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var db = module.exports

var connection = require("./bookshelf")
var bookshelf = connection.bookshelf
var knex = connection.knex


/* MODELS */

var User = db.User = bookshelf.Model.extend({
  tableName: 'users',
  hasTimestamps: false,
})
var Thread = db.Thread = bookshelf.Model.extend({
  tableName: 'threads',
  hasTimestamps: false,
})
var Comment = db.Comment = bookshelf.Model.extend({
  tableName: 'comments',
  hasTimestamps: false,
})
var File = db.File = bookshelf.Model.extend({
  tableName: 'files',
  hasTimestamps: false,
})
var Keyword = db.Keyword = bookshelf.Model.extend({
  tableName: 'keywords',
  hasTimestamps: false,
})
var Mailbox = db.Mailbox = bookshelf.Model.extend({
  tableName: 'boxes',
  hasTimestamps: false,
})
var Message = db.Message = bookshelf.Model.extend({
  tableName: 'messages',
  hasTimestamps: false,
})

/* USERS */

db.createUser = function(data){
  return new db.User(data).save()
}
db.getUsers = function () {
  return User.query(function(qb){
    qb.orderBy("id", "desc")
  }).fetchAll()
}
db.getUser = function(id) {
  var model = new User({'id': id})
  return model.fetch()
}
db.getUserByUsername = function(username) {
  var model = new User({'username': username})
  return model.fetch()
}
db.getLastlog = function(limit){
  return knex.column('username').column('lastseen').select().from('users').orderBy('lastseen', 'desc').limit(limit || 10)
}

/* THREADS */

db.getLatestThreads = function () {
  return Thread.query(function(qb){
    qb.orderBy("lastmodified", "desc").limit(50)
  }).fetchAll()
}
db.getThreadsForKeyword = function (keyword) {
  return Thread.query(function(qb){
    qb.where("keyword", "=", keyword).orderBy("id", "desc")
  }).fetchAll()
}
db.getThread = function (id) {
  return Thread.query("where", "id", "=", id).fetch()
}
db.getThreadsById = function(ids){
  return Thread.where("id", "in", ids).fetchAll()
}
db.createThread = function(data){
  return new db.Thread(data).save()
}
db.updateThread = function(data){
}
db.removeThread = function(id){
}

/* FILES */

db.getFilesForThread = function (id){
  return File.query("where", "thread", "=", id).fetchAll()
}
db.getFileCounts = function(ids){
  return knex.column('thread').count('* as count').select().from('files').where('thread', 'in', ids).groupBy('thread')
}
db.getFileSizes = function(ids){
  return knex.column('thread').sum('size as size').select().from('files').where('thread', 'in', ids).groupBy('thread')
}
db.getFilesById = function(ids){
  return File.where("id", "in", ids).fetchAll()
}
db.createFile = function(data){
  return new db.File(data).save()
}
db.removeFile = function(id){
}

/* COMMENTS */

db.getCommentsForThread = function (id, limit, offset, order){
  order = order || "asc"
  return Comment.query(function(qb){
    qb.where("thread", "=", id).orderBy("id", order)
    if (limit) {
      qb.limit(limit)
    }
    if (offset) {
      qb.offset(offset)
    }
  }).fetchAll().then(function(comments){
    comments.forEach(function(comment){
      comment.set("comment", comment.get("comment").toString() )
    })
    return comments
  })
}
db.getCommentsById = function(ids){
  return Comment.where("id", "in", ids).fetchAll()
}
db.getCommentCounts = function(ids){
  return knex.column('thread').count('* as count').select().from('comments').where('thread', 'in', ids).groupBy('thread')
}
db.createComment = function(data){
  return new db.Comment(data).save()
}
db.updateComment = function(data){
}
db.removeComment = function(id){
}


/* KEYWORDS */

db.getKeywords = function (keywords){
  return Keyword.query("where", "keyword", "in", keywords).fetchAll()
}
db.getKeyword = function (keyword) {
  return Keyword.query("where", "keyword", "=", keyword).fetch()
}
db.createKeyword = function(data){
  return new db.Keyword(data).save()
}
db.updateKeyword = function(data){
}
db.removeKeyword = function(id){
}


/* MAILBOXES */

db.getMailboxes = function(username){
  return Mailbox.query("where", "owner", "=", username).fetchAll()
}
db.getMailboxCounts = function(boxes){
  return knex.column('mbox').count('* as count').select().from('messages').where('mbox', 'in', boxes).groupBy('mbox')
}
db.createMailbox = function(data){
}

/* MESSAGES */

db.getMessages = function(username, box, limit, offset){
  var mbox = username + "." + box
  return Message.query(function(qb){
    qb.column('id', 'mbox', 'unread', 'sender', 'recipient', 'date', 'subject', knex.raw("CHAR_LENGTH(body) as size")).where("mbox", "=", mbox).orderBy("id", "desc")
    if (limit) {
      qb.limit(limit)
    }
    if (offset) {
      qb.offset(offset)
    }
  }).fetchAll()
}
db.getMessage = function (id){
  var model = new Message({'id': id})
  return model.fetch().then(function(message){
    message.set("body", message.get("body").toString() )
    return message
  })
}
db.createMessage = function(data){
  return new db.Message(data).save()
}
db.updateMessage = function(data){
}
db.removeMessage = function(id){
}