3 files changed, 117 insertions, 0 deletions
diff --git a/cmd/mv.go b/cmd/mv.go
new file mode 100644
index 0000000..c3f4b5b
--- /dev/null
+++ b/cmd/mv.go
@@ -0,0 +1,59 @@
+package cmd
+
+import (
+	"errors"
+	"os"
+	"path/filepath"
+
+	"github.com/spf13/cobra"
+
+	"gxlin.org/zk/pkg"
+)
+
+func init() {
+	rootCmd.AddCommand(mvCmd)
+}
+
+var mvCmd = &cobra.Command{
+	Use:  "mv [source] [target]",
+	Args: mvCmdArgs,
+	Run:  mvCmdRun,
+}
+
+func mvCmdArgs(cmd *cobra.Command, args []string) error {
+	if len(args) != 2 {
+		return errors.New("requires 2 args")
+	}
+
+	return nil
+}
+
+func mvCmdRun(cmd *cobra.Command, args []string) {
+	rename(args[0], args[1])
+}
+
+func rename(source, target string) {
+	source, err := filepath.Abs(source)
+	if err != nil {
+		panic("Unable to get abspath of " + source)
+	}
+
+	target, err = filepath.Abs(target)
+	if err != nil {
+		panic("Unable to get abspath of " + target)
+	}
+
+	if !pkg.DocCollection.Contain(source) {
+		panic("Database doesn't contain " + source)
+	}
+
+	if err := os.Rename(source, target); err != nil {
+		panic(err)
+	}
+
+	doc := pkg.DocCollection[source]
+	for backlink := range doc.Backlinks {
+		pkg.DocCollection[backlink].UpdateLinks(source, target)
+	}
+
+}
diff --git a/cmd/mv_test.go b/cmd/mv_test.go
new file mode 100644
index 0000000..4e0544f
--- /dev/null
+++ b/cmd/mv_test.go
@@ -0,0 +1,39 @@
+package cmd
+
+import (
+	"os"
+	"path/filepath"
+	"testing"
+
+	"gxlin.org/zk/pkg"
+)
+
+func TestRename(t *testing.T) {
+	tmpDir := t.TempDir()
+	backlinkedFilename := filepath.Join(tmpDir, "backlinked.md")
+	sourceFilename := filepath.Join(tmpDir, "source.md")
+	targetFilename := filepath.Join(tmpDir, "target.md")
+
+	os.WriteFile(backlinkedFilename, []byte("[Title](source.md)"), 0644)
+	os.WriteFile(sourceFilename, []byte("Hello World"), 0644)
+
+	pkg.DocCollection = pkg.NewDocs(tmpDir)
+	rename(sourceFilename, targetFilename)
+
+	targetFileContent, err := os.ReadFile(targetFilename)
+	if err != nil {
+		t.Error(err)
+	} else if string(targetFileContent) != "Hello World" {
+		t.Errorf("File content or matched after moved")
+	}
+
+	backlinkedFileContent, err := os.ReadFile(backlinkedFilename)
+	if err != nil {
+		t.Error(err)
+	} else if string(backlinkedFileContent) != "[Title](target.md)" {
+		t.Errorf(
+			"The link in backlinked file doesn't match. File content:\n%s",
+			string(backlinkedFileContent))
+
+	}
+}
diff --git a/cmd/root.go b/cmd/root.go
new file mode 100644
index 0000000..19bf463
--- /dev/null
+++ b/cmd/root.go
@@ -0,0 +1,19 @@
+package cmd
+
+import (
+	"fmt"
+	"os"
+
+	"github.com/spf13/cobra"
+)
+
+var rootCmd = &cobra.Command{
+	Use: "zk",
+}
+
+func Execute() {
+	if err := rootCmd.Execute(); err != nil {
+		fmt.Println(err)
+		os.Exit(1)
+	}
+}