📄 Update year in file headers
[Sone.git] / src / main / java / net / pterodactylus / sone / data / Profile.java
index 0c86732..b87ef4f 100644 (file)
@@ -1,5 +1,5 @@
 /*
- * FreenetSone - Profile.java - Copyright Â© 2010 David Roden
+ * Sone - Profile.java - Copyright Â© 2010–2020 David Roden
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
 
 package net.pterodactylus.sone.data;
 
+import static com.google.common.base.Preconditions.checkArgument;
+import static com.google.common.base.Preconditions.checkNotNull;
+import static com.google.common.base.Preconditions.checkState;
+import static java.nio.charset.StandardCharsets.UTF_8;
+
 import java.util.ArrayList;
 import java.util.Collections;
-import java.util.HashMap;
-import java.util.LinkedHashMap;
 import java.util.List;
-import java.util.Map;
+import java.util.UUID;
+
+import javax.annotation.Nonnull;
+import javax.annotation.Nullable;
 
-import net.pterodactylus.util.validation.Validation;
+import com.google.common.hash.Hasher;
+import com.google.common.hash.Hashing;
 
 /**
  * A profile stores personal information about a {@link Sone}. All information
  * is optional and can be {@code null}.
- *
- * @author <a href="mailto:bombe@pterodactylus.net">David â€˜Bombe’ Roden</a>
  */
 public class Profile implements Fingerprintable {
 
+       /** The Sone this profile belongs to. */
+       private final Sone sone;
+
        /** The first name. */
        private volatile String firstName;
 
@@ -52,17 +60,20 @@ public class Profile implements Fingerprintable {
        /** The year of the birth date. */
        private volatile Integer birthYear;
 
-       /** Additional fields in the profile. */
-       private final List<String> fields = Collections.synchronizedList(new ArrayList<String>());
+       /** The ID of the avatar image. */
+       private volatile String avatar;
 
-       /** The field values. */
-       private final Map<String, String> fieldValues = Collections.synchronizedMap(new HashMap<String, String>());
+       /** Additional fields in the profile. */
+       private final List<Field> fields = Collections.synchronizedList(new ArrayList<Field>());
 
        /**
         * Creates a new empty profile.
+        *
+        * @param sone
+        *            The Sone this profile belongs to
         */
-       public Profile() {
-               /* do nothing. */
+       public Profile(Sone sone) {
+               this.sone = sone;
        }
 
        /**
@@ -71,17 +82,16 @@ public class Profile implements Fingerprintable {
         * @param profile
         *            The profile to copy
         */
-       public Profile(Profile profile) {
-               if (profile == null) {
-                       return;
-               }
+       public Profile(@Nonnull Profile profile) {
+               this.sone = profile.sone;
                this.firstName = profile.firstName;
                this.middleName = profile.middleName;
                this.lastName = profile.lastName;
                this.birthDay = profile.birthDay;
                this.birthMonth = profile.birthMonth;
                this.birthYear = profile.birthYear;
-               this.fieldValues.putAll(profile.fieldValues);
+               this.avatar = profile.avatar;
+               this.fields.addAll(profile.fields);
        }
 
        //
@@ -89,10 +99,21 @@ public class Profile implements Fingerprintable {
        //
 
        /**
+        * Returns the Sone this profile belongs to.
+        *
+        * @return The Sone this profile belongs to
+        */
+       @Nonnull
+       public Sone getSone() {
+               return sone;
+       }
+
+       /**
         * Returns the first name.
         *
         * @return The first name
         */
+       @Nullable
        public String getFirstName() {
                return firstName;
        }
@@ -104,8 +125,9 @@ public class Profile implements Fingerprintable {
         *            The first name to set
         * @return This profile (for method chaining)
         */
-       public Profile setFirstName(String firstName) {
-               this.firstName = firstName;
+       @Nonnull
+       public Profile setFirstName(@Nullable String firstName) {
+               this.firstName = "".equals(firstName) ? null : firstName;
                return this;
        }
 
@@ -114,6 +136,7 @@ public class Profile implements Fingerprintable {
         *
         * @return The middle name
         */
+       @Nullable
        public String getMiddleName() {
                return middleName;
        }
@@ -125,8 +148,9 @@ public class Profile implements Fingerprintable {
         *            The middle name to set
         * @return This profile (for method chaining)
         */
-       public Profile setMiddleName(String middleName) {
-               this.middleName = middleName;
+       @Nonnull
+       public Profile setMiddleName(@Nullable String middleName) {
+               this.middleName = "".equals(middleName) ? null : middleName;
                return this;
        }
 
@@ -135,6 +159,7 @@ public class Profile implements Fingerprintable {
         *
         * @return The last name
         */
+       @Nullable
        public String getLastName() {
                return lastName;
        }
@@ -146,8 +171,9 @@ public class Profile implements Fingerprintable {
         *            The last name to set
         * @return This profile (for method chaining)
         */
-       public Profile setLastName(String lastName) {
-               this.lastName = lastName;
+       @Nonnull
+       public Profile setLastName(@Nullable String lastName) {
+               this.lastName = "".equals(lastName) ? null : lastName;
                return this;
        }
 
@@ -156,6 +182,7 @@ public class Profile implements Fingerprintable {
         *
         * @return The day of the birth date (from 1 to 31)
         */
+       @Nullable
        public Integer getBirthDay() {
                return birthDay;
        }
@@ -167,7 +194,8 @@ public class Profile implements Fingerprintable {
         *            The day of the birth date (from 1 to 31)
         * @return This profile (for method chaining)
         */
-       public Profile setBirthDay(Integer birthDay) {
+       @Nonnull
+       public Profile setBirthDay(@Nullable Integer birthDay) {
                this.birthDay = birthDay;
                return this;
        }
@@ -177,6 +205,7 @@ public class Profile implements Fingerprintable {
         *
         * @return The month of the birth date (from 1 to 12)
         */
+       @Nullable
        public Integer getBirthMonth() {
                return birthMonth;
        }
@@ -188,7 +217,8 @@ public class Profile implements Fingerprintable {
         *            The month of the birth date (from 1 to 12)
         * @return This profile (for method chaining)
         */
-       public Profile setBirthMonth(Integer birthMonth) {
+       @Nonnull
+       public Profile setBirthMonth(@Nullable Integer birthMonth) {
                this.birthMonth = birthMonth;
                return this;
        }
@@ -198,170 +228,180 @@ public class Profile implements Fingerprintable {
         *
         * @return The year of the birth date
         */
+       @Nullable
        public Integer getBirthYear() {
                return birthYear;
        }
 
        /**
-        * Sets the year of the birth date.
+        * Returns the ID of the currently selected avatar image.
         *
-        * @param birthYear
-        *            The year of the birth date
-        * @return This profile (for method chaining)
+        * @return The ID of the currently selected avatar image, or {@code null} if
+        *         no avatar is selected.
         */
-       public Profile setBirthYear(Integer birthYear) {
-               this.birthYear = birthYear;
-               return this;
+       @Nullable
+       public String getAvatar() {
+               return avatar;
        }
 
        /**
-        * Appends a new field to the list of fields.
+        * Sets the avatar image.
         *
-        * @param field
-        *            The field to add
-        * @throws IllegalArgumentException
-        *             if the name is not valid
+        * @param avatar
+        *            The new avatar image, or {@code null} to not select an avatar
+        *            image.
+        * @return This Sone
         */
-       public void addField(String field) throws IllegalArgumentException {
-               Validation.begin().isNotNull("Field Name", field).check().isGreater("Field Name Length", field.length(), 0).isEqual("Field Name Unique", !fields.contains(field), true).check();
-               fields.add(field);
-       }
-
-       /**
-        * Moves the field with the given index up one position in the field list.
-        * The index of the field to move must be greater than {@code 0} (because
-        * you obviously can not move the first field further up).
-        *
-        * @param fieldIndex
-        *            The index of the field to move
-        */
-       public void moveFieldUp(int fieldIndex) {
-               Validation.begin().isGreater("Field Index", fieldIndex, 0).isLess("Field Index", fieldIndex, fields.size()).check();
-               String field = fields.remove(fieldIndex);
-               fields.add(fieldIndex - 1, field);
+       @Nonnull
+       public Profile setAvatar(@Nullable Image avatar) {
+               if (avatar == null) {
+                       this.avatar = null;
+                       return this;
+               }
+               checkArgument(avatar.getSone().equals(sone), "avatar must belong to Sone");
+               this.avatar = avatar.getId();
+               return this;
        }
 
        /**
-        * Moves the field with the given name up one position in the field list.
-        * The field must not be the first field (because you obviously can not move
-        * the first field further up).
+        * Sets the year of the birth date.
         *
-        * @param field
-        *            The name of the field to move
+        * @param birthYear
+        *            The year of the birth date
+        * @return This profile (for method chaining)
         */
-       public void moveFieldUp(String field) {
-               Validation.begin().isNotNull("Field Name", field).check().isGreater("Field Name Length", field.length(), 0).isEqual("Field Name Existing", fields.contains(field), true).check();
-               moveFieldUp(getFieldIndex(field));
+       @Nonnull
+       public Profile setBirthYear(@Nullable Integer birthYear) {
+               this.birthYear = birthYear;
+               return this;
        }
 
        /**
-        * Moves the field with the given index down one position in the field list.
-        * The index of the field to move must be less than the index of the last
-        * field (because you obviously can not move the last field further down).
+        * Returns the fields of this profile.
         *
-        * @param fieldIndex
-        *            The index of the field to move
+        * @return The fields of this profile
         */
-       public void moveFieldDown(int fieldIndex) {
-               Validation.begin().isGreaterOrEqual("Field Index", fieldIndex, 0).isLess("Field Index", fieldIndex, fields.size() - 1).check();
-               String field = fields.remove(fieldIndex);
-               fields.add(fieldIndex + 1, field);
+       @Nonnull
+       public List<Field> getFields() {
+               return new ArrayList<>(fields);
        }
 
        /**
-        * Moves the field with the given name down one position in the field list.
-        * The field must not be the last field (because you obviously can not move
-        * the last field further down).
+        * Returns whether this profile contains the given field.
         *
         * @param field
-        *            The name of the field to move
-        */
-       public void moveFieldDown(String field) {
-               Validation.begin().isNotNull("Field Name", field).check().isGreater("Field Name Length", field.length(), 0).isEqual("Field Name Existing", fields.contains(field), true).check();
-               moveFieldDown(getFieldIndex(field));
-       }
-
-       /**
-        * Removes the field at the given index.
-        *
-        * @param fieldIndex
-        *            The index of the field to remove
+        *            The field to check for
+        * @return {@code true} if this profile contains the field, false otherwise
         */
-       public void removeField(int fieldIndex) {
-               Validation.begin().isGreaterOrEqual("Field Index", fieldIndex, 0).isLess("Field Index", fieldIndex, fields.size()).check();
-               String field = fields.remove(fieldIndex);
-               fieldValues.remove(field);
+       public boolean hasField(@Nonnull Field field) {
+               return fields.contains(field);
        }
 
        /**
-        * Removes the field with the given name.
+        * Returns the field with the given ID.
         *
-        * @param field
-        *            The name of the field
+        * @param fieldId
+        *            The ID of the field to get
+        * @return The field, or {@code null} if this profile does not contain a
+        *         field with the given ID
         */
-       public void removeField(String field) {
-               Validation.begin().isNotNull("Field Name", field).check().isGreater("Field Name Length", field.length(), 0).isEqual("Field Name Existing", fields.contains(field), true).check();
-               removeField(getFieldIndex(field));
+       @Nullable
+       public Field getFieldById(@Nonnull String fieldId) {
+               checkNotNull(fieldId, "fieldId must not be null");
+               for (Field field : fields) {
+                       if (field.getId().equals(fieldId)) {
+                               return field;
+                       }
+               }
+               return null;
        }
 
        /**
-        * Returns the value of the field with the given name.
+        * Returns the field with the given name.
         *
-        * @param field
-        *            The name of the field
-        * @return The value of the field, or {@code null} if there is no such field
+        * @param fieldName
+        *            The name of the field to get
+        * @return The field, or {@code null} if this profile does not contain a
+        *         field with the given name
         */
-       public String getField(String field) {
-               return fieldValues.get(field);
+       @Nullable
+       public Field getFieldByName(@Nonnull String fieldName) {
+               for (Field field : fields) {
+                       if (field.getName().equals(fieldName)) {
+                               return field;
+                       }
+               }
+               return null;
        }
 
        /**
-        * Sets the value of the field with the given name.
+        * Appends a new field to the list of fields.
         *
-        * @param fieldIndex
-        *            The index of the field
-        * @param value
-        *            The value of the field
+        * @param fieldName
+        *            The name of the new field
+        * @return The new field
+        * @throws IllegalArgumentException
+        *             if the name is not valid
         */
-       public void setField(int fieldIndex, String value) {
-               Validation.begin().isGreaterOrEqual("Field Index", fieldIndex, 0).isLess("Field Index", fieldIndex, fields.size()).check();
-               setField(fields.get(fieldIndex), value);
+       @Nonnull
+       public Field addField(@Nonnull String fieldName) throws IllegalArgumentException {
+               checkNotNull(fieldName, "fieldName must not be null");
+               if (fieldName.length() == 0) {
+                       throw new EmptyFieldName();
+               }
+               if (getFieldByName(fieldName) != null) {
+                       throw new DuplicateField();
+               }
+               @SuppressWarnings("synthetic-access")
+               Field field = new Field().setName(fieldName).setValue("");
+               fields.add(field);
+               return field;
        }
 
        /**
-        * Sets the value of the field with the given name.
+        * Moves the given field up one position in the field list. The index of the
+        * field to move must be greater than {@code 0} (because you obviously can
+        * not move the first field further up).
         *
         * @param field
-        *            The name of the field
-        * @param value
-        *            The value of the field
+        *            The field to move up
         */
-       public void setField(String field, String value) {
-               Validation.begin().isNotNull("Field Name", field).check().isGreater("Field Name Length", field.length(), 0).isEqual("Field Name Existing", fields.contains(field), true).check();
-               fieldValues.put(field, value);
+       public void moveFieldUp(@Nonnull Field field) {
+               checkNotNull(field, "field must not be null");
+               checkArgument(hasField(field), "field must belong to this profile");
+               checkArgument(getFieldIndex(field) > 0, "field index must be > 0");
+               int fieldIndex = getFieldIndex(field);
+               fields.remove(field);
+               fields.add(fieldIndex - 1, field);
        }
 
        /**
-        * Returns a list of all fields stored in this profile.
+        * Moves the given field down one position in the field list. The index of
+        * the field to move must be less than the index of the last field (because
+        * you obviously can not move the last field further down).
         *
-        * @return The fields of this profile
+        * @param field
+        *            The field to move down
         */
-       public List<String> getFieldNames() {
-               return Collections.unmodifiableList(fields);
+       public void moveFieldDown(@Nonnull Field field) {
+               checkNotNull(field, "field must not be null");
+               checkArgument(hasField(field), "field must belong to this profile");
+               checkArgument(getFieldIndex(field) < fields.size() - 1, "field index must be < " + (fields.size() - 1));
+               int fieldIndex = getFieldIndex(field);
+               fields.remove(field);
+               fields.add(fieldIndex + 1, field);
        }
 
        /**
-        * Returns all field names and their values, ordered the same way
-        * {@link #getFieldNames()} returns the names of the fields.
+        * Removes the given field.
         *
-        * @return All field names and values
+        * @param field
+        *            The field to remove
         */
-       public Map<String, String> getFields() {
-               Map<String, String> fields = new LinkedHashMap<String, String>();
-               for (String field : getFieldNames()) {
-                       fields.put(field, getField(field));
-               }
-               return fields;
+       public void removeField(@Nonnull Field field) {
+               checkNotNull(field, "field must not be null");
+               checkArgument(hasField(field), "field must belong to this profile");
+               fields.remove(field);
        }
 
        //
@@ -376,7 +416,7 @@ public class Profile implements Fingerprintable {
         * @return The index of the field, or {@code -1} if there is no field with
         *         the given name
         */
-       private int getFieldIndex(String field) {
+       private int getFieldIndex(@Nonnull Field field) {
                return fields.indexOf(field);
        }
 
@@ -389,34 +429,166 @@ public class Profile implements Fingerprintable {
         */
        @Override
        public String getFingerprint() {
-               StringBuilder fingerprint = new StringBuilder();
-               fingerprint.append("Profile(");
+               Hasher hash = Hashing.sha256().newHasher();
+               hash.putString("Profile(", UTF_8);
                if (firstName != null) {
-                       fingerprint.append("FirstName(").append(firstName).append(')');
+                       hash.putString("FirstName(", UTF_8).putString(firstName, UTF_8).putString(")", UTF_8);
                }
                if (middleName != null) {
-                       fingerprint.append("MiddleName(").append(middleName).append(')');
+                       hash.putString("MiddleName(", UTF_8).putString(middleName, UTF_8).putString(")", UTF_8);
                }
                if (lastName != null) {
-                       fingerprint.append("LastName(").append(lastName).append(')');
+                       hash.putString("LastName(", UTF_8).putString(lastName, UTF_8).putString(")", UTF_8);
                }
                if (birthDay != null) {
-                       fingerprint.append("BirthDay(").append(birthDay).append(')');
+                       hash.putString("BirthDay(", UTF_8).putInt(birthDay).putString(")", UTF_8);
                }
                if (birthMonth != null) {
-                       fingerprint.append("BirthMonth(").append(birthMonth).append(')');
+                       hash.putString("BirthMonth(", UTF_8).putInt(birthMonth).putString(")", UTF_8);
                }
                if (birthYear != null) {
-                       fingerprint.append("BirthYear(").append(birthYear).append(')');
+                       hash.putString("BirthYear(", UTF_8).putInt(birthYear).putString(")", UTF_8);
                }
-               fingerprint.append("ContactInformation(");
-               for (String field : fields) {
-                       fingerprint.append(field).append('(').append(fieldValues.get(field)).append(')');
+               if (avatar != null) {
+                       hash.putString("Avatar(", UTF_8).putString(avatar, UTF_8).putString(")", UTF_8);
                }
-               fingerprint.append(")");
-               fingerprint.append(")");
+               hash.putString("ContactInformation(", UTF_8);
+               for (Field field : fields) {
+                       hash.putString(field.getName(), UTF_8).putString("(", UTF_8).putString(field.getValue(), UTF_8).putString(")", UTF_8);
+               }
+               hash.putString(")", UTF_8);
+               hash.putString(")", UTF_8);
 
-               return fingerprint.toString();
+               return hash.hash().toString();
        }
 
+       /**
+        * Container for a profile field.
+        */
+       public class Field {
+
+               /** The ID of the field. */
+               private final String id;
+
+               /** The name of the field. */
+               private String name;
+
+               /** The value of the field. */
+               private String value;
+
+               /**
+                * Creates a new field with a random ID.
+                */
+               private Field() {
+                       this(UUID.randomUUID().toString());
+               }
+
+               /**
+                * Creates a new field with the given ID.
+                *
+                * @param id
+                *            The ID of the field
+                */
+               private Field(@Nonnull String id) {
+                       this.id = checkNotNull(id, "id must not be null");
+               }
+
+               /**
+                * Returns the ID of this field.
+                *
+                * @return The ID of this field
+                */
+               @Nonnull
+               public String getId() {
+                       return id;
+               }
+
+               /**
+                * Returns the name of this field.
+                *
+                * @return The name of this field
+                */
+               @Nonnull
+               public String getName() {
+                       return name;
+               }
+
+               /**
+                * Sets the name of this field. The name must not be {@code null} and
+                * must not match any other fields in this profile but my match the name
+                * of this field.
+                *
+                * @param name
+                *            The new name of this field
+                * @return This field
+                */
+               @Nonnull
+               public Field setName(@Nonnull String name) {
+                       checkNotNull(name, "name must not be null");
+                       checkArgument(getFieldByName(name) == null, "name must be unique");
+                       this.name = name;
+                       return this;
+               }
+
+               /**
+                * Returns the value of this field.
+                *
+                * @return The value of this field
+                */
+               @Nullable
+               public String getValue() {
+                       return value;
+               }
+
+               /**
+                * Sets the value of this field. While {@code null} is allowed, no
+                * guarantees are made that {@code null} values are correctly persisted
+                * across restarts of the plugin!
+                *
+                * @param value
+                *            The new value of this field
+                * @return This field
+                */
+               @Nonnull
+               public Field setValue(@Nullable String value) {
+                       this.value = value;
+                       return this;
+               }
+
+               //
+               // OBJECT METHODS
+               //
+
+               /**
+                * {@inheritDoc}
+                */
+               @Override
+               public boolean equals(Object object) {
+                       if (!(object instanceof Field)) {
+                               return false;
+                       }
+                       Field field = (Field) object;
+                       return id.equals(field.id);
+               }
+
+               /**
+                * {@inheritDoc}
+                */
+               @Override
+               public int hashCode() {
+                       return id.hashCode();
+               }
+
+       }
+
+       /**
+        * Exception that signals the addition of a field with an empty name.
+        */
+       public static class EmptyFieldName extends IllegalArgumentException { }
+
+       /**
+        * Exception that signals the addition of a field that already exists.
+        */
+       public static class DuplicateField extends IllegalArgumentException { }
+
 }