diff --git a/src/inc/registry.php b/src/inc/registry.php
new file mode 100644
index 0000000..363968d
--- /dev/null
+++ b/src/inc/registry.php
@@ -0,0 +1,393 @@
+<?php
+class registry {
+  const LOGS_PAGINATION_LIMIT = 30;
+  const REGISTRY_PAGINATION_LIMIT = 20;
+
+  const STATE_REGISTERED = 0;
+  const STATE_MANUALLY_INVALIDATED = 1;
+  const STATE_VALIDATED_BY_WORKER = 2;
+
+  public static $stateIcons = [
+    0 => "check",
+    1 => "delete_forever",
+    2 => "verified_user"
+  ];
+
+  public static $stateIconColors = [
+    0 => "mdl-color-text--green",
+    1 => "mdl-color-text--red",
+    2 => "mdl-color-text--green"
+  ];
+
+  public static $stateTooltips = [
+    0 => "Registrado",
+    1 => "Invalidado manualmente",
+    2 => "Validado"
+  ];
+
+  public static $workerPendingWhere = "r.workervalidated = 0";
+  public static $notInvalidatedWhere = "r.invalidated = 0";
+  public static $logsWarnings = "LOCATE('[warning]', logdetails) as warningpos, LOCATE('[error]', logdetails) as errorpos, LOCATE('[fatalerror]', logdetails) as fatalerrorpos";
+
+  private static function recordLog(&$log, $time, $executedby = -1, $quiet = false) {
+    global $con;
+
+    $slog = db::sanitize($log);
+    $sday = (int)$time;
+    $srealtime = (int)time();
+    $sexecutedby = (int)$executedby;
+
+    $status = mysqli_query($con, "INSERT INTO logs (realtime, day, executedby, logdetails) VALUES ($srealtime, $sday, $sexecutedby, '$slog')");
+
+    if (!$status) {
+      if (!$quiet) echo "[fatalerror] Couldn't record log into the database!\n";
+      return false;
+    } else {
+      if (!$quiet) echo "[success] Log recorded into the database.\n";
+      return mysqli_insert_id($con);
+    }
+  }
+
+  public static function getLogs($start = 0, $limit = self::LOGS_PAGINATION_LIMIT) {
+    global $con;
+
+    $query = mysqli_query($con, "SELECT id, realtime, day, executedby, ".self::$logsWarnings." FROM logs ORDER BY id DESC".db::limitPagination($start, $limit));
+
+    $return = [];
+    while ($row = mysqli_fetch_assoc($query)) {
+      $return[] = $row;
+    }
+
+    return $return;
+  }
+
+  public static function getLog($id) {
+    global $con;
+
+    $sid = (int)$id;
+
+    $query = mysqli_query($con, "SELECT logdetails, ".self::$logsWarnings." FROM logs WHERE id = $sid");
+
+    if (!mysqli_num_rows($query)) return false;
+
+    $row = mysqli_fetch_assoc($query);
+
+    return $row;
+  }
+
+  public static function beautifyLog($str) {
+    $str = str_replace("[info]", "<span style='font-weight: bold;' class='mdl-color-text--blue'>[info]</span>", $str);
+    $str = str_replace("[warning]", "<span style='font-weight: bold;' class='mdl-color-text--orange'>[warning]</span>", $str);
+    $str = str_replace("[error]", "<span style='font-weight: bold;' class='mdl-color-text--red'>[error]</span>", $str);
+    $str = str_replace("[fatalerror]", "<span style='font-weight: bold;' class='mdl-color-text--red-900'>[fatalerror]</span>", $str);
+    return $str;
+  }
+
+  private static function addToLog(&$log, $quiet, $msg) {
+    $log .= $msg;
+    if (!$quiet) echo $msg;
+  }
+
+  private static function alreadyRegistered($time, $worker) {
+    global $con;
+
+    $stime = (int)$time;
+    $sworker = (int)$worker;
+
+    $query = mysqli_query($con, "SELECT id FROM records WHERE worker = $sworker AND day = $stime AND invalidated = 0 LIMIT 1");
+
+    return (mysqli_num_rows($query) > 0);
+  }
+
+  private static function register($time, $worker, $schedule, $creator = -1) {
+    global $con;
+
+    $sworker = (int)$worker;
+    $stime = (int)$time;
+    $srealtime = (int)time();
+    $screator = (int)$creator;
+    $sbeginswork = (int)$schedule["beginswork"];
+    $sendswork = (int)$schedule["endswork"];
+    $sbeginsbreakfast = (int)$schedule["beginsbreakfast"];
+    $sendsbreakfast = (int)$schedule["endsbreakfast"];
+    $sbeginslunch = (int)$schedule["beginslunch"];
+    $sendslunch = (int)$schedule["endslunch"];
+
+    return mysqli_query($con, "INSERT INTO records (worker, day, created, creator, beginswork, endswork, beginsbreakfast, endsbreakfast, beginslunch, endslunch) VALUES ($sworker, $stime, $srealtime, $screator, $sbeginswork, $sendswork, $sbeginsbreakfast, $sendsbreakfast, $sbeginslunch, $sendslunch)");
+  }
+
+  public static function getWorkerCategory($id) {
+    global $con;
+
+    $sid = (int)$id;
+
+    $query = mysqli_query($con, "SELECT p.category category FROM workers w INNER JOIN people p ON w.person = p.id WHERE w.id = $sid");
+
+    if ($query === false || !mysqli_num_rows($query)) {
+      return false;
+    }
+
+    $row = mysqli_fetch_assoc($query);
+
+    return $row["category"];
+  }
+
+  public static function getDayTypes($time) {
+    global $con;
+
+    $stime = (int)$time;
+
+    $query = mysqli_query($con, "SELECT id, category, details FROM calendars WHERE begins <= $stime AND ends >= $stime");
+    if ($query === false) return false;
+
+    $calendars = [];
+    while ($row = mysqli_fetch_assoc($query)) {
+      $calendar = json_decode($row["details"], true);
+      if (json_last_error() !== JSON_ERROR_NONE) return false;
+      if (!isset($calendar[$time])) return false;
+
+      $calendars[$row["category"]] = $calendar[$time];
+    }
+
+    return $calendars;
+  }
+
+  private static function getApplicableSchedules($time) {
+    global $con;
+
+    $stime = (int)$time;
+
+    $query = mysqli_query($con, "SELECT id FROM schedules WHERE begins <= $stime AND ends >= $stime AND active = 1");
+    if ($query === false) return false;
+
+    $schedules = [];
+    while ($row = mysqli_fetch_assoc($query)) {
+      $schedules[] = $row["id"];
+    }
+
+    return $schedules;
+  }
+
+  public static function generateNow($originaltime, &$logId, $quiet = true, $executedby = -1, $workersWhitelist = false) {
+    global $con;
+
+    $log = "";
+
+    if ($workersWhitelist !== false) self::addToLog($log, $quiet, "[info] This is a partial registry generation, because a whitelist of workers was passed: [".implode(", ", $workersWhitelist)."]\n");
+
+    $datetime = new DateTime();
+    $datetime->setTimestamp($originaltime);
+    self::addToLog($log, $quiet, "[info] Time passed: ".$datetime->format("Y-m-d H:i:s")."\n");
+
+    $rawdate = $datetime->format("Y-m-d")."T00:00:00";
+    self::addToLog($log, $quiet, "[info] Working with this date: $rawdate\n");
+    $date = new DateTime($rawdate);
+
+    $time = $date->getTimestamp();
+    $dow = (int)$date->format("N") - 1;
+    self::addToLog($log, $quiet, "[info] Final date timestamp: $time, Dow: $dow\n");
+
+    $days = self::getDayTypes($time);
+    if ($days === false) {
+      self::addToLog($log, $quiet, "[fatalerror] An error occurred while loading the calendars.\n");
+      $logId = self::recordLog($log, $time, $executedby, $quiet);
+      return 1;
+    }
+
+    $schedules = self::getApplicableSchedules($time);
+    if ($schedules === false) {
+      self::addToLog($log, $quiet, "[fatalerror] An error occurred while loading the active schedules.\n");
+      $logId = self::recordLog($log, $time, $executedby, $quiet);
+      return 2;
+    }
+
+    self::addToLog($log, $quiet, "[info] Found ".count($schedules)." active schedule(s)\n");
+
+    foreach ($schedules as $scheduleid) {
+      self::addToLog($log, $quiet, "\n[info] Processing schedule $scheduleid\n");
+
+      $s = schedules::get($scheduleid);
+      if ($s === false) {
+        self::addToLog($log, $quiet, "[fatalerror] An error ocurred while loading schedule with id $scheduleid (it doesn't exist or there was an error with the SQL query)\n");
+        $logId = self::recordLog($log, $time, $executedby, $quiet);
+        return 3;
+      }
+
+      if ($workersWhitelist !== false && !in_array($s["worker"], $workersWhitelist)) {
+        self::addToLog($log, $quiet, "[info] This schedule's worker (".$s["worker"].") is not in the whitelist, so skipping\n");
+        continue;
+      }
+
+      $category = self::getWorkerCategory($s["worker"]);
+
+      if (isset($days[$category])) {
+        self::addToLog($log, $quiet, "[info] Using worker's (".$s["worker"].") category ($category) calendar\n");
+        $typeday = $days[$category];
+      } else if (isset($days[-1])) {
+        self::addToLog($log, $quiet, "[info] Using default calendar\n");
+        $typeday = $days[-1];
+      } else {
+        self::addToLog($log, $quiet, "[warning] No calendar applies, so skipping this schedule\n");
+        continue;
+      }
+
+      if (!isset($s["days"][$typeday])) {
+        self::addToLog($log, $quiet, "[info] This schedule doesn't have this type of day ($typeday) set up, so skipping\n");
+        continue;
+      }
+
+      if (!isset($s["days"][$typeday][$dow])) {
+        self::addToLog($log, $quiet, "[info] This schedule doesn't have a daily schedule for this day of the week ($dow) and type of day ($typeday), so skipping.\n");
+        continue;
+      }
+
+      self::addToLog($log, $quiet, "[info] Found matching daily schedule. We'll proceed to register it\n");
+
+      if (self::alreadyRegistered($time, $s["worker"])) {
+        self::addToLog($log, $quiet, "[warning] We're actually NOT going to register it because another registry already exists for this worker at the same day.\n");
+      } else {
+        if (self::register($time, $s["worker"], $s["days"][$typeday][$dow], $executedby)) {
+          self::addToLog($log, $quiet, "[info] Registered with id ".mysqli_insert_id($con)."\n");
+        } else {
+          self::addToLog($log, $quiet, "[error] Couldn't register this schedule because of an unknown error!\n");
+        }
+      }
+    }
+
+    $logId = self::recordLog($log, $time, $executedby, $quiet);
+
+    return 0;
+  }
+
+  public static function getStatus($row) {
+    if ($row["invalidated"] == 1) return self::STATE_MANUALLY_INVALIDATED;
+    elseif ($row["workervalidated"] == 1) return self::STATE_VALIDATED_BY_WORKER;
+    else return self::STATE_REGISTERED;
+  }
+
+  private static function magicRecord(&$row) {
+    $row["state"] = self::getStatus($row);
+  }
+
+  public static function get($id, $magic = false) {
+    global $con;
+
+    $sid = (int)$id;
+
+    $query = mysqli_query($con, "SELECT * FROM records WHERE id = $sid LIMIT 1");
+
+    if (!mysqli_num_rows($query)) return false;
+
+    $row = mysqli_fetch_assoc($query);
+    if ($magic) self::magicRecord($row);
+
+    return $row;
+  }
+
+  public static function getRecords($worker = false, $begins = false, $ends = false, $returnInvalid = false, $includeWorkerInfo = false, $sortByDateDesc = false, $start = 0, $limit = self::REGISTRY_PAGINATION_LIMIT, $treatWorkerAttributeAsUser = false, $onlyWorkerPending = false, $magic = true) {
+    global $con;
+
+    if ($treatWorkerAttributeAsUser && !$includeWorkerInfo) return false;
+
+    $where = [];
+
+    if ($worker !== false) $where[] = ($treatWorkerAttributeAsUser ? "w.person" : "r.worker")." = ".(int)$worker;
+
+    $dateLimit = ($begins !== false && $ends !== false);
+    if ($dateLimit) {
+      $where[] = "r.day >= ".(int)$begins;
+      $where[] = "r.day <= ".(int)$ends;
+    }
+
+    if (!$returnInvalid || $onlyWorkerPending) $where[] = self::$notInvalidatedWhere;
+
+    if ($onlyWorkerPending) $where[] = self::$workerPendingWhere;
+
+    $query = mysqli_query($con, "SELECT r.*".($includeWorkerInfo ? ", p.id personid, p.name workername, w.company companyid" : "")." FROM records r LEFT JOIN workers w ON r.worker = w.id".($includeWorkerInfo ? " LEFT JOIN people p ON w.person = p.id" : "").(count($where) ? " WHERE ".implode(" AND ", $where) : "")." ORDER BY".($sortByDateDesc ? " r.day DESC, w.company DESC," : "")." id DESC".db::limitPagination($start, $limit));
+
+    $return = [];
+    while ($row = mysqli_fetch_assoc($query)) {
+      if ($magic) self::magicRecord($row);
+      $return[] = $row;
+    }
+
+    return $return;
+  }
+
+  public static function getWorkerRecords($worker, $begins = false, $ends = false, $returnInvalid = false, $onlyWorkerPending = false) {
+    return self::getRecords($worker, $begins, $ends, $returnInvalid, false, true, 0, 0, false, $onlyWorkerPending);
+  }
+
+  public static function numRows($includingInvalidated = false) {
+    global $con;
+
+    $query = mysqli_query($con, "SELECT COUNT(*) count FROM records".($includingInvalidated ? "" : " WHERE invalidated = 0"));
+
+    if (!mysqli_num_rows($query)) return false;
+
+    $row = mysqli_fetch_assoc($query);
+
+    return (isset($row["count"]) ? (int)$row["count"] : false);
+  }
+
+  public static function numRowsUser($user, $includingInvalidated = true) {
+    global $con;
+
+    $where = [];
+    if (!$includingInvalidated) $where[] = "r.invlidated = 0";
+    $where[] = "w.person = ".(int)$user;
+
+    $query = mysqli_query($con, "SELECT COUNT(*) count FROM records r LEFT JOIN workers w ON r.worker = w.id".(count($where) ? " WHERE ".implode(" AND ", $where) : ""));
+
+    if (!mysqli_num_rows($query)) return false;
+
+    $row = mysqli_fetch_assoc($query);
+
+    return (isset($row["count"]) ? (int)$row["count"] : false);
+  }
+
+  public static function checkRecordIsFromPerson($record, $person = "ME", $boolean = false) {
+    global $con;
+
+    if ($person == "ME") $person = people::userData("id");
+
+    $srecord = (int)$record;
+    $sperson = (int)$person;
+
+    $query = mysqli_query($con, "SELECT r.id FROM records r INNER JOIN workers w ON r.worker = w.id INNER JOIN people p ON w.person = p.id WHERE p.id = $sperson AND r.id = $srecord LIMIT 1");
+
+    if (!mysqli_num_rows($query)) {
+      if ($boolean) return false;
+      security::denyUseMethod(security::METHOD_NOTFOUND);
+    }
+
+    return true;
+  }
+
+  public static function invalidate($id, $invalidatedby = "ME") {
+    global $con;
+
+    $sid = (int)$id;
+
+    if ($invalidatedby === "ME") $invalidatedby = people::userData("id");
+    $sinvalidatedby = (int)$invalidatedby;
+
+    return mysqli_query($con, "UPDATE records SET invalidated = 1, invalidatedby = $sinvalidatedby WHERE id = $sid LIMIT 1");
+  }
+
+  public static function invalidateAll($id, $beginsRawDate, $endsRawDate, $invalidatedby = "ME") {
+    global $con;
+
+    $beginsDate = new DateTime($beginsRawDate);
+    $sbegins = (int)$beginsDate->getTimestamp();
+    $endsDate = new DateTime($endsRawDate);
+    $sends = (int)$endsDate->getTimestamp();
+
+    $sid = (int)$id;
+
+    if ($invalidatedby === "ME") $invalidatedby = people::userData("id");
+    $sinvalidatedby = (int)$invalidatedby;
+
+    return mysqli_query($con, "UPDATE records SET invalidated = 1, invalidatedby = $sinvalidatedby WHERE worker = $sid AND invalidated = 0 AND day <= $sends AND day >= $sbegins");
+  }
+}