<?php
/**
 * Invoice Ninja (https://invoiceninja.com)
 *
 * @link https://github.com/invoiceninja/invoiceninja source repository
 *
 * @copyright Copyright (c) 2020. Invoice Ninja LLC (https://invoiceninja.com)
 *
 * @license https://opensource.org/licenses/AAL
 */

namespace App\Models;

use App\Events\Invoice\InvoiceWasMarkedSent;
use App\Events\Invoice\InvoiceWasPaid;
use App\Events\Invoice\InvoiceWasUpdated;
use App\Helpers\Invoice\InvoiceSum;
use App\Helpers\Invoice\InvoiceSumInclusive;
use App\Jobs\Client\UpdateClientBalance;
use App\Jobs\Company\UpdateCompanyLedgerWithInvoice;
use App\Jobs\Invoice\CreateInvoicePdf;
use App\Models\Backup;
use App\Models\CompanyLedger;
use App\Models\Currency;
use App\Models\Filterable;
use App\Models\PaymentTerm;
use App\Services\Invoice\InvoiceService;
use App\Services\Ledger\LedgerService;
use App\Utils\Ninja;
use App\Utils\Number;
use App\Utils\Traits\Archivable;
use App\Utils\Traits\InvoiceEmailBuilder;
use App\Utils\Traits\Invoice\ActionsInvoice;
use App\Utils\Traits\MakesDates;
use App\Utils\Traits\MakesInvoiceValues;
use App\Utils\Traits\MakesReminders;
use App\Utils\Traits\NumberFormatter;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\SoftDeletes;
use Illuminate\Support\Carbon;
use Illuminate\Support\Facades\File;
use Illuminate\Support\Facades\Storage;
use Laracasts\Presenter\PresentableTrait;

class Invoice extends BaseModel
{
    use SoftDeletes;
    use Filterable;
    use NumberFormatter;
    use MakesDates;
    use PresentableTrait;
    use MakesInvoiceValues;
    use InvoiceEmailBuilder;
    use MakesReminders;
    use ActionsInvoice;

    protected $presenter = 'App\Models\Presenters\InvoicePresenter';

    protected $touches = [];

    protected $hidden = [
        'id',
        'private_notes',
        'user_id',
        'client_id',
        'company_id',
    ];

    protected $fillable = [
        'number',
        'discount',
        'po_number',
        'date',
        'due_date',
        'terms',
        'public_notes',
        'private_notes',
        'invoice_type_id',
        'tax_name1',
        'tax_rate1',
        'tax_name2',
        'tax_rate2',
        'tax_name3',
        'tax_rate3',
        'is_amount_discount',
        'footer',
        'partial',
        'partial_due_date',
        'custom_value1',
        'custom_value2',
        'custom_value3',
        'custom_value4',
        'line_items',
        'client_id',
        'footer',
        'custom_surcharge1',
        'custom_surcharge2',
        'custom_surcharge3',
        'custom_surcharge4',
        'custom_surcharge_tax1',
        'custom_surcharge_tax2',
        'custom_surcharge_tax3',
        'custom_surcharge_tax4',
        'design_id',
        'assigned_user_id',
        'exchange_rate'
    ];

    protected $casts = [
        // 'date' => 'date:Y-m-d',
        // 'due_date' => 'date:Y-m-d',
        // 'partial_due_date' => 'date:Y-m-d',
        'line_items' => 'object',
        'backup' => 'object',
        'updated_at' => 'timestamp',
        'created_at' => 'timestamp',
        'deleted_at' => 'timestamp',
    ];

    protected $with = [];

    protected $appends = [
        'hashed_id',
        'status'
    ];

    const STATUS_DRAFT = 1;
    const STATUS_SENT = 2;
    const STATUS_PARTIAL = 3;
    const STATUS_PAID = 4;
    const STATUS_CANCELLED = 5;
    const STATUS_REVERSED = 6;

    const STATUS_OVERDUE = -1; //status < 4 || < 3 && !is_deleted && !trashed() && due_date < now()
    const STATUS_UNPAID = -2; //status < 4 || < 3 && !is_deleted && !trashed()

    public function getEntityType()
    {
        return Invoice::class;
    }

    public function getDateAttribute($value)
    {
        return $this->dateMutator($value);
    }

    public function getDueDateAttribute($value)
    {
        return $this->dateMutator($value);
    }

    public function getPartialDueDateAttribute($value)
    {
        return $this->dateMutator($value);
    }


    public function company()
    {
        return $this->belongsTo(Company::class);
    }

    public function user()
    {
        return $this->belongsTo(User::class)->withTrashed();
    }

    public function assigned_user()
    {
        return $this->belongsTo(User::class, 'assigned_user_id', 'id')->withTrashed();
    }

    public function invitations()
    {
        return $this->hasMany(InvoiceInvitation::class);
    }

    public function client()
    {
        return $this->belongsTo(Client::class)->withTrashed();
    }

    // public function contacts()
    // {
    //     return $this->hasManyThrough(ClientContact::class, Client::class);
    // }

    public function documents()
    {
        return $this->morphMany(Document::class, 'documentable');
    }

    public function payments()
    {
        return $this->morphToMany(Payment::class, 'paymentable')->withPivot('amount', 'refunded')->withTimestamps()->withTrashed();
    }

    public function company_ledger()
    {
        return $this->morphMany(CompanyLedger::class, 'company_ledgerable');
    }

    public function activities()
    {
        return $this->hasMany(Activity::class);
    }

    public function history()
    {
        return $this->hasManyThrough(Backup::class, Activity::class);
    }

    public function credits()
    {
        return $this->hasMany(Credit::class);
    }
    // public function credits()
    // {
    //     return $this->belongsToMany(Credit::class)->using(Paymentable::class)->withPivot(
    //         'amount',
    //         'refunded'
    //     )->withTimestamps();
    // }

    /**
     * Service entry points
     */
    public function service() :InvoiceService
    {
        return new InvoiceService($this);
    }

    public function ledger()
    {
        return new LedgerService($this);
    }

    /* ---------------- */
    /* Settings getters */
    /* ---------------- */

    public function getStatusAttribute()
    {
        if ($this->status_id == Invoice::STATUS_SENT && $this->due_date > Carbon::now()) {
            return Invoice::STATUS_UNPAID;
        } elseif ($this->status_id == Invoice::STATUS_PARTIAL && $this->partial_due_date > Carbon::now()) {
            return Invoice::STATUS_UNPAID;
        } elseif ($this->status_id == Invoice::STATUS_SENT && $this->due_date < Carbon::now()) {
            return Invoice::STATUS_OVERDUE;
        } elseif ($this->status_id == Invoice::STATUS_PARTIAL && $this->partial_due_date < Carbon::now()) {
            return Invoice::STATUS_OVERDUE;
        } else {
            return $this->status_id;
        }
    }

    public function isPayable(): bool
    {
        if($this->status_id == Invoice::STATUS_DRAFT && $this->is_deleted == false){
            return true;
        }else if ($this->status_id == Invoice::STATUS_SENT && $this->is_deleted == false) {
            return true;
        } elseif ($this->status_id == Invoice::STATUS_PARTIAL && $this->is_deleted == false) {
            return true;
        } elseif ($this->status_id == Invoice::STATUS_SENT && $this->is_deleted == false) {
            return true;
        } elseif ($this->status_id == Invoice::STATUS_DRAFT && $this->is_deleted == false) {
            return true;
        } else {
            return false;
        }
    }

    public function isRefundable(): bool
    {
        if ($this->is_deleted) {
            return false;
        }

        if (($this->amount - $this->balance) == 0) {
            return false;
        }

        return true;
    }

    /**
     * @return bool
     */
    public function isPartial(): bool
    {
        return $this->status_id >= self::STATUS_PARTIAL;
    }

    /**
     * @return bool
     */
    public function hasPartial(): bool
    {
        return ($this->partial && $this->partial > 0) === true;
    }

    public static function badgeForStatus(int $status)
    {
        switch ($status) {
            case Invoice::STATUS_DRAFT:
                return '<h5><span class="badge badge-light">' . ctrans('texts.draft') . '</span></h5>';
                break;
            case Invoice::STATUS_SENT:
                return '<h5><span class="badge badge-primary">' . ctrans('texts.sent') . '</span></h5>';
                break;
            case Invoice::STATUS_PARTIAL:
                return '<h5><span class="badge badge-primary">' . ctrans('texts.partial') . '</span></h5>';
                break;
            case Invoice::STATUS_PAID:
                return '<h5><span class="badge badge-success">' . ctrans('texts.paid') . '</span></h5>';
                break;
            case Invoice::STATUS_CANCELLED:
                return '<h5><span class="badge badge-secondary">' . ctrans('texts.cancelled') . '</span></h5>';
                break;
            case Invoice::STATUS_OVERDUE:
                return '<h5><span class="badge badge-danger">' . ctrans('texts.overdue') . '</span></h5>';
                break;
            case Invoice::STATUS_UNPAID:
                return '<h5><span class="badge badge-warning">' . ctrans('texts.unpaid') . '</span></h5>';
                break;
            case Invoice::STATUS_REVERSED:
                return '<h5><span class="badge badge-info">' . ctrans('texts.reversed') . '</span></h5>';
                break;
            default:
                # code...
                break;
        }
    }

    public static function stringStatus(int $status)
    {
        switch ($status) {
            case Invoice::STATUS_DRAFT:
                return ctrans('texts.draft');
                break;
            case Invoice::STATUS_SENT:
                return ctrans('texts.sent');
                break;
            case Invoice::STATUS_PARTIAL:
                return ctrans('texts.partial');
                break;
            case Invoice::STATUS_PAID:
                return ctrans('texts.paid');
                break;
            case Invoice::STATUS_CANCELLED:
                return ctrans('texts.cancelled');
                break;
            case Invoice::STATUS_OVERDUE:
                return ctrans('texts.overdue');
                break;
            case Invoice::STATUS_UNPAID:
                return ctrans('texts.unpaid');
                break;
            case Invoice::STATUS_REVERSED:
                return ctrans('texts.reversed');
                break;
            default:
                # code...
                break;
        }
    }

    /**
     * Access the invoice calculator object
     *
     * @return object The invoice calculator object getters
     */
    public function calc()
    {
        $invoice_calc = null;

        if ($this->uses_inclusive_taxes) {
            $invoice_calc = new InvoiceSumInclusive($this);
        } else {
            $invoice_calc = new InvoiceSum($this);
        }

        return $invoice_calc->build();
    }

    public function pdf_file_path($invitation = null)
    {
        if(!$invitation)
            $invitation = $this->invitations->first();

        $storage_path = Storage::url($this->client->invoice_filepath() . $this->number . '.pdf');

        if (!Storage::exists($this->client->invoice_filepath() . $this->number . '.pdf')) {
            event(new InvoiceWasUpdated($this, $this->company, Ninja::eventVars()));
            CreateInvoicePdf::dispatchNow($invitation);
        }

        return $storage_path;
    }


    /**
     * Updates Invites to SENT
     *
     */
    public function markInvitationsSent()
    {
        $this->invitations->each(function ($invitation) {
            if (!isset($invitation->sent_date)) {
                $invitation->sent_date = Carbon::now();
                $invitation->save();
            }
        });
    }

    /**
     * Filtering logic to determine
     * whether an invoice is locked 
     * based on the current status of the invoice
     * @return boolean [description]
     */
    public function isLocked() :bool
    {
        $locked_status = $this->client->getSetting('lock_invoices');

        switch ($locked_status) {
            case 'off':
                return false;
                break;
            case 'when_sent':
                return $this->status_id == self::STATUS_DRAFT;
                break;
            case 'when_paid':
                return $this->status_id == self::STATUS_PAID || $this->status_id == self::STATUS_PARTIAL;
                break;            
            default:
                return false;
                break;
        }
    }

    /* Graveyard */

//    /**
//     * Determines if invoice overdue.
//     *
//     * @param      float    $balance   The balance
//     * @param      date.    $due_date  The due date
//     *
//     * @return     boolean  True if overdue, False otherwise.
//     */
//    public static function isOverdue($balance, $due_date)
//    {
//        if (! $this->formatValue($balance,2) > 0 || ! $due_date) {
//            return false;
//        }
//
//        // it isn't considered overdue until the end of the day
//        return strtotime($this->createClientDate(date(), $this->client->timezone()->name)) > (strtotime($due_date) + (60 * 60 * 24));
//    }


    /**
     * @param bool $save
     *
     * Has this been dragged from V1?
     */
    // public function updatePaidStatus($paid = false, $save = true) : bool
    // {
    //     $status_id = false;
    //     if ($paid && $this->balance == 0) {
    //         $status_id = self::STATUS_PAID;
    //     } elseif ($paid && $this->balance > 0 && $this->balance < $this->amount) {
    //         $status_id = self::STATUS_PARTIAL;
    //     } elseif ($this->hasPartial() && $this->balance > 0) {
    //         $status_id = ($this->balance == $this->amount ? self::STATUS_SENT : self::STATUS_PARTIAL);
    //     }

    //     if ($status_id && $status_id != $this->status_id) {
    //         $this->status_id = $status_id;
    //         if ($save) {
    //             $this->save();
    //         }
    //     }
    // }

    public function getBalanceDueAttribute()
    {
        return $this->balance;
    }

    public function getTotalAttribute()
    {
        return $this->calc()->getTotal();
    }
}