add version support and release configuration

.github/workflows/release.yml

@@ -0,0 +1,31 @@
+name: Release
+
+on:
+  push:
+    tags:
+      - 'v*'
+
+permissions:
+  contents: write
+
+jobs:
+  goreleaser:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+
+      - name: Set up Go
+        uses: actions/setup-go@v4
+        with:
+          go-version: '1.20'
+
+      - name: Run GoReleaser
+        uses: goreleaser/goreleaser-action@v4
+        with:
+          version: latest
+          args: release --clean
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

.goreleaser.yml

@@ -0,0 +1,78 @@
+version: 2
+
+before:
+  hooks:
+    - go mod tidy
+
+builds:
+  - id: memex
+    main: ./cmd/memex
+    binary: memex
+    goos:
+      - linux
+      - darwin
+      - windows
+    goarch:
+      - amd64
+      - arm64
+    env:
+      - CGO_ENABLED=0
+    ldflags:
+      - -s -w -X main.version={{.Version}}
+
+  - id: memexd
+    main: ./cmd/memexd
+    binary: memexd
+    goos:
+      - linux
+      - darwin
+      - windows
+    goarch:
+      - amd64
+      - arm64
+    env:
+      - CGO_ENABLED=0
+    ldflags:
+      - -s -w -X main.version={{.Version}}
+
+archives:
+  - id: memex-archive
+    builds:
+      - memex
+      - memexd
+    name_template: >-
+      {{ .ProjectName }}_
+      {{- title .Os }}_
+      {{- if eq .Arch "amd64" }}x86_64
+      {{- else if eq .Arch "386" }}i386
+      {{- else }}{{ .Arch }}{{ end }}
+    format_overrides:
+      - goos: windows
+        format: zip
+    files:
+      - README.md
+      - LICENSE
+      - docs/*
+
+checksum:
+  name_template: 'checksums.txt'
+
+changelog:
+  sort: asc
+  filters:
+    exclude:
+      - '^docs:'
+      - '^test:'
+      - '^ci:'
+      - Merge pull request
+      - Merge branch
+
+brews:
+  - repository:
+      owner: systemshift
+      name: homebrew-memex
+    homepage: "https://github.com/systemshift/memex"
+    description: "Graph-oriented data management tool"
+    install: |
+      bin.install "memex"
+      bin.install "memexd"

README.md

@@ -18,6 +18,39 @@ Memex is a graph-oriented data management tool.
 
 ## Installation
 
+### From Pre-built Binaries
+
+Download the latest pre-built binaries for your platform from the [GitHub Releases](https://github.com/systemshift/memex/releases) page.
+
+#### Linux and macOS
+```bash
+# Download and extract the archive
+tar xzf memex_<OS>_<ARCH>.tar.gz
+
+# Move binaries to your PATH
+sudo mv memex /usr/local/bin/
+sudo mv memexd /usr/local/bin/
+
+# Verify installation
+memex --version
+memexd --version
+```
+
+#### Windows
+1. Download the ZIP archive for Windows
+2. Extract the contents
+3. Add the extracted directory to your PATH
+4. Verify installation by running `memex --version` and `memexd --version`
+
+### Using Homebrew (macOS)
+
+```bash
+# Install both memex and memexd
+brew install systemshift/memex/memex
+```
+
+### Build from Source
+
 ```bash
 # Build the CLI tool
 go build -o ~/bin/memex ./cmd/memex
@@ -40,6 +73,9 @@ memex connect myrepo.mx
 # Show repository status
 memex status
 
+# Show version information
+memex version
+
 # Add a file
 memex add document.txt
 

cmd/memex/main.go

@@ -6,9 +6,18 @@ import (
 	"os"
 	"path/filepath"
 
-	"github.com/systemshift/memex/pkg/memex"
+	"github.com/systemshift/memex/internal/memex"
 )
 
+var (
+	showVersion = flag.Bool("version", false, "Show version information")
+)
+
+func printVersion() {
+	fmt.Println(memex.BuildInfo())
+	os.Exit(0)
+}
+
 func usage() {
 	fmt.Printf(`Usage: %s <command> [arguments]
 
@@ -21,6 +30,7 @@ Built-in Commands:
   link <src> <dst> <type>  Create a link between nodes
   links <id>               Show links for a node
   status                   Show repository status
+  version                  Show version information
   export <path>            Export repository to tar archive
   import <path>            Import repository from tar archive
 
@@ -47,6 +57,10 @@ func main() {
 	flag.Usage = usage
 	flag.Parse()
 
+	if *showVersion {
+		printVersion()
+	}
+
 	cmds := memex.NewCommands()
 	defer cmds.Close()
 
@@ -138,6 +152,15 @@ func main() {
 		}
 		err = cmds.Status()
 
+	case "version":
+		if err := cmds.AutoConnect(); err == nil {
+			// If connected to a repo, show its version too
+			err = cmds.ShowVersion()
+		} else {
+			// Just show memex version
+			fmt.Println(memex.BuildInfo())
+		}
+
 	case "export":
 		if len(args) != 1 {
 			usage()

cmd/memexd/main.go

@@ -9,13 +9,22 @@ import (
 	"net/http"
 	"os"
 	"path/filepath"
+	"strings"
 
 	"github.com/go-chi/chi/v5"
 	"github.com/go-chi/chi/v5/middleware"
+	"github.com/systemshift/memex/internal/memex"
 	"github.com/systemshift/memex/internal/memex/core"
 	"github.com/systemshift/memex/internal/memex/repository"
 )
 
+// VersionResponse represents version information
+type VersionResponse struct {
+	Version   string `json:"version"`
+	Commit    string `json:"commit"`
+	BuildDate string `json:"buildDate"`
+}
+
 // Server handles HTTP requests and manages the repository
 type Server struct {
 	repo     core.Repository
@@ -51,8 +60,14 @@ func main() {
 	// Parse command line flags
 	addr := flag.String("addr", ":3000", "HTTP service address")
 	repoPath := flag.String("repo", "", "Repository path")
+	showVersion := flag.Bool("version", false, "Show version information")
 	flag.Parse()
 
+	if *showVersion {
+		fmt.Println(memex.BuildInfo())
+		os.Exit(0)
+	}
+
 	if *repoPath == "" {
 		log.Fatal("Repository path required")
 	}
@@ -87,6 +102,7 @@ func main() {
 	// Routes
 	r.Get("/", server.handleIndex)
 	r.Route("/api", func(r chi.Router) {
+		r.Get("/version", server.handleVersion)
 		r.Get("/graph", server.handleGraph)
 		r.Get("/nodes/{id}", server.handleGetNode)
 		r.Get("/nodes/{id}/content", server.handleGetContent)
@@ -242,3 +258,23 @@ func (s *Server) handleGetContent(w http.ResponseWriter, r *http.Request) {
 
 	w.Write(content)
 }
+
+// handleVersion returns version information
+func (s *Server) handleVersion(w http.ResponseWriter, r *http.Request) {
+	info := strings.Split(memex.BuildInfo(), "\n")
+	version := strings.TrimPrefix(info[0], "Version: ")
+	commit := strings.TrimPrefix(info[1], "Commit: ")
+	date := strings.TrimPrefix(info[2], "Build Date: ")
+
+	response := VersionResponse{
+		Version:   version,
+		Commit:    commit,
+		BuildDate: date,
+	}
+
+	w.Header().Set("Content-Type", "application/json")
+	if err := json.NewEncoder(w).Encode(response); err != nil {
+		http.Error(w, fmt.Sprintf("Error encoding response: %v", err), http.StatusInternalServerError)
+		return
+	}
+}

docs/VERSION.md

@@ -0,0 +1,74 @@
+# Version Compatibility Guide
+
+Memex uses semantic versioning for both the application and repository format to ensure safe upgrades and compatibility.
+
+## Version Types
+
+### Application Version
+- The version of the memex binaries (e.g., 1.2.3)
+- Follows semantic versioning (MAJOR.MINOR.PATCH)
+- Displayed with `memex --version`
+
+### Repository Format Version
+- The version of the .mx file format (e.g., 1.0)
+- Uses MAJOR.MINOR format
+- Stored in repository header
+- Checked when opening repositories
+
+## Compatibility Rules
+
+When opening a repository, Memex checks:
+1. Repository format version compatibility
+2. Records which version of memex created the repository
+
+Version compatibility rules:
+- Major version must match exactly (e.g., 1.x can't open 2.x repositories)
+- Minor version of the repository must be <= current version
+- The version that created a repository is stored in its header
+
+## Version Information
+
+Use `memex version` to check:
+- Current memex version
+- Repository format version
+- Which memex version created the repository
+
+Example output:
+```
+Memex Version: 1.2.3
+Commit: abc123
+Build Date: 2024-01-01
+
+Repository Format Version: 1.0
+Created by Memex Version: 1.2.0
+```
+
+## Version History
+
+### Repository Format Versions
+
+- 1.0: Initial stable format
+  - Content-addressable storage
+  - DAG structure
+  - Transaction log
+  - Basic metadata
+
+Future versions will maintain backward compatibility within the same major version.
+
+## Upgrading Repositories
+
+When a new version of Memex is released:
+
+1. If only PATCH version changes:
+   - No action needed
+   - Full compatibility maintained
+
+2. If MINOR version changes:
+   - Repository format is compatible
+   - New features may be available
+   - No migration needed
+
+3. If MAJOR version changes:
+   - Repository format may be incompatible
+   - Migration tool will be provided
+   - Check release notes for upgrade path