package main

import "sync"

// tapNotifyCtl tracks which slaves have tap notify enabled (mirrors firmware / dashboard).
type tapNotifyCtl struct {
	mu    sync.Mutex
	flags map[uint32]tapNotifyFlags
}

type tapNotifyFlags struct {
	single    bool
	doubleTap bool
	triple    bool
}

func newTapNotifyCtl() *tapNotifyCtl {
	return &tapNotifyCtl{flags: make(map[uint32]tapNotifyFlags)}
}

func (c *tapNotifyCtl) Set(clientID uint32, single, doubleTap, triple bool) {
	c.mu.Lock()
	defer c.mu.Unlock()
	if !single && !doubleTap && !triple {
		delete(c.flags, clientID)
		return
	}
	c.flags[clientID] = tapNotifyFlags{single: single, doubleTap: doubleTap, triple: triple}
}

func (c *tapNotifyCtl) Any() bool {
	c.mu.Lock()
	defer c.mu.Unlock()
	return len(c.flags) > 0
}

func (c *tapNotifyCtl) SyncFromClients(clients []ClientView) {
	c.mu.Lock()
	defer c.mu.Unlock()
	c.flags = make(map[uint32]tapNotifyFlags)
	for _, cl := range clients {
		if cl.TapNotifySingle || cl.TapNotifyDouble || cl.TapNotifyTriple {
			c.flags[cl.ID] = tapNotifyFlags{
				single:    cl.TapNotifySingle,
				doubleTap: cl.TapNotifyDouble,
				triple:    cl.TapNotifyTriple,
			}
		}
	}
}