// Package star builds 星座 reports (natal chart · fortune · deep copy).
package star

import (
	"fmt"
	"time"

	"github.com/yuxingu/digital-psychology/apps/api/internal/star/fortune"
	"github.com/yuxingu/digital-psychology/apps/api/internal/star/natal"
)

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

// BuildOpts configures report generation.
type BuildOpts struct {
	Birth      time.Time
	BirthTime  *string
	BirthPlace *string
	Name       string
	AsOf       time.Time // fortune anchor; zero = now
}

// Build generates StarProfile from birth date (compat wrapper).
func Build(birth time.Time, birthTime *string, displayName string) (Output, error) {
	return BuildWith(BuildOpts{Birth: birth, BirthTime: birthTime, Name: displayName})
}

// BuildWith generates a full star report.
func BuildWith(opts BuildOpts) (Output, error) {
	name := opts.Name
	if name == "" {
		name = "你"
	}
	chart, err := natal.Compute(opts.Birth, opts.BirthTime, opts.BirthPlace)
	if err != nil {
		return Output{}, err
	}
	sun := chart.Sun
	moon := chart.Moon
	rise := chart.Rise
	pack := packs[sun.SignKey]
	if pack.Label == "" {
		pack = defaultPack(signMeta{Key: sun.SignKey, Label: sun.Sign, Element: sun.Element, Modality: sun.Modality})
	}
	moonPack := packs[moon.SignKey]
	risePack := packs[rise.SignKey]

	signCards := []map[string]any{
		signCard("sun", "太阳星座", sun, pack.SunTeaser, pack.Keywords),
		signCard("moon", "月亮星座", moon, fmt.Sprintf("情绪底色更偏「%s」", moon.Sign), moonPack.Keywords),
		signCard("rise", "上升星座", rise, fmt.Sprintf("第一印象更偏「%s」", rise.Sign), risePack.Keywords),
	}

	dims := []map[string]any{
		{"key": "sun", "title": "太阳风格", "teaser": pack.SunTeaser, "score": pack.Scores["sun"]},
		{"key": "moon", "title": "月亮节奏", "teaser": fmt.Sprintf("情绪底色更偏「%s」", moon.Sign), "score": pack.Scores["moon"]},
		{"key": "rise", "title": "上升表达", "teaser": fmt.Sprintf("第一印象更偏「%s」", rise.Sign), "score": pack.Scores["rise"]},
		{"key": "relation", "title": "关系互动", "teaser": pack.RelationTeaser, "score": pack.Scores["relation"]},
		{"key": "career", "title": "事业节奏", "teaser": pack.CareerTeaser, "score": pack.Scores["career"]},
		{"key": "growth", "title": "成长方向", "teaser": pack.GrowthTeaser, "score": pack.Scores["growth"]},
	}

	asOf := opts.AsOf
	if asOf.IsZero() {
		asOf = time.Now()
	}
	fort := fortune.Build(chart, asOf)
	daily := fort.Daily

	planetsOut := make([]map[string]any, 0, len(chart.Planets))
	for _, p := range chart.Planets {
		planetsOut = append(planetsOut, map[string]any{
			"key": p.Key, "title": p.Title, "sign": p.Sign, "sign_key": p.SignKey,
			"degree": fmt.Sprintf("%.1f°", p.Degree), "house": p.House,
			"element": p.Element, "modality": p.Modality, "lon": p.Lon,
		})
	}
	housesOut := make([]map[string]any, 0, len(chart.Houses))
	for _, h := range chart.Houses {
		// Whole-sign house cusp ≈ asc sign start + (n-1)*30
		cusp := float64((signIndexOf(h.Key)) * 30)
		housesOut = append(housesOut, map[string]any{
			"num": h.Num, "sign": h.Sign, "sign_key": h.Key, "cusp_lon": cusp,
		})
	}

	aspects := natal.Aspects(chart)
	aspectMaps := natal.AspectsAsMaps(aspects)
	previewN := min(4, len(aspectMaps))
	aspectPreview := aspectMaps[:previewN]

	summary := map[string]any{
		"title":       "星座·基础",
		"style_label": pack.Label,
		"headline":    fmt.Sprintf("%s的星座更偏「%s」", name, pack.Label),
		"one_liner":   pack.OneLiner,
		"overview":    fmt.Sprintf("%s%s（太阳：%s；月亮：%s；上升：%s）。", name, pack.Overview, sun.Sign, moon.Sign, rise.Sign),
		"life_tip":    pack.LifeTip,
		"keywords":    pack.Keywords,
		"dimensions":  dims,
		"sign_cards":  signCards,
		"sun_sign":    sun.Sign,
		"moon_sign":   moon.Sign,
		"rise_sign":   rise.Sign,
		"chart": map[string]any{
			"note": chart.Note, "place": chart.PlaceLabel,
			"has_time": chart.HasTime, "has_place": chart.HasPlace,
			"lat": chart.Lat, "lng": chart.Lng,
			"asc_lon": rise.Lon, "houses": housesOut,
		},
		"planets":         planetsOut,
		"aspects_preview": aspectPreview,
		"fortune":         fort.AsMap(),
		"transits":        fort.AsMap()["transits"],
		"daily_soft": map[string]any{
			"title": daily.Title, "focus": daily.Focus, "tip": daily.Tip,
			"energy": daily.Score, "note": daily.Label, "score": daily.Score, "label": daily.Label,
		},
		"strengths_preview":   pack.Strengths[:min(3, len(pack.Strengths))],
		"blind_spots_preview": []string{"完整相位与年运详解见深度版。"},
		"interaction_tags": []string{
			fmt.Sprintf("太阳·%s", sun.Sign),
			fmt.Sprintf("月亮·%s", moon.Sign),
			fmt.Sprintf("上升·%s", rise.Sign),
			pack.Label,
		},
	}

	aspectBullets := make([]string, 0, min(8, len(aspects)))
	for i, a := range aspects {
		if i >= 8 {
			break
		}
		aspectBullets = append(aspectBullets, a.Label)
	}

	detail := map[string]any{
		"title":   "星座·完整分析",
		"aspects": aspectMaps,
		"sections": []map[string]any{
			section("太阳星座 · "+sun.Sign, pack.SunDeep, pack.SunBullets),
			section("月亮星座 · "+moon.Sign, fmt.Sprintf("情绪底色带有「%s」特质：%s", moon.Sign, moonPack.MoonDeep), moonPack.MoonBullets),
			section("上升星座 · "+rise.Sign, fmt.Sprintf("对外第一印象偏「%s」：%s", rise.Sign, risePack.RiseDeep), risePack.RiseBullets),
			section("行星相位要点", "主要相位帮助理解行动、情感与责任节奏之间的张力与互补。", aspectBullets),
			section("行星落座", "落座与宫位是日常节奏的参照。", planetBullets(chart)),
			section("年运详解", fort.Yearly.Tip+" "+fort.Yearly.Caution, []string{
				fmt.Sprintf("综合分 %d（%s）", fort.Yearly.Score, fort.Yearly.Label),
				fmt.Sprintf("感情 %d · 事业 %d · 财务 %d · 心情 %d", fort.Yearly.Dims["love"], fort.Yearly.Dims["career"], fort.Yearly.Dims["money"], fort.Yearly.Dims["mood"]),
				fort.Yearly.Lucky,
			}),
			section("一生运势", fort.Lifetime.Tip, []string{fort.Lifetime.Caution, fort.Lifetime.Lucky}),
			section("关系互动", pack.RelationDeep, pack.RelationBullets),
			section("事业与学习节奏", pack.CareerDeep, pack.CareerBullets),
			section("成长方向", pack.GrowthDeep, pack.GrowthBullets),
		},
		"strengths":   pack.Strengths,
		"blind_spots": pack.BlindSpots,
		"growth_plan": []map[string]any{
			{"phase": "本周", "focus": pack.PlanWeek},
			{"phase": "本月", "focus": pack.PlanMonth},
			{"phase": "长期", "focus": pack.PlanLong},
		},
		"conversation_scripts": pack.Scripts,
		"faq":                  pack.FAQ,
		"behavior_pattern":     pack.SunDeep,
		"relation_style":       pack.RelationDeep,
		"growth_direction":     pack.GrowthDeep,
		"fortune_detail":       fort.AsMap(),
	}
	return Output{Summary: summary, Detail: detail}, nil
}

func signIndexOf(key string) int {
	for i, s := range []string{
		"aries", "taurus", "gemini", "cancer", "leo", "virgo",
		"libra", "scorpio", "sagittarius", "capricorn", "aquarius", "pisces",
	} {
		if s == key {
			return i
		}
	}
	return 0
}

func planetBullets(chart natal.Chart) []string {
	out := make([]string, 0, 6)
	for _, key := range []string{"mercury", "venus", "mars", "jupiter", "saturn"} {
		for _, p := range chart.Planets {
			if p.Key == key {
				out = append(out, fmt.Sprintf("%s在%s第%d宫", p.Title, p.Sign, p.House))
				break
			}
		}
	}
	return out
}

func signCard(key, title string, b natal.Body, teaser string, keywords []string) map[string]any {
	ks := keywords
	if len(ks) > 3 {
		ks = ks[:3]
	}
	return map[string]any{
		"key": key, "title": title, "label": b.Sign,
		"element": b.Element, "modality": b.Modality,
		"teaser": teaser, "keywords": ks,
	}
}

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

func min(a, b int) int {
	if a < b {
		return a
	}
	return b
}

// SignLabels returns sun/moon/rise labels (uses natal engine).
func SignLabels(birth time.Time, birthTime *string) (sun, moon, rise string) {
	return SignLabelsPlace(birth, birthTime, nil)
}

// SignLabelsPlace includes birth place for rising accuracy.
func SignLabelsPlace(birth time.Time, birthTime, place *string) (sun, moon, rise string) {
	c, err := natal.Compute(birth, birthTime, place)
	if err != nil {
		return "", "", ""
	}
	return c.Sun.Sign, c.Moon.Sign, c.Rise.Sign
}

// NatalChart exposes chart for relation/synastry.
func NatalChart(birth time.Time, birthTime, place *string) (natal.Chart, error) {
	return natal.Compute(birth, birthTime, place)
}

type signMeta struct {
	Key, Label, Element, Modality string
}

type pack struct {
	Label, OneLiner, Overview, LifeTip                                                  string
	Keywords                                                                            []string
	Scores                                                                              map[string]int
	SunTeaser, RelationTeaser, CareerTeaser, GrowthTeaser                               string
	SunDeep, MoonDeep, RiseDeep, RelationDeep, CareerDeep, GrowthDeep                   string
	SunBullets, MoonBullets, RiseBullets, RelationBullets, CareerBullets, GrowthBullets []string
	Strengths, BlindSpots, Scripts                                                      []string
	PlanWeek, PlanMonth, PlanLong                                                       string
	FAQ                                                                                 []map[string]string
}

var packs = map[string]pack{}

func init() {
	for _, s := range []signMeta{
		{"aries", "白羊", "火", "开创"}, {"taurus", "金牛", "土", "固定"}, {"gemini", "双子", "风", "变动"},
		{"cancer", "巨蟹", "水", "开创"}, {"leo", "狮子", "火", "固定"}, {"virgo", "处女", "土", "变动"},
		{"libra", "天秤", "风", "开创"}, {"scorpio", "天蝎", "水", "固定"}, {"sagittarius", "射手", "火", "变动"},
		{"capricorn", "摩羯", "土", "开创"}, {"aquarius", "水瓶", "风", "固定"}, {"pisces", "双鱼", "水", "变动"},
	} {
		packs[s.Key] = defaultPack(s)
	}
	packs["aries"] = enrich(packs["aries"], "开创行动者", "先动起来，再在行动里想清楚。",
		"你容易被新目标点燃，讨厌拖沓。优势是启动快；需要留意的是收尾与倾听。")
	packs["taurus"] = enrich(packs["taurus"], "稳健沉淀者", "你重视踏实与感官舒适，变化太快会消耗你。",
		"你擅长把事情做稳做久。关系与工作里都需要可预期的节奏。")
	packs["gemini"] = enrich(packs["gemini"], "灵活连接者", "你靠好奇与对话充电，也容易分心。",
		"信息与交流是你的养分。把想法收成一个可交付的小闭环，会更有成就感。")
	packs["cancer"] = enrich(packs["cancer"], "细腻守护者", "你对情绪与归属很敏感，安全比热闹更重要。",
		"你擅长照顾氛围与关系。记得也把自己的需要说清楚，而不是只默默撑着。")
	packs["leo"] = enrich(packs["leo"], "热烈表达者", "你需要被看见，也愿意照亮别人。",
		"热情与表达是你的名片。把认可需求说成具体请求，关系会更顺。")
	packs["virgo"] = enrich(packs["virgo"], "细致完善者", "你看见细节与改进空间，也容易自我要求过高。",
		"把「足够好」纳入标准，你会轻松很多，交付也会更快。")
	packs["libra"] = enrich(packs["libra"], "平衡协调者", "你追求公平与和谐，有时会为难自己。",
		"协调是天赋。重要决定里请给自己一票，而不只是各方折中。")
	packs["scorpio"] = enrich(packs["scorpio"], "深潜洞察者", "你看重真诚与深度，讨厌浮于表面。",
		"信任慢、一旦建立则很深。练习用语言同步感受，减少猜疑消耗。")
	packs["sagittarius"] = enrich(packs["sagittarius"], "开阔探索者", "你需要视野与意义，讨厌被框死。",
		"探索欲强。给自由一点结构，热情才能变成持续作品。")
	packs["capricorn"] = enrich(packs["capricorn"], "负责攀登者", "你看长远目标，愿意为结果负责。",
		"担当是优势。学会求助与休息，攀登才可持续。")
	packs["aquarius"] = enrich(packs["aquarius"], "独特思考者", "你重视独立与新意，也需要被理解。",
		"独特视角是礼物。把想法翻译成别人跟得上的一步行动。")
	packs["pisces"] = enrich(packs["pisces"], "共感想象者", "你感受力强，边界容易被情绪浪潮冲开。",
		"共情是天赋。区分「理解」与「承包」，你会更稳。")
}

func defaultPack(s signMeta) pack {
	return pack{
		Label: s.Label + "风格探索者", OneLiner: "用星座认识自己的节奏与运势起伏。",
		Overview:  "在星座框架里，你的表达与需求有独特侧重。",
		LifeTip:   "本周选一件小事完整做完，并告诉亲近的人你的真实需要。",
		Keywords:  []string{s.Label, s.Element + "象", s.Modality, "星座"},
		Scores:    map[string]int{"sun": 78, "moon": 70, "rise": 72, "relation": 74, "career": 73, "growth": 75},
		SunTeaser: "核心驱动力清晰，行动有自己的节拍。", RelationTeaser: "关系里需要被理解与尊重节奏。",
		CareerTeaser: "适合发挥你风格优势的场景。", GrowthTeaser: "下一步是看见盲区并小步调整。",
		SunDeep:         "太阳星座描述你的核心动机与自我表达。",
		MoonDeep:        "月亮星座指向情绪调节与安全感来源。",
		RiseDeep:        "上升星座影响别人对你的第一印象。",
		RelationDeep:    "关系中把需求说具体，比期待对方「应该懂」更有效。",
		CareerDeep:      "工作上优先发挥你的风格优势，并用小里程碑对抗拖延。",
		GrowthDeep:      "成长是认识模式后做可验证的小调整。",
		SunBullets:      []string{"核心动机可被命名", "表达有风格偏好", "适合自我探索"},
		MoonBullets:     []string{"情绪需要出口", "安全感来源因人而异", "独处或连接可充电"},
		RiseBullets:     []string{"第一印象可调节", "外显≠全部自我", "可练习温和表达"},
		RelationBullets: []string{"需求具体化", "尊重双方节奏", "冲突先复述再方案"},
		CareerBullets:   []string{"发挥风格优势", "小步交付", "复盘节奏"},
		GrowthBullets:   []string{"看见模式", "小步验证", "结合运势调整"},
		Strengths:       []string{"风格清晰", "可探索性强", "利于自我对话"},
		BlindSpots:      []string{"标签固化", "忽略情境差异", "过度解读"},
		Scripts:         []string{"我想先说清我的节奏，再听你的。", "我不是冷淡，我需要一点整理时间。", "我们共同目标是……，下一步只定一件事。"},
		PlanWeek:        "用三句话写下：我的优势 / 我的消耗点 / 我本周要试的一小步。",
		PlanMonth:       "在关系或工作中练习两次「先复述对方，再提需要」。",
		PlanLong:        "建立个人节奏手册：什么充电、什么耗电、如何请求支持。",
		FAQ: []map[string]string{
			{"q": "运势是预测吗？", "a": "运势分与建议帮助你调整节奏与决策，请结合现实判断，勿作唯一依据。"},
			{"q": "星盘准吗？", "a": "出生时与出生地越完整，上升与宫位越贴近；算法为可复现近似星历。"},
		},
	}
}

func enrich(base pack, label, one, overview string) pack {
	base.Label = label
	base.OneLiner = one
	base.Overview = overview
	base.Keywords = []string{label, "星座", "运势"}
	return base
}