<?php

namespace App\Models;

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

class HealthCheck extends Model
{
    protected $fillable = [
        'site_id',
        'endpoint',
        'expected_json_keys',
        'last_checked_at',
        'is_healthy',
        'response_data',
        'response_time_ms',
        'performance_threshold',
        'status_code',
        'is_active',
    ];

    protected $casts = [
        'expected_json_keys' => 'array',
        'response_data' => 'array',
        'last_checked_at' => 'datetime',
        'is_healthy' => 'boolean',
        'is_active' => 'boolean',
    ];

    /**
     * Get the site that owns the health check.
     */
    public function site(): BelongsTo
    {
        return $this->belongsTo(Site::class);
    }

    /**
     * Scope to filter active health checks.
     */
    public function scopeActive($query)
    {
        return $query->where('is_active', true);
    }

    /**
     * Scope to filter healthy checks.
     */
    public function scopeHealthy($query)
    {
        return $query->where('is_healthy', true);
    }

    /**
     * Scope to filter unhealthy checks.
     */
    public function scopeUnhealthy($query)
    {
        return $query->where('is_healthy', false);
    }

    /**
     * Get the full URL for the health check endpoint.
     */
    public function getFullUrlAttribute(): string
    {
        $siteUrl = rtrim($this->site->url, '/');
        $endpoint = ltrim($this->endpoint, '/');

        return $siteUrl . '/' . $endpoint;
    }

    /**
     * Get status badge color.
     */
    public function getStatusColorAttribute(): string
    {
        if ($this->is_healthy === null) {
            return 'secondary';
        }

        return $this->is_healthy ? 'success' : 'danger';
    }

    /**
     * Get status text.
     */
    public function getStatusTextAttribute(): string
    {
        if ($this->is_healthy === null) {
            return 'Unknown';
        }

        return $this->is_healthy ? 'Healthy' : 'Unhealthy';
    }

    /**
     * Get display name for the endpoint.
     */
    public function getDisplayNameAttribute(): string
    {
        return $this->endpoint ?: 'Health Check';
    }

    /**
     * Validate if response contains all expected keys.
     */
    public function validateResponseKeys(array $responseData): bool
    {
        if (empty($this->expected_json_keys)) {
            return true;
        }

        foreach ($this->expected_json_keys as $key) {
            if (!$this->hasNestedKey($responseData, $key)) {
                return false;
            }
        }

        return true;
    }

    /**
     * Check if nested key exists in array using dot notation.
     */
    protected function hasNestedKey(array $array, string $key): bool
    {
        if (array_key_exists($key, $array)) {
            return true;
        }

        foreach (explode('.', $key) as $segment) {
            if (!is_array($array) || !array_key_exists($segment, $array)) {
                return false;
            }

            $array = $array[$segment];
        }

        return true;
    }
}