newswriter
Version:
NewsWriter is a generic tool for maintaining news and announcements on a website news page. Details are held in an SQLite database, from which the tool generates the index page (typically the top page of the target site), individual pages for events and a
297 lines (284 loc) • 11.6 kB
JavaScript
(function () {
var cogClass = function () {};
cogClass.prototype.exec = function (params, request, response) {
var oops = this.sys.apiError;
var sys = this.sys;
var data = params.data;
var userKey = params.userkey;
var userID = sys.admin[userKey].id;
var date = new Date();
var touchDate = sys.getUnixEpoch(date.getTime());
beginTransaction();
function beginTransaction() {
var sql = 'BEGIN TRANSACTION;';
sys.db.run(sql,function(err){
if (err) {return oops(response,err,'saveevent(0)')};
checkTitle();
});
};
// Check title
function checkTitle () {
var sql = 'SELECT titleID FROM titles WHERE title=?;';
sys.db.get(sql,[data.title],function(err,row){
if (err) {return oops(response,err,'saveevent(1)')};
if (row && row.titleID) {
data.title = row.titleID;
checkDescription();
} else {
addTitle();
}
});
};
function addTitle () {
var sql = 'INSERT INTO titles VALUES (NULL,?);';
sys.db.run(sql,[data.title],function(err){
if (err) {return oops(response,err,'saveevent(2)')};
data.title = this.lastID;
checkDescription();
});
};
// Check description
function checkDescription () {
var sql = 'SELECT descriptionID FROM descriptions WHERE description=?;';
sys.db.get(sql,[data.description],function(err,row){
if (err) {return oops(response,err,'saveevent(3)')};
if (row && row.descriptionID) {
data.description = row.descriptionID;
if (data.note) {
checkNote();
} else {
checkEvent();
}
} else {
addDescription();
}
});
};
function addDescription () {
var sql = 'INSERT INTO descriptions VALUES (NULL,?);';
sys.db.run(sql,[data.description],function(err){
if (err) {return oops(response,err,'saveevent(4)')};
data.description = this.lastID;
if (data.note) {
checkNote();
} else {
checkEvent();
}
});
};
// Check note
function checkNote () {
var sql = 'SELECT noteID FROM notes WHERE note=?;';
sys.db.get(sql,[data.note],function(err,row){
if (err) {return oops(response,err,'saveevent(5)')};
if (row && row.noteID) {
data.note = row.noteID;
checkEvent();
} else {
addNote();
}
});
};
function addNote () {
var sql = 'INSERT INTO notes VALUES (NULL,?);';
sys.db.run(sql,[data.note],function(err){
if (err) {return oops(response,err,'saveevent(6)')};
data.note = this.lastID;
checkEvent();
});
};
// Add or update event
function checkEvent () {
if (data.eventID) {
var sql = 'SELECT published,status FROM events WHERE eventID=?;';
sys.db.get(sql,[data.eventID],function(err,row){
if (err||!row) {return oops(response,err,'saveevent(7)')};
data.published = row.published;
data.status = row.status;
updateEvent();
});
} else {
addEvent();
}
};
function updateEvent () {
// XXX Plus convenorID, presenterID, pageDate
var presenterID = data.presenterID;
if (!data.presenterID) {
presenterID = null;
}
var noteID = data.note;
if (!noteID) {
noteID = null;
}
var sql = 'UPDATE events SET adminID=?, titleID=?, descriptionID=?, noteID=?, convenorID=?, presenterID=?, pageDate=? WHERE eventID=?;';
sys.db.run(sql,[userID,data.title,data.description,data.note,data.convenorID,presenterID,data.pageDate,data.eventID],function(err){
if (err) {return oops(response,err,'saveevent(8)')};
clearSessions();
});
};
function addEvent () {
var presenterID = data.presenterID;
if (!data.presenterID) {
presenterID = null;
}
var noteID = data.note;
if (!noteID) {
noteID = null;
}
var sql = 'INSERT INTO events VALUES (NULL,?,?,?,?,?,?,?,0,0,?)';
sys.db.run(sql,[userID,data.convenorID,data.title,data.description,data.pageDate,presenterID,noteID,touchDate],function(err){
if (err) {return oops(response,err,'saveevent(9) ('+data.title+") ("+data.description+") ("+noteID+") ("+presenterID+") ("+data.convenorID+")")};
data.eventID = this.lastID;
data.published = false;
data.status = 0;
clearSessions();
});
};
// Clear sessions
function clearSessions () {
var sql = 'DELETE FROM sessions WHERE eventID=?;';
sys.db.run(sql,[data.eventID],function(err){
if (err) {return oops(response,err,'saveevent(10)')};
var limit = 0;
if (data.sessions) {
limit = data.sessions.length;
}
checkSessionTitles(0,limit);
});
};
// Add sessions
function checkSessionTitles (pos,limit) {
if (pos === limit) {
addSessionTitles(0,limit);
return;
}
var title = data.sessions[pos].title;
var sql = 'SELECT titleID FROM titles WHERE title=?;';
sys.db.get(sql,[title],function(err,row){
if (err) {return oops(response,err,'saveevent(11)')};
if (row && row.titleID) {
data.sessions[pos].title = row.titleID;
}
checkSessionTitles(pos+1,limit);
});
};
function addSessionTitles (pos,limit) {
if (pos === limit) {
checkPlaces(0,limit);
return;
}
if ("number" !== typeof data.sessions[pos].title) {
var title = data.sessions[pos].title;
var sql = 'INSERT INTO titles VALUES (NULL,?);';
sys.db.run(sql,[title],function(err){
if (err) {return oops(response,err,'saveevent(12)')};
data.sessions[pos].title = this.lastID;
addSessionTitles(pos+1,limit);
});
} else {
addSessionTitles(pos+1,limit);
}
};
function checkPlaces (pos,limit) {
if (pos === limit) {
addPlaces(0,limit);
return;
}
var place = data.sessions[pos].place;
var sql = 'SELECT placeID FROM places WHERE place=?;';
sys.db.get(sql,[place],function(err,row){
if (err) {return oops(response,err,'saveevent(13)')};
if (row && row.placeID) {
data.sessions[pos].place = row.placeID;
// XXX Nudge touchDate
var sql = 'UPDATE places SET touchDate=? WHERE placeID=?;';
sys.db.run(sql,[touchDate,row.placeID],function(err){
if (err) {return oops(response,err,'saveevent(13)')};
checkPlaces(pos+1,limit);
});
} else {
checkPlaces(pos+1,limit);
}
});
};
function addPlaces (pos,limit) {
if (pos === limit) {
addSessions(0,limit);
return;
}
if ("number" !== typeof data.sessions[pos].place) {
var place = data.sessions[pos].place;
var sql = 'INSERT INTO places VALUES (NULL,?,?);';
sys.db.run(sql,[place,touchDate],function(err){
if (err) {return oops(response,err,'saveevent(14)')};
data.sessions[pos].place = this.lastID;
addPlaces(pos+1,limit);
});
} else {
addPlaces(pos+1,limit);
}
};
function addSessions (pos,limit) {
if (pos === limit) {
clearAttachments();
return;
};
var session = data.sessions[pos];
var sql = 'INSERT INTO sessions VALUES (NULL,?,?,?,?,?);';
sys.db.run(sql,[data.eventID,session.title,session.place,session.startDateTime,session.endDateTime],function(err){
//console.log("HAVE: eventID="+data.eventID+", titleID="+data.title+", placeID="+session.place);
if (err) {return oops(response,err,'saveevent(15)')};
addSessions(pos+1,limit);
});
};
// Clear attachments
function clearAttachments () {
var sql = 'DELETE FROM attachments WHERE eventID=?;';
sys.db.run(sql,[data.eventID],function(err){
if (err) {return oops(response,err,'saveevent(16)')};
var limit = 0;
if (data.attachments) {
limit = data.attachments.length;
}
touchDocuments(0,limit);
});
};
// Touch documents
function touchDocuments (pos,limit) {
if (pos === limit) {
addAttachments(0,limit);
return;
}
var documentID = data.attachments[pos];
var sql = 'UPDATE documents SET touchDate=? WHERE documentID=?;';
sys.db.run(sql,[touchDate,documentID],function(err){
if (err) {return oops(response,err,'saveevent(17)')};
touchDocuments(pos+1,limit);
});
};
// Add attachments
function addAttachments (pos,limit) {
if (pos === limit) {
finishTransaction();
return;
}
var documentID = data.attachments[pos];
var sql = 'INSERT INTO attachments VALUES (NULL,?,?);';
sys.db.run(sql,[data.eventID,documentID],function(err){
if (err) {return oops(response,err,'saveevent(18)')};
addAttachments(pos+1,limit);
});
};
// Finish transaction
function finishTransaction () {
sql = 'END TRANSACTION;';
sys.db.run(sql,function(err){
if (err) {return oops(response,err,'saveevent(19)')};
response.writeHead(200, {'Content-Type': 'application/json'});
response.end(JSON.stringify({eventID:data.eventID,published:data.published,status:data.status}));
});
};
}
exports.cogClass = cogClass;
})();