2 files changed, 61 insertions, 0 deletions
diff --git a/internal/model/commandtype_string.go b/internal/model/commandtype_string.go
new file mode 100644
index 0000000..1ad4635
--- /dev/null
+++ b/internal/model/commandtype_string.go
@@ -0,0 +1,25 @@
+// Code generated by "stringer -type=CommandType"; DO NOT EDIT.
+
+package model
+
+import "strconv"
+
+func _() {
+	// An "invalid array index" compiler error signifies that the constant values have changed.
+	// Re-run the stringer command to generate them again.
+	var x [1]struct{}
+	_ = x[Create-0]
+	_ = x[Merge-1]
+	_ = x[Remove-2]
+}
+
+const _CommandType_name = "CreateMergeRemove"
+
+var _CommandType_index = [...]uint8{0, 6, 11, 17}
+
+func (i CommandType) String() string {
+	if i < 0 || i >= CommandType(len(_CommandType_index)-1) {
+		return "CommandType(" + strconv.FormatInt(int64(i), 10) + ")"
+	}
+	return _CommandType_name[_CommandType_index[i]:_CommandType_index[i+1]]
+}
diff --git a/internal/model/mutations.go b/internal/model/mutations.go
new file mode 100644
index 0000000..6463823
--- /dev/null
+++ b/internal/model/mutations.go
@@ -0,0 +1,36 @@
+package model
+
+import (
+	"fmt"
+	"strings"
+	"time"
+
+	"go.neonxp.dev/json/model"
+)
+
+type Mutation struct {
+	Date time.Time
+	Type CommandType
+	Path []string
+	Body model.Node
+}
+
+func (m *Mutation) String() string {
+	body, _ := m.Body.MarshalJSON()
+	return fmt.Sprintf(
+		"Date=%s Type=%s Path='%s' Body=%s",
+		m.Date.Format(time.RFC3339),
+		m.Type,
+		strings.Join(m.Path, "/"),
+		string(body),
+	)
+}
+
+//go:generate stringer -type=CommandType
+type CommandType int
+
+const (
+	Create CommandType = iota
+	Merge
+	Remove
+)