package net.knarcraft.ffmpegconverter.handler;

import net.knarcraft.ffmpegconverter.FFMpegConvert;
import net.knarcraft.ffmpegconverter.config.ConfigHandler;
import net.knarcraft.ffmpegconverter.config.ConfigKey;
import net.knarcraft.ffmpegconverter.utility.OutputUtil;
import org.apache.commons.configuration2.PropertiesConfiguration;
import org.jetbrains.annotations.NotNull;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

/**
 * A handler for keeping track of which hardware acceleration methods are available on the current system
 */
public record AvailableHardwareEncoderHandler(@NotNull List<String> availableHardwareEncodings) {

    private static final ConfigHandler configHandler = FFMpegConvert.getConfiguration().getConfigHandler();

    /**
     * Gets all hardware encodings
     *
     * @return <p>All hardware encodings</p>
     */
    @Override
    @NotNull
    public List<String> availableHardwareEncodings() {
        return new ArrayList<>(this.availableHardwareEncodings);
    }

    /**
     * Removes the specified hardware encoding
     *
     * @param encoding <p>The hardware encoding to remove</p>
     */
    public void removeHardwareEncoding(@NotNull String encoding) {
        this.availableHardwareEncodings.remove(encoding);
    }

    /**
     * Saves settings for this available hardware encoder handler
     */
    public void save() {
        PropertiesConfiguration configuration = configHandler.getWritableConfiguration();
        configuration.setProperty(ConfigKey.HARDWARE_ACCELERATED_ENCODERS.toString(), String.join(",", this.availableHardwareEncodings));
        configHandler.writeConfiguration();
        OutputUtil.printDebug("Saved available hardware encoder handler");
    }

    /**
     * Loads saved settings for an available hardware encoder handler
     *
     * @return <p>The loaded available hardware encoder handler, or a new one if no data has been saved</p>
     */
    @NotNull
    public static AvailableHardwareEncoderHandler load() {
        try {
            configHandler.load();
        } catch (IOException e) {
            throw new RuntimeException(e);
        }
        return new AvailableHardwareEncoderHandler(FFMpegConvert.getConfiguration().hardwareEncoders());
    }

}