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#ifndef QCONTACTMANAGERENGINE_H
#define QCONTACTMANAGERENGINE_H

#include <QSharedData>
#include <QMap>
#include <QList>
#include <QString>
#include <QDateTime>
#include <QVariant>
#include <QObject>

#include "qcontact.h"
#include "qcontactdetaildefinition.h"
#include "qcontactmanager.h"
#include "qcontactabstractrequest.h"
#include "qcontactrequests.h"
#include "qcontactfetchhint.h"

QTM_BEGIN_NAMESPACE

class QContactFilter;
class QContactSortOrder;

class Q_CONTACTS_EXPORT QContactManagerEngine : public QObject
{
    Q_OBJECT

public:
    QContactManagerEngine() {}

    /* URI reporting */
    virtual QString managerName() const = 0;                       // e.g. "Symbian"
    virtual QMap<QString, QString> managerParameters() const = 0;  // e.g. "filename=private.db"
    virtual int managerVersion() const = 0;

    /* Default and only implementation of this */
    QString managerUri() const;

    /* Filtering */
    virtual QList<QContactLocalId> contactIds(const QContactFilter& filter, const QList<QContactSortOrder>& sortOrders, QContactManager::Error* error) const = 0;
    virtual QList<QContact> contacts(const QContactFilter& filter, const QList<QContactSortOrder>& sortOrders, const QContactFetchHint& fetchHint, QContactManager::Error* error) const = 0;
    virtual QContact contact(const QContactLocalId& contactId, const QContactFetchHint& fetchHint, QContactManager::Error* error) const = 0;

    virtual bool saveContact(QContact* contact, QContactManager::Error* error);
    virtual bool removeContact(const QContactLocalId& contactId, QContactManager::Error* error);
    virtual bool saveRelationship(QContactRelationship* relationship, QContactManager::Error* error);
    virtual bool removeRelationship(const QContactRelationship& relationship, QContactManager::Error* error);

    virtual bool saveContacts(QList<QContact>* contacts, QMap<int, QContactManager::Error>* errorMap, QContactManager::Error* error) = 0;
    virtual bool removeContacts(const QList<QContactLocalId>& contactIds, QMap<int, QContactManager::Error>* errorMap, QContactManager::Error* error) = 0;

    /* Return a pruned or modified contact which is valid and can be saved in the backend */
    virtual QContact compatibleContact(const QContact& original, QContactManager::Error* error) const = 0;

    /* Synthesize the display label of a contact */
    virtual QString synthesizedDisplayLabel(const QContact& contact, QContactManager::Error* error) const = 0;

    /* "Self" contact id (MyCard) */
    virtual bool setSelfContactId(const QContactLocalId& contactId, QContactManager::Error* error) = 0;
    virtual QContactLocalId selfContactId(QContactManager::Error* error) const = 0;

    /* Relationships between contacts */
    virtual QList<QContactRelationship> relationships(const QString& relationshipType, const QContactId& participantId, QContactRelationship::Role role, QContactManager::Error* error) const = 0;
    virtual bool saveRelationships(QList<QContactRelationship>* relationships, QMap<int, QContactManager::Error>* errorMap, QContactManager::Error* error) = 0;
    virtual bool removeRelationships(const QList<QContactRelationship>& relationships, QMap<int, QContactManager::Error>* errorMap, QContactManager::Error* error) = 0;

    /* Validation for saving */
    virtual bool validateContact(const QContact& contact, QContactManager::Error* error) const = 0;
    virtual bool validateDefinition(const QContactDetailDefinition& def, QContactManager::Error* error) const = 0;

    /* Definitions - Accessors and Mutators */
    virtual QMap<QString, QContactDetailDefinition> detailDefinitions(const QString& contactType, QContactManager::Error* error) const = 0;
    virtual QContactDetailDefinition detailDefinition(const QString& definitionId, const QString& contactType, QContactManager::Error* error) const = 0;
    virtual bool saveDetailDefinition(const QContactDetailDefinition& def, const QString& contactType, QContactManager::Error* error) = 0;
    virtual bool removeDetailDefinition(const QString& definitionId, const QString& contactType, QContactManager::Error* error) = 0;

    /* Asynchronous Request Support */
    virtual void requestDestroyed(QContactAbstractRequest* req) = 0;
    virtual bool startRequest(QContactAbstractRequest* req) = 0;
    virtual bool cancelRequest(QContactAbstractRequest* req) = 0;
    virtual bool waitForRequestFinished(QContactAbstractRequest* req, int msecs) = 0;

    /* Capabilities reporting */
    virtual bool hasFeature(QContactManager::ManagerFeature feature, const QString& contactType) const = 0;
    virtual bool isRelationshipTypeSupported(const QString& relationshipType, const QString& contactType) const = 0;
    virtual bool isFilterSupported(const QContactFilter& filter) const = 0;
    virtual QList<QVariant::Type> supportedDataTypes() const = 0;
    virtual QStringList supportedContactTypes() const = 0;

    /* Reports the built-in definitions from the schema */
    static QMap<QString, QMap<QString, QContactDetailDefinition> > schemaDefinitions();

Q_SIGNALS:
    void dataChanged();
    void contactsAdded(const QList<QContactLocalId>& contactIds);
    void contactsChanged(const QList<QContactLocalId>& contactIds);
    void contactsRemoved(const QList<QContactLocalId>& contactIds);
    void relationshipsAdded(const QList<QContactLocalId>& affectedContactIds);
    void relationshipsRemoved(const QList<QContactLocalId>& affectedContactIds);
    void selfContactIdChanged(const QContactLocalId& oldId, const QContactLocalId& newId);

public:
    // Async update functions
    static void updateRequestState(QContactAbstractRequest* req, QContactAbstractRequest::State state);

    static void updateContactLocalIdFetchRequest(QContactLocalIdFetchRequest* req, const QList<QContactLocalId>& result, QContactManager::Error error, QContactAbstractRequest::State);
    static void updateContactFetchRequest(QContactFetchRequest* req, const QList<QContact>& result, QContactManager::Error error, QContactAbstractRequest::State);
    static void updateContactRemoveRequest(QContactRemoveRequest* req, QContactManager::Error error, const QMap<int, QContactManager::Error>& errorMap, QContactAbstractRequest::State);
    static void updateContactSaveRequest(QContactSaveRequest* req, const QList<QContact>& result, QContactManager::Error error, const QMap<int, QContactManager::Error>& errorMap, QContactAbstractRequest::State);
    static void updateDefinitionSaveRequest(QContactDetailDefinitionSaveRequest* req, const QList<QContactDetailDefinition>& result, QContactManager::Error error, const QMap<int, QContactManager::Error>& errorMap, QContactAbstractRequest::State);
    static void updateDefinitionRemoveRequest(QContactDetailDefinitionRemoveRequest* req, QContactManager::Error error, const QMap<int, QContactManager::Error>& errorMap, QContactAbstractRequest::State);
    static void updateDefinitionFetchRequest(QContactDetailDefinitionFetchRequest* req, const QMap<QString, QContactDetailDefinition>& result, QContactManager::Error error, const QMap<int, QContactManager::Error>& errorMap, QContactAbstractRequest::State);
    static void updateRelationshipSaveRequest(QContactRelationshipSaveRequest* req, const QList<QContactRelationship>& result, QContactManager::Error error, const QMap<int, QContactManager::Error>& errorMap, QContactAbstractRequest::State);
    static void updateRelationshipRemoveRequest(QContactRelationshipRemoveRequest* req, QContactManager::Error error, const QMap<int, QContactManager::Error>& errorMap, QContactAbstractRequest::State);
    static void updateRelationshipFetchRequest(QContactRelationshipFetchRequest* req, const QList<QContactRelationship>& result, QContactManager::Error error, QContactAbstractRequest::State);

    // Other protected area update functions
    static void setDetailAccessConstraints(QContactDetail* detail, QContactDetail::AccessConstraints constraints);
    static void setContactDisplayLabel(QContact* contact, const QString& displayLabel);
    static void setContactRelationships(QContact* contact, const QList<QContactRelationship>& relationships);

    /* Helper functions */
    static int compareContact(const QContact& a, const QContact& b, const QList<QContactSortOrder>& sortOrders);
    static void addSorted(QList<QContact>* sorted, const QContact& toAdd, const QList<QContactSortOrder>& sortOrders);
    static int compareVariant(const QVariant& first, const QVariant& second, Qt::CaseSensitivity sensitivity);
    static bool testFilter(const QContactFilter& filter, const QContact& contact);
    static bool validateActionFilter(const QContactFilter& filter);
    static QList<QContactLocalId> sortContacts(const QList<QContact>& contacts, const QList<QContactSortOrder>& sortOrders);

    static QContactFilter canonicalizedFilter(const QContactFilter& filter);

private:
    /* QContactChangeSet is a utility class used to emit the appropriate signals */
    friend class QContactChangeSet;
};

QTM_END_NAMESPACE

#endif