some progress

app/Models/HealthCheck.php

@@ -0,0 +1,143 @@
+<?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;
+    }
+}