<?php namespace App\Ninja\Repositories;

use Carbon;
use Utils;
use App\Models\Invoice;
use App\Models\InvoiceItem;
use App\Models\Invitation;
use App\Models\Product;
use App\Models\Task;
use App\Services\PaymentService;

class InvoiceRepository
{
    public function __construct(PaymentService $paymentService)
    {
        $this->paymentService = $paymentService;
    }

    public function getInvoices($accountId, $clientPublicId = false, $entityType = ENTITY_INVOICE, $filter = false)
    {
        $query = \DB::table('invoices')
            ->join('clients', 'clients.id', '=', 'invoices.client_id')
            ->join('invoice_statuses', 'invoice_statuses.id', '=', 'invoices.invoice_status_id')
            ->join('contacts', 'contacts.client_id', '=', 'clients.id')
            ->where('invoices.account_id', '=', $accountId)
            ->where('clients.deleted_at', '=', null)
            ->where('contacts.deleted_at', '=', null)
            ->where('invoices.is_recurring', '=', false)
            ->where('contacts.is_primary', '=', true)
            ->select('clients.public_id as client_public_id', 'invoice_number', 'invoice_status_id', 'clients.name as client_name', 'invoices.public_id', 'amount', 'invoices.balance', 'invoice_date', 'due_date', 'invoice_statuses.name as invoice_status_name', 'clients.currency_id', 'contacts.first_name', 'contacts.last_name', 'contacts.email', 'quote_id', 'quote_invoice_id', 'invoices.deleted_at', 'invoices.is_deleted', 'invoices.partial');

        if (!\Session::get('show_trash:'.$entityType)) {
            $query->where('invoices.deleted_at', '=', null);
        }

        if ($clientPublicId) {
            $query->where('clients.public_id', '=', $clientPublicId);
        }

        if ($filter) {
            $query->where(function ($query) use ($filter) {
                $query->where('clients.name', 'like', '%'.$filter.'%')
                      ->orWhere('invoices.invoice_number', 'like', '%'.$filter.'%')
                      ->orWhere('invoice_statuses.name', 'like', '%'.$filter.'%')
                  ->orWhere('contacts.first_name', 'like', '%'.$filter.'%')
                  ->orWhere('contacts.last_name', 'like', '%'.$filter.'%')
                  ->orWhere('contacts.email', 'like', '%'.$filter.'%');
            });
        }

        return $query;
    }

    public function getRecurringInvoices($accountId, $clientPublicId = false, $filter = false)
    {
        $query = \DB::table('invoices')
                    ->join('clients', 'clients.id', '=', 'invoices.client_id')
                    ->join('frequencies', 'frequencies.id', '=', 'invoices.frequency_id')
                    ->join('contacts', 'contacts.client_id', '=', 'clients.id')
                    ->where('invoices.account_id', '=', $accountId)
                    ->where('invoices.is_quote', '=', false)
                    ->where('contacts.deleted_at', '=', null)
                    ->where('invoices.is_recurring', '=', true)
                    ->where('contacts.is_primary', '=', true)
                    ->where('clients.deleted_at', '=', null)
                    ->select('clients.public_id as client_public_id', 'clients.name as client_name', 'invoices.public_id', 'amount', 'frequencies.name as frequency', 'start_date', 'end_date', 'clients.currency_id', 'contacts.first_name', 'contacts.last_name', 'contacts.email', 'invoices.deleted_at', 'invoices.is_deleted');

        if ($clientPublicId) {
            $query->where('clients.public_id', '=', $clientPublicId);
        }

        if (!\Session::get('show_trash:invoice')) {
            $query->where('invoices.deleted_at', '=', null);
        }

        if ($filter) {
            $query->where(function ($query) use ($filter) {
                $query->where('clients.name', 'like', '%'.$filter.'%')
                      ->orWhere('invoices.invoice_number', 'like', '%'.$filter.'%');
            });
        }

        return $query;
    }

    public function getClientDatatable($contactId, $entityType, $search)
    {
        $query = \DB::table('invitations')
          ->join('invoices', 'invoices.id', '=', 'invitations.invoice_id')
          ->join('clients', 'clients.id', '=', 'invoices.client_id')
          ->where('invitations.contact_id', '=', $contactId)
          ->where('invitations.deleted_at', '=', null)
          ->where('invoices.is_quote', '=', $entityType == ENTITY_QUOTE)
          ->where('invoices.is_deleted', '=', false)
          ->where('clients.deleted_at', '=', null)
          ->where('invoices.is_recurring', '=', false)
          ->select('invitation_key', 'invoice_number', 'invoice_date', 'invoices.balance as balance', 'due_date', 'clients.public_id as client_public_id', 'clients.name as client_name', 'invoices.public_id', 'amount', 'start_date', 'end_date', 'clients.currency_id', 'invoices.partial');

        $table = \Datatable::query($query)
            ->addColumn('invoice_number', function ($model) use ($entityType) { return link_to('/view/'.$model->invitation_key, $model->invoice_number); })
            ->addColumn('invoice_date', function ($model) { return Utils::fromSqlDate($model->invoice_date); })
            ->addColumn('amount', function ($model) { return Utils::formatMoney($model->amount, $model->currency_id); });

        if ($entityType == ENTITY_INVOICE) {
            $table->addColumn('balance', function ($model) {
                return $model->partial > 0 ?
                    trans('texts.partial_remaining', ['partial' => Utils::formatMoney($model->partial, $model->currency_id), 'balance' => Utils::formatMoney($model->balance, $model->currency_id)]) :
                    Utils::formatMoney($model->balance, $model->currency_id);
            });
        }

        return $table->addColumn('due_date', function ($model) { return Utils::fromSqlDate($model->due_date); })
            ->make();
    }

    public function getDatatable($accountId, $clientPublicId = null, $entityType, $search)
    {
        $query = $this->getInvoices($accountId, $clientPublicId, $entityType, $search)
              ->where('invoices.is_quote', '=', $entityType == ENTITY_QUOTE ? true : false);

        $table = \Datatable::query($query);

        if (!$clientPublicId) {
            $table->addColumn('checkbox', function ($model) { return '<input type="checkbox" name="ids[]" value="'.$model->public_id.'" '.Utils::getEntityRowClass($model).'>'; });
        }

        $table->addColumn("invoice_number", function ($model) use ($entityType) { return link_to("{$entityType}s/".$model->public_id.'/edit', $model->invoice_number, ['class' => Utils::getEntityRowClass($model)]); });

        if (!$clientPublicId) {
            $table->addColumn('client_name', function ($model) { return link_to('clients/'.$model->client_public_id, Utils::getClientDisplayName($model)); });
        }

        $table->addColumn("invoice_date", function ($model) { return Utils::fromSqlDate($model->invoice_date); })
              ->addColumn('amount', function ($model) { return Utils::formatMoney($model->amount, $model->currency_id); });

        if ($entityType == ENTITY_INVOICE) {
            $table->addColumn('balance', function ($model) {
                return $model->partial > 0 ?
                    trans('texts.partial_remaining', ['partial' => Utils::formatMoney($model->partial, $model->currency_id), 'balance' => Utils::formatMoney($model->balance, $model->currency_id)]) :
                    Utils::formatMoney($model->balance, $model->currency_id);
            });
        }

        return $table->addColumn('due_date', function ($model) { return Utils::fromSqlDate($model->due_date); })
        ->addColumn('invoice_status_name', function ($model) { return $model->quote_invoice_id ? link_to("invoices/{$model->quote_invoice_id}/edit", trans('texts.converted')) : self::getStatusLabel($model->invoice_status_id, $model->invoice_status_name); })
        ->addColumn('dropdown', function ($model) use ($entityType) {

            if ($model->is_deleted) {
                return '<div style="height:38px"/>';
            }

              $str = '<div class="btn-group tr-action" style="visibility:hidden;">
                  <button type="button" class="btn btn-xs btn-default dropdown-toggle" data-toggle="dropdown">
                    '.trans('texts.select').' <span class="caret"></span>
                  </button>
                <ul class="dropdown-menu" role="menu">';

            if (!$model->deleted_at || $model->deleted_at == '0000-00-00') {
                $str .= '<li><a href="'.\URL::to("{$entityType}s/".$model->public_id.'/edit').'">'.trans("texts.edit_{$entityType}").'</a></li>
                <li><a href="'.\URL::to("{$entityType}s/".$model->public_id.'/clone').'">'.trans("texts.clone_{$entityType}").'</a></li>
                <li><a href="' . \URL::to("{$entityType}s/{$entityType}_history/{$model->public_id}") . '">' . trans("texts.view_history") . '</a></li>
                <li class="divider"></li>';

                if ($model->invoice_status_id < INVOICE_STATUS_SENT) {
                    $str .= '<li><a href="javascript:markEntity('.$model->public_id.', '.INVOICE_STATUS_SENT.')">'.trans("texts.mark_sent").'</a></li>';
                }

                if ($entityType == ENTITY_INVOICE) {
                    if ($model->balance > 0) {
                        $str .= '<li><a href="'.\URL::to('payments/create/'.$model->client_public_id.'/'.$model->public_id).'">'.trans('texts.enter_payment').'</a></li>';
                    }

                    if ($model->quote_id) {
                        $str .= '<li><a href="'.\URL::to("quotes/{$model->quote_id}/edit").'">'.trans("texts.view_quote").'</a></li>';
                    }
                } elseif ($entityType == ENTITY_QUOTE) {
                    if ($model->quote_invoice_id) {
                        $str .= '<li><a href="'.\URL::to("invoices/{$model->quote_invoice_id}/edit").'">'.trans("texts.view_invoice").'</a></li>';
                    } else {
                        $str .= '<li><a href="javascript:convertEntity('.$model->public_id.')">'.trans("texts.convert_to_invoice").'</a></li>';
                    }
                }

                $str .= '<li class="divider"></li>
                      <li><a href="javascript:archiveEntity('.$model->public_id.')">'.trans("texts.archive_{$entityType}").'</a></li>
                    <li><a href="javascript:deleteEntity('.$model->public_id.')">'.trans("texts.delete_{$entityType}").'</a></li>';
            } else {
                $str .= '<li><a href="javascript:restoreEntity('.$model->public_id.')">'.trans("texts.restore_{$entityType}").'</a></li>
                        <li><a href="javascript:deleteEntity('.$model->public_id.')">'.trans("texts.delete_{$entityType}").'</a></li>';
            }

            return $str.'</ul>
                </div>';
        })
        ->make();
    }

    private function getStatusLabel($statusId, $statusName) {
        $label = trans("texts.status_" . strtolower($statusName));
        $class = 'default';
        switch ($statusId) {
            case INVOICE_STATUS_SENT:
                $class = 'info';
                break;
            case INVOICE_STATUS_VIEWED:
                $class = 'warning';
                break;
            case INVOICE_STATUS_PARTIAL:
                $class = 'primary';
                break;
            case INVOICE_STATUS_PAID:
                $class = 'success';
                break;
        }
        return "<h4><div class=\"label label-{$class}\">$label</div></h4>";
    }

    public function getErrors($input)
    {
        $contact = (array) $input->client->contacts[0];
        $rules = [
            'email' => 'email|required_without:first_name',
            'first_name' => 'required_without:email',
        ];
        $validator = \Validator::make($contact, $rules);

        if ($validator->fails()) {
            return $validator;
        }

        $invoice = (array) $input;
        $invoiceId = isset($invoice['public_id']) && $invoice['public_id'] ? Invoice::getPrivateId($invoice['public_id']) : null;
        $rules = [
          'invoice_number' => 'required|unique:invoices,invoice_number,'.$invoiceId.',id,account_id,'.\Auth::user()->account_id,
          'discount' => 'positive',
        ];

        if ($invoice['is_recurring'] && $invoice['start_date'] && $invoice['end_date']) {
            $rules['end_date'] = 'after:'.$invoice['start_date'];
        }

        $validator = \Validator::make($invoice, $rules);

        if ($validator->fails()) {
            return $validator;
        }

        return false;
    }

    public function save($publicId, $data, $entityType)
    {
        if ($publicId) {
            $invoice = Invoice::scope($publicId)->firstOrFail();
        } else {
            $invoice = Invoice::createNew();

            if ($entityType == ENTITY_QUOTE) {
                $invoice->is_quote = true;
            }
        }

        $account = \Auth::user()->account;

        if ((isset($data['set_default_terms']) && $data['set_default_terms'])
            || (isset($data['set_default_footer']) && $data['set_default_footer'])) {
            if (isset($data['set_default_terms']) && $data['set_default_terms']) {
                $account->invoice_terms = trim($data['terms']);
            }
            if (isset($data['set_default_footer']) && $data['set_default_footer']) {
                $account->invoice_footer = trim($data['invoice_footer']);
            }
            $account->save();
        }

        if (isset($data['invoice_number'])) {
            $invoice->invoice_number = trim($data['invoice_number']);
        }

        $invoice->discount = round(Utils::parseFloat($data['discount']), 2);
        $invoice->is_amount_discount = $data['is_amount_discount'] ? true : false;
        $invoice->partial = round(Utils::parseFloat($data['partial']), 2);
        $invoice->invoice_date = isset($data['invoice_date_sql']) ? $data['invoice_date_sql'] : Utils::toSqlDate($data['invoice_date']);
        $invoice->has_tasks = isset($data['has_tasks']) ? $data['has_tasks'] : false;
        
        if (!$publicId) {
            $invoice->client_id = $data['client_id'];
            $invoice->is_recurring = $data['is_recurring'] ? true : false;
        }
        
        if ($invoice->is_recurring) {
            if ($invoice->start_date && $invoice->start_date != Utils::toSqlDate($data['start_date'])) {
                $invoice->last_sent_date = null;
            }

            $invoice->frequency_id = $data['frequency_id'] ? $data['frequency_id'] : 0;
            $invoice->start_date = Utils::toSqlDate($data['start_date']);
            $invoice->end_date = Utils::toSqlDate($data['end_date']);
            $invoice->due_date = null;
            $invoice->auto_bill = isset($data['auto_bill']) && $data['auto_bill'] ? true : false;
        } else {
            $invoice->due_date = isset($data['due_date_sql']) ? $data['due_date_sql'] : Utils::toSqlDate($data['due_date']);
            $invoice->frequency_id = 0;
            $invoice->start_date = null;
            $invoice->end_date = null;
        }

        $invoice->terms = trim($data['terms']) ? trim($data['terms']) : (!$publicId && $account->invoice_terms ? $account->invoice_terms : '');
        $invoice->invoice_footer = trim($data['invoice_footer']) ? trim($data['invoice_footer']) : (!$publicId && $account->invoice_footer ? $account->invoice_footer : '');
        $invoice->public_notes = trim($data['public_notes']);

        // process date variables
        $invoice->terms = Utils::processVariables($invoice->terms);
        $invoice->invoice_footer = Utils::processVariables($invoice->invoice_footer);
        $invoice->public_notes = Utils::processVariables($invoice->public_notes);

        $invoice->po_number = trim($data['po_number']);
        $invoice->invoice_design_id = $data['invoice_design_id'];

        if (isset($data['tax_name']) && isset($data['tax_rate']) && $data['tax_name']) {
            $invoice->tax_rate = Utils::parseFloat($data['tax_rate']);
            $invoice->tax_name = trim($data['tax_name']);
        } else {
            $invoice->tax_rate = 0;
            $invoice->tax_name = '';
        }

        $total = 0;
        $itemTax = 0;

        foreach ($data['invoice_items'] as $item) {
            $item = (array) $item;
            if (!$item['cost'] && !$item['product_key'] && !$item['notes']) {
                continue;
            }

            $invoiceItemCost = round(Utils::parseFloat($item['cost']), 2);
            $invoiceItemQty = round(Utils::parseFloat($item['qty']), 2);

            $lineTotal = $invoiceItemCost * $invoiceItemQty;
            $total += round($lineTotal, 2);
        }

        foreach ($data['invoice_items'] as $item) {
            $item = (array) $item;
            if (isset($item['tax_rate']) && Utils::parseFloat($item['tax_rate']) > 0) {
                $invoiceItemCost = round(Utils::parseFloat($item['cost']), 2);
                $invoiceItemQty = round(Utils::parseFloat($item['qty']), 2);
                $invoiceItemTaxRate = Utils::parseFloat($item['tax_rate']);
                $lineTotal = $invoiceItemCost * $invoiceItemQty;

                if ($invoice->discount > 0) {
                    if ($invoice->is_amount_discount) {
                        $lineTotal -= round(($lineTotal/$total) * $invoice->discount, 2);
                    } else {
                        $lineTotal -= round($lineTotal * ($invoice->discount/100), 2);
                    }
                }

                $itemTax += round($lineTotal * $invoiceItemTaxRate / 100, 2);
            }
        }

        if ($invoice->discount > 0) {
            if ($invoice->is_amount_discount) {
                $total -= $invoice->discount;
            } else {
                $total *= (100 - $invoice->discount) / 100;
            }
        }

        $invoice->custom_value1 = round($data['custom_value1'], 2);
        $invoice->custom_value2 = round($data['custom_value2'], 2);
        $invoice->custom_taxes1 = $data['custom_taxes1'] ? true : false;
        $invoice->custom_taxes2 = $data['custom_taxes2'] ? true : false;

        if (isset($data['custom_text_value1'])) {
            $invoice->custom_text_value1 = trim($data['custom_text_value1']);
        }
        if (isset($data['custom_text_value2'])) {
            $invoice->custom_text_value2 = trim($data['custom_text_value2']);
        }

        // custom fields charged taxes
        if ($invoice->custom_value1 && $invoice->custom_taxes1) {
            $total += $invoice->custom_value1;
        }
        if ($invoice->custom_value2 && $invoice->custom_taxes2) {
            $total += $invoice->custom_value2;
        }

        $total += $total * $invoice->tax_rate / 100;
        $total = round($total, 2);
        $total += $itemTax;

        // custom fields not charged taxes
        if ($invoice->custom_value1 && !$invoice->custom_taxes1) {
            $total += $invoice->custom_value1;
        }
        if ($invoice->custom_value2 && !$invoice->custom_taxes2) {
            $total += $invoice->custom_value2;
        }

        if ($publicId) {
            $invoice->balance = $total - ($invoice->amount - $invoice->balance);
        } else {
            $invoice->balance = $total;
        }

        $invoice->amount = $total;
        $invoice->save();

        if ($publicId) {
            $invoice->invoice_items()->forceDelete();
        }

        foreach ($data['invoice_items'] as $item) {
            $item = (array) $item;
            if (!$item['cost'] && !$item['product_key'] && !$item['notes']) {
                continue;
            }

            if (isset($item['task_public_id']) && $item['task_public_id']) {
                $task = Task::scope($item['task_public_id'])->where('invoice_id', '=', null)->firstOrFail();
                $task->invoice_id = $invoice->id;
                $task->client_id = $invoice->client_id;
                $task->save();
            } else if ($item['product_key'] && !$invoice->has_tasks) {
                $product = Product::findProductByKey(trim($item['product_key']));

                if (\Auth::user()->account->update_products) {
                    if (!$product) {
                        $product = Product::createNew();
                        $product->product_key = trim($item['product_key']);
                    }

                    $product->notes = $item['notes'];
                    $product->cost = $item['cost'];
                    $product->save();
                }
            }

            $invoiceItem = InvoiceItem::createNew();
            $invoiceItem->product_id = isset($product) ? $product->id : null;
            $invoiceItem->product_key = trim($invoice->is_recurring ? $item['product_key'] : Utils::processVariables($item['product_key']));
            $invoiceItem->notes = trim($invoice->is_recurring ? $item['notes'] : Utils::processVariables($item['notes']));
            $invoiceItem->cost = Utils::parseFloat($item['cost']);
            $invoiceItem->qty = Utils::parseFloat($item['qty']);
            $invoiceItem->tax_rate = 0;

            if (isset($item['tax_rate']) && isset($item['tax_name']) && $item['tax_name']) {
                $invoiceItem['tax_rate'] = Utils::parseFloat($item['tax_rate']);
                $invoiceItem['tax_name'] = trim($item['tax_name']);
            }

            $invoice->invoice_items()->save($invoiceItem);
        }

        return $invoice;
    }

    public function cloneInvoice($invoice, $quotePublicId = null)
    {
        $invoice->load('invitations', 'invoice_items');
        $account = $invoice->account;

        $clone = Invoice::createNew($invoice);
        $clone->balance = $invoice->amount;

        // if the invoice prefix is diff than quote prefix, use the same number for the invoice
        if (($account->invoice_number_prefix || $account->quote_number_prefix) 
            && $account->invoice_number_prefix != $account->quote_number_prefix
            && $account->share_counter) {

            $invoiceNumber = $invoice->invoice_number;
            if ($account->quote_number_prefix && strpos($invoiceNumber, $account->quote_number_prefix) === 0) {
                $invoiceNumber = substr($invoiceNumber, strlen($account->quote_number_prefix));
            }
            $clone->invoice_number = $account->invoice_number_prefix.$invoiceNumber;
        } else {
            $clone->invoice_number = $account->getNextInvoiceNumber();
        }

        foreach ([
          'client_id',
          'discount',
          'is_amount_discount',
          'invoice_date',
          'po_number',
          'due_date',
          'is_recurring',
          'frequency_id',
          'start_date',
          'end_date',
          'terms',
          'invoice_footer',
          'public_notes',
          'invoice_design_id',
          'tax_name',
          'tax_rate',
          'amount',
          'is_quote',
          'custom_value1',
          'custom_value2',
          'custom_taxes1',
          'custom_taxes2',
          'partial',
          'custom_text_value1',
          'custom_text_value2'] as $field) {
            $clone->$field = $invoice->$field;
        }

        if ($quotePublicId) {
            $clone->is_quote = false;
            $clone->quote_id = $quotePublicId;
        }

        $clone->save();

        if ($quotePublicId) {
            $invoice->quote_invoice_id = $clone->public_id;
            $invoice->save();
        }

        foreach ($invoice->invoice_items as $item) {
            $cloneItem = InvoiceItem::createNew($invoice);

            foreach ([
                'product_id',
                'product_key',
                'notes',
                'cost',
                'qty',
                'tax_name',
                'tax_rate', ] as $field) {
                $cloneItem->$field = $item->$field;
            }

            $clone->invoice_items()->save($cloneItem);
        }

        foreach ($invoice->invitations as $invitation) {
            $cloneInvitation = Invitation::createNew($invoice);
            $cloneInvitation->contact_id = $invitation->contact_id;
            $cloneInvitation->invitation_key = str_random(RANDOM_KEY_LENGTH);
            $clone->invitations()->save($cloneInvitation);
        }

        return $clone;
    }

    public function bulk($ids, $action, $statusId = false)
    {
        if (!$ids) {
            return 0;
        }

        $invoices = Invoice::withTrashed()->scope($ids)->get();

        foreach ($invoices as $invoice) {
            if ($action == 'mark') {
                $invoice->invoice_status_id = $statusId;
                $invoice->save();
            } elseif ($action == 'restore') {
                $invoice->restore();
            } else {
                if ($action == 'delete') {
                    $invoice->is_deleted = true;
                    $invoice->save();
                }

                $invoice->delete();
            }
        }

        return count($invoices);
    }

    public function findInvoiceByInvitation($invitationKey)
    {
        $invitation = Invitation::where('invitation_key', '=', $invitationKey)->first();

        if (!$invitation) {
            return false;
        }

        $invoice = $invitation->invoice;
        if (!$invoice || $invoice->is_deleted) {
            return false;
        }

        $invoice->load('user', 'invoice_items', 'invoice_design', 'account.country', 'client.contacts', 'client.country');
        $client = $invoice->client;

        if (!$client || $client->is_deleted) {
            return false;
        }

        return $invitation;
    }

    public function findOpenInvoices($clientId)
    {
        return Invoice::scope()
                ->whereClientId($clientId)
                ->whereIsQuote(false)
                ->whereIsRecurring(false)
                ->whereDeletedAt(null)
                ->whereHasTasks(true)
                ->where('invoice_status_id', '<', 5)
                ->select(['public_id', 'invoice_number'])
                ->get();
    }

    public function createRecurringInvoice($recurInvoice)
    {
        $recurInvoice->load('account.timezone', 'invoice_items', 'client', 'user');

        if ($recurInvoice->client->deleted_at) {
            return false;
        }

        if (!$recurInvoice->user->confirmed) {
            return false;
        }

        if (!$recurInvoice->shouldSendToday()) {
            return false;
        }

        $invoice = Invoice::createNew($recurInvoice);
        $invoice->client_id = $recurInvoice->client_id;
        $invoice->recurring_invoice_id = $recurInvoice->id;
        $invoice->invoice_number = $recurInvoice->account->getNextInvoiceNumber(false, 'R');
        $invoice->amount = $recurInvoice->amount;
        $invoice->balance = $recurInvoice->amount;
        $invoice->invoice_date = date_create()->format('Y-m-d');
        $invoice->discount = $recurInvoice->discount;
        $invoice->po_number = $recurInvoice->po_number;
        $invoice->public_notes = Utils::processVariables($recurInvoice->public_notes);
        $invoice->terms = Utils::processVariables($recurInvoice->terms);
        $invoice->invoice_footer = Utils::processVariables($recurInvoice->invoice_footer);
        $invoice->tax_name = $recurInvoice->tax_name;
        $invoice->tax_rate = $recurInvoice->tax_rate;
        $invoice->invoice_design_id = $recurInvoice->invoice_design_id;
        $invoice->custom_value1 = $recurInvoice->custom_value1;
        $invoice->custom_value2 = $recurInvoice->custom_value2;
        $invoice->custom_taxes1 = $recurInvoice->custom_taxes1;
        $invoice->custom_taxes2 = $recurInvoice->custom_taxes2;
        $invoice->custom_text_value1 = $recurInvoice->custom_text_value1;
        $invoice->custom_text_value2 = $recurInvoice->custom_text_value2;
        $invoice->is_amount_discount = $recurInvoice->is_amount_discount;

        if ($invoice->client->payment_terms != 0) {
            $days = $invoice->client->payment_terms;
            if ($days == -1) {
                $days = 0;
            }
            $invoice->due_date = date_create()->modify($days.' day')->format('Y-m-d');
        }

        $invoice->save();

        foreach ($recurInvoice->invoice_items as $recurItem) {
            $item = InvoiceItem::createNew($recurItem);
            $item->product_id = $recurItem->product_id;
            $item->qty = $recurItem->qty;
            $item->cost = $recurItem->cost;
            $item->notes = Utils::processVariables($recurItem->notes);
            $item->product_key = Utils::processVariables($recurItem->product_key);
            $item->tax_name = $recurItem->tax_name;
            $item->tax_rate = $recurItem->tax_rate;
            $invoice->invoice_items()->save($item);
        }

        foreach ($recurInvoice->invitations as $recurInvitation) {
            $invitation = Invitation::createNew($recurInvitation);
            $invitation->contact_id = $recurInvitation->contact_id;
            $invitation->invitation_key = str_random(RANDOM_KEY_LENGTH);
            $invoice->invitations()->save($invitation);
        }

        $recurInvoice->last_sent_date = date('Y-m-d');
        $recurInvoice->save();

        if ($recurInvoice->auto_bill) {
            if ($this->paymentService->autoBillInvoice($invoice)) {
                $invoice->invoice_status_id = INVOICE_STATUS_PAID;
            }
        }

        return $invoice;
    }

    public function findNeedingReminding($account)
    {
        $dates = [];
        for ($i=1; $i<=3; $i++) {
            $field = "enable_reminder{$i}";
            if (!$account->$field) {
                continue;
            }
            $field = "num_days_reminder{$i}";
            $dates[] = "due_date = '" . date('Y-m-d', strtotime("- {$account->$field} days")) . "'";
        }
        $sql = implode(' OR ', $dates);

        $invoices = Invoice::whereAccountId($account->id)
                    ->where('balance', '>', 0)
                    ->whereRaw('(' . $sql . ')')
                    ->get();

        return $invoices;
    }
}