boards.find = function(id) {
var addProperty = function(key, keyName) {
return db.metadata.getAsync(key)
.then(function(value) {
if (_.isNumber(board[keyName]) && _.isNumber(value)) {
board[keyName] += Number(value);
}
else if (_.isNumber(value)) {
board[keyName] = Number(value);
}
else if (_.isString(value)) {
board[keyName] = value;
}
});
};
var board;
var boardKey = Board.key(id);
var postCountKey = Board.postCountKey(id);
var threadCountKey = Board.threadCountKey(id);
var totalPostCountKey = Board.totalPostCountKey(id);
var totalThreadCountKey = Board.totalThreadCountKey(id);
var lastPostUsernameKey = Board.lastPostUsernameKey(id);
var lastPostCreatedAtKey = Board.lastPostCreatedAtKey(id);
var lastThreadTitleKey = Board.lastThreadTitleKey(id);
var lastThreadIdKey = Board.lastThreadIdKey(id);
return db.content.getAsync(boardKey)
.then(function(boardDb) {
board = boardDb;
board.post_count = 0;
board.thread_count = 0;
if (board.children_ids && board.children_ids.length > 0) {
board.children = [];
return Promise.all(board.children_ids.map(function(childId) {
return boards.find(childId)
.then(function(childBoard) {
board.children.push(childBoard);
});
}));
}
})
.then(function() {
return Promise.join(
addProperty(postCountKey, 'post_count'),
addProperty(threadCountKey, 'thread_count'),
addProperty(totalPostCountKey, 'total_post_count'),
addProperty(totalThreadCountKey, 'total_thread_count'),
addProperty(lastPostUsernameKey, 'last_post_username'),
addProperty(lastPostCreatedAtKey, 'last_post_created_at'),
addProperty(lastThreadTitleKey, 'last_thread_title'),
addProperty(lastThreadIdKey, 'last_thread_id'),
function() { return board; });
});
};
boards.create = function(board) {
// insert into db
var timestamp = Date.now();
if (!board.created_at) {
board.created_at = timestamp;
board.updated_at = timestamp;
}
else if (!board.updated_at) {
board.updated_at = board.created_at;
}
board.id = helper.genId(board.created_at);
var boardKey = Board.key(board.id);
var boardLastPostUsernameKey = Board.lastPostUsernameKey(board.id);
var boardLastPostCreatedAtKey = Board.lastPostCreatedAtKey(board.id);
var boardLastThreadTitleKey = Board.lastThreadTitleKey(board.id);
var boardLastThreadIdKey = Board.lastThreadIdKey(board.id);
var totalPostCountKey = Board.totalPostCountKey(board.id);
var totalThreadCountKey = Board.totalThreadCountKey(board.id);
var postCountKey = Board.postCountKey(board.id);
var threadCountKey = Board.threadCountKey(board.id);
var metadataBatch = [
// TODO: There should be a better solution than initializing with strings
{ type: 'put', key: boardLastPostUsernameKey , value: 'none' },
{ type: 'put', key: boardLastPostCreatedAtKey , value: 0 },
{ type: 'put', key: boardLastThreadTitleKey , value: 'none' },
{ type: 'put', key: boardLastThreadIdKey , value: 'none' },
{ type: 'put', key: totalPostCountKey , value: 0 },
{ type: 'put', key: totalThreadCountKey , value: 0 },
{ type: 'put', key: postCountKey , value: 0 },
{ type: 'put', key: threadCountKey , value: 0 }
];
return db.metadata.batchAsync(metadataBatch)
.then(function() {
if (board.parent_id) {
return addChildToBoard(board.id, board.parent_id);
}
else { return; }
})
.then(function() { return db.content.putAsync(boardKey, board); })
.then(function() { return board; });
};
boards.decTotalPostCount = function(id) {
var count;
var totalPostCountKey = Board.totalPostCountKey(id);
return new Promise(function(fulfill, reject) {
postCountLock.runwithlock(function () {
var promise = { fulfill: fulfill, reject: reject };
decrement(totalPostCountKey, postCountLock, promise);
});
})
.then(function(dbCount) { count = dbCount; })
.then(function() { return boards.find(id); })
.then(function(board) { return board.parent_id; })
.then(function(parentId) {
if (parentId && count > 0) {
return boards.decTotalPostCount(parentId)
.then(function() { return count; });
}
else { return count; }
});
};
.then(function() {
var postCountKey = Board.postCountKey(id);
var threadCountKey = Board.threadCountKey(id);
var totalPostCountKey = Board.totalPostCountKey(id);
var totalThreadCountKey = Board.totalThreadCountKey(id);
var lastPostUsernameKey = Board.lastPostUsernameKey(id);
var lastPostCreatedAtKey = Board.lastPostCreatedAtKey(id);
var lastThreadTitleKey = Board.lastThreadTitleKey(id);
var lastThreadIdKey = Board.lastThreadIdKey(id);
var deleteBatch = [
{ type: 'del', key: postCountKey },
{ type: 'del', key: threadCountKey },
{ type: 'del', key: totalPostCountKey },
{ type: 'del', key: totalThreadCountKey },
{ type: 'del', key: lastPostUsernameKey },
{ type: 'del', key: lastPostCreatedAtKey },
{ type: 'del', key: lastThreadTitleKey },
{ type: 'del', key: lastThreadIdKey }
];
return db.metadata.batchAsync(deleteBatch);
})