<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Model;

class SubscriptionChange extends Model
{
    protected $fillable = [
        'subscription_id',
        'user_id',
        'change_type',
        'change_description',
        'old_values',
        'new_values',
        'reason',
        'effective_at',
        'processed_at',
        'is_processed',
        'metadata',
    ];

    protected $casts = [
        'old_values' => 'array',
        'new_values' => 'array',
        'effective_at' => 'datetime',
        'processed_at' => 'datetime',
        'is_processed' => 'boolean',
        'metadata' => 'array',
    ];

    protected $dates = [
        'effective_at',
        'processed_at',
    ];

    /**
     * Relationships
     */
    public function subscription()
    {
        return $this->belongsTo(Subscription::class);
    }

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

    /**
     * Get human-readable change type
     */
    public function getChangeTypeLabelAttribute(): string
    {
        return [
            'plan_change' => 'Plan Change',
            'cancellation' => 'Cancellation',
            'pause' => 'Pause',
            'resume' => 'Resume',
            'migration' => 'Migration',
            'provider_change' => 'Provider Change',
        ][$this->change_type] ?? ucfirst($this->change_type);
    }

    /**
     * Mark as processed
     */
    public function markAsProcessed(): void
    {
        $this->update([
            'is_processed' => true,
            'processed_at' => now(),
        ]);
    }

    /**
     * Scope: By change type
     */
    public function scopeByType($query, string $type)
    {
        return $query->where('change_type', $type);
    }

    /**
     * Scope: Processed
     */
    public function scopeProcessed($query)
    {
        return $query->where('is_processed', true);
    }

    /**
     * Scope: Pending processing
     */
    public function scopePending($query)
    {
        return $query->where('is_processed', false);
    }

    /**
     * Scope: By user
     */
    public function scopeByUser($query, $userId)
    {
        return $query->where('user_id', $userId);
    }

    /**
     * Scope: Within date range
     */
    public function scopeBetweenDates($query, $startDate, $endDate)
    {
        return $query->whereBetween('effective_at', [$startDate, $endDate]);
    }

    /**
     * Create a subscription change record
     */
    public static function createRecord(
        Subscription $subscription,
        string $changeType,
        string $description,
        ?array $oldValues = null,
        ?array $newValues = null,
        ?string $reason = null
    ): self {
        return static::create([
            'subscription_id' => $subscription->id,
            'user_id' => $subscription->user_id,
            'change_type' => $changeType,
            'change_description' => $description,
            'old_values' => $oldValues,
            'new_values' => $newValues,
            'reason' => $reason,
            'effective_at' => now(),
        ]);
    }
}