import { getOrbit, getOrbitFromEccentricity, type Orbit } from "../calculations/orbit-calculations";

export interface OrbitalParameters {
	periapsis: number;
	eccentricChoice: "apoapsis" | "eccentricity";
	apoapsis: number;
	eccentricity: number;
	inclination: number;
	longitudeOfAscendingNode: number;
	argumentOfPeriapsis: number;
}

export const DefaultOrbitalParameters: OrbitalParameters = {
	periapsis: 100000,
	eccentricChoice: "apoapsis",
	apoapsis: 100000,
	eccentricity: 0,
	inclination: 0,
	longitudeOfAscendingNode: 0,
	argumentOfPeriapsis: 0
}

export function encodeOrbitalParameters(orbitalParameters: OrbitalParameters): string {
	return JSON.stringify(orbitalParameters);
}

export function decodeOrbitalParameters(jsonString: string): OrbitalParameters {
	let parsedObject = JSON.parse(jsonString);
	var orbitalParameters: OrbitalParameters;
	if (parsedObject as OrbitalParameters === undefined) {
		orbitalParameters = DefaultOrbitalParameters;
	} else {
		orbitalParameters = parsedObject;
	}

	return orbitalParameters;
}

export function createLabel(forId: string, labelText: string): HTMLLabelElement {
	let label = document.createElement("label");
	label.setAttribute("for", forId);
	label.appendChild(document.createTextNode(labelText));
	return label;
}

export function createNumberInput(id: string, minimum: number, maximum?: number, size?: number): HTMLInputElement {
	let numberInput = document.createElement("input");
	numberInput.setAttribute("id", id);
	numberInput.setAttribute("type", "number");
	numberInput.setAttribute("min", minimum.toFixed(0));
	if (maximum !== undefined) {
		numberInput.setAttribute("max", maximum.toFixed(0));
	}

	if (size !== undefined) {
		numberInput.setAttribute("size", size.toFixed(0));
	}

	return numberInput;
}

export function createDisabledInput(id: string) {
	let input = document.createElement("input");
	input.setAttribute("id", id);
	input.setAttribute("disabled", "");
	return input;
}

export function getOrbitFromParameters(orbitalParameters: OrbitalParameters, planetRadius: number): Orbit {
	if (orbitalParameters.eccentricChoice == "apoapsis") {
		return getOrbit(
			orbitalParameters.periapsis + planetRadius,
			orbitalParameters.apoapsis + planetRadius,
			orbitalParameters.inclination,
			orbitalParameters.longitudeOfAscendingNode,
			orbitalParameters.argumentOfPeriapsis
		)
	} else {
		return getOrbitFromEccentricity(
			orbitalParameters.periapsis + planetRadius,
			orbitalParameters.eccentricity,
			orbitalParameters.inclination,
			orbitalParameters.longitudeOfAscendingNode,
			orbitalParameters.argumentOfPeriapsis
		);
	}
}