// Package portrait builds 愈心解码 content from birth date (classic decode engine).
package portrait

import (
	"fmt"
	"time"
)

// Output is free summary + gated detail for a GrowthReport.
type Output struct {
	Summary map[string]any `json:"summary"`
	Detail  map[string]any `json:"detail"`
}

// Build generates 愈心解码 content (deterministic for a given birth date).
func Build(birth time.Time, displayName string) Output {
	y, m, d := birth.Date()
	tri := Calc(y, int(m), d)
	main := tri.O
	person := numberPeople[main]
	name := displayName
	if name == "" {
		name = "你"
	}
	oneLiner := firstSentence(person.Desc)
	if oneLiner == "" {
		oneLiner = person.Title
	}

	bz := getBazi(y, int(m), d, 12)
	pct := calc5E(bz)
	strong := strongestEl(pct)
	cst := constitutionByElement[strong]
	emo := emotionByElement[strong]

	dims := []map[string]any{
		{"key": "personality", "title": "性格特点", "teaser": oneLiner, "score": dimScore(main, 0)},
		{"key": "communication", "title": "沟通方式", "teaser": teaserCut(oneLiner, 28), "score": dimScore(main, 1)},
		{"key": "relation", "title": "关系模式", "teaser": "深度关系模式见完整分析", "score": dimScore(main, 2)},
		{"key": "career", "title": "事业节奏", "teaser": "适合方向见深度版", "score": dimScore(main, 3)},
		{"key": "emotion", "title": "情绪调节", "teaser": joinCN(emo.Strength, 3), "score": dimScore(main, 4)},
		{"key": "lifestyle", "title": "生活节奏", "teaser": "核心养护：养" + cst.Strong + " · 需呵护" + cst.Weak, "score": dimScore(main, 5)},
	}

	keywords := []string{fmt.Sprintf("%d号人", main), person.Elem + "行倾向", cst.Primary}
	if len(emo.Strength) > 0 {
		keywords = append(keywords, emo.Strength[0])
	}

	tip := todayTip(time.Now())
	missing, over := missAndOver(tri)

	summary := map[string]any{
		"title":          "愈心解码·基础",
		"main_number":    main,
		"person_title":   person.Title,
		"style_label":    person.Title,
		"style_badge":    fmt.Sprintf("%d号人", main),
		"headline":       fmt.Sprintf("%s是%d号人 · %s", name, main, person.Title),
		"keywords":       keywords,
		"one_liner":      oneLiner,
		"overview":       oneLiner,
		"life_tip":       emo.Advice,
		"today_practice": emo.Advice,
		// 模糊锁占位（非完整深文案，完整内容仅在 detail）
		"lock_teaser_number": "天赋优势与人生课题、适合方向与能量长文，解锁后查看。联合码按生命阶段分组解读。",
		"lock_teaser_wuxing": "体质特征、调养要点、易感倾向、食疗与作息节律，解锁后查看完整方案。",
		"pattern_key":        main,
		"pyramid":            tri.PyramidMap(),
		"wuxing":             WuxingBlock(birth),
		"today_tip":  tip,
		"dimensions": dims,
		"strengths_preview": []string{
			fmt.Sprintf("%d号人·%s", main, person.Title),
			cst.Primary,
		},
		"blind_spots_preview":     []string{"完整天赋优势、人生课题、联合码与体质深析见深度版。"},
		"disclaimer_constitution": "体质与调养内容为生活方式参考，非医疗建议。",
	}

	numberDeep := map[string]any{
		"talent":    person.Pos,
		"topic":     person.Neg,
		"direction": person.Job,
		"elem":      person.Elem,
		"desc":      person.Desc,
		"missing":   missing,
		"over":      over,
		"joints":    jointGroups(tri),
	}
	constitutionDeep := map[string]any{
		"desc":           cst.Desc,
		"body":           cst.Body,
		"tips":           cst.Tips,
		"risk":           cst.Diseases,
		"season_risk":    cst.SeasonRisk,
		"food":           cst.FoodTherapy,
		"rhythm":         cst.DailyRhythm,
		"primary":        cst.Primary,
		"secondary":      cst.Secondary,
		"emotion_risk":   emo.Risk,
		"emotion_advice": emo.Advice,
	}

	detail := map[string]any{
		"title":             "完整分析",
		"number_deep":       numberDeep,
		"constitution_deep": constitutionDeep,
		"sections": []map[string]any{
			section("天赋与课题", person.Desc, []string{"天赋优势：" + person.Pos, "人生课题：" + person.Neg, "适合方向：" + person.Job}),
			section("体质特征", cst.Body, []string{cst.Tips}),
			section("易感与季节", cst.Diseases, []string{cst.SeasonRisk}),
			section("食疗方向", cst.FoodTherapy, nil),
			section("作息节律", cst.DailyRhythm, nil),
			section("情绪调养", emo.Advice, emo.Risk),
		},
		"behavior_pattern": person.Desc,
		"relation_style":   person.Neg,
		"growth_direction": person.Pos,
		"strengths":        splitComma(person.Pos),
		"blind_spots":      splitComma(person.Neg),
		"growth_plan": []map[string]any{
			{"phase": "本周", "focus": emo.Advice},
			{"phase": "本月", "focus": cst.Tips},
			{"phase": "长期", "focus": "结合数字课题「" + person.Neg + "」与体质养护「养" + cst.Strong + "」，形成可持续的生活节奏。"},
		},
		"conversation_scripts": []string{
			"我想聊聊自己的节奏，不用急着给建议。",
			"当我压力大时，需要一点安静空间再继续聊。",
			"帮我一起看看，哪件事最值得这周聚焦。",
		},
		"daily_suggestions": []string{strAny(tip["yi"]), emo.Advice, "核心养护：养" + cst.Strong},
		"faq": []map[string]string{
			{"q": "数字性格是固定的吗？", "a": "主数提供稳定的自我探索框架，具体表现会随阶段与环境变化，可当作镜子而非标签。"},
			{"q": "五行体质能当看病依据吗？", "a": "不能。这里的体质与调养只是生活方式参考，不适请就医，勿自行当作治疗方案。"},
		},
	}
	return Output{Summary: summary, Detail: detail}
}

func section(title, body string, bullets []string) map[string]any {
	return map[string]any{"title": title, "body": body, "bullets": bullets}
}

func dimScore(main, salt int) int {
	// Stable pseudo-scores 62–92 for relation dimension compare.
	return 62 + (main*7+salt*11)%31
}

func teaserCut(s string, n int) string {
	r := []rune(s)
	if len(r) <= n {
		return s
	}
	return string(r[:n]) + "…"
}

func joinCN(parts []string, n int) string {
	if len(parts) == 0 {
		return ""
	}
	if len(parts) < n {
		n = len(parts)
	}
	out := parts[0]
	for i := 1; i < n; i++ {
		out += " · " + parts[i]
	}
	return out
}

func splitComma(s string) []string {
	if s == "" {
		return nil
	}
	// pos/neg use顿号
	parts := []string{}
	cur := ""
	for _, r := range s {
		if r == '、' || r == '，' || r == ',' {
			if cur != "" {
				parts = append(parts, cur)
				cur = ""
			}
			continue
		}
		cur += string(r)
	}
	if cur != "" {
		parts = append(parts, cur)
	}
	if len(parts) > 3 {
		return parts[:3]
	}
	return parts
}

func strAny(v any) string {
	if s, ok := v.(string); ok {
		return s
	}
	return ""
}