From e66d800881471a6bfa96af09fa7b33dadffeec0c Mon Sep 17 00:00:00 2001
From: omicron <omicron.me@protonmail.com>
Date: Thu, 8 May 2025 15:54:13 +0200
Subject: [PATCH] Add version package and update the makefile

The makefile will grab the version info from git and pass it to the
linker so that version information based on tags, commits and commit
times is available in the code.
---
 Makefile                     | 11 ++++++++++-
 internal/database/manager.go | 10 +++++-----
 internal/version/version.go  | 17 +++++++++++++++++
 3 files changed, 32 insertions(+), 6 deletions(-)
 create mode 100644 internal/version/version.go

diff --git a/Makefile b/Makefile
index 900c766..c96713f 100644
--- a/Makefile
+++ b/Makefile
@@ -3,6 +3,15 @@ BINARIES = $(patsubst cmd/%/,%,$(wildcard cmd/*/))
 
 .PHONY: all build test validate clean run $(BINARIES)
 
+VERSION := $(shell git describe --tags --always --dirty)
+COMMIT := $(shell git rev-parse --short HEAD)
+COMMIT_DATETIME := $(shell git log -1 --format=%cd --date=iso8601)
+
+LDFLAGS := -X git.omicron.one/omicron/linkshare/internal/version.Version=$(VERSION) \
+           -X git.omicron.one/omicron/linkshare/internal/version.GitCommit=$(COMMIT) \
+           -X "git.omicron.one/omicron/linkshare/internal/version.CommitDateTime=$(COMMIT_DATETIME)"
+
+
 all: build
 	
 
@@ -13,7 +22,7 @@ $(BINARY_DIR):
 	mkdir -p $(BINARY_DIR)
 
 $(BINARIES): %: $(BINARY_DIR)
-	go build -o $(BINARY_DIR)/$@ ./cmd/$@/
+	go build -ldflags '$(LDFLAGS)' -o $(BINARY_DIR)/$@ ./cmd/$@/
 
 test:
 	go test ./...
diff --git a/internal/database/manager.go b/internal/database/manager.go
index 36af320..cd90837 100644
--- a/internal/database/manager.go
+++ b/internal/database/manager.go
@@ -14,9 +14,9 @@ import (
 	"strconv"
 
 	_ "github.com/mattn/go-sqlite3"
-)
 
-const expectedSchemaVersion = 1
+	"git.omicron.one/omicron/linkshare/internal/version"
+)
 
 // DB represents a database connection
 type DB struct {
@@ -123,13 +123,13 @@ func (db *DB) CheckSchemaVersion() error {
 	if err != nil {
 		return err
 	}
-	version, err := db.GetSchemaVersion()
+	version_, err := db.GetSchemaVersion()
 	if err != nil {
 		return err
 	}
-	if version < expectedSchemaVersion {
+	if version_ < version.SchemaVersion {
 		return ErrSchemaOutdated
-	} else if version > expectedSchemaVersion {
+	} else if version_ > version.SchemaVersion {
 		return ErrSchemaUnsupported
 	}
 	return nil
diff --git a/internal/version/version.go b/internal/version/version.go
new file mode 100644
index 0000000..51e5feb
--- /dev/null
+++ b/internal/version/version.go
@@ -0,0 +1,17 @@
+package version
+
+import "fmt"
+
+var (
+	Version        = "dev"
+	GitCommit      = "unknown"
+	CommitDateTime = "unknown"
+	SchemaVersion  = 1
+)
+
+// PrintVersionInfo prints formatted version information to stdout
+func Print() {
+	fmt.Printf("Version:      %s\n", Version)
+	fmt.Printf("Git commit:   %s %s\n", GitCommit, CommitDateTime)
+	fmt.Printf("Schema:       v%d\n", SchemaVersion)
+}