Compute synastry from chart library profiles

2026-07-17 17:27:11 +08:00
parent 05e747f84e
commit a6aa84e905
3 changed files with 129 additions and 3 deletions
@@ -0,0 +1,85 @@
+import { NextResponse } from "next/server";
+import { chinaLocations } from "@/data/china-locations";
+
+type Profile = {
+  name?: string;
+  date?: string;
+  time?: string;
+  countryCode?: "CN";
+  provinceCode?: string;
+  cityCode?: string;
+  districtCode?: string;
+};
+
+const apiBase = process.env.JYOTISH_API_BASE ?? "http://127.0.0.1:5200";
+const china = chinaLocations.country;
+
+function birthPayload(profile: Profile) {
+  const [year, month, day] = String(profile.date || "").split("-").map(Number);
+  const [hour, minute] = String(profile.time || "").split(":").map(Number);
+  const province = china.provinces.find((item) => item.code === profile.provinceCode);
+  const city = province?.cities.find((item) => item.code === profile.cityCode);
+  const district = city?.districts.find((item) => item.code === profile.districtCode);
+  const location = district ?? city;
+  if (![year, month, day, hour, minute].every(Number.isFinite) || !location) {
+    throw new Error("birth_profile_incomplete");
+  }
+  return {
+    year, month, day, hour, minute,
+    second: 0,
+    lat: location.center[1],
+    lon: location.center[0],
+    tz: china.timezone,
+  };
+}
+
+function moonLongitude(chart: Record<string, unknown>) {
+  const planets = chart.planets && typeof chart.planets === "object" ? chart.planets as Record<string, unknown> : {};
+  const moon = planets.Moon && typeof planets.Moon === "object" ? planets.Moon as Record<string, unknown> : {};
+  const value = moon.lon ?? moon.longitude ?? moon.degree;
+  const numeric = Number(value);
+  if (!Number.isFinite(numeric)) throw new Error("moon_longitude_missing");
+  return numeric;
+}
+
+async function postPython(path: string, body: unknown) {
+  const response = await fetch(`${apiBase}${path}`, {
+    method: "POST",
+    headers: { "content-type": "application/json" },
+    body: JSON.stringify(body),
+    signal: AbortSignal.timeout(45_000),
+  });
+  const data = await response.json().catch(() => null);
+  if (!response.ok || !data || typeof data !== "object") {
+    throw new Error(`jyotish_api_${response.status}`);
+  }
+  return data as Record<string, unknown>;
+}
+
+export async function POST(request: Request) {
+  try {
+    const body = await request.json().catch(() => null) as { selfProfile?: Profile; partnerProfile?: Profile } | null;
+    if (!body?.selfProfile || !body.partnerProfile) {
+      return NextResponse.json({ error: "请提供双方星盘资料" }, { status: 400 });
+    }
+    const selfChart = await postPython("/api/chart", birthPayload(body.selfProfile));
+    const partnerChart = await postPython("/api/chart", birthPayload(body.partnerProfile));
+    const synastry = await postPython("/api/synastry", {
+      male_moon: moonLongitude(selfChart),
+      female_moon: moonLongitude(partnerChart),
+    });
+    return NextResponse.json({
+      status: "ok",
+      method: "ashtakoot_from_computed_moon",
+      selfChart: { moon: moonLongitude(selfChart) },
+      partnerChart: { moon: moonLongitude(partnerChart) },
+      synastry,
+    });
+  } catch (error) {
+    return NextResponse.json({
+      status: "blocked",
+      error: error instanceof Error ? error.message : "synastry_unavailable",
+      message: "合盘计算暂时不可用；可先保留合盘问题草稿。",
+    }, { status: 503 });
+  }
+}