<?php

/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

class Machine {

    private $machineid = "";
    private $machine = [];
    private $history = [];
    private $components = [];

    public function __construct($machineid) {
        global $database;
        if ($database->has('machines', ['machineid' => $machineid])) {
            $this->machineid = $machineid;
            $this->machine = $database->get('machines', ['machineid', 'notes', 'model', 'condition', 'price', 'os', 'serial', 'manufacturer'], ['machineid' => $machineid]);
            $this->history = $database->select('history', ['[>]event_types' => 'eventid'], ['historyid', 'date', 'eventname', 'notes'], ['machineid' => $machineid]);
            $this->components = $database->select('components', ['[>]component_types' => 'typeid'], ['compid', 'serial', 'typename', 'tested', 'notes', 'capacity', 'model'], ['machineid' => $machineid]);
        } else {
            throw new Exception("No machine with that ID number could be found.");
        }
    }

    public function getHistory() {
        return $this->history;
    }

    public function getMachineInfo() {
        $info = [];
        $info['machineid'] = $this->machineid;
        if (!empty($this->machine['model'])) {
            $info['model'] = $this->machine['model'];
        }
        if (!empty($this->machine['condition'])) {
            $info['condition'] = $this->machine['condition'];
        }
        if (!empty($this->machine['price'])) {
            $info['price'] = $this->machine['price'];
        }
        if (!empty($this->machine['os'])) {
            $info['os'] = $this->machine['os'];
        }
        if (!empty($this->machine['serial'])) {
            $info['serial'] = $this->machine['serial'];
        }
        if (!empty($this->machine['manufacturer'])) {
            $info['manufacturer'] = $this->machine['manufacturer'];
        }
        $info['notes'] = $this->machine['notes'];
        return $info;
    }

    public function getComponents() {
        $info = [];
        foreach ($this->components as $c) {
            $info[$c['compid']] = [
                'serial' => $c['serial'],
                'type' => $c['typename'],
                'notes' => $c['notes']
            ];
            if (!empty($c['tested'])) {
                $info[$c['compid']]['tested'] = $c['tested'];
            }
            if (!empty($c['capacity'])) {
                $info[$c['compid']]['capacity'] = $c['capacity'];
            }
            if (!empty($c['model'])) {
                $info[$c['compid']]['model'] = $c['model'];
            }
        }
        return $info;
    }

    public function addHistory($date, $event, $notes = "") {
        global $database;
        if (strtotime($date) === false) {
            throw new Exception("Invalid date.");
        }
        $date = date("Y-m-d H:i:s", strtotime($date));
        if (!$database->has('event_types', ['eventid' => $event])) {
            throw new Exception("Invalid event type.");
        }
        $event = (int) $event;
        if (empty($notes)) {
            $notes = "";
        }
        $database->insert('history', ['date' => $date, 'eventid' => $event, 'notes' => $notes, 'machineid' => $this->machineid]);
    }

    public function addComponent($serial, $type, $tested = null, $notes = "", $capacity = null, $model = null) {
        global $database;
        if (empty($serial)) {
            throw new Exception("Invalid serial number.");
        }
        if (!$database->has('component_types', ['typeid' => $type])) {
            throw new Exception("Invalid component type.");
        }
        $type = (int) $type;

        if (!is_null($tested)) {
            if (strtotime($tested) === false) {
            throw new Exception("Invalid tested date.");
            }
            $tested = date("Y-m-d H:i:s", strtotime($tested));
        }

        if (empty($notes)) {
            $notes = "";
        }
        if (empty($capacity)) {
            $capacity = null;
        }
        if (empty($model)) {
            $model = null;
        }

        $database->insert('components', ['serial' => $serial, 'typeid' => $type, 'tested' => $tested, 'notes' => $notes, 'capacity' => $capacity, 'model' => $model, 'machineid' => $this->machineid]);
    }

    /**
     * Generate a random machine ID number that is not in use.
     * @global $database
     * @param int $min Optional minimum number.
     * @param int $max Optional maximum number.
     * @return int
     */
    public static function generateId(int $min = 1000000000, int $max = 9999999999): int {
        global $database;
        $id = random_int(1000000000, 9999999999);
        while ($database->has('machines', ['machineid' => $id])) {
            $id = random_int(1000000000, 9999999999);
        }
        return $id;
    }
}