Overview

mizu new myapp --template live
cd myapp
go mod tidy
mizu dev

myapp/
├── cmd/server/main.go        # Entry point
├── app/server/
│   ├── app.go                # Application setup
│   └── routes.go             # Routes
├── handler/
│   ├── home.go               # Home page
│   └── counter.go            # Counter live view
├── assets/                   # Static files
├── views/                    # Templates
└── go.mod

// handler/counter.go
func Counter(live *live.Server) mizu.Handler {
    return func(c *mizu.Ctx) error {
        return c.Render("pages/counter", nil)
    }
}

// WebSocket handler
func (h *CounterHandler) OnMessage(ctx context.Context, s *live.Session, topic string, data []byte) {
    switch topic {
    case "increment":
        h.count++
    case "decrement":
        h.count--
    }

    // Re-render and send to client
    html := h.render()
    s.Send("update", html)
}

// Send update to one session
session.Send("update", html)

// Broadcast to all sessions
server.Publish("counter", "update", html)

func OnConnect(ctx context.Context, s *live.Session) error {
    s.Set("username", "anonymous")
    return nil
}

session.Subscribe("chat:room1")
server.Publish("chat:room1", "message", data)