<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsTo;
use Illuminate\Database\Eloquent\Relations\BelongsToMany;
use Illuminate\Database\Eloquent\SoftDeletes;

class Job extends Model
{
    use SoftDeletes;

    protected $fillable = [
        'external_id',
        'title',
        'company',
        'description',
        'location',
        'salary_min',
        'salary_max',
        'salary_currency',
        'job_type',
        'job_source_id',
        'source_url',
        'apply_url',
        'posted_at',
        'expires_at',
        'remote_allowed',
        'experience_level',
        'job_category_id',
        'job_location_id',
        'fingerprint',
    ];

    protected $casts = [
        'posted_at' => 'datetime',
        'expires_at' => 'datetime',
        'remote_allowed' => 'boolean',
        'salary_min' => 'decimal:2',
        'salary_max' => 'decimal:2',
    ];

    /**
     * Get the source that provides this job.
     */
    public function source(): BelongsTo
    {
        return $this->belongsTo(JobSource::class, 'job_source_id');
    }

    /**
     * Get the category that this job belongs to.
     */
    public function category(): BelongsTo
    {
        return $this->belongsTo(JobCategory::class, 'job_category_id');
    }

    /**
     * Get the location of this job.
     */
    public function jobLocation(): BelongsTo
    {
        return $this->belongsTo(JobLocation::class, 'job_location_id');
    }

    /**
     * Get the users who saved this job.
     */
    public function savedByUsers(): BelongsToMany
    {
        return $this->belongsToMany(User::class, 'user_saved_jobs')
            ->withTimestamps();
    }

    /**
     * Scope a query to only include active jobs.
     */
    public function scopeActive($query)
    {
        return $query->where(function ($q) {
            $q->whereNull('expires_at')
                ->orWhere('expires_at', '>', now());
        });
    }

    /**
     * Scope a query to only include remote jobs.
     */
    public function scopeRemote($query)
    {
        return $query->where('remote_allowed', true);
    }

    /**
     * Scope a query to filter by job type.
     */
    public function scopeOfType($query, string $type)
    {
        return $query->where('job_type', $type);
    }

    /**
     * Scope a query to filter by experience level.
     */
    public function scopeExperienceLevel($query, string $level)
    {
        return $query->where('experience_level', $level);
    }
}