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Standalone fully-featured Whatsapp Web API for Java and Kotlin
package it.auties.whatsapp.model.request;
import it.auties.whatsapp.model.contact.ContactJid;
import lombok.NonNull;
import java.util.Arrays;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Objects;
import java.util.Optional;
import java.util.concurrent.ConcurrentHashMap;
import java.util.function.BooleanSupplier;
import java.util.function.Function;
import static java.util.Map.ofEntries;
import static java.util.Objects.requireNonNull;
/**
* A utility class that wraps a map and provides easy methods to interact with its content
*
* @param toMap the non-null wrapped map
*/
public record Attributes(@NonNull ConcurrentHashMap toMap) {
/**
* Constructs a new map using the non-null provided entries
*
* @param entries the non-null entries
* @return a new instance of Attributes
*/
@SafeVarargs
public static Attributes of(@NonNull Entry... entries) {
return ofNullable(ofEntries(entries));
}
/**
* Constructs a new map using the provided nullable map
*
* @param map the nullable existing map
* @return a new instance of Attributes
*/
public static Attributes ofNullable(Map map) {
var modifiableMap = Optional.ofNullable(map).map(ConcurrentHashMap::new).orElseGet(ConcurrentHashMap::new);
return new Attributes(modifiableMap);
}
/**
* Constructs a new map using the provided non-null map
*
* @param map the non-null existing map
* @return a new instance of Attributes
*/
public static Attributes of(@NonNull Map map) {
return ofNullable(map);
}
/**
* Checks whether a non-null key exists in this map
*
* @param key the non-null key
* @return a boolean
*/
public boolean hasKey(@NonNull String key) {
return toMap.containsKey(key);
}
/**
* Checks whether a non-null key exists in this map and has the provided value
*
* @param key the non-null key
* @param value the nullable value to check against
* @return a boolean
*/
public boolean hasKey(@NonNull String key, String value) {
return Objects.equals(toMap.get(key), value);
}
/**
* Inserts a key-value pair in the wrapped map
*
* @param key the non-null key
* @param value the nullable value
* @param conditions the non-null conditions that must be met to insert the value
* @param the type of the value
* @return the calling instance
*/
@SafeVarargs
public final Attributes put(@NonNull String key, T value, @NonNull Function... conditions) {
var translated = Arrays.stream(conditions)
.map(condition -> (BooleanSupplier) () -> condition.apply(value))
.toArray(BooleanSupplier[]::new);
return put(key, value, translated);
}
/**
* Inserts a key-value pair in the wrapped map
*
* @param key the non-null key
* @param value the nullable value
* @param conditions the non-null conditions that must be met to insert the value
* @return the calling instance
*/
public Attributes put(@NonNull String key, Object value, @NonNull BooleanSupplier... conditions) {
return put(key, value, Arrays.stream(conditions).allMatch(BooleanSupplier::getAsBoolean));
}
/**
* Inserts a key-value pair in the wrapped map
*
* @param key the non-null key
* @param value the nullable value
* @param condition the condition that must be met to insert the value
* @return the calling instance
*/
public Attributes put(@NonNull String key, Object value, boolean condition) {
if (condition) {
toMap.put(key, value);
}
return this;
}
/**
* Inserts a key-value pair in the wrapped map
*
* @param key the non-null key
* @param value the nullable value
* @return the calling instance
*/
public Attributes put(@NonNull String key, Object value) {
toMap.put(key, value);
return this;
}
/**
* Gets a value by key in the wrapped map
*
* @param key the non-null key
* @param defaultValue the non-null default value
* @param clazz the non-null type of the value that is returned
* @param the type of the value that is returned
* @return the non-null value
*/
public T get(@NonNull String key, @NonNull T defaultValue, @NonNull Class clazz) {
return get(key, clazz).orElse(defaultValue);
}
/**
* Gets a value by key in the wrapped map
*
* @param key the non-null key
* @param clazz the non-null type of the value that is returned
* @param the type of the value that is returned
* @return the non-null value
*/
public Optional get(@NonNull String key, @NonNull Class clazz) {
return Optional.ofNullable(toMap.get(key)).map(clazz::cast);
}
/**
* Gets a value as an int by key in the wrapped map
*
* @param key the non-null key
* @return the non-null value
*/
public int getInt(@NonNull String key) {
return getOptionalInt(key).orElse(0);
}
/**
* Gets a value as an int by key in the wrapped map
*
* @param key the non-null key
* @return the non-null value
*/
public Optional getOptionalInt(String key) {
return get(key, Object.class).map(this::parseInt);
}
private int parseInt(Object value) {
if (value instanceof Number number) {
return number.intValue();
} else if (value instanceof String string) {
return Integer.parseInt(string);
} else {
throw new IllegalStateException("Unexpected value: " + value);
}
}
/**
* Gets a value as a long by key in the wrapped map
*
* @param key the non-null key
* @return the non-null value
*/
public long getLong(@NonNull String key) {
return getOptionalLong(key).orElse(0L);
}
/**
* Gets a value as a long by key in the wrapped map
*
* @param key the non-null key
* @return the non-null value
*/
public Optional getOptionalLong(@NonNull String key) {
return get(key, Object.class).map(this::parseLong);
}
private long parseLong(Object value) {
if (requireNonNull(value) instanceof Number number) {
return number.longValue();
} else if (value instanceof String string) {
return Long.parseLong(string);
} else {
throw new IllegalStateException("Unexpected value: " + value);
}
}
/**
* Gets a non-null value as a string by key in the wrapped map. If the key doesn't exist,
* unknown is returned.
*
* @param key the non-null key
* @return the non-null value
*/
public String getString(@NonNull String key) {
return getString(key, "unknown");
}
/**
* Gets a value as a string by key in the wrapped map. If the value is null, defaultValue is
* returned.
*
* @param key the non-null key
* @return a non-null string
*/
public String getString(@NonNull String key, String defaultValue) {
return get(key, Object.class).map(Object::toString).orElse(defaultValue);
}
/**
* Gets a nullable value as a string by key in the wrapped map
*
* @param key the non-null key
* @return the nullable value
*/
public String getNullableString(@NonNull String key) {
return getString(key, null);
}
/**
* Gets a non-null value as a string by key in the wrapped map. Throws an exception if the key
* doesn't exist.
*
* @param key the non-null key
* @return the non-null value
*/
public String getRequiredString(@NonNull String key) {
return requireNonNull(getString(key, null), "Missing required attribute %s".formatted(key));
}
/**
* Gets an optional value as a string by key in the wrapped map
*
* @param key the non-null key
* @return a non-null optional
*/
public Optional getOptionalString(@NonNull String key) {
return Optional.ofNullable(getString(key, null));
}
/**
* Gets a value as a boolean by key in the wrapped map
*
* @param key the non-null key
* @return a boolean
*/
public boolean getBoolean(@NonNull String key) {
return get(key, Object.class).map(this::parseBool).orElse(false);
}
private boolean parseBool(Object value) {
if (requireNonNull(value) instanceof Boolean bool) {
return bool;
} else if (value instanceof String string) {
return Boolean.parseBoolean(string);
} else {
throw new IllegalStateException("Unexpected value: " + value);
}
}
/**
* Gets an optional value as a ContactJid by key in the wrapped map
*
* @param key the non-null key
* @return a non-null optional
*/
public Optional getJid(@NonNull String key) {
return get(key, Object.class).map(this::parseJid);
}
private ContactJid parseJid(Object value) {
if (value instanceof ContactJid jid) {
return jid;
} else if (value instanceof String encodedJid) {
return ContactJid.of(encodedJid);
} else {
throw new IllegalStateException("Unexpected value: " + value);
}
}
/**
* Copies this object
*
* @return a non-null instance
*/
public Attributes copy() {
return new Attributes(toMap);
}
/**
* Returns whether this object is empty
*
* @return a boolean
*/
public boolean isEmpty(){
return toMap.isEmpty();
}
}
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