From 99f43d34088d7d0023dd6bda5406c4e9673ff589 Mon Sep 17 00:00:00 2001
From: a <a@tuxpa.in>
Date: Sun, 11 Jun 2023 09:34:42 -0500
Subject: [PATCH] monitor

---
 src/bsp/wm.go | 46 +++++++++++++++++++++++++++++++++++++---------
 1 file changed, 37 insertions(+), 9 deletions(-)

diff --git a/src/bsp/wm.go b/src/bsp/wm.go
index e67b7fe..a830f4c 100644
--- a/src/bsp/wm.go
+++ b/src/bsp/wm.go
@@ -1,6 +1,7 @@
 package bsp
 
 import (
+	"fmt"
 	"sync"
 
 	"tuxpa.in/t/wm/src/bsp/cfg"
@@ -19,39 +20,66 @@ type Desktop struct {
 	Name    string
 	Monitor *Monitor
 
-	Cfg *cfg.Modifier[Config]
+	Cfg *cfg.Modifier[*Config]
 }
 
 type Monitor struct {
 	Name string
 
-	Cfg *cfg.Modifier[Config]
+	Cfg *cfg.Modifier[*Config]
 }
 
 type Node struct {
 	Name string
 
-	Cfg *cfg.Modifier[Config]
+	Cfg *cfg.Modifier[*Config]
 }
 
-func (w *WM) Mutate(fn func() error) {
+func (w *WM) Mutate(fn func() error) error {
 	w.mu.Lock()
 	defer w.mu.Unlock()
 	if fn != nil {
-		fn()
+		return fn()
 	}
+	return nil
 }
 
-func (w *WM) View(fn func() error) {
+func (w *WM) View(fn func() error) error {
 	w.mu.RLock()
 	defer w.mu.RUnlock()
 	if fn != nil {
-		fn()
+		return fn()
 	}
+	return nil
 }
 
-func (w *WM) AddDesktop(name string) {
-
+func (w *WM) AddMonitor(name string) error {
+	return w.Mutate(func() error {
+		w.Monitors = append(w.Monitors, &Monitor{
+			Name: name,
+			Cfg:  cfg.NewModifier(&Config{}),
+		})
+		return nil
+	})
+}
+func (w *WM) AddDesktop(name string, monitorName string) error {
+	return w.Mutate(func() error {
+		var monitor *Monitor
+		for _, v := range w.Monitors {
+			if v.Name == monitorName {
+				monitor = v
+			}
+		}
+		if monitor == nil {
+			return fmt.Errorf("invalid descriptor found in '%s'", monitor)
+		}
+		w.Desktops = append(w.Desktops, &Desktop{
+			Name:    name,
+			Cfg:     cfg.NewModifier(&Config{}),
+			Monitor: monitor,
+		})
+		return nil
+	})
 }
 
 func NewWM() *WM {