<?php

namespace App\Notifications;

use App\Models\EmployeeLeave;
use Carbon\Carbon;
use Illuminate\Bus\Queueable;
use Illuminate\Contracts\Queue\ShouldQueue;
use Illuminate\Notifications\Messages\MailMessage;
use Illuminate\Notifications\Notification;
use Swift_Message;

class Leave extends Notification
{
    use Queueable;

    private string $message;

    /**
     * Create a new notification instance.
     */
    public function __construct(private EmployeeLeave $leave)
    {
        $this->message = $this->generateMessage();
    }

    /**
     * Get the notification's delivery channels.
     *
     * @return array<int, string>
     */
    public function via(object $notifiable): array
    {
        return ['mail', 'database'];
    }

    /**
     * Get the mail representation of the notification.
     */
    public function toMail(object $notifiable): MailMessage
    {
        return (new MailMessage)
        ->view('emails.leave', [
            'headerImageUrl' => asset('images/AUTOHUB25_BANNER.png'), // URL of the image
            'msg' => $this->message,
            'notifiable' => $notifiable,
        ])
        ->subject('Leave Notification');
    }

    /**
     * Get the array representation of the notification.
     *
     * @return array<string, mixed>
     */
    public function toArray(object $notifiable): array
    {
        $title = null;
        $isApprover = false;

        if($this->leave->validated == 1){
            $title = "Your leave application has been received and validated by HR";
        }else if($this->leave->validated == 99){
            $title = "Your leave application has been denied by HR";
        }else if($this->leave->status == 2){
           $title =  "Your leave application has been approved";
        }else if($this->leave->status == 99){
            $title = "Your leave application has been denied";
        }else{
            $title = $this->leave->employee->firstname . ' ' . $this->leave->employee->lastname." Submitted Leave Application";
            $isApprover = true;
        }  

        return [
            'leave_id' => $this->leave->id,
            'status' => $this->leave->status,
            'approved_at' => $this->leave->approved_at,
            'message' => $this->message,
            'title' => $title,
            'url' => $isApprover ? 'attendance/leave-approval' : 'attendance/leave',
            'created_by' => $this->leave->employee_id
        ];
    }

    /**
     * Generate the message based on leave status.
     */
    private function generateMessage(): string
    {
        $fullname = $this->leave->employee->firstname . ' ' . $this->leave->employee->lastname;
        $date_from = $this->leave->date_from;
        $date_to = $this->leave->date_to;
        $leave_type = $this->leave->leave_type->name;
        $created_at = Carbon::parse($this->leave->created_at)->setTimezone('Asia/Shanghai');

        switch ($this->leave->status) {
            case 1:
            case 0:
                return "$fullname filed a $leave_type application dated \"$date_from\" to \"$date_to\" for your validation.";
            case 2:
                if($this->leave->validated == 1){
                    return "Your application for $leave_type dated \"$date_from\" to \"$date_to\" has been received and alidated by HR.";
                }else if($this->leave->validated == 99){
                    return "Your application for $leave_type dated \"$date_from\" to \"$date_to\" has been denied by HR.";
                }else{
                    return "Your application for $leave_type dated \"$date_from\" to \"$date_to\" has been approved.";
                }
                
            case 99:
                return "Your application for $leave_type dated \"$date_from\" to \"$date_to\" has been denied.";
            default:
                return 'Unknown status.';
        }
    }
}