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package org.wordpress.android.datasets;
import android.content.ContentValues;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteStatement;
import org.wordpress.android.models.ReaderComment;
import org.wordpress.android.models.ReaderPost;
import org.wordpress.android.models.ReaderUserIdList;
import org.wordpress.android.models.AccountHelper;
import org.wordpress.android.util.SqlUtils;
/**
* stores likes for Reader posts and comments
*/
public class ReaderLikeTable {
protected static void createTables(SQLiteDatabase db) {
db.execSQL("CREATE TABLE tbl_post_likes ("
+ " post_id INTEGER DEFAULT 0,"
+ " blog_id INTEGER DEFAULT 0,"
+ " user_id INTEGER DEFAULT 0,"
+ " PRIMARY KEY (blog_id, post_id, user_id))");
db.execSQL("CREATE TABLE tbl_comment_likes ("
+ " comment_id INTEGER DEFAULT 0,"
+ " blog_id INTEGER DEFAULT 0,"
+ " user_id INTEGER DEFAULT 0,"
+ " PRIMARY KEY (blog_id, comment_id, user_id))");
}
protected static void dropTables(SQLiteDatabase db) {
db.execSQL("DROP TABLE IF EXISTS tbl_post_likes");
db.execSQL("DROP TABLE IF EXISTS tbl_comment_likes");
}
protected static void reset(SQLiteDatabase db) {
dropTables(db);
createTables(db);
}
/*
* purge likes attached to posts/comments that no longer exist
*/
protected static int purge(SQLiteDatabase db) {
int numDeleted = db.delete("tbl_post_likes", "post_id NOT IN (SELECT DISTINCT post_id FROM tbl_posts)", null);
numDeleted += db.delete("tbl_comment_likes", "comment_id NOT IN (SELECT DISTINCT comment_id FROM tbl_comments)", null);
return numDeleted;
}
/*
* returns userIds of users who like the passed post
*/
public static ReaderUserIdList getLikesForPost(ReaderPost post) {
ReaderUserIdList userIds = new ReaderUserIdList();
if (post == null) {
return userIds;
}
String[] args = {Long.toString(post.blogId), Long.toString(post.postId)};
Cursor c = ReaderDatabase.getReadableDb().rawQuery("SELECT user_id FROM tbl_post_likes WHERE blog_id=? AND post_id=?", args);
try {
if (c.moveToFirst()) {
do {
userIds.add(c.getLong(0));
} while (c.moveToNext());
}
return userIds;
} finally {
SqlUtils.closeCursor(c);
}
}
public static int getNumLikesForPost(ReaderPost post) {
if (post == null) {
return 0;
}
String[] args = {Long.toString(post.blogId), Long.toString(post.postId)};
return SqlUtils.intForQuery(ReaderDatabase.getReadableDb(), "SELECT count(*) FROM tbl_post_likes WHERE blog_id=? AND post_id=?", args);
}
public static void setCurrentUserLikesPost(ReaderPost post, boolean isLiked) {
if (post == null) {
return;
}
long currentUserId = AccountHelper.getDefaultAccount().getUserId();
if (isLiked) {
ContentValues values = new ContentValues();
values.put("blog_id", post.blogId);
values.put("post_id", post.postId);
values.put("user_id", currentUserId);
ReaderDatabase.getWritableDb().insert("tbl_post_likes", null, values);
} else {
String args[] = {Long.toString(post.blogId), Long.toString(post.postId), Long.toString(currentUserId)};
ReaderDatabase.getWritableDb().delete("tbl_post_likes", "blog_id=? AND post_id=? AND user_id=?", args);
}
}
public static void setLikesForPost(ReaderPost post, ReaderUserIdList userIds) {
if (post == null) {
return;
}
SQLiteDatabase db = ReaderDatabase.getWritableDb();
db.beginTransaction();
SQLiteStatement stmt = db.compileStatement("INSERT INTO tbl_post_likes (blog_id, post_id, user_id) VALUES (?1,?2,?3)");
try {
// first delete all likes for this post
String[] args = {Long.toString(post.blogId), Long.toString(post.postId)};
db.delete("tbl_post_likes", "blog_id=? AND post_id=?", args);
// now insert the passed likes
if (userIds != null) {
stmt.bindLong(1, post.blogId);
stmt.bindLong(2, post.postId);
for (Long userId: userIds) {
stmt.bindLong(3, userId);
stmt.execute();
}
}
db.setTransactionSuccessful();
} finally {
db.endTransaction();
SqlUtils.closeStatement(stmt);
}
}
/****
* comment likes
*/
public static ReaderUserIdList getLikesForComment(ReaderComment comment) {
ReaderUserIdList userIds = new ReaderUserIdList();
if (comment == null) {
return userIds;
}
String[] args = {Long.toString(comment.blogId),
Long.toString(comment.commentId)};
Cursor c = ReaderDatabase.getReadableDb().rawQuery(
"SELECT user_id FROM tbl_comment_likes WHERE blog_id=? AND comment_id=?", args);
try {
if (c.moveToFirst()) {
do {
userIds.add(c.getLong(0));
} while (c.moveToNext());
}
return userIds;
} finally {
SqlUtils.closeCursor(c);
}
}
public static int getNumLikesForComment(ReaderComment comment) {
if (comment == null) {
return 0;
}
String[] args = {Long.toString(comment.blogId),
Long.toString(comment.commentId)};
return SqlUtils.intForQuery(ReaderDatabase.getReadableDb(),
"SELECT count(*) FROM tbl_comment_likes WHERE blog_id=? AND comment_id=?", args);
}
public static void setCurrentUserLikesComment(ReaderComment comment, boolean isLiked) {
if (comment == null) {
return;
}
long currentUserId = AccountHelper.getDefaultAccount().getUserId();
if (isLiked) {
ContentValues values = new ContentValues();
values.put("blog_id", comment.blogId);
values.put("comment_id", comment.commentId);
values.put("user_id", currentUserId);
ReaderDatabase.getWritableDb().insert("tbl_comment_likes", null, values);
} else {
String args[] = {Long.toString(comment.blogId),
Long.toString(comment.commentId),
Long.toString(currentUserId)};
ReaderDatabase.getWritableDb().delete("tbl_comment_likes",
"blog_id=? AND comment_id=? AND user_id=?", args);
}
}
public static void setLikesForComment(ReaderComment comment, ReaderUserIdList userIds) {
if (comment == null) {
return;
}
SQLiteDatabase db = ReaderDatabase.getWritableDb();
db.beginTransaction();
SQLiteStatement stmt = db.compileStatement(
"INSERT INTO tbl_comment_likes (blog_id, comment_id, user_id) VALUES (?1,?2,?3)");
try {
String[] args = {Long.toString(comment.blogId),
Long.toString(comment.commentId)};
db.delete("tbl_comment_likes", "blog_id=? AND comment_id=?", args);
if (userIds != null) {
stmt.bindLong(1, comment.blogId);
stmt.bindLong(2, comment.commentId);
for (Long userId: userIds) {
stmt.bindLong(3, userId);
stmt.execute();
}
}
db.setTransactionSuccessful();
} finally {
db.endTransaction();
SqlUtils.closeStatement(stmt);
}
}
}
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