Joywork/ajax/getNBChart.php

<?php

    if (isset($_POST['obj']) && !empty($_POST['obj'])) {

        $block_id = $_POST['obj'];
        $chart_data = [];
        require_once($_SERVER['DOCUMENT_ROOT'] . "/config.php");

        //-----
        $sql = "SELECT apartments_sales.id, block_id, room_type_id, is_sold, apartments_sales.discount_meter_price as ap_price, apartments_sales.updated_at as ap_date, price_history.meter_price as his_price, price_history.created_at as his_date
                FROM apartments_sales LEFT JOIN price_history ON apartments_sales.id = price_history.ap_id
                WHERE block_id='".$block_id."'";

        $rez = mysql_query($sql);

        while ($obj = mysql_fetch_assoc($rez)) {
            $aps[$obj['id']][] = $obj;
        }

        foreach ($aps as $id => $ap_data) {
            $ap_prices = [];
            $ap_prices_avg = [];
            foreach ($ap_data as $ap_entry) {
                if ($ap_entry['his_price']) {
                    $ap_prices[substr($ap_entry['his_date'], 0, 7)][] = $ap_entry['his_price'];
                }
            }
            $ap_prices[substr($ap_entry['ap_date'], 0, 7)][] = $ap_entry['ap_price'];
            foreach ($ap_prices as $date => $date_prices) {
                $ap_prices_avg[$date] = ceil(array_sum($date_prices)/count($date_prices));
            }

            foreach ($ap_prices_avg as $date => $price) {
                $result_price[$date][$ap_entry['room_type_id']][] = $price;
            }

            if ($ap_entry['is_sold'] == 1) {
                $result_quantity[$date][$ap_entry['room_type_id']][] = 1;
            }
        }

        // avg current data
        foreach ($result_price as $date => $types_data) {
            foreach ($types_data as $type => $prices) {
                $res1['price'][$date][$type] = ceil(array_sum($prices)/count($prices));
            }
        }
        foreach ($result_quantity as $date => $types_data) {
            foreach ($types_data as $type => $quantities) {
                $res1['quantity'][$date][$type] = array_sum($quantities);
            }
        }

        // get parsed data
        $sql = "SELECT block_id, room_type_id, price, period, quantity FROM nb_sales WHERE block_id=" . $block_id . " ORDER BY period";

        $rez = mysql_query($sql);

        while ($obj = mysql_fetch_assoc($rez)) {
            $res2['price'][substr($obj['period'], 0, 7)][$obj['room_type_id']] = $obj['price'];
            $res2['quantity'][substr($obj['period'], 0, 7)][$obj['room_type_id']] = $obj['quantity'];
        }

        //get date periods, and room types
        $price_dates = [];
        $quantity_dates = [];
        $price_types = [];
        $quantity_types = [];
        if (!empty($res1)) {
            foreach ($res1['price'] as $key => $date) {
                if (array_search($key, $price_dates) === FALSE) {
                    $price_dates[] = $key;
                }
                foreach ($date as $type => $value) {
                    if (array_search($type, $price_types) === FALSE) {
                        $price_types[] = $type;
                    }
                }
            }
            foreach ($res1['quantity'] as $key => $date) {
                if (array_search($key, $quantity_dates) === FALSE) {
                    $quantity_dates[] = $key;
                }
                foreach ($date as $type => $value) {
                    if (array_search($type, $quantity_types) === FALSE) {
                        $quantity_types[] = $type;
                    }
                }
            }
        }
        if (!empty($res2)) {
            foreach ($res2['price'] as $key => $date) {
                if (array_search($key, $price_dates) === FALSE) {
                    $price_dates[] = $key;
                }
                foreach ($date as $type => $value) {
                    if (array_search($type, $price_types) === FALSE) {
                        $price_types[] = $type;
                    }
                }
            }
            foreach ($res2['quantity'] as $key => $date) {
                if (array_search($key, $quantity_dates) === FALSE) {
                    $quantity_dates[] = $key;
                }
                foreach ($date as $type => $value) {
                    if (array_search($type, $quantity_types) === FALSE) {
                        $quantity_types[] = $type;
                    }
                }
            }
        }
        sort($price_dates);
        reset($price_dates);

        sort($quantity_dates);
        reset($quantity_dates);

        //foreach dates and room types
        //$price_dates
        //$price_types
        //$quantity_dates
        //$quantity_types
        $result = [];
        foreach ($price_dates as $date) {
            $prices = [];
            $prices['date'] = $date;
            foreach ($price_types as $type) {
                if (isset($res1['price'][$date][$type]) && isset($res2['price'][$date][$type])) {
                    $prices[$type] = ceil(($res1['price'][$date][$type] + $res2['price'][$date][$type]) / 2);
                } elseif (isset($res1['price'][$date][$type])) {
                    $prices[$type] = $res1['price'][$date][$type];
                } elseif (isset($res2['price'][$date][$type])) {
                    $prices[$type] = $res2['price'][$date][$type];
                } else {
                    $prices[$type] = 0;
                }
            }
            $result['price'][] = $prices;
        }

        foreach ($quantity_dates as $date) {
            $quantities = [];
            $quantities['date'] = $date;
            foreach ($quantity_types as $type) {
                if (isset($res1['quantity'][$date][$type]) && isset($res2['quantity'][$date][$type])) {
                    $quantities[$type] = $res1['quantity'][$date][$type] + $res2['quantity'][$date][$type];
                } elseif (isset($res1['quantity'][$date][$type])) {
                    $quantities[$type] = $res1['quantity'][$date][$type];
                } elseif (isset($res2['quantity'][$date][$type])) {
                    $quantities[$type] = $res2['quantity'][$date][$type];
                } else {
                    $quantities[$type] = 0;
                }
            }
            $result['count'][] = $quantities;
        }

        echo json_encode($result); exit;
    }
    echo false; exit;