Dynamically updating parameters list based on a user's input

src/main/java/com/annimon/ffmpegbot/commands/ffmpeg/MediaProcessingBundle.java

@@ -83,6 +83,7 @@ public class MediaProcessingBundle implements CommandBundle<For> {
             if (param != null && ctx.argumentsLength() == 2) {
                 final int index = Integer.parseInt(ctx.argument(1));
                 param.select(index);
+                parametersResolver.refine(session.getParams());
                 session.setSelectedParam(null);
             }
         }

src/main/java/com/annimon/ffmpegbot/parameters/BooleanParameter.java

@@ -7,6 +7,10 @@ public abstract class BooleanParameter extends Parameter<Boolean> {
         super(id, name, List.of(false, true), value);
     }
 
+    public boolean getValueAsPrimitive() {
+        return (value != null && value);
+    }
+
     @Override
     public String describeValue(Boolean value) {
         if (value != null && value) {

src/main/java/com/annimon/ffmpegbot/parameters/OutputFormat.java

@@ -2,7 +2,9 @@ package com.annimon.ffmpegbot.parameters;
 
 import com.annimon.ffmpegbot.commands.ffmpeg.Visitor;
 
+import java.util.ArrayList;
 import java.util.List;
+import java.util.Objects;
 
 public class OutputFormat extends StringParameter {
     public static final String ID = "output";
@@ -12,7 +14,29 @@ public class OutputFormat extends StringParameter {
     public static final String VIDEO_NOTE = "VIDEO NOTE";
 
     public OutputFormat(List<String> values, String initialValue) {
-        super(ID, "➡\uFE0F Output", values, initialValue);
+        super(ID, "➡️ Output", values, initialValue);
+    }
+
+    public OutputFormat disableFormat(String format) {
+        if (possibleValues.size() <= 1) return this;
+        final var values = possibleValues.stream()
+                .filter(f -> !Objects.equals(f, format))
+                .map(Objects::toString)
+                .toList();
+        if (possibleValues.size() == values.size()) {
+            return this;
+        }
+        return new OutputFormat(values, values.get(0));
+    }
+
+    public OutputFormat enableFormat(String format) {
+        boolean contains = possibleValues.stream()
+                .anyMatch(f -> Objects.equals(f, format));
+        if (contains) return this;
+
+        final var values = new ArrayList<String>(possibleValues);
+        values.add(format);
+        return new OutputFormat(values, values.get(0));
     }
 
     @Override

src/main/java/com/annimon/ffmpegbot/parameters/Parameter.java

@@ -12,12 +12,14 @@ public abstract class Parameter<T> {
     protected final String displayName;
     protected final List<? extends T> possibleValues;
     protected T value;
+    private boolean enabled;
 
     protected Parameter(String id, String displayName, List<? extends T> values, T value) {
         this.id = id;
         this.displayName = displayName;
         this.possibleValues = values;
         this.value = value;
+        this.enabled = true;
         checkArgument(!values.isEmpty(), "possible values cannot be empty");
         checkArgument(values.contains(value), "possible values must contain a value");
     }
@@ -34,6 +36,17 @@ public abstract class Parameter<T> {
         return possibleValues.size();
     }
 
+    public boolean isEnabled() {
+        return enabled;
+    }
+
+    public void enable() {
+        enabled = true;
+    }
+
+    public void disable() {
+        enabled = false;
+    }
 
     public abstract <I> void accept(Visitor<I> visitor, I input);
 

src/main/java/com/annimon/ffmpegbot/parameters/Parameters.java

@@ -2,44 +2,68 @@ package com.annimon.ffmpegbot.parameters;
 
 import org.jetbrains.annotations.NotNull;
 import java.util.*;
+import java.util.stream.Stream;
 
 public class Parameters extends AbstractCollection<Parameter<?>> {
 
-    private final Map<String, Parameter<?>> enabledParameters;
-    private final Map<String, Parameter<?>> disabledParameters;
+    private final Map<String, Parameter<?>> parameters;
 
     public Parameters() {
-        enabledParameters = new LinkedHashMap<>();
-        disabledParameters = new LinkedHashMap<>();
+        parameters = new LinkedHashMap<>();
     }
 
     @Override
     public boolean add(Parameter<?> parameter) {
-        return !Objects.equals(parameter, enabledParameters.put(parameter.id, parameter));
+        parameter.enable();
+        return !Objects.equals(parameter, parameters.put(parameter.id, parameter));
     }
 
     public Parameter<?> findById(String id) {
-        return enabledParameters.get(id);
+        final var parameter = parameters.get(id);
+        if (parameter != null && parameter.isEnabled()) {
+            return parameter;
+        }
+        return null;
+    }
+
+    public <P extends Parameter<?>> Optional<P> findById(String id, Class<P> clazz) {
+        return Optional.ofNullable(findById(id))
+                .filter(clazz::isInstance)
+                .map(clazz::cast);
     }
 
     public void disable(String id) {
-        Optional.ofNullable(findById(id))
-                .ifPresent(p -> disabledParameters.put(p.id, p));
+        Optional.ofNullable(parameters.get(id))
+                .ifPresent(Parameter::disable);
+    }
+
+    public void disableAll(Collection<String> ids) {
+        ids.forEach(this::disable);
     }
 
     public void enable(String id) {
-        Optional.ofNullable(disabledParameters.get(id))
-                .ifPresent(this::add);
+        Optional.ofNullable(parameters.get(id))
+                .ifPresent(Parameter::enable);
+    }
+
+    public void enableAll(Collection<String> ids) {
+        ids.forEach(this::enable);
     }
 
     @NotNull
     @Override
     public Iterator<Parameter<?>> iterator() {
-        return enabledParameters.values().iterator();
+        return enabledParameters().iterator();
     }
 
     @Override
     public int size() {
-        return enabledParameters.size();
+        return (int) enabledParameters().count();
+    }
+
+    private Stream<Parameter<?>> enabledParameters() {
+        return parameters.values()
+                .stream()
+                .filter(Parameter::isEnabled);
     }
 }

src/main/java/com/annimon/ffmpegbot/parameters/resolvers/AudioResolver.java

@@ -5,6 +5,8 @@ import com.annimon.ffmpegbot.session.FileInfo;
 import com.annimon.ffmpegbot.session.FileType;
 import org.jetbrains.annotations.NotNull;
 import java.util.List;
+import java.util.Optional;
+import java.util.Set;
 
 public class AudioResolver implements ParametersResolver {
 
@@ -28,6 +30,28 @@ public class AudioResolver implements ParametersResolver {
         }
     }
 
+    @Override
+    public void refine(@NotNull Parameters parameters) {
+        parameters.findById(DisableAudio.ID, DisableAudio.class)
+                .ifPresent(p -> {
+                    final Set<String> parameterIds = Set.of(
+                            AudioBitrate.ID,
+                            AudioCrystalizer.ID,
+                            AudioEffect.ID,
+                            AudioPitch.ID,
+                            AudioVolume.ID
+                    );
+                    Optional<OutputFormat> outputFormat = parameters.findById(OutputFormat.ID, OutputFormat.class);
+                    if (p.getValueAsPrimitive()) {
+                        parameters.disableAll(parameterIds);
+                        outputFormat.ifPresent(par -> parameters.add(par.disableFormat(OutputFormat.AUDIO)));
+                    } else {
+                        parameters.enableAll(parameterIds);
+                        outputFormat.ifPresent(par -> parameters.add(par.enableFormat(OutputFormat.AUDIO)));
+                    }
+                });
+    }
+
     private void disableAudioParam(@NotNull Parameters parameters, @NotNull FileType fileType) {
         final boolean canAudioBeDisabled = switch (fileType) {
             case ANIMATION, AUDIO, VOICE -> false;

src/main/java/com/annimon/ffmpegbot/parameters/resolvers/GlobalParametersResolver.java

@@ -24,4 +24,11 @@ public class GlobalParametersResolver implements ParametersResolver {
             resolver.resolve(parameters, fileInfo);
         }
     }
+
+    @Override
+    public void refine(@NotNull Parameters parameters) {
+        for (ParametersResolver resolver : resolvers) {
+            resolver.refine(parameters);
+        }
+    }
 }

src/main/java/com/annimon/ffmpegbot/parameters/resolvers/MultiAudioStreamsResolver.java

@@ -1,7 +1,6 @@
 package com.annimon.ffmpegbot.parameters.resolvers;
 
-import com.annimon.ffmpegbot.parameters.AudioStreamByLanguage;
-import com.annimon.ffmpegbot.parameters.Parameters;
+import com.annimon.ffmpegbot.parameters.*;
 import com.annimon.ffmpegbot.session.FileInfo;
 import com.annimon.ffmpegbot.session.FileType;
 import org.jetbrains.annotations.NotNull;
@@ -19,4 +18,16 @@ public class MultiAudioStreamsResolver implements ParametersResolver {
             parameters.add(new AudioStreamByLanguage());
         }
     }
+
+    @Override
+    public void refine(@NotNull Parameters parameters) {
+        parameters.findById(DisableAudio.ID, DisableAudio.class)
+                .ifPresent(p -> {
+                    if (p.getValueAsPrimitive()) {
+                        parameters.disable(AudioStreamByLanguage.ID);
+                    } else {
+                        parameters.enable(AudioStreamByLanguage.ID);
+                    }
+                });
+    }
 }

src/main/java/com/annimon/ffmpegbot/parameters/resolvers/ParametersResolver.java

@@ -7,4 +7,15 @@ import org.jetbrains.annotations.NotNull;
 public interface ParametersResolver {
 
     void resolve(@NotNull Parameters parameters, @NotNull FileInfo fileInfo);
+
+    /**
+     * Refines all parameters based on user input.
+     * <p>
+     * Example: if Disable audio is ON -> removes all audio parameters.
+     *
+     * @param parameters all parameters
+     */
+    default void refine(@NotNull Parameters parameters) {
+
+    }
 }

src/main/java/com/annimon/ffmpegbot/parameters/resolvers/VideoResolver.java

@@ -4,6 +4,8 @@ import com.annimon.ffmpegbot.parameters.*;
 import com.annimon.ffmpegbot.session.FileInfo;
 import org.jetbrains.annotations.NotNull;
 import java.util.List;
+import java.util.Objects;
+import java.util.Set;
 
 public class VideoResolver implements ParametersResolver {
 
@@ -25,4 +27,25 @@ public class VideoResolver implements ParametersResolver {
             ));
         }
     }
+
+    @Override
+    public void refine(@NotNull Parameters parameters) {
+        parameters.findById(OutputFormat.ID, OutputFormat.class)
+                .map(Parameter::getValue)
+                .ifPresent(format -> {
+                    final Set<String> parameterIds = Set.of(
+                            Contrast.ID,
+                            Gamma.ID,
+                            Saturation.ID,
+                            VideoBitrate.ID,
+                            VideoScale.ID,
+                            VideoFrameRate.ID
+                    );
+                    if (Objects.equals(format, OutputFormat.AUDIO)) {
+                        parameters.disableAll(parameterIds);
+                    } else {
+                        parameters.enableAll(parameterIds);
+                    }
+                });
+    }
 }