Task.java

    /*
     * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
     *
     * Licensed under the Apache License, Version 2.0 (the "License");
     * you may not use this file except in compliance with the License.
     * You may obtain a copy of the License at
     *
     *        http://www.apache.org/licenses/LICENSE-2.0
     *
     * Unless required by applicable law or agreed to in writing, software
     * distributed under the License is distributed on an "AS IS" BASIS,
     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     * See the License for the specific language governing permissions and
     * limitations under the License.
     */

    package net.micode.notes.gtask.data;

    import android.database.Cursor;
    import android.text.TextUtils;
    import android.util.Log;

    import net.micode.notes.data.Notes;
    import net.micode.notes.data.Notes.DataColumns;
    import net.micode.notes.data.Notes.DataConstants;
    import net.micode.notes.data.Notes.NoteColumns;
    import net.micode.notes.gtask.exception.ActionFailureException;
    import net.micode.notes.tool.GTaskStringUtils;

    import org.json.JSONArray;
    import org.json.JSONException;
    import org.json.JSONObject;

    public class Task extends Node {
        private static final String TAG = Task.class.getSimpleName();

        private boolean mCompleted;

        private String mNotes;

        private JSONObject mMetaInfo;

        private Task mPriorSibling;

        private TaskList mParent;

        public Task() {
            super();
            mCompleted = false;
            mNotes = null;
            mPriorSibling = null;
            mParent = null;
            mMetaInfo = null;
        }

        public JSONObject getCreateAction(int actionId) {
            JSONObject js = new JSONObject();

            try {
                // action_type
                js.put(GTaskStringUtils.GTASK_JSON_ACTION_TYPE,
                        GTaskStringUtils.GTASK_JSON_ACTION_TYPE_CREATE);

                // action_id
                js.put(GTaskStringUtils.GTASK_JSON_ACTION_ID, actionId);

                // index
                js.put(GTaskStringUtils.GTASK_JSON_INDEX, mParent.getChildTaskIndex(this));

                // entity_delta
                JSONObject entity = new JSONObject();
                entity.put(GTaskStringUtils.GTASK_JSON_NAME, getName());
                entity.put(GTaskStringUtils.GTASK_JSON_CREATOR_ID, "null");
                entity.put(GTaskStringUtils.GTASK_JSON_ENTITY_TYPE,
                        GTaskStringUtils.GTASK_JSON_TYPE_TASK);
                if (getNotes() != null) {
                    entity.put(GTaskStringUtils.GTASK_JSON_NOTES, getNotes());
                }
                js.put(GTaskStringUtils.GTASK_JSON_ENTITY_DELTA, entity);

                // parent_id
                js.put(GTaskStringUtils.GTASK_JSON_PARENT_ID, mParent.getGid());

                // dest_parent_type
                js.put(GTaskStringUtils.GTASK_JSON_DEST_PARENT_TYPE,
                        GTaskStringUtils.GTASK_JSON_TYPE_GROUP);

                // list_id
                js.put(GTaskStringUtils.GTASK_JSON_LIST_ID, mParent.getGid());

                // prior_sibling_id
                if (mPriorSibling != null) {
                    js.put(GTaskStringUtils.GTASK_JSON_PRIOR_SIBLING_ID, mPriorSibling.getGid());
                }

            } catch (JSONException e) {
                Log.e(TAG, e.toString());
                e.printStackTrace();
                throw new ActionFailureException("fail to generate task-create jsonobject");
            }

            return js;
        }

        public JSONObject getUpdateAction(int actionId) {
            JSONObject js = new JSONObject();

            try {
                // action_type
                js.put(GTaskStringUtils.GTASK_JSON_ACTION_TYPE,
                        GTaskStringUtils.GTASK_JSON_ACTION_TYPE_UPDATE);

                // action_id
                js.put(GTaskStringUtils.GTASK_JSON_ACTION_ID, actionId);

                // id
                js.put(GTaskStringUtils.GTASK_JSON_ID, getGid());

                // entity_delta
                JSONObject entity = new JSONObject();
                entity.put(GTaskStringUtils.GTASK_JSON_NAME, getName());
                if (getNotes() != null) {
                    entity.put(GTaskStringUtils.GTASK_JSON_NOTES, getNotes());
                }
                entity.put(GTaskStringUtils.GTASK_JSON_DELETED, getDeleted());
                js.put(GTaskStringUtils.GTASK_JSON_ENTITY_DELTA, entity);

            } catch (JSONException e) {
                Log.e(TAG, e.toString());
                e.printStackTrace();
                throw new ActionFailureException("fail to generate task-update jsonobject");
            }

            return js;
        }

        public void setContentByRemoteJSON(JSONObject js) {
            if (js != null) {
                try {
                    // id
                    if (js.has(GTaskStringUtils.GTASK_JSON_ID)) {
                        setGid(js.getString(GTaskStringUtils.GTASK_JSON_ID));
                    }

                    // last_modified
                    if (js.has(GTaskStringUtils.GTASK_JSON_LAST_MODIFIED)) {
                        setLastModified(js.getLong(GTaskStringUtils.GTASK_JSON_LAST_MODIFIED));
                    }

                    // name
                    if (js.has(GTaskStringUtils.GTASK_JSON_NAME)) {
                        setName(js.getString(GTaskStringUtils.GTASK_JSON_NAME));
                    }

                    // notes
                    if (js.has(GTaskStringUtils.GTASK_JSON_NOTES)) {
                        setNotes(js.getString(GTaskStringUtils.GTASK_JSON_NOTES));
                    }

                    // deleted
                    if (js.has(GTaskStringUtils.GTASK_JSON_DELETED)) {
                        setDeleted(js.getBoolean(GTaskStringUtils.GTASK_JSON_DELETED));
                    }

                    // completed
                    if (js.has(GTaskStringUtils.GTASK_JSON_COMPLETED)) {
                        setCompleted(js.getBoolean(GTaskStringUtils.GTASK_JSON_COMPLETED));
                    }
                } catch (JSONException e) {
                    Log.e(TAG, e.toString());
                    e.printStackTrace();
                    throw new ActionFailureException("fail to get task content from jsonobject");
                }
            }
        }

        public void setContentByLocalJSON(JSONObject js) {
            if (js == null || !js.has(GTaskStringUtils.META_HEAD_NOTE)
                    || !js.has(GTaskStringUtils.META_HEAD_DATA)) {
                Log.w(TAG, "setContentByLocalJSON: nothing is avaiable");
            }

            try {
                JSONObject note = js.getJSONObject(GTaskStringUtils.META_HEAD_NOTE);
                JSONArray dataArray = js.getJSONArray(GTaskStringUtils.META_HEAD_DATA);

                if (note.getInt(NoteColumns.TYPE) != Notes.TYPE_NOTE) {
                    Log.e(TAG, "invalid type");
                    return;
                }

                for (int i = 0; i < dataArray.length(); i++) {
                    JSONObject data = dataArray.getJSONObject(i);
                    if (TextUtils.equals(data.getString(DataColumns.MIME_TYPE), DataConstants.NOTE)) {
                        setName(data.getString(DataColumns.CONTENT));
                        break;
                    }
                }

            } catch (JSONException e) {
                Log.e(TAG, e.toString());
                e.printStackTrace();
            }
        }

        public JSONObject getLocalJSONFromContent() {
            String name = getName();
            try {
                if (mMetaInfo == null) {
                    // new task created from web
                    if (name == null) {
                        Log.w(TAG, "the note seems to be an empty one");
                        return null;
                    }

                    JSONObject js = new JSONObject();
                    JSONObject note = new JSONObject();
                    JSONArray dataArray = new JSONArray();
                    JSONObject data = new JSONObject();
                    data.put(DataColumns.CONTENT, name);
                    dataArray.put(data);
                    js.put(GTaskStringUtils.META_HEAD_DATA, dataArray);
                    note.put(NoteColumns.TYPE, Notes.TYPE_NOTE);
                    js.put(GTaskStringUtils.META_HEAD_NOTE, note);
                    return js;
                } else {
                    // synced task
                    JSONObject note = mMetaInfo.getJSONObject(GTaskStringUtils.META_HEAD_NOTE);
                    JSONArray dataArray = mMetaInfo.getJSONArray(GTaskStringUtils.META_HEAD_DATA);

                    for (int i = 0; i < dataArray.length(); i++) {
                        JSONObject data = dataArray.getJSONObject(i);
                        if (TextUtils.equals(data.getString(DataColumns.MIME_TYPE), DataConstants.NOTE)) {
                            data.put(DataColumns.CONTENT, getName());
                            break;
                        }
                    }

                    note.put(NoteColumns.TYPE, Notes.TYPE_NOTE);
                    return mMetaInfo;
                }
            } catch (JSONException e) {
                Log.e(TAG, e.toString());
                e.printStackTrace();
                return null;
            }
        }

        public void setMetaInfo(MetaData metaData) {
            if (metaData != null && metaData.getNotes() != null) {
                try {
                    mMetaInfo = new JSONObject(metaData.getNotes());
                } catch (JSONException e) {
                    Log.w(TAG, e.toString());
                    mMetaInfo = null;
                }
            }
        }

        public int getSyncAction(Cursor c) {
            try {
                JSONObject noteInfo = null;
                if (mMetaInfo != null && mMetaInfo.has(GTaskStringUtils.META_HEAD_NOTE)) {
                    noteInfo = mMetaInfo.getJSONObject(GTaskStringUtils.META_HEAD_NOTE);
                }

                if (noteInfo == null) {
                    Log.w(TAG, "it seems that note meta has been deleted");
                    return SYNC_ACTION_UPDATE_REMOTE;
                }

                if (!noteInfo.has(NoteColumns.ID)) {
                    Log.w(TAG, "remote note id seems to be deleted");
                    return SYNC_ACTION_UPDATE_LOCAL;
                }

                // validate the note id now
                if (c.getLong(SqlNote.ID_COLUMN) != noteInfo.getLong(NoteColumns.ID)) {
                    Log.w(TAG, "note id doesn't match");
                    return SYNC_ACTION_UPDATE_LOCAL;
                }

                if (c.getInt(SqlNote.LOCAL_MODIFIED_COLUMN) == 0) {
                    // there is no local update
                    if (c.getLong(SqlNote.SYNC_ID_COLUMN) == getLastModified()) {
                        // no update both side
                        return SYNC_ACTION_NONE;
                    } else {
                        // apply remote to local
                        return SYNC_ACTION_UPDATE_LOCAL;
                    }
                } else {
                    // validate gtask id
                    if (!c.getString(SqlNote.GTASK_ID_COLUMN).equals(getGid())) {
                        Log.e(TAG, "gtask id doesn't match");
                        return SYNC_ACTION_ERROR;
                    }
                    if (c.getLong(SqlNote.SYNC_ID_COLUMN) == getLastModified()) {
                        // local modification only
                        return SYNC_ACTION_UPDATE_REMOTE;
                    } else {
                        return SYNC_ACTION_UPDATE_CONFLICT;
                    }
                }
            } catch (Exception e) {
                Log.e(TAG, e.toString());
                e.printStackTrace();
            }

            return SYNC_ACTION_ERROR;
        }

        public boolean isWorthSaving() {
            return mMetaInfo != null || (getName() != null && getName().trim().length() > 0)
                    || (getNotes() != null && getNotes().trim().length() > 0);
        }

        public void setCompleted(boolean completed) {
            this.mCompleted = completed;
        }

        public void setNotes(String notes) {
            this.mNotes = notes;
        }

        public void setPriorSibling(Task priorSibling) {
            this.mPriorSibling = priorSibling;
        }

        public void setParent(TaskList parent) {
            this.mParent = parent;
        }

        public boolean getCompleted() {
            return this.mCompleted;
        }

        public String getNotes() {
            return this.mNotes;
        }

        public Task getPriorSibling() {
            return this.mPriorSibling;
        }

        public TaskList getParent() {
            return this.mParent;
        }

    }