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tiennm99
c0231ceadf
/wordledaily sends a BotFather game card whose page plays one shared word per day, changing at 07:00 ICT. The server checks guesses, saves each player's board after every guess and keeps NYT-style stats. A win is reported with setGameScore, and in a group one live results message shows everyone's colour grids. /wordledaily_subscribe and /wordledaily_unsubscribe opt a chat or topic in to the 07:00 push: yesterday's recap, opening with the answer and the group's win streak, then today's card. The HTML5 game plumbing that noitu used is now shared in util/htmlgame, and the wordle word list and scoring live in wordle/wordlist.
50 lines
1.1 KiB
Go
50 lines
1.1 KiB
Go
package htmlgame
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import (
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"sync"
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"time"
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)
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// Limiter allows at most Per requests per key within any Window (a sliding
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// window). It is in-memory: a restart forgets it, which only resets the
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// window. Keys with no request in the last Window are pruned as it runs.
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type Limiter struct {
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Per int
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Window time.Duration
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mu sync.Mutex
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hits map[int64][]time.Time
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pruned time.Time
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}
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// Allow records a request for key at now and reports whether it is within
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// the limit. A refused request is not recorded.
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func (l *Limiter) Allow(key int64, now time.Time) bool {
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l.mu.Lock()
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defer l.mu.Unlock()
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if l.hits == nil {
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l.hits = map[int64][]time.Time{}
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}
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cutoff := now.Add(-l.Window)
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if now.Sub(l.pruned) >= l.Window {
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for k, ts := range l.hits {
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if len(ts) == 0 || !ts[len(ts)-1].After(cutoff) {
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delete(l.hits, k)
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}
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}
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l.pruned = now
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}
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recent := l.hits[key]
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i := 0
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for i < len(recent) && !recent[i].After(cutoff) {
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i++
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}
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recent = recent[i:]
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if len(recent) >= l.Per {
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l.hits[key] = recent
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return false
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}
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l.hits[key] = append(recent, now)
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return true
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}
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