64 lines
1.7 KiB
Go
64 lines
1.7 KiB
Go
package domain
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import "strings"
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const (
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SuggestUsageInclude = "include"
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SuggestUsageExclude = "exclude"
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// 建議數量上限：清單要能一眼看完並逐條決定，不是丟一大串讓人放棄。
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MaxSuggestions = 20
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DefaultSuggestions = 8
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)
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/*
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WatchTermSuggestion 是一則關鍵字建議。
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Reason 是必填的：使用者要逐條決定採不採用，看不到「為什麼建議這個詞」就只能全採或全不採，
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那這個功能就退化成一個猜測產生器。
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*/
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type WatchTermSuggestion struct {
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Term string `json:"term"`
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Reason string `json:"reason"`
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Usage string `json:"usage"`
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}
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func NormalizeSuggestUsage(s string) string {
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if strings.EqualFold(strings.TrimSpace(s), SuggestUsageExclude) {
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return SuggestUsageExclude
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}
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return SuggestUsageInclude
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}
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/*
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CleanSuggestions 收掉空白與重複，丟掉沒有理由的項目，並套用數量上限。
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沒有理由的項目直接丟：補一句「AI 建議」等於假裝有理由，比少一則更糟。
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*/
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func CleanSuggestions(in []WatchTermSuggestion, limit int) []WatchTermSuggestion {
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if limit <= 0 || limit > MaxSuggestions {
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limit = MaxSuggestions
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}
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out := make([]WatchTermSuggestion, 0, len(in))
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seen := map[string]bool{}
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for _, s := range in {
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term := strings.ToLower(strings.Join(strings.Fields(strings.ReplaceAll(s.Term, "\u3000", " ")), " "))
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reason := strings.TrimSpace(s.Reason)
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if term == "" || reason == "" {
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continue
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}
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if len([]rune(term)) < MinTermLen || len([]rune(term)) > MaxTermLen {
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continue
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}
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if seen[term] {
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continue
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}
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seen[term] = true
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out = append(out, WatchTermSuggestion{Term: term, Reason: reason, Usage: NormalizeSuggestUsage(s.Usage)})
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if len(out) >= limit {
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break
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}
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}
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return out
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}
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