WIP: stuff

cli/internal/apps/node.go

@@ -0,0 +1,118 @@
+package apps
+
+import (
+	"context"
+	"fmt"
+	"os"
+	"os/exec"
+	"sync"
+	"time"
+
+	"github.com/spotdemo4/trevstack/cli/internal/utils"
+)
+
+type Node struct {
+	App App
+	c   chan Msg
+	ctx context.Context
+	wg  *sync.WaitGroup
+
+	dir string
+
+	Cancel context.CancelFunc
+	Wait   func()
+}
+
+func NewNode(dir string, c chan Msg) *Node {
+
+	// Create new context
+	ctx, cancel := context.WithCancel(context.Background())
+
+	// Create wait group
+	wg := sync.WaitGroup{}
+
+	node := Node{
+		App: App{
+			Name:  "node",
+			Color: "#fab387",
+		},
+		c:   c,
+		ctx: ctx,
+		wg:  &wg,
+
+		dir: dir,
+
+		Cancel: cancel,
+		Wait:   wg.Wait,
+	}
+
+	// Start watching
+	go node.dev()
+
+	return &node
+}
+
+func (n *Node) msg(m Msg) {
+	m.Time = time.Now()
+	m.App = &n.App
+	n.c <- m
+}
+
+func (n *Node) dev() {
+	n.wg.Add(1)
+	defer n.wg.Done()
+
+	// Create cmd
+	cmd := exec.Command("npm", "run", "dev")
+	cmd.Dir = n.dir
+
+	// Stop cmd on exit
+	n.wg.Add(1)
+	go func() {
+		defer n.wg.Done()
+		<-n.ctx.Done()
+
+		if err := cmd.Process.Signal(os.Interrupt); err != nil {
+			cmd.Process.Kill() // If the process is not responding to the interrupt signal, kill it
+		}
+	}()
+
+	// Start cmd
+	out, err := utils.Run(cmd)
+	if err != nil {
+		n.msg(Msg{
+			Text:    err.Error(),
+			Success: utils.BoolPointer(false),
+		})
+		return
+	}
+
+	// Watch for output
+	for line := range out {
+		switch line := line.(type) {
+		case utils.Stdout:
+			n.msg(Msg{
+				Text: string(line),
+			})
+
+		case utils.Stderr:
+			n.msg(Msg{
+				Text:    string(line),
+				Success: utils.BoolPointer(false),
+			})
+
+		case utils.ExitCode:
+			if line == 0 {
+				n.msg(Msg{
+					Text:    "Node stopped",
+					Success: utils.BoolPointer(true),
+				})
+			} else {
+				n.msg(Msg{
+					Text:    fmt.Sprintf("Node failed with exit code %d", out),
+					Success: utils.BoolPointer(false),
+				})
+			}
+		}
+	}
+}