import java.util.Vector;

public class Route {
    private double[] currentLocation; //Lat-Long coordinates for current location
    private Vector<Vector<String[]>> routeSequences; //3D array for routes. 1st dim selects route, 2nd dim selects route point, 3rd dim selects lat/long/speed/tolls (indices 0-2)
    private int routeSelected;
    private boolean tollsFlag; //stores user setting for whether to avoid tolls
    private boolean hwyFlag; //stores user preference for whether to avoid major highways
    public Vector<Double> timeEstimate; //time estimate in seconds
    public Vector<Float> tollsAmount; //stores toll amount if toll roads are used
    public Destination currentDestination; //uses user-created class Destination

    private void updateCurrentLocation() {
        //execute api call out to GPS service to obtain current location
        //current location will be hardcoded for testing
        double[] tmpLoc = {28.1700863880887, -80.67088403224037};
        currentLocation = tmpLoc;
    }

    private void calculateRoutes() {
        //execute api call out to routing service to get route info
        //ideally a query would go out using multiple pathfiding algorithms to get route options
        updateCurrentLocation();
        HelperFunctions apiCallToRouting = new HelperFunctions();
        //route option 1
        routeSequences.add(apiCallToRouting.routingAPI(currentLocation, currentDestination.getDestinationCoordinates(), tollsFlag, hwyFlag));
        timeEstimate[0] = estimateTime(routeSequences.get(0));
        estimateTolls(routeSequences.get(0));
        //route option 2
        routeSequences.add(apiCallToRouting.routingAPI(currentLocation, currentDestination.getDestinationCoordinates(), tollsFlag, hwyFlag));
        timeEstimate[1] = estimateTime(routeSequences.get(1));
        estimateTolls(routeSequences.get(1));
        //route option 3
        routeSequences.add(apiCallToRouting.routingAPI(currentLocation, currentDestination.getDestinationCoordinates(), tollsFlag, hwyFlag));
        timeEstimate[2] = estimateTime(routeSequences.get(2));
        estimateTolls(routeSequences.get(2));
    }

    public int enumRoutes() {
        return routeSequences.length;
    }

    public void selectRoute(int userSelection) {
        routeSelected = userSelection;
    }

    public int getRouteSelected() {return routeSelected;}

    public float estimateTolls(double[][] route) {
        float runningTolls = 0;
        for (int i = 0; i <= route.length; i++) {
            runningTolls += route[i][3];
        }
        return runningTolls;
    }

    public double estimateTime(Vector<String[]> route) {
        //calculates distances between route segments, divided by speed in MPH
        //the API would return expected speed due to traffic conditions as part of the speed (index 2) in the route array
        double runningTime = 0;
        //steps through subsequence route points to get distances, calculates time based on speed estimate, and accumulates on runningTime
        for (String[] el : route) { 
            runningTime += Double.parseDouble(el[1])/Double.parseDouble(el[2]);
        }
        return runningTime;
    }
}