/*
 * Copyright (C) Cross The Road Electronics.  All rights reserved.
 * License information can be found in CTRE_LICENSE.txt
 * For support and suggestions contact support@ctr-electronics.com or file
 * an issue tracker at https://github.com/CrossTheRoadElec/Phoenix-Releases
 */
package com.ctre.phoenix6.controls;

import com.ctre.phoenix6.StatusCode;
import com.ctre.phoenix6.controls.jni.ControlJNI;

import edu.wpi.first.units.*;
import edu.wpi.first.units.measure.*;
import static edu.wpi.first.units.Units.*;

import java.util.HashMap;
import java.util.Map;

/**
 * Request a specified voltage with a differential position closed-loop.
 * <p>
 * This control mode will attempt to apply the specified voltage to the motor. If the supply voltage is below
 * the requested voltage, the motor controller will output the supply voltage. It will also set the motor's
 * differential position setpoint to the specified position.
 */
public class DifferentialVoltage extends ControlRequest implements Cloneable
{
    /**
     * Voltage to attempt to drive at
     * 
     * <ul>
     *   <li> Units: Volts
     * </ul>
     * 
     */
    public double TargetOutput;
    /**
     * Differential position to drive towards in rotations
     * 
     * <ul>
     *   <li> Units: rotations
     * </ul>
     * 
     */
    public double DifferentialPosition;
    /**
     * Set to true to use FOC commutation (requires Phoenix Pro), which increases
     * peak power by ~15%. Set to false to use trapezoidal commutation.
     * <p>
     * FOC improves motor performance by leveraging torque (current) control. 
     * However, this may be inconvenient for applications that require specifying
     * duty cycle or voltage.  CTR-Electronics has developed a hybrid method that
     * combines the performances gains of FOC while still allowing applications to
     * provide duty cycle or voltage demand.  This not to be confused with simple
     * sinusoidal control or phase voltage control which lacks the performance
     * gains.
     */
    public boolean EnableFOC = true;
    /**
     * Select which gains are applied to the differential controller by selecting
     * the slot.  Use the configuration api to set the gain values for the selected
     * slot before enabling this feature. Slot must be within [0,2].
     */
    public int DifferentialSlot = 1;
    /**
     * Set to true to static-brake the rotor when output is zero (or within
     * deadband).  Set to false to use the NeutralMode configuration setting
     * (default). This flag exists to provide the fundamental behavior of this
     * control when output is zero, which is to provide 0V to the motor.
     */
    public boolean OverrideBrakeDurNeutral = false;
    /**
     * Set to true to force forward limiting.  This allows users to use other limit
     * switch sensors connected to robot controller.  This also allows use of active
     * sensors that require external power.
     */
    public boolean LimitForwardMotion = false;
    /**
     * Set to true to force reverse limiting.  This allows users to use other limit
     * switch sensors connected to robot controller.  This also allows use of active
     * sensors that require external power.
     */
    public boolean LimitReverseMotion = false;
    /**
     * Set to true to ignore hardware limit switches and the LimitForwardMotion and
     * LimitReverseMotion parameters, instead allowing motion.
     * <p>
     * This can be useful on mechanisms such as an intake/feeder, where a limit
     * switch stops motion while intaking but should be ignored when feeding to a
     * shooter.
     * <p>
     * The hardware limit faults and Forward/ReverseLimit signals will still report
     * the values of the limit switches regardless of this parameter.
     */
    public boolean IgnoreHardwareLimits = false;
    /**
     * Set to true to delay applying this control request until a timesync boundary
     * (requires Phoenix Pro and CANivore). This eliminates the impact of
     * nondeterministic network delays in exchange for a larger but deterministic
     * control latency.
     * <p>
     * This requires setting the ControlTimesyncFreqHz config in MotorOutputConfigs.
     * Additionally, when this is enabled, the UpdateFreqHz of this request should
     * be set to 0 Hz.
     */
    public boolean UseTimesync = false;

    /**
     * The period at which this control will update at.
     * This is designated in Hertz, with a minimum of 20 Hz
     * (every 50 ms) and a maximum of 1000 Hz (every 1 ms).
     * <p>
     * If this field is set to 0 Hz, the control request will
     * be sent immediately as a one-shot frame. This may be useful
     * for advanced applications that require outputs to be
     * synchronized with data acquisition. In this case, we
     * recommend not exceeding 50 ms between control calls.
     */
    public double UpdateFreqHz = 100;

    /**
     * Request a specified voltage with a differential position closed-loop.
     * <p>
     * This control mode will attempt to apply the specified voltage to the motor.
     * If the supply voltage is below the requested voltage, the motor controller
     * will output the supply voltage. It will also set the motor's differential
     * position setpoint to the specified position.
     * 
     * @param TargetOutput    Voltage to attempt to drive at
     * @param DifferentialPosition    Differential position to drive towards in
     *                                rotations
     */
    public DifferentialVoltage(double TargetOutput, double DifferentialPosition)
    {
        super("DifferentialVoltage");
        this.TargetOutput = TargetOutput;
        this.DifferentialPosition = DifferentialPosition;
    }

    /**
     * Request a specified voltage with a differential position closed-loop.
     * <p>
     * This control mode will attempt to apply the specified voltage to the motor.
     * If the supply voltage is below the requested voltage, the motor controller
     * will output the supply voltage. It will also set the motor's differential
     * position setpoint to the specified position.
     * 
     * @param TargetOutput    Voltage to attempt to drive at
     * @param DifferentialPosition    Differential position to drive towards in
     *                                rotations
     */
    public DifferentialVoltage(Voltage TargetOutput, Angle DifferentialPosition)
    {
        this(TargetOutput.in(Volts), DifferentialPosition.in(Rotations));
    }

    @Override
    public String toString()
    {
        String ss = "Control: DifferentialVoltage\n";
        ss += "    TargetOutput: " + TargetOutput + " Volts" + "\n";
        ss += "    DifferentialPosition: " + DifferentialPosition + " rotations" + "\n";
        ss += "    EnableFOC: " + EnableFOC + "\n";
        ss += "    DifferentialSlot: " + DifferentialSlot + "\n";
        ss += "    OverrideBrakeDurNeutral: " + OverrideBrakeDurNeutral + "\n";
        ss += "    LimitForwardMotion: " + LimitForwardMotion + "\n";
        ss += "    LimitReverseMotion: " + LimitReverseMotion + "\n";
        ss += "    IgnoreHardwareLimits: " + IgnoreHardwareLimits + "\n";
        ss += "    UseTimesync: " + UseTimesync + "\n";
        return ss;
    }

    @Override
    public StatusCode sendRequest(String network, int deviceHash)
    {
        return StatusCode.valueOf(ControlJNI.JNI_RequestControlDifferentialVoltage(
                network, deviceHash, UpdateFreqHz, TargetOutput, DifferentialPosition, EnableFOC, DifferentialSlot, OverrideBrakeDurNeutral, LimitForwardMotion, LimitReverseMotion, IgnoreHardwareLimits, UseTimesync));
    }

    /**
     * Gets information about this control request.
     *
     * @return Map of control parameter names and corresponding applied values
     */
    @Override
    public Map<String, String> getControlInfo()
    {
        var controlInfo = new HashMap<String, String>();
        controlInfo.put("Name", getName());
        controlInfo.put("TargetOutput", String.valueOf(this.TargetOutput));
        controlInfo.put("DifferentialPosition", String.valueOf(this.DifferentialPosition));
        controlInfo.put("EnableFOC", String.valueOf(this.EnableFOC));
        controlInfo.put("DifferentialSlot", String.valueOf(this.DifferentialSlot));
        controlInfo.put("OverrideBrakeDurNeutral", String.valueOf(this.OverrideBrakeDurNeutral));
        controlInfo.put("LimitForwardMotion", String.valueOf(this.LimitForwardMotion));
        controlInfo.put("LimitReverseMotion", String.valueOf(this.LimitReverseMotion));
        controlInfo.put("IgnoreHardwareLimits", String.valueOf(this.IgnoreHardwareLimits));
        controlInfo.put("UseTimesync", String.valueOf(this.UseTimesync));
        return controlInfo;
    }
    
    /**
     * Modifies this Control Request's TargetOutput parameter and returns itself for
     * method-chaining and easier to use request API.
     * <p>
     * Voltage to attempt to drive at
     * 
     * <ul>
     *   <li> Units: Volts
     * </ul>
     * 
     *
     * @param newTargetOutput Parameter to modify
     * @return Itself
     */
    public DifferentialVoltage withTargetOutput(double newTargetOutput)
    {
        TargetOutput = newTargetOutput;
        return this;
    }
    
    /**
     * Modifies this Control Request's TargetOutput parameter and returns itself for
     * method-chaining and easier to use request API.
     * <p>
     * Voltage to attempt to drive at
     * 
     * <ul>
     *   <li> Units: Volts
     * </ul>
     * 
     *
     * @param newTargetOutput Parameter to modify
     * @return Itself
     */
    public DifferentialVoltage withTargetOutput(Voltage newTargetOutput)
    {
        TargetOutput = newTargetOutput.in(Volts);
        return this;
    }
    
    /**
     * Helper method to get this Control Request's TargetOutput parameter converted
     * to a unit type. If not using the Java units library, {@link #TargetOutput}
     * can be accessed directly instead.
     * <p>
     * Voltage to attempt to drive at
     * 
     * <ul>
     *   <li> Units: Volts
     * </ul>
     * 
     *
     * @return TargetOutput
     */
    public Voltage getTargetOutputMeasure()
    {
        return Volts.of(TargetOutput);
    }
    
    /**
     * Modifies this Control Request's DifferentialPosition parameter and returns itself for
     * method-chaining and easier to use request API.
     * <p>
     * Differential position to drive towards in rotations
     * 
     * <ul>
     *   <li> Units: rotations
     * </ul>
     * 
     *
     * @param newDifferentialPosition Parameter to modify
     * @return Itself
     */
    public DifferentialVoltage withDifferentialPosition(double newDifferentialPosition)
    {
        DifferentialPosition = newDifferentialPosition;
        return this;
    }
    
    /**
     * Modifies this Control Request's DifferentialPosition parameter and returns itself for
     * method-chaining and easier to use request API.
     * <p>
     * Differential position to drive towards in rotations
     * 
     * <ul>
     *   <li> Units: rotations
     * </ul>
     * 
     *
     * @param newDifferentialPosition Parameter to modify
     * @return Itself
     */
    public DifferentialVoltage withDifferentialPosition(Angle newDifferentialPosition)
    {
        DifferentialPosition = newDifferentialPosition.in(Rotations);
        return this;
    }
    
    /**
     * Helper method to get this Control Request's DifferentialPosition parameter converted
     * to a unit type. If not using the Java units library, {@link #DifferentialPosition}
     * can be accessed directly instead.
     * <p>
     * Differential position to drive towards in rotations
     * 
     * <ul>
     *   <li> Units: rotations
     * </ul>
     * 
     *
     * @return DifferentialPosition
     */
    public Angle getDifferentialPositionMeasure()
    {
        return Rotations.of(DifferentialPosition);
    }
    
    /**
     * Modifies this Control Request's EnableFOC parameter and returns itself for
     * method-chaining and easier to use request API.
     * <p>
     * Set to true to use FOC commutation (requires Phoenix Pro), which increases
     * peak power by ~15%. Set to false to use trapezoidal commutation.
     * <p>
     * FOC improves motor performance by leveraging torque (current) control. 
     * However, this may be inconvenient for applications that require specifying
     * duty cycle or voltage.  CTR-Electronics has developed a hybrid method that
     * combines the performances gains of FOC while still allowing applications to
     * provide duty cycle or voltage demand.  This not to be confused with simple
     * sinusoidal control or phase voltage control which lacks the performance
     * gains.
     *
     * @param newEnableFOC Parameter to modify
     * @return Itself
     */
    public DifferentialVoltage withEnableFOC(boolean newEnableFOC)
    {
        EnableFOC = newEnableFOC;
        return this;
    }
    
    /**
     * Modifies this Control Request's DifferentialSlot parameter and returns itself for
     * method-chaining and easier to use request API.
     * <p>
     * Select which gains are applied to the differential controller by selecting
     * the slot.  Use the configuration api to set the gain values for the selected
     * slot before enabling this feature. Slot must be within [0,2].
     *
     * @param newDifferentialSlot Parameter to modify
     * @return Itself
     */
    public DifferentialVoltage withDifferentialSlot(int newDifferentialSlot)
    {
        DifferentialSlot = newDifferentialSlot;
        return this;
    }
    
    /**
     * Modifies this Control Request's OverrideBrakeDurNeutral parameter and returns itself for
     * method-chaining and easier to use request API.
     * <p>
     * Set to true to static-brake the rotor when output is zero (or within
     * deadband).  Set to false to use the NeutralMode configuration setting
     * (default). This flag exists to provide the fundamental behavior of this
     * control when output is zero, which is to provide 0V to the motor.
     *
     * @param newOverrideBrakeDurNeutral Parameter to modify
     * @return Itself
     */
    public DifferentialVoltage withOverrideBrakeDurNeutral(boolean newOverrideBrakeDurNeutral)
    {
        OverrideBrakeDurNeutral = newOverrideBrakeDurNeutral;
        return this;
    }
    
    /**
     * Modifies this Control Request's LimitForwardMotion parameter and returns itself for
     * method-chaining and easier to use request API.
     * <p>
     * Set to true to force forward limiting.  This allows users to use other limit
     * switch sensors connected to robot controller.  This also allows use of active
     * sensors that require external power.
     *
     * @param newLimitForwardMotion Parameter to modify
     * @return Itself
     */
    public DifferentialVoltage withLimitForwardMotion(boolean newLimitForwardMotion)
    {
        LimitForwardMotion = newLimitForwardMotion;
        return this;
    }
    
    /**
     * Modifies this Control Request's LimitReverseMotion parameter and returns itself for
     * method-chaining and easier to use request API.
     * <p>
     * Set to true to force reverse limiting.  This allows users to use other limit
     * switch sensors connected to robot controller.  This also allows use of active
     * sensors that require external power.
     *
     * @param newLimitReverseMotion Parameter to modify
     * @return Itself
     */
    public DifferentialVoltage withLimitReverseMotion(boolean newLimitReverseMotion)
    {
        LimitReverseMotion = newLimitReverseMotion;
        return this;
    }
    
    /**
     * Modifies this Control Request's IgnoreHardwareLimits parameter and returns itself for
     * method-chaining and easier to use request API.
     * <p>
     * Set to true to ignore hardware limit switches and the LimitForwardMotion and
     * LimitReverseMotion parameters, instead allowing motion.
     * <p>
     * This can be useful on mechanisms such as an intake/feeder, where a limit
     * switch stops motion while intaking but should be ignored when feeding to a
     * shooter.
     * <p>
     * The hardware limit faults and Forward/ReverseLimit signals will still report
     * the values of the limit switches regardless of this parameter.
     *
     * @param newIgnoreHardwareLimits Parameter to modify
     * @return Itself
     */
    public DifferentialVoltage withIgnoreHardwareLimits(boolean newIgnoreHardwareLimits)
    {
        IgnoreHardwareLimits = newIgnoreHardwareLimits;
        return this;
    }
    
    /**
     * Modifies this Control Request's UseTimesync parameter and returns itself for
     * method-chaining and easier to use request API.
     * <p>
     * Set to true to delay applying this control request until a timesync boundary
     * (requires Phoenix Pro and CANivore). This eliminates the impact of
     * nondeterministic network delays in exchange for a larger but deterministic
     * control latency.
     * <p>
     * This requires setting the ControlTimesyncFreqHz config in MotorOutputConfigs.
     * Additionally, when this is enabled, the UpdateFreqHz of this request should
     * be set to 0 Hz.
     *
     * @param newUseTimesync Parameter to modify
     * @return Itself
     */
    public DifferentialVoltage withUseTimesync(boolean newUseTimesync)
    {
        UseTimesync = newUseTimesync;
        return this;
    }

    /**
     * Sets the period at which this control will update at.
     * This is designated in Hertz, with a minimum of 20 Hz
     * (every 50 ms) and a maximum of 1000 Hz (every 1 ms).
     * <p>
     * If this field is set to 0 Hz, the control request will
     * be sent immediately as a one-shot frame. This may be useful
     * for advanced applications that require outputs to be
     * synchronized with data acquisition. In this case, we
     * recommend not exceeding 50 ms between control calls.
     *
     * @param newUpdateFreqHz Parameter to modify
     * @return Itself
     */
    @Override
    public DifferentialVoltage withUpdateFreqHz(double newUpdateFreqHz)
    {
        UpdateFreqHz = newUpdateFreqHz;
        return this;
    }

    /**
     * Sets the period at which this control will update at.
     * This is designated in Hertz, with a minimum of 20 Hz
     * (every 50 ms) and a maximum of 1000 Hz (every 1 ms).
     * <p>
     * If this field is set to 0 Hz, the control request will
     * be sent immediately as a one-shot frame. This may be useful
     * for advanced applications that require outputs to be
     * synchronized with data acquisition. In this case, we
     * recommend not exceeding 50 ms between control calls.
     *
     * @param newUpdateFreqHz Parameter to modify
     * @return Itself
     */
    public DifferentialVoltage withUpdateFreqHz(Frequency newUpdateFreqHz)
    {
        UpdateFreqHz = newUpdateFreqHz.in(Hertz);
        return this;
    }

    @Override
    public DifferentialVoltage clone()
    {
        try {
            return (DifferentialVoltage)super.clone();
        } catch (CloneNotSupportedException ex) {
            /* this should never happen */
            throw new RuntimeException(ex);
        }
    }
}