27 lines
690 B
Go
27 lines
690 B
Go
package domain
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import "strings"
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// NormalizeLanguage maps FE / Accept-Language / preferred_language → template Language.
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// FE locales: zh-TW | en
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func NormalizeLanguage(raw string) Language {
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s := strings.ToLower(strings.TrimSpace(raw))
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if s == "" {
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return LangZhTW
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}
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// take first tag only (e.g. "en-US,en;q=0.9")
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if i := strings.IndexAny(s, ",;"); i >= 0 {
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s = strings.TrimSpace(s[:i])
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}
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s = strings.ReplaceAll(s, "_", "-")
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switch {
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case s == "en" || strings.HasPrefix(s, "en-"):
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return LangEnUS
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case s == "zh" || strings.HasPrefix(s, "zh-"):
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// zh-TW / zh-Hant / zh-CN → 目前模板只有繁中，統一 zh-tw
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return LangZhTW
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default:
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return LangZhTW
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}
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}
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