feat: add version command and build metadata to Makefile

Author: aksOps

Makefile

@@ -1,13 +1,20 @@
 .PHONY: build test vet check ui-install ui-build dev-ui dev-go
 
+VERSION  ?= $(shell git describe --tags --always --dirty 2>/dev/null || echo dev)
+COMMIT   ?= $(shell git rev-parse --short HEAD 2>/dev/null || echo unknown)
+DATE     ?= $(shell date -u +%Y-%m-%dT%H:%M:%SZ)
+LDFLAGS  := -X github.com/RandomCodeSpace/docscontext/cmd.Version=$(VERSION) \
+            -X github.com/RandomCodeSpace/docscontext/cmd.Commit=$(COMMIT) \
+            -X github.com/RandomCodeSpace/docscontext/cmd.Date=$(DATE)
+
 ui-install:
 	cd ui && npm install
 
 ui-build:
 	cd ui && npm run build
 
 build: ui-build
-	CGO_ENABLED=0 go build ./...
+	CGO_ENABLED=0 go build -ldflags "$(LDFLAGS)" ./...
 
 test:
 	CGO_ENABLED=0 go test -timeout 120s ./...

cmd/version.go

@@ -0,0 +1,26 @@
+package cmd
+
+import (
+	"fmt"
+
+	"github.com/spf13/cobra"
+)
+
+// Set via -ldflags at build time.
+var (
+	Version = "dev"
+	Commit  = "unknown"
+	Date    = "unknown"
+)
+
+var versionCmd = &cobra.Command{
+	Use:   "version",
+	Short: "Print the version of DocsContext",
+	Run: func(cmd *cobra.Command, args []string) {
+		fmt.Printf("DocsContext %s (commit: %s, built: %s)\n", Version, Commit, Date)
+	},
+}
+
+func init() {
+	rootCmd.AddCommand(versionCmd)
+}

ui/dist/index.html

@@ -0,0 +1 @@
+<\!DOCTYPE html>