<?php

namespace Modules\ManagementTools\Entities;

use App\User;
use Illuminate\Database\Eloquent\Model;

class MtUserTask extends Model
{
    public const SOURCE_SYSTEM = 'system';

    public const SOURCE_USER = 'user';

    public const APPROVAL_PENDING = 'pending';

    public const APPROVAL_APPROVED = 'approved';

    public const APPROVAL_REJECTED = 'rejected';

    protected $table = 'mt_user_tasks';

    protected $guarded = ['id'];

    protected $casts = [
        'due_date' => 'date',
        'approved_at' => 'datetime',
    ];

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

    public function scopeForBusiness($query, $business_id)
    {
        return $query->where('business_id', $business_id);
    }

    public function scopeActive($query)
    {
        return $query->where('task_status', 0);
    }

    public function scopeAssignable($query)
    {
        return $query->where(function ($q) {
            $q->where('task_source', self::SOURCE_SYSTEM)
                ->orWhere('approval_status', self::APPROVAL_APPROVED);
        });
    }

    public function scopeSystemTasks($query)
    {
        return $query->where('task_source', self::SOURCE_SYSTEM);
    }

    public function scopeUserSubmitted($query)
    {
        return $query->where('task_source', self::SOURCE_USER);
    }

    public function scopePendingApproval($query)
    {
        return $query->userSubmitted()->where('approval_status', self::APPROVAL_PENDING);
    }

    public function creator()
    {
        return $this->belongsTo(User::class, 'created_by');
    }

    public function approver()
    {
        return $this->belongsTo(User::class, 'approved_by');
    }

    public function timeLines()
    {
        return $this->hasMany(MtUserTimeLine::class, 'user_task_id');
    }

    public function dailyReports()
    {
        return $this->hasMany(MtDailyReport::class, 'mt_user_task_id');
    }

    public function ppProject()
    {
        return $this->belongsTo(\Modules\ProfessionalProject\Entities\PpProject::class, 'project_id');
    }

    public function isSystemTask(): bool
    {
        return $this->task_source === self::SOURCE_SYSTEM;
    }

    public function isUserSubmitted(): bool
    {
        return $this->task_source === self::SOURCE_USER;
    }

    public function isPendingApproval(): bool
    {
        return $this->isUserSubmitted() && $this->approval_status === self::APPROVAL_PENDING;
    }

    public function isAssignable(): bool
    {
        return $this->isSystemTask() || $this->approval_status === self::APPROVAL_APPROVED;
    }

    public static function statusLabels(): array
    {
        return [
            0 => __('managementtools::lang.task_status_active'),
            1 => __('managementtools::lang.task_status_completed'),
            2 => __('managementtools::lang.task_status_cancelled'),
        ];
    }

    public static function sourceLabels(): array
    {
        return [
            self::SOURCE_SYSTEM => __('managementtools::lang.task_source_system'),
            self::SOURCE_USER => __('managementtools::lang.task_source_user'),
        ];
    }

    public static function approvalLabels(): array
    {
        return [
            self::APPROVAL_PENDING => __('managementtools::lang.approval_pending'),
            self::APPROVAL_APPROVED => __('managementtools::lang.approval_approved'),
            self::APPROVAL_REJECTED => __('managementtools::lang.approval_rejected'),
        ];
    }

    public function statusLabel(): string
    {
        return self::statusLabels()[$this->task_status] ?? '—';
    }

    public function sourceLabel(): string
    {
        return self::sourceLabels()[$this->task_source] ?? '—';
    }

    public function approvalLabel(): ?string
    {
        if ($this->isSystemTask()) {
            return null;
        }

        return self::approvalLabels()[$this->approval_status] ?? '—';
    }

    public function sourceBadgeHtml(): string
    {
        if ($this->isSystemTask()) {
            return '<span class="label label-primary">'.e($this->sourceLabel()).'</span>';
        }

        return '<span class="label label-warning">'.e($this->sourceLabel()).'</span>';
    }

    public function approvalBadgeHtml(): string
    {
        if ($this->isSystemTask()) {
            return '<span class="text-muted">—</span>';
        }

        $class = match ($this->approval_status) {
            self::APPROVAL_APPROVED => 'label-success',
            self::APPROVAL_REJECTED => 'label-danger',
            default => 'label-warning',
        };

        return '<span class="label '.$class.'">'.e($this->approvalLabel()).'</span>';
    }
}