprintf(" Uptime: [blue]%-"+strconv.Itoa(twoColSecond-9-len(uptime))+"s[white]", uptime))
+	sb.WriteString(fmt.Sprintf(" nview Version: [blue]%-"+strconv.Itoa(twoColWidth)+"s[white]\n", version.GetVersionString()))
+	sb.WriteString(fmt.Sprintf("%s\n", strings.Repeat("-", width+1)))
 
 	// Epoch progress
 	var epochProgress float32
@@ -860,10 +870,17 @@ func getInfoText(ctx context.Context) string {
 
 	var sb strings.Builder
 
+	// Style / UI
+	var width = 71
+
+	var twoColWidth int = (width - 3) / 2
+	var twoColSecond int = twoColWidth + 2
+
 	// Main section
 	uptime := timeLeft(uptimes)
-	sb.WriteString(fmt.Sprintf(" Uptime: [blue]%s[white]\n", uptime))
-	sb.WriteString(fmt.Sprintf("%s\n", strings.Repeat("-", 20)))
+	sb.WriteString(fmt.Sprintf(" Uptime: [blue]%-"+strconv.Itoa(twoColSecond-9-len(uptime))+"s[white]", uptime))
+	sb.WriteString(fmt.Sprintf(" nview Version: [blue]%-"+strconv.Itoa(twoColWidth)+"s[white]\n", version.GetVersionString()))
+	sb.WriteString(fmt.Sprintf("%s\n", strings.Repeat("-", width+1)))
 
 	if showPeers {
 		sb.WriteString(fmt.Sprintf(
@@ -919,10 +936,17 @@ func getPeerText(ctx context.Context) string {
 
 	var sb strings.Builder
 
+	// Style / UI
+	var width = 71
+
+	var twoColWidth int = (width - 3) / 2
+	var twoColSecond int = twoColWidth + 2
+
 	// Main section
 	uptime := timeLeft(uptimes)
-	sb.WriteString(fmt.Sprintf(" Uptime: [blue]%s[white]\n", uptime))
-	sb.WriteString(fmt.Sprintf("%s\n", strings.Repeat("-", 20)))
+	sb.WriteString(fmt.Sprintf(" Uptime: [blue]%-"+strconv.Itoa(twoColSecond-9-len(uptime))+"s[white]", uptime))
+	sb.WriteString(fmt.Sprintf(" nview Version: [blue]%-"+strconv.Itoa(twoColWidth)+"s[white]\n", version.GetVersionString()))
+	sb.WriteString(fmt.Sprintf("%s\n", strings.Repeat("-", width+1)))
 
 	// bail on FreeBSD due to missing connections support
 	if runtime.GOOS == "freebsd" {
@@ -1024,7 +1048,6 @@ func getPeerText(ctx context.Context) string {
 		charMarked = string('▌')
 		charUnmarked = string('▖')
 	}
-	width := 71
 	granularity := width - 3
 	granularitySmall := granularity / 2
 	if checkPeers {