/*
 * This library is part of OpenCms -
 * the Open Source Content Management System
 *
 * Copyright (c) Alkacon Software GmbH & Co. KG (http://www.alkacon.com)
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * For further information about Alkacon Software GmbH & Co. KG, please see the
 * company website: http://www.alkacon.com
 *
 * For further information about OpenCms, please see the
 * project website: http://www.opencms.org
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

package org.opencms.workplace;

import org.opencms.ade.galleries.shared.CmsGallerySearchScope;
import org.opencms.ade.galleries.shared.I_CmsGalleryProviderConstants.SortParams;
import org.opencms.db.CmsPublishList;
import org.opencms.db.CmsUserSettings;
import org.opencms.file.CmsObject;
import org.opencms.file.CmsResource;
import org.opencms.file.CmsUser;
import org.opencms.file.collectors.I_CmsResourceCollector;
import org.opencms.i18n.CmsMessageContainer;
import org.opencms.main.CmsException;
import org.opencms.main.CmsLog;
import org.opencms.main.OpenCms;
import org.opencms.util.CmsUUID;
import org.opencms.workplace.tools.CmsToolUserData;

import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;

import org.apache.commons.logging.Log;

/**
 * Object to conveniently access and modify the state of the workplace for a user,
 * will be stored in the session of a user.<p>
 *
 * @since 6.0.0
 */
public class CmsWorkplaceSettings {

    /** Log instance for this class. */
    private static final Log LOG = CmsLog.getLog(CmsWorkplaceSettings.class);

    /** The resource collector. */
    private I_CmsResourceCollector m_collector;

    /** The current site. */
    private String m_currentSite;

    /** The diaolg object. */
    private Object m_dialogObject;

    /** The error messages. */
    private CmsMessageContainer m_errorMessage;

    /** The explorer URL. */
    private String m_explorerFlaturl;

    /** The explorer mode. */
    private String m_explorerMode;

    /** The explorer page. */
    private int m_explorerPage;

    /** The explorer project filter. */
    private String m_explorerProjectFilter;

    /** The explorer project id. */
    private CmsUUID m_explorerProjectId;

    /** The explorer resource. */
    private Map<String, String> m_explorerResource;

    /** The frame URIs. */
    private Map<String, String> m_frameUris;

    /** The gallery type. */
    private String m_galleryType;

    /** The last used galleries. */
    private Map<String, String> m_lastUsedGalleries;

    /** Map of last used gallery search result orders, where the map keys correspond to different usages of galleries. */
    private Map<String, SortParams> m_lastUsedGalleryResultOrder = new ConcurrentHashMap<>();

    /** The list object. */
    private Object m_listObject;

    /** The permission detail view. */
    private String m_permissionDetailView;

    /** The project id. */
    private CmsUUID m_project;

    /** The publish list. */
    private CmsPublishList m_publishList;

    /** The gallery search scope. */
    private CmsGallerySearchScope m_scope;

    /** The tool user data. */
    private CmsToolUserData m_toolUserData;

    /** The tree site. */
    private Map<String, String> m_treeSite;

    /** The tree type. */
    private Map<String, String> m_treeType;

    /** The user. */
    private CmsUser m_user;

    /** The user agreement accepted flag. */
    private boolean m_userAgreementAccepted;

    /** The user settings. */
    private CmsUserSettings m_userSettings;

    /** The startup view. */
    private String m_viewStartup;

    /** The view URI. */
    private String m_viewUri;

    /**
     * Constructor, only package visible.<p>
     */
    CmsWorkplaceSettings() {

        m_explorerPage = 1;
        m_explorerResource = new HashMap<String, String>();
        m_treeType = new HashMap<String, String>();
        m_treeSite = new HashMap<String, String>();
        m_frameUris = new HashMap<String, String>();
        m_lastUsedGalleries = new HashMap<String, String>();
        m_currentSite = OpenCms.getSiteManager().getDefaultSite().getSiteRoot();
    }

    /**
     * Returns the collector object.<p>
     *
     * Use this mechanism for transferring a resource collector between
     * several page instances of an interactive dialog. <p>
     *
     * @return the dialog object
     */
    public I_CmsResourceCollector getCollector() {

        return m_collector;
    }

    /**
     * Returns the dialog object.<p>
     *
     * Use this mechanism for transferring a complex object between
     * several page instances of an interactive dialog. This is usually
     * required when editing a complex object in a dialog of the "Administration" view.<p>
     *
     * @return the dialog object
     */
    public Object getDialogObject() {

        return m_dialogObject;
    }

    /**
     * Returns the error message to display in the workplace.<p>
     *
     * @return the error message to display in the workplace
     */
    public CmsMessageContainer getErrorMessage() {

        return m_errorMessage;
    }

    /**
     * Returns the explorer flat url.<p>
     *
     * @return the explorer flat url
     */
    public String getExplorerFlaturl() {

        return m_explorerFlaturl;
    }

    /**
     * Returns the current explorer mode.<p>
     *
     * @return the current explorer mode
     */
    public String getExplorerMode() {

        return m_explorerMode;
    }

    /**
     * Returns the currently selected page in the explorer view.<p>
     *
     * @return the currently selected page in the explorer view
     */
    public int getExplorerPage() {

        return m_explorerPage;
    }

    /**
     * Gets the explorer project filter for the project view.<p>
     *
     * This parameter is used in the administration to filter
     * files belonging to a project.
     *
     * @return the explorer project filter
     */
    public String getExplorerProjectFilter() {

        return m_explorerProjectFilter;
    }

    /**
     * Gets the explorer project id for the project view.<p>
     *
     * This parameter is used in the administration to filter
     * files belonging to a selected project.
     *
     * @return the explorer project id
     */
    public CmsUUID getExplorerProjectId() {

        return m_explorerProjectId;
    }

    /**
     * Returns the current resource to be displayed in the explorer.<p>
     *
     * @return the current resource to be displayed in the explorer
     */
    public String getExplorerResource() {

        // get the current explorer mode
        String mode = getExplorerMode();
        if (mode == null) {
            mode = CmsWorkplace.VIEW_EXPLORER;
        }
        if (CmsWorkplace.VIEW_EXPLORER.equals(mode)) {
            // append the current site to the key when in explorer view mode
            mode += "_" + getSite() + "/";
        }
        // get the resource for the given mode
        String resource = m_explorerResource.get(mode);
        if (resource == null) {
            resource = "/";
        }
        return resource;
    }

    /**
     * Returns the frame URIs of the currently loaded frameset, with the frame names as keys.<p>
     *
     * @return the frame URIs of the currently loaded frameset
     */
    public Map<String, String> getFrameUris() {

        return m_frameUris;
    }

    /**
     * Returns the current gallery type name.<p>
     *
     * @return the current gallery type name
     */
    public String getGalleryType() {

        return m_galleryType;
    }

    /**
     * Gets the last result sort order for the gallery dialog and a particular usage type.
     *
     * <p>If the key is null, the default order will be returned.
     *
     * @param key the usage type of galleries (see the RESULT_ORDER_* constants in CmsGalleryService)
     * @return the last sort order
     */
    public SortParams getLastGalleryResultOrder(String key) {

        if (key == null) {
            return SortParams.dateLastModified_desc;
        }

        SortParams result = m_lastUsedGalleryResultOrder.getOrDefault(key, SortParams.dateLastModified_desc);
        return result;
    }

    /**
     * Returns the last gallery search scope.<p>
     *
     * @return the last gallery search scope
     */
    public CmsGallerySearchScope getLastSearchScope() {

        if (m_scope == null) {
            return OpenCms.getWorkplaceManager().getGalleryDefaultScope();
        }
        return m_scope;
    }

    /**
     * Returns the last saved gallery for the given gallery key.<p>
     *
     * @param galleryKey the key for which to look up the gallery
     * @return the last saved gallery for the given gallery key
     **/
    public String getLastUsedGallery(String galleryKey) {

        String result = m_lastUsedGalleries.get(galleryKey);
        LOG.info("user=" + m_user.getName() + ": getLastUsedGallery " + galleryKey + " : returning " + result);
        return result;
    }

    /**
     * Returns the list dialog object.<p>
     *
     * Use this mechanism for transfering a html list object between
     * several page instances of an interactive dialog. This is usually
     * required when having several lists in a tool or when a list action
     * another list displays of the "Administration" view.<p>
     *
     * @return the dialog object
     *
     * @see org.opencms.workplace.list.A_CmsListDialog#getListObject(Class, CmsWorkplaceSettings)
     */
    public Object getListObject() {

        return m_listObject;
    }

    /**
     * Returns the current detail grade of the view.<p>
     *
     * @return value of the details.
     */
    public String getPermissionDetailView() {

        return m_permissionDetailView;
    }

    /**
     * Returns the currently selected project of the workplace user.<p>
     *
     * @return the currently selected project of the workplace user
     */
    public CmsUUID getProject() {

        return m_project;
    }

    /**
     * Returns the publish list.<p>
     *
     * @return the publishList
     */
    public CmsPublishList getPublishList() {

        return m_publishList;
    }

    /**
     * Returns the current site for the user.<p>
     *
     * @return the current site for the user
     */
    public String getSite() {

        return m_currentSite;
    }

    /**
     * Returns the new admin view tool User Data.<p>
     *
     * @return the tool User Data
     */
    public CmsToolUserData getToolUserData() {

        return m_toolUserData;
    }

    /**
     * Returns the tree resource uri for the specified tree type.<p>
     *
     * @param type the type of the tree
     * @return the tree resource uri for the specified tree type
     */
    public String getTreeResource(String type) {

        String result = m_treeType.get(type);
        if (result == null) {
            result = "/";
        }
        return result;
    }

    /**
     * Returns the tree site uri for the specified tree type.<p>
     *
     * @param type the type of the tree
     * @return the tree site uri for the specified tree type
     */
    public String getTreeSite(String type) {

        String result = m_treeSite.get(type);
        return result;
    }

    /**
     * Returns the current workplace user.<p>
     *
     * @return the current workplace user
     */
    public CmsUser getUser() {

        return m_user;
    }

    /**
     * Returns the current workplace user settings object.<p>
     *
     * @return the current workplace user settings object
     */
    public CmsUserSettings getUserSettings() {

        return m_userSettings;
    }

    /**
     * Returns the view startup page.<p>
     *
     * The view startup page can be used to directly load a specific workplace dialog or other workplace resource in the
     * OpenCms workplace base frameset after the user logs in.<p>
     *
     * @return the view startup page
     */
    public String getViewStartup() {

        return m_viewStartup;
    }

    /**
     * Returns the current view Uri selected in the workplace.<p>
     *
     * @return the current view Uri selected in the workplace
     */
    public String getViewUri() {

        return m_viewUri;
    }

    /**
     * Returns if the user agreement has been accepted in the current workplace session.<p>
     *
     * @return <code>true</code> if the user agreement has been accepted in the current workplace session, otherwise <code>false</code>
     */
    public boolean isUserAgreementAccepted() {

        return m_userAgreementAccepted;
    }

    /**
     * Checks if the current view is the explorer view.<p>
     *
     * @return true if the current view is the explorer view, otherwise false
     */
    public boolean isViewExplorer() {

        return getViewUri().endsWith(CmsWorkplace.FILE_EXPLORER_FILELIST);
    }

    /**
     * Sets the collector object.<p>
     *
     * Use this mechanism for transferring a resource collector between
     * several page instances of an interactive dialog.<p>
     *
     * @param collector the dialog object to set
     */
    public void setCollector(I_CmsResourceCollector collector) {

        m_collector = collector;
    }

    /**
     * Sets the dialog object.<p>
     *
     * Use this mechanism for transferring a complex object between
     * several page instances of an interactive dialog. This is usually
     * required when editing a complex object in a dialog of the "Administration" view.<p>
     *
     * @param dialogObject the dialog object to set
     */
    public void setDialogObject(Object dialogObject) {

        m_dialogObject = dialogObject;
    }

    /**
     * Sets the error message to display in the workplace.<p>
     *
     * @param errorMessage the error message to display in the workplace
     */
    public void setErrorMessage(CmsMessageContainer errorMessage) {

        m_errorMessage = errorMessage;
    }

    /**
     * Sets the explorer flat url.<p>
     *
     * @param value the explorer flat url
     */
    public void setExplorerFlaturl(String value) {

        m_explorerFlaturl = value;
    }

    /**
     * Sets the current explorer mode.<p>
     *
     * @param value the current explorer mode
     */
    public void setExplorerMode(String value) {

        m_explorerMode = value;
    }

    /**
     * Sets the currently selected page in the explorer view.<p>
     *
     * @param page the currently selected page in the explorer view
     */
    public void setExplorerPage(int page) {

        m_explorerPage = page;
    }

    /**
     * Sets the explorer project filter for the project view.<p>
     *
     * @param value the explorer project filter
     */
    public void setExplorerProjectFilter(String value) {

        m_explorerProjectFilter = value;
    }

    /**
     * Sets the explorer project id for the project view.<p>
     *
     * @param value the explorer project id
     */
    public void setExplorerProjectId(CmsUUID value) {

        m_explorerProjectId = value;
    }

    /**
     * Sets the current resource to be displayed in the explorer.<p>
     *
     * @param value the current resource to be displayed in the explorer
     *
     * @deprecated use {@link #setExplorerResource(String, CmsObject)} instead
     */
    @Deprecated
    public void setExplorerResource(String value) {

        setExplorerResource(value, null);
    }

    /**
     * Sets the current resource to be displayed in the explorer.<p>
     *
     * @param value the current resource to be displayed in the explorer
     *
     * @param cms needed for validation / normalization of the given path
     */
    public void setExplorerResource(String value, CmsObject cms) {

        if (value == null) {
            return;
        }
        // get the current explorer mode
        String mode = getExplorerMode();
        if (mode == null) {
            mode = CmsWorkplace.VIEW_EXPLORER;
        }
        if (CmsWorkplace.VIEW_EXPLORER.equals(mode)) {
            // append the current site to the key when in explorer view mode
            mode += "_" + getSite() + "/";
        }

        // set the resource for the given mode
        if (value.startsWith(CmsResource.VFS_FOLDER_SYSTEM + "/")
            && (!value.startsWith(m_currentSite))
            && (!CmsWorkplace.VIEW_GALLERY.equals(getExplorerMode()))) {
            // restrict access to /system/
            m_explorerResource.put(mode, "/");
        } else {
            if (cms != null) {
                // Validation with read resource has 2 advantages:
                // 1: Normalization of the path: a missing trailing slash is not fatal.
                // 2: existence is verified.
                try {
                    CmsResource resource = cms.readResource(value);
                    value = cms.getSitePath(resource);
                } catch (CmsException cme) {
                    // nop
                }
            }
            m_explorerResource.put(mode, value);
        }
    }

    /**
     * Sets the current gallery type name.<p>
     *
     * @param currentGallery the current gallery type name to set
     */
    public void setGalleryType(String currentGallery) {

        m_galleryType = currentGallery;
    }

    /**
     * Sets the last sort order used for the gallery results for a particular usage type.<p>
     *
     * If the key is null, nothing will be saved.
     *
     * @param key the usage type of galleries (see the RESULT_ORDER_* constants in CmsGalleryService)
     * @param order the last sort order
     */
    public void setLastGalleryResultOrder(String key, SortParams order) {

        if (key == null) {
            return;
        }
        if (order != null) {
            m_lastUsedGalleryResultOrder.put(key, order);
        } else {
            m_lastUsedGalleryResultOrder.remove(key);
        }
    }

    /**
     * Sets the last gallery search scope.<p>
     *
     * @param scope the gallery search scope
     */
    public void setLastSearchScope(CmsGallerySearchScope scope) {

        m_scope = scope;
    }

    /**
     * Saves the last gallery for a given key.<p>
     *
     * @param galleryKey the gallery key
     * @param gallerypath the resourcepath of the gallery
     */
    public void setLastUsedGallery(String galleryKey, String gallerypath) {

        m_lastUsedGalleries.put(galleryKey, gallerypath);
        LOG.info("user=" + m_user.getName() + ": setLastUsedGallery " + galleryKey + " -> " + gallerypath);
    }

    /**
     * Sets the list object.<p>
     *
     * Use this mechanism for transfering a html list object between
     * several page instances of an interactive dialog. This is usually
     * required when having several lists in a tool or when a list action
     * another list displays of the "Administration" view.<p>
     *
     * @param listObject the list object to set
     *
     * @see org.opencms.workplace.list.A_CmsListDialog#setListObject(Class, org.opencms.workplace.list.CmsHtmlList)
     */
    public void setListObject(Object listObject) {

        m_listObject = listObject;
    }

    /**
     * Sets the current detail grade of the view.<p>
     *
     * @param value the current details.
     */
    public void setPermissionDetailView(String value) {

        m_permissionDetailView = value;
    }

    /**
     * Sets the currently selected project of the workplace user.<p>
     *
     * @param project the currently selected project of thw workplace user
     */
    public void setProject(CmsUUID project) {

        m_project = project;
    }

    /**
     * Sets the publish list.<p>
     *
     * @param publishList the publishList to set
     */
    public void setPublishList(CmsPublishList publishList) {

        m_publishList = publishList;
    }

    /**
     * Sets the current site for the user.<p>
     *
     * @param value the current site for the user
     */
    public void setSite(String value) {

        if ((value != null) && !value.equals(m_currentSite)) {
            m_currentSite = value;
            m_treeType = new HashMap<String, String>();
        }
    }

    /**
     * Sets the new admin view tool User Data.<p>
     *
     * @param toolUserData the tool User Data to set
     */
    public void setToolUserData(CmsToolUserData toolUserData) {

        m_toolUserData = toolUserData;
    }

    /**
     * Sets the tree resource uri for the specified tree type.<p>
     *
     * @param type the type of the tree
     * @param value the resource uri to set for the type
     */
    public void setTreeResource(String type, String value) {

        if (value == null) {
            return;
        }
        if (value.startsWith(CmsResource.VFS_FOLDER_SYSTEM + "/") && (!value.startsWith(m_currentSite))) {
            // restrict access to /system/
            value = "/";
        }
        m_treeType.put(type, value);
    }

    /**
     * Sets the tree resource uri for the specified tree type.<p>
     *
     * @param type the type of the tree
     * @param value the resource uri to set for the type
     */
    public void setTreeSite(String type, String value) {

        if (value == null) {
            return;
        }
        m_treeSite.put(type, value);
    }

    /**
     * Sets the current workplace user.<p>
     *
     * @param user the current workplace user
     */
    public void setUser(CmsUser user) {

        m_user = user;
    }

    /**
     * Sets if the user agreement has been accepted in the current workplace session.<p>
     *
     * @param userAgreementAccepted <code>true</code> if the user agreement has been accepted in the current workplace session, otherwise <code>false</code>
     */
    public void setUserAgreementAccepted(boolean userAgreementAccepted) {

        m_userAgreementAccepted = userAgreementAccepted;
    }

    /**
     * Sets the current workplace user settings object.<p>
     *
     * @param userSettings the current workplace user settings object
     */
    public void setUserSettings(CmsUserSettings userSettings) {

        m_userSettings = userSettings;
    }

    /**
     * Sets the view startup page.<p>
     *
     * The view startup page can be used to directly load a specific workplace dialog or other workplace resource in the
     * OpenCms workplace base frameset after the user logs in.<p>
     *
     * @param viewStartup the view startup page to set
     */
    public void setViewStartup(String viewStartup) {

        m_viewStartup = viewStartup;
    }

    /**
     * Sets the view Uri for the workplace.<p>
     *
     * @param string the view Uri for the workplace
     */
    public void setViewUri(String string) {

        m_viewUri = string;
    }

}