Jyotisha/frontend/src/lib/consult-packet-warm.ts

import { after } from "next/server";

/**
 * After a chart is saved, ask the engine to cache today's full-data packet.
 * The save response does not wait for that build (TASK fix F5).
 */

type WarmDeps = {
  after: (task: () => Promise<void> | void) => void;
  fetch: typeof fetch;
  apiBase?: string;
};

function asNumber(value: unknown): number | null {
  if (typeof value === "number" && Number.isFinite(value)) return value;
  if (typeof value === "string" && value.trim() && Number.isFinite(Number(value))) return Number(value);
  return null;
}

export function consultWarmBodyFromColumns(columns: Record<string, unknown> | null | undefined): Record<string, unknown> | null {
  if (!columns) return null;
  const date = typeof columns.birth_date === "string" ? columns.birth_date : "";
  const time = typeof columns.reported_birth_time === "string" ? columns.reported_birth_time : "";
  const lat = asNumber(columns.latitude);
  const lon = asNumber(columns.longitude);
  const tz = asNumber(columns.timezone_offset);
  const match = /^(\d{4})-(\d{2})-(\d{2})$/.exec(date);
  const clock = /^(\d{1,2}):(\d{2})/.exec(time);
  if (!match || !clock || lat === null || lon === null || tz === null) return null;
  return {
    year: Number(match[1]),
    month: Number(match[2]),
    day: Number(match[3]),
    hour: Number(clock[1]),
    minute: Number(clock[2]),
    second: 0,
    lat,
    lon,
    tz,
    ayanamsa: typeof columns.ayanamsa === "string" && columns.ayanamsa ? columns.ayanamsa : "lahiri",
    node_mode: "mean",
    consult_card_warm_only: true,
  };
}

export function scheduleConsultPacketWarm(
  columns: Record<string, unknown> | null | undefined,
  deps: WarmDeps = {
    after,
    fetch,
    apiBase: process.env.JYOTISH_API_BASE ?? "http://127.0.0.1:5200",
  },
): boolean {
  const body = consultWarmBodyFromColumns(columns);
  if (!body) return false;
  const apiBase = deps.apiBase ?? "http://127.0.0.1:5200";
  // Warm is best effort. `after` throws outside a request scope; the save has
  // already been written by then, so a scheduling failure must not turn it
  // into a 500 (BUG-1305).
  try {
    deps.after(() => {
      return deps.fetch(`${apiBase}/api/consultation_workflow`, {
        method: "POST",
        headers: { "content-type": "application/json" },
        body: JSON.stringify(body),
      }).then(() => undefined).catch(() => undefined);
    });
  } catch {
    return false;
  }
  return true;
}