// Package scale holds exploration-test scoring helpers.
package scale

// ScoreMajority picks the most frequent answer key and maps to a label set.
func ScoreMajority(answers map[string]string, labels map[string]string, defaultLabel string) (styleKey, label string) {
	counts := map[string]int{}
	for _, v := range answers {
		counts[v]++
	}
	best, bestN := "", -1
	for k, n := range counts {
		if n > bestN {
			best, bestN = k, n
		}
	}
	if best == "" {
		return "", defaultLabel
	}
	label = labels[best]
	if label == "" {
		label = defaultLabel
	}
	return best, label
}

// CommunicationLabels for communication-style scale.
func CommunicationLabels() map[string]string {
	return map[string]string{
		"A": "理性澄清型",
		"B": "感受连接型",
		"C": "节奏尊重型",
	}
}

// EmotionLabels for emotion-pattern scale.
func EmotionLabels() map[string]string {
	return map[string]string{
		"A": "觉察表达型",
		"B": "安抚稳定型",
		"C": "行动调节型",
	}
}

// ScoreMBTI tallies E/I · S/N · T/F · J/P and returns a 4-letter type code + Chinese label.
func ScoreMBTI(answers map[string]string) (typeCode, label string) {
	count := func(a, b string) (na, nb int) {
		for _, v := range answers {
			switch v {
			case a:
				na++
			case b:
				nb++
			}
		}
		return
	}
	pick := func(a, b string, na, nb int) string {
		if nb > na {
			return b
		}
		return a
	}
	e, i := count("E", "I")
	s, n := count("S", "N")
	t, f := count("T", "F")
	j, p := count("J", "P")
	code := pick("E", "I", e, i) + pick("S", "N", s, n) + pick("T", "F", t, f) + pick("J", "P", j, p)
	return code, MBTILabel(code)
}

// MBTILabel maps 4-letter exploration code to a lexicon-safe Chinese label.
func MBTILabel(code string) string {
	if l, ok := mbtiLabels[code]; ok {
		return l
	}
	return "平衡探索型"
}

var mbtiLabels = map[string]string{
	"INTJ": "战略建构者", "INTP": "概念探路者", "ENTJ": "目标推动者", "ENTP": "灵感挑战者",
	"INFJ": "愿景洞察者", "INFP": "价值守护者", "ENFJ": "共鸣召集者", "ENFP": "热情启发者",
	"ISTJ": "稳健执行者", "ISFJ": "细致守护者", "ESTJ": "秩序统筹者", "ESFJ": "温暖协调者",
	"ISTP": "务实拆解者", "ISFP": "感受体验者", "ESTP": "当下行动者", "ESFP": "活力分享者",
}