<?php

class ManualInvoiceModel {
    public $invoice_number;
    public $invoice_date;
    public $owner_id;
    public $billingaddress_id;
    public $customer_number;
    public $fibu_account_number;
    public $fibu_payment_due;
    public $fibu_payment_skonto;
    public $fibu_payment_skonto_rate;
    public $sepa_date;
    public $sepa_id;
    public $sepa_last_date;
    public $fibu_cost_area;
    public $fibu_cost_account;
    public $fibu_cost_account_legacy;
    public $fibu_taxcode;
    public $tax_text;
    public $company;
    public $firstname;
    public $lastname;
    public $street;
    public $zip;
    public $city;
    public $country;
    public $email;
    public $uid;
    public $billing_type;
    public $billing_delivery;
    public $bank_account_bank;
    public $bank_account_owner;
    public $bank_account_iban;
    public $bank_account_bic;
    public $total;
    public $total_gross;
    public $vatgroup_id;
    public $bmd_export_date;
    public $date_delivered;
    public $create_by;
    public $edit_by;
    public $create;
    public $edit;


    public static function create($data) {
        $invoice = new ManualInvoice();

        $me = new User();
        $me->loadMe();

        // Set audit fields
        $invoice->create_by = $me->id;
        $invoice->edit_by = $me->id;
        $invoice->create = time();
        $invoice->edit = time();

        // Set invoice fields
        foreach($data as $field => $value) {
            if(property_exists($invoice, $field) && $field != 'id') {
                $invoice->$field = $value;
            }
        }

        // Set defaults
        if (!$invoice->billing_type) {
            $invoice->billing_type = 'invoice';
        }
        if (!$invoice->billing_delivery) {
            $invoice->billing_delivery = 'email';
        }
        if (!$invoice->total) {
            $invoice->total = 0;
        }
        if (!$invoice->total_gross) {
            $invoice->total_gross = 0;
        }
        if (!$invoice->vatgroup_id) {
            $invoice->vatgroup_id = 1; // Default VAT group
        }
        if (!$invoice->owner_id) {
            $invoice->owner_id = 0;
        }
        if (!$invoice->billingaddress_id) {
            $invoice->billingaddress_id = 0;
        }
        if (!$invoice->customer_number) {
            $invoice->customer_number = 0;
        }

        if ($invoice->save()) {
            return $invoice->id;
        }

        return false;
    }

    public static function getNextInvoiceNumber() {
        $last_invoice_num = self::getLastInvoiceNumber();

        if(!$last_invoice_num) {
            return "MRN".date("Y")."-X000001";
        }

        $year_part = 0;
        $num_part = 0;

        $m = [];
        if(preg_match('/^MRN(\d+)-X(\d+)$/', $last_invoice_num, $m)) {
            if(array_key_exists(1, $m)) {
                $year_part = $m[1];
                if(array_key_exists(2, $m)) {
                    $num_part = $m[2];
                }
            }
        }

        if(!$year_part || !$num_part) {
            return "MRN".date("Y")."-X000001";
        }

        if(date("Y") == $year_part) {
            $new_year_part = $year_part;
            $new_num_part = $num_part + 1;
        } else {
            $new_year_part = date("Y");
            $new_num_part = 1;
        }

        $new_invoice_num = "MRN$new_year_part-X".str_pad($new_num_part,"6", "0", STR_PAD_LEFT);
        return $new_invoice_num;
    }

    public static function getLastInvoiceNumber() {
        $last_invoice = self::getLast(["invoice_number" => true]);
        if(!$last_invoice || !$last_invoice->invoice_number) {
            return false;
        }
        return $last_invoice->invoice_number;
    }

    public static function getAll($filter = [], $limit = null, $offset = 0, $order = ["key" => null]) {
        $items = [];

        $db = FronkDB::singleton();

        $where = self::getSqlFilter($filter);
        $sql = "SELECT ManualInvoice.* FROM ManualInvoice WHERE $where";

        if ($order['key'] !== null) {
            $orderDir = isset($order['order']) ? $order['order'] : 'ASC';
            $sql .= " ORDER BY " . $order['key'] . " " . $orderDir;
        } else {
            $sql .= " ORDER BY invoice_number";
        }

        if($limit !== null) {
            $sql .= " LIMIT " . intval($offset) . ", " . intval($limit);
        }

        $res = $db->query($sql);
        if($db->num_rows($res)) {
            while($data = $db->fetch_object($res)) {
                $items[] = new ManualInvoice($data);
            }
        }
        return $items;
    }

    public static function getFirst($filter) {
        $db = FronkDB::singleton();

        $where = self::getSqlFilter($filter);
        $sql = "SELECT ManualInvoice.* FROM ManualInvoice WHERE $where ORDER BY invoice_number LIMIT 1";

        $res = $db->query($sql);
        if($db->num_rows($res)) {
            $data = $db->fetch_object($res);
            $item = new ManualInvoice($data);
            if($item->id) {
                return $item;
            } else {
                return null;
            }
        }
        return null;
    }

    public static function getLast($filter) {
        $db = FronkDB::singleton();

        $where = self::getSqlFilter($filter);
        $sql = "SELECT ManualInvoice.* FROM ManualInvoice WHERE $where ORDER BY invoice_number DESC LIMIT 1";

        mfLoghandler::singleton()->debug($sql);

        $res = $db->query($sql);
        if($db->num_rows($res)) {
            $data = $db->fetch_object($res);
            $item = new ManualInvoice($data);
            if($item->id) {
                return $item;
            } else {
                return null;
            }
        }
        return null;
    }

    public static function count($filter = []) {
        $db = FronkDB::singleton();

        $where = self::getSqlFilter($filter);
        $sql = "SELECT COUNT(*) as cnt FROM ManualInvoice WHERE $where";

        mfLoghandler::singleton()->debug($sql);

        $res = $db->query($sql);
        if($db->num_rows($res)) {
            $data = $db->fetch_object($res);
            return $data->cnt;
        }
        return 0;
    }

    public static function search($filter, $limit = false, $order = false) {
        $items = [];

        if(!$order) {
            $order = "invoice_number ASC";
        }

        $db = FronkDB::singleton();

        $where = self::getSqlFilter($filter);
        $sql = "SELECT ManualInvoice.* FROM ManualInvoice WHERE $where ORDER BY $order";

        if(is_array($limit) && count($limit)) {
            if(is_numeric($limit['start']) && is_numeric($limit['count'])) {
                $sql .= " LIMIT ".$limit['start'].", ".$limit['count'];
            } elseif(is_numeric($limit['count'])) {
                $sql .= " LIMIT ".$limit['count'];
            }
        }

        mfLoghandler::singleton()->debug($sql);

        $res = $db->query($sql);
        if($db->num_rows($res)) {
            while($data = $db->fetch_object($res)) {
                $items[$data->id] = new ManualInvoice($data);
            }
        }

        return $items;
    }

    private static function getSqlFilter($filter) {
        $where = "1=1 ";
        $db = FronkDB::singleton();

        if(array_key_exists("id", $filter)) {
            $id = $filter['id'];
            if(is_numeric($id)) {
                $where .= " AND ManualInvoice.id like '%$id%'";
            }
        }

        if(array_key_exists("invoice_number", $filter)) {
            $invoice_number = $filter['invoice_number'];
            if($invoice_number === true) {
                $where .= " AND ManualInvoice.invoice_number IS NOT NULL AND ManualInvoice.invoice_number <> ''";
            } elseif($invoice_number) {
                $invoice_number = $db->escape($invoice_number);
                $where .= " AND ManualInvoice.invoice_number='$invoice_number'";
            } elseif($invoice_number === null || $invoice_number === false) {
                $where .= " AND ManualInvoice.invoice_number IS NULL";
            }
        }

        if(array_key_exists("invoice_number%", $filter)) {
            $invoice_number = $filter['invoice_number%'];
            if($invoice_number) {
                $where .= " AND ManualInvoice.invoice_number LIKE '%$invoice_number%'";
            }
        }

        if(array_key_exists("invoice_date", $filter)) {
            $invoice_date = $filter['invoice_date'];
            if($invoice_date) {
                $where .= " AND ManualInvoice.invoice_date='$invoice_date'";
            } elseif($invoice_date === null || $invoice_date === false) {
                $where .= " AND ManualInvoice.invoice_date IS NULL";
            }
        }

        if(array_key_exists("invoice_date>=", $filter)) {
            $invoice_date = $db->escape($filter['invoice_date>=']);
            if($invoice_date) {
                $where .= " AND ManualInvoice.invoice_date >= '$invoice_date'";
            }
        }

        if(array_key_exists("invoice_date<=", $filter)) {
            $invoice_date = $db->escape($filter['invoice_date<=']);
            if($invoice_date) {
                $where .= " AND ManualInvoice.invoice_date <= '$invoice_date'";
            }
        }

        if(array_key_exists("owner_id", $filter)) {
            $owner_id = $filter['owner_id'];
            if(is_numeric($owner_id)) {
                $where .= " AND ManualInvoice.owner_id=$owner_id";
            }
        }

        if(array_key_exists("billingaddress_id", $filter)) {
            $billingaddress_id = $filter['billingaddress_id'];
            if(is_numeric($billingaddress_id)) {
                $where .= " AND ManualInvoice.billingaddress_id=$billingaddress_id";
            }
        }

        if(array_key_exists("customer_number", $filter)) {
            $customer_number = $filter['customer_number'];
            if(is_numeric($customer_number)) {
                $where .= " AND ManualInvoice.customer_number LIKE $customer_number";
            }
        }

        if(array_key_exists("billing_type", $filter)) {
            $billing_type = $db->escape($filter['billing_type']);
            if($billing_type) {
                $where .= " AND ManualInvoice.billing_type LIKE '$billing_type'";
            }
        }

        if(array_key_exists("billing_delivery", $filter)) {
            $billing_delivery = $db->escape($filter['billing_delivery']);
            if($billing_delivery) {
                $where .= " AND ManualInvoice.billing_delivery LIKE '$billing_delivery'";
            }
        }

        if(array_key_exists("add-where", $filter)) {
            $where .= " ".$filter['add-where'];
        }

        return $where;
    }

    public static function get($id) {
        return self::getFirst(["id" => $id]);
    }

    public static function update($data) {
        if (!isset($data['id'])) {
            return 0;
        }

        $invoice = new ManualInvoice($data['id']);
        if (!$invoice->id) {
            return 0;
        }

        $me = new User();
        $me->loadMe();

        // Set audit fields
        $invoice->edit_by = $me->id;
        $invoice->edit = time();

        // Update fields
        foreach($data as $field => $value) {
            if(property_exists($invoice, $field) && $field != 'id' && $field != 'create' && $field != 'create_by') {
                $invoice->$field = $value;
            }
        }

        if ($invoice->save()) {
            return 1;
        }

        return 0;
    }

    public static function delete($id) {
        $invoice = new ManualInvoice($id);
        if (!$invoice->id) {
            return 0;
        }

        // Delete positions first
        $positions = ManualInvoicepositionModel::search(['manualinvoice_id' => $id]);
        foreach ($positions as $pos) {
            $pos->delete();
        }

        // Delete invoice
        if ($invoice->delete()) {
            return 1;
        }

        return 0;
    }
}