digital-psychology/apps/api/internal/star/helpers.go

package star

import (
	"fmt"
	"time"

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

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)
}