var exports = module.exports;
//var {Database} = require('sqlite3');
//var sqldb = new Database(_data+'/data.db');
var {Client} = require('cassandra-driver');
const cass = new Client({
 cloud: {secureConnectBundle:'secure-connect-todo.zip'},
 credentials: {
  username:'',
  password:''
 },
});

async function startcass() {
 await cass.connect();
 cass.execute('use todo');
}
startcass();

(()=>{
 var rankCache = new Map();
 var rankReadTimeouts = new Map();
 var rankWriteTimeouts = new Map();
 var rankReadBounce = 1000*60*5;
 var rankWriteBounce = 1000*15;
 function rawgetrank(user,cb) {
  cass.execute('Select json from rank where user=?',[user]).then(result=>{
   if(!result || !result.rows || !result.rows.length) return cb(null,{});
   cb(null,JSON.parse(result.rows[0].json));
  }).catch(cb);
 }
 
 function updaterankreadtimeout(user) {
  if(rankReadTimeouts.has(user)) clearTimeout(rankReadTimeouts.get(user));
  rankReadTimeouts.set(user,setTimeout(()=>rankCache.delete(user),rankReadBounce));
 }
 
 function getrank(user,cb) {
  updaterankreadtimeout(user);
  if(rankCache.has(user)) return cb(null,rankCache.get(user));
  rawgetrank(user,(err,obj)=>{
   if(err) return cb(err);
   rankCache.set(user,obj);
   return cb(null,obj);
  });
 }
 
 function rawwriterank(user,obj) {
  cass.execute('Insert into rank (user,json) values (?,?)',[user,JSON.stringify(obj)]);
 }
 
 function writerank(user,obj) {
  if(rankWriteTimeouts.has(user)) clearTimeout(rankWriteTimeouts.get(user));
  rankWriteTimeouts.set(user,setTimeout(()=>rawwriterank(user,obj),rankWriteBounce));
 }
 exports.getrank=getrank;
 exports.writerank=writerank;
})();

(()=>{
 function rawgettitle(user,id,cb) {
  cass.execute('Select title from titles where user=? and id=?',[user,id]).then(result=>{
   if(!result || !result.rows || !result.rows.length) return cb('title not found');
   cb(null,result.rows[0]);
  }).catch(cb);
 }
 function rawwritetitle(user,id,title) {
  cass.execute('Insert into titles (user,id,title) values (?,?,?)',[user.id,title]);
 }
 exports.gettitle=rawgettitle;
 exports.writetitle=rawwritetitle;
})();

(()=>{
 function rawgetday(user,day,cb) {
  cass.execute('Select json from day where user=? and day=?',[user,day]).then(result=>{
   if(!result || !result.rows || !result.rows.length) return cb(null,[]);
   cb(null,JSON.parse(result.rows[0].json));
  }).catch(cb);
 }
 function rawwriteday(user,day,list) {
  cass.execute('Insert into day (user,day,json) values (?,?,?)',[user,day,JSON.stringify(list)]);
 }
 exports.getday=rawgetday;
 exports.writeday=rawwriteday;
})();

(()=>{
 function rawaddlog(user,title,id) {
  cass.execute('Insert into addjournal (user,time,title,id) values (?,?,?,?)',[user,Date.now(),title,id]);
 }
 exports.addlogwrite=rawaddlog;
})();