twitch-bot/plugins/timerstore.go

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package plugins
import (
"crypto/sha256"
"fmt"
"strings"
"time"
)
type TimerType uint8
const (
TimerTypePermit TimerType = iota
TimerTypeCooldown
)
type (
TimerEntry struct {
Kind TimerType `json:"kind"`
Time time.Time `json:"time"`
}
TimerStore interface {
AddCooldown(tt TimerType, limiter, ruleID string, expiry time.Time)
InCooldown(tt TimerType, limiter, ruleID string) bool
AddPermit(channel, username string)
HasPermit(channel, username string) bool
}
testTimerStore struct {
timers map[string]time.Time
}
)
func newTestTimerStore() *testTimerStore { return &testTimerStore{timers: map[string]time.Time{}} }
// Cooldown timer
func (t *testTimerStore) AddCooldown(tt TimerType, limiter, ruleID string, expiry time.Time) {
t.timers[t.getCooldownTimerKey(tt, limiter, ruleID)] = expiry
}
func (t *testTimerStore) InCooldown(tt TimerType, limiter, ruleID string) bool {
return t.timers[t.getCooldownTimerKey(tt, limiter, ruleID)].After(time.Now())
}
func (testTimerStore) getCooldownTimerKey(tt TimerType, limiter, ruleID string) string {
h := sha256.New()
fmt.Fprintf(h, "%d:%s:%s", tt, limiter, ruleID)
return fmt.Sprintf("sha256:%x", h.Sum(nil))
}
// Permit timer
func (t *testTimerStore) AddPermit(channel, username string) {
t.timers[t.getPermitTimerKey(channel, username)] = time.Now().Add(time.Minute)
}
func (t *testTimerStore) HasPermit(channel, username string) bool {
return t.timers[t.getPermitTimerKey(channel, username)].After(time.Now())
}
func (testTimerStore) getPermitTimerKey(channel, username string) string {
h := sha256.New()
fmt.Fprintf(h, "%d:%s:%s", TimerTypePermit, channel, strings.ToLower(strings.TrimLeft(username, "@")))
return fmt.Sprintf("sha256:%x", h.Sum(nil))
}