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Phase 5b of go-port-cloud-run plan. Port 14855-word dictionary (89 KB, byte-identical to JS source) and four wordle commands (/wordle, /wordle_new, /wordle_giveup, /wordle_stats). KV wire-format parity: GameState/Stats JSON match JS shape; *int64 LastResultAt for null-value compatibility. Two real bugs caught and fixed: (1) defaultRNG data race in handlers — switched to math/rand.Intn (mutex-protected package-level); (2) Get→mutate→Put logical race in groups — added per-subject sync.Mutex map to serialize access. TTL deferred (Firestore has no expirationTtl equiv — Phase 11 GC).
55 lines
1.6 KiB
Go
55 lines
1.6 KiB
Go
package wordle
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import "strings"
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// normalizeWord lowercases input and strips anything outside a-z. JS parity:
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// `String(input).toLowerCase().replace(/[^a-z]/g, "")`.
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func normalizeWord(input string) string {
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lower := strings.ToLower(input)
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out := make([]byte, 0, len(lower))
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for i := 0; i < len(lower); i++ {
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c := lower[i]
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if c >= 'a' && c <= 'z' {
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out = append(out, c)
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}
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}
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return string(out)
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}
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// rejectReason classifies why validateGuess returned not-ok. Values match the
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// JS source's discriminated-union strings so the user-facing reply mapping
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// (handlers.rejectReason) stays parallel.
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type rejectReason string
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const (
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reasonEmpty rejectReason = "empty"
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reasonLength rejectReason = "length"
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reasonUnknown rejectReason = "unknown"
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)
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// guessResult mirrors JS's `{ok: true, word} | {ok: false, reason, word}`.
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// Word is always populated (the normalized form), even on failure, so callers
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// can include it in error messages if desired.
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type guessResult struct {
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OK bool
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Word string
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Reason rejectReason
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}
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// validateGuess normalizes input then checks length + dictionary membership.
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//
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// Reasons in priority order: empty (post-normalize blank) > length > unknown.
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func validateGuess(dict map[string]struct{}, input string) guessResult {
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w := normalizeWord(input)
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if w == "" {
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return guessResult{OK: false, Word: w, Reason: reasonEmpty}
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}
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if len(w) != WordLength {
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return guessResult{OK: false, Word: w, Reason: reasonLength}
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}
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if _, ok := dict[w]; !ok {
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return guessResult{OK: false, Word: w, Reason: reasonUnknown}
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}
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return guessResult{OK: true, Word: w}
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}
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