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tiennm99
cf620a257e
Correct comments that described the retired webhook transport, a removed /cron route, the old KV store and wrapper types, and behaviour that has since changed; drop plan and review labels; reword two startup log lines that overstated or misnamed what they report.
27 lines
923 B
Go
27 lines
923 B
Go
package wordle
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import (
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"errors"
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"math/rand"
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)
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// errEmptyWordList is returned by pickRandom when the dictionary is empty.
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// startFresh propagates it so the handler fails instead of saving a round
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// with no answer.
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var errEmptyWordList = errors.New("wordle: word list is empty")
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// pickRandom returns a uniformly random word. rng allows tests to inject a deterministic source. When rng is nil we fall
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// through to math/rand's package-level Intn, which IS goroutine-safe via an
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// internal mutex on the global Source — important because the bot dispatcher
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// runs each Telegram update in its own goroutine and concurrent /wordle_new
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// calls would otherwise race on a shared *rand.Rand.
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func pickRandom(words []string, rng *rand.Rand) (string, error) {
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if len(words) == 0 {
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return "", errEmptyWordList
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}
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if rng != nil {
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return words[rng.Intn(len(words))], nil
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}
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return words[rand.Intn(len(words))], nil
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}
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