/*
 * Copyright (c) 2013 Cisco Systems, Inc. and others.  All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
 * and is available at http://www.eclipse.org/legal/epl-v10.html
 */
package org.opendaylight.yangtools.yang.parser.builder.impl;

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

import org.opendaylight.yangtools.yang.common.QName;
import org.opendaylight.yangtools.yang.model.api.ConstraintDefinition;
import org.opendaylight.yangtools.yang.model.api.LeafListSchemaNode;
import org.opendaylight.yangtools.yang.model.api.SchemaPath;
import org.opendaylight.yangtools.yang.model.api.Status;
import org.opendaylight.yangtools.yang.model.api.TypeDefinition;
import org.opendaylight.yangtools.yang.model.api.UnknownSchemaNode;
import org.opendaylight.yangtools.yang.parser.builder.api.AbstractTypeAwareBuilder;
import org.opendaylight.yangtools.yang.parser.builder.api.DataSchemaNodeBuilder;
import org.opendaylight.yangtools.yang.parser.util.Comparators;

public final class LeafListSchemaNodeBuilder extends AbstractTypeAwareBuilder implements DataSchemaNodeBuilder {
    private boolean isBuilt;
    private final LeafListSchemaNodeImpl instance;
    // SchemaNode args
    private SchemaPath schemaPath;
    // DataSchemaNode args
    private final ConstraintsBuilder constraints;

    public LeafListSchemaNodeBuilder(final String moduleName, final int line, final QName qname, final SchemaPath path) {
        super(moduleName, line, qname);
        this.schemaPath = path;
        instance = new LeafListSchemaNodeImpl(qname, path);
        constraints = new ConstraintsBuilder(moduleName, line);
    }

    public LeafListSchemaNodeBuilder(final String moduleName, final int line, final QName qname, final SchemaPath path, final LeafListSchemaNode base) {
        super(moduleName, line, qname);
        schemaPath = path;
        instance = new LeafListSchemaNodeImpl(qname, path);
        constraints = new ConstraintsBuilder(moduleName, line, base.getConstraints());

        instance.description = base.getDescription();
        instance.reference = base.getReference();
        instance.status = base.getStatus();
        instance.augmenting = base.isAugmenting();
        instance.addedByUses = base.isAddedByUses();
        instance.configuration = base.isConfiguration();
        instance.constraintsDef = base.getConstraints();
        this.type = base.getType();
        instance.userOrdered = base.isUserOrdered();
        instance.unknownNodes.addAll(base.getUnknownSchemaNodes());
    }

    @Override
    public LeafListSchemaNode build() {
        if (!isBuilt) {
            instance.setConstraints(constraints.build());

            if (type == null) {
                instance.setType(typedef.build());
            } else {
                instance.setType(type);
            }

            // UNKNOWN NODES
            for (UnknownSchemaNodeBuilder b : addedUnknownNodes) {
                unknownNodes.add(b.build());
            }
            Collections.sort(unknownNodes, Comparators.SCHEMA_NODE_COMP);
            instance.addUnknownSchemaNodes(unknownNodes);

            isBuilt = true;
        }
        return instance;
    }

    @Override
    public SchemaPath getPath() {
        return schemaPath;
    }

    @Override
    public void setPath(SchemaPath path) {
        instance.path = path;
    }

    @Override
    public String getDescription() {
        return instance.description;
    }

    @Override
    public void setDescription(final String description) {
        instance.description = description;
    }

    @Override
    public String getReference() {
        return instance.reference;
    }

    @Override
    public void setReference(final String reference) {
        instance.reference = reference;
    }

    @Override
    public Status getStatus() {
        return instance.status;
    }

    @Override
    public void setStatus(Status status) {
        if (status != null) {
            instance.status = status;
        }
    }

    @Override
    public boolean isAugmenting() {
        return instance.augmenting;
    }

    @Override
    public void setAugmenting(boolean augmenting) {
        instance.augmenting = augmenting;
    }

    @Override
    public boolean isAddedByUses() {
        return instance.addedByUses;
    }

    @Override
    public void setAddedByUses(final boolean addedByUses) {
        instance.addedByUses = addedByUses;
    }

    @Override
    public Boolean isConfiguration() {
        return instance.configuration;
    }

    @Override
    public void setConfiguration(Boolean configuration) {
        instance.configuration = configuration;
    }

    @Override
    public ConstraintsBuilder getConstraints() {
        return constraints;
    }

    public boolean isUserOrdered() {
        return instance.userOrdered;
    }

    public void setUserOrdered(final boolean userOrdered) {
        instance.userOrdered = userOrdered;
    }

    @Override
    public int hashCode() {
        final int prime = 31;
        int result = 1;
        result = prime * result + ((schemaPath == null) ? 0 : schemaPath.hashCode());
        return result;
    }

    @Override
    public boolean equals(Object obj) {
        if (this == obj) {
            return true;
        }
        if (obj == null) {
            return false;
        }
        if (getClass() != obj.getClass()) {
            return false;
        }
        LeafListSchemaNodeBuilder other = (LeafListSchemaNodeBuilder) obj;
        if (schemaPath == null) {
            if (other.schemaPath != null) {
                return false;
            }
        } else if (!schemaPath.equals(other.schemaPath)) {
            return false;
        }
        if (parentBuilder == null) {
            if (other.parentBuilder != null) {
                return false;
            }
        } else if (!parentBuilder.equals(other.parentBuilder)) {
            return false;
        }
        return true;
    }

    @Override
    public String toString() {
        return "leaf-list " + qname.getLocalName();
    }

    private final class LeafListSchemaNodeImpl implements LeafListSchemaNode {
        private final QName qname;
        private SchemaPath path;
        private String description;
        private String reference;
        private Status status = Status.CURRENT;
        private boolean augmenting;
        private boolean addedByUses;
        private boolean configuration;
        private ConstraintDefinition constraintsDef;
        private TypeDefinition<?> type;
        private boolean userOrdered;
        private final List<UnknownSchemaNode> unknownNodes = new ArrayList<>();

        private LeafListSchemaNodeImpl(final QName qname, final SchemaPath path) {
            this.qname = qname;
            this.path = path;
        }

        @Override
        public QName getQName() {
            return qname;
        }

        @Override
        public SchemaPath getPath() {
            return path;
        }

        @Override
        public String getDescription() {
            return description;
        }

        @Override
        public String getReference() {
            return reference;
        }

        @Override
        public Status getStatus() {
            return status;
        }

        @Override
        public boolean isAugmenting() {
            return augmenting;
        }

        @Override
        public boolean isAddedByUses() {
            return addedByUses;
        }

        @Override
        public boolean isConfiguration() {
            return configuration;
        }

        @Override
        public ConstraintDefinition getConstraints() {
            return constraintsDef;
        }

        private void setConstraints(ConstraintDefinition constraintsDef) {
            this.constraintsDef = constraintsDef;
        }

        @Override
        public TypeDefinition<?> getType() {
            return type;
        }

        public void setType(TypeDefinition<? extends TypeDefinition<?>> type) {
            this.type = type;
        }

        @Override
        public boolean isUserOrdered() {
            return userOrdered;
        }

        @Override
        public List<UnknownSchemaNode> getUnknownSchemaNodes() {
            return Collections.unmodifiableList(unknownNodes);
        }

        private void addUnknownSchemaNodes(List<UnknownSchemaNode> unknownNodes) {
            if (unknownNodes != null) {
                this.unknownNodes.addAll(unknownNodes);
            }
        }

        @Override
        public int hashCode() {
            final int prime = 31;
            int result = 1;
            result = prime * result + ((qname == null) ? 0 : qname.hashCode());
            result = prime * result + ((path == null) ? 0 : path.hashCode());
            return result;
        }

        @Override
        public boolean equals(Object obj) {
            if (this == obj) {
                return true;
            }
            if (obj == null) {
                return false;
            }
            if (getClass() != obj.getClass()) {
                return false;
            }
            LeafListSchemaNodeImpl other = (LeafListSchemaNodeImpl) obj;
            if (qname == null) {
                if (other.qname != null) {
                    return false;
                }
            } else if (!qname.equals(other.qname)) {
                return false;
            }
            if (path == null) {
                if (other.path != null) {
                    return false;
                }
            } else if (!path.equals(other.path)) {
                return false;
            }
            return true;
        }

        @Override
        public String toString() {
            StringBuilder sb = new StringBuilder(LeafListSchemaNodeImpl.class.getSimpleName());
            sb.append("[");
            sb.append(qname);
            sb.append("]");
            return sb.toString();
        }
    }

}