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

import (
	"fmt"
	"time"

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

// 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 // period outlook 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 := outlook.Build(chart, asOf)
	daily := fort.Daily
	fortMap := fort.AsMap()

	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,
		"outlook":         fortMap,
		"transits":        fortMap["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.Boost,
			}),
			section("一生运势", fort.Lifetime.Tip, []string{fort.Lifetime.Caution, fort.Lifetime.Boost}),
			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,
		"outlook_detail":       fortMap,
	}
	return Output{Summary: summary, Detail: detail}, nil
}