@nrweb/astro-calc/dist/generate-retrograde-calendar.js

Comprehensive astrological calculations using Swiss Ephemeris and astronomy-engine for positions, aspects, houses, lots, and scoring metrics

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const retrograde_1 = require("./retrograde");
const constants_1 = require("./constants");
function generateRetrogradeCalendar(startDate, years) {
    const calendar = {};
    const endDate = new Date(startDate.getTime() + years * 365 * 24 * 60 * 60 * 1000);
    // Initialize calendar with empty arrays for each planet
    constants_1.RETROGRADE_PLANETS.forEach((planet) => {
        calendar[planet.toString()] = [];
    });
    // For each planet, find all retrograde periods
    constants_1.RETROGRADE_PLANETS.forEach((planet) => {
        console.log(`Finding retrograde periods for ${planet}...`);
        let currentDate = new Date(startDate);
        let inRetrograde = false;
        let periodStart = null;
        while (currentDate < endDate) {
            const retro = (0, retrograde_1.isRetrograde)(currentDate, planet);
            if (!inRetrograde && retro) {
                inRetrograde = true;
                periodStart = new Date(currentDate);
            }
            else if (inRetrograde && !retro && periodStart) {
                inRetrograde = false;
                calendar[planet.toString()].push({
                    startDate: periodStart.toISOString().split("T")[0],
                    endDate: new Date(currentDate.getTime() - 24 * 60 * 60 * 1000)
                        .toISOString()
                        .split("T")[0],
                });
                periodStart = null;
            }
            currentDate = new Date(currentDate.getTime() + 24 * 60 * 60 * 1000);
        }
        // Handle case where planet is still in retrograde at end date
        if (inRetrograde && periodStart) {
            calendar[planet.toString()].push({
                startDate: periodStart.toISOString().split("T")[0],
                endDate: endDate.toISOString().split("T")[0],
            });
        }
    });
    return calendar;
}
//# sourceMappingURL=generate-retrograde-calendar.js.map