first commit

1 files changed, 48 insertions, 0 deletions

diff --git a/internal/cmd/registry.go b/internal/cmd/registry.go
new file mode 100644
index 0000000..e056469
--- /dev/null
+++ b/internal/cmd/registry.go
@@ -0,0 +1,48 @@
+package cmd
+
+import (
+	"fmt"
+	"strings"
+)
+
+type Handler func(args []string)
+
+type Command struct {
+	Name     string
+	Aliases  []string
+	Handler  Handler
+	MinArgs  int
+}
+
+type Registry struct {
+	cmds map[string]Command
+}
+
+func NewRegistry() *Registry {
+	return &Registry{cmds: make(map[string]Command)}
+}
+
+func (r *Registry) Register(cmd Command) {
+	r.cmds[cmd.Name] = cmd
+	for _, a := range cmd.Aliases {
+		r.cmds[a] = cmd
+	}
+}
+
+func (r *Registry) Dispatch(input string) error {
+	parts := strings.Fields(input)
+	if len(parts) == 0 {
+		return nil
+	}
+	name := strings.ToLower(parts[0])
+	cmd, ok := r.cmds[name]
+	if !ok {
+		return fmt.Errorf("unknown command: %s", name)
+	}
+	args := parts[1:]
+	if len(args) < cmd.MinArgs {
+		return fmt.Errorf("usage: %s requires at least %d arguments", cmd.Name, cmd.MinArgs)
+	}
+	cmd.Handler(args)
+	return nil
+}