feat(routing): smart routing engine with condition evaluator (device, country, UTM)

app/Domains/Routing/Services/SmartRoutingEngine.php

@@ -0,0 +1,60 @@
+<?php
+
+namespace App\Domains\Routing\Services;
+
+class SmartRoutingEngine
+{
+    public function resolve(array $config, array $context): string
+    {
+        $rules = collect($config['rules'] ?? [])
+            ->sortBy('priority');
+
+        foreach ($rules as $rule) {
+            if ($this->ruleMatches($rule, $context)) {
+                return $rule['target'];
+            }
+        }
+
+        return $config['fallback'];
+    }
+
+    private function ruleMatches(array $rule, array $context): bool
+    {
+        $conditions = $rule['conditions'] ?? [];
+        $matchMode = $rule['match'] ?? 'all';
+
+        if (empty($conditions)) {
+            return false;
+        }
+
+        $results = array_map(
+            fn ($condition) => $this->evaluateCondition($condition, $context),
+            $conditions
+        );
+
+        return $matchMode === 'all'
+            ? ! in_array(false, $results, true)
+            : in_array(true, $results, true);
+    }
+
+    private function evaluateCondition(array $condition, array $context): bool
+    {
+        $field = $condition['field'];
+        $op = $condition['op'];
+        $expected = $condition['value'];
+        $actual = $context[$field] ?? null;
+
+        return match ($op) {
+            'equals' => $actual === $expected,
+            'not_equals' => $actual !== $expected,
+            'in' => in_array($actual, (array) $expected, true),
+            'not_in' => ! in_array($actual, (array) $expected, true),
+            'contains' => str_contains((string) $actual, (string) $expected),
+            'starts_with' => str_starts_with((string) $actual, (string) $expected),
+            'between' => $actual >= $expected[0] && $actual <= $expected[1],
+            'greater_than' => $actual > $expected,
+            'less_than' => $actual < $expected,
+            default => false,
+        };
+    }
+}

tests/Unit/Routing/SmartRoutingEngineTest.php

@@ -0,0 +1,76 @@
+<?php
+
+use App\Domains\Routing\Services\SmartRoutingEngine;
+
+uses(Tests\TestCase::class);
+
+it('returns fallback when no rules match', function () {
+    $engine = new SmartRoutingEngine;
+    $rules = [
+        'rules' => [],
+        'fallback' => 'https://fallback.com',
+    ];
+    $ctx = ['country' => 'US', 'device' => 'desktop'];
+
+    expect($engine->resolve($rules, $ctx))->toBe('https://fallback.com');
+});
+
+it('matches device rule', function () {
+    $engine = new SmartRoutingEngine;
+    $rules = [
+        'rules' => [
+            [
+                'id' => 'r1', 'priority' => 1,
+                'conditions' => [['field' => 'device', 'op' => 'in', 'value' => ['mobile']]],
+                'match' => 'all',
+                'target' => 'https://mobile.com',
+            ],
+        ],
+        'fallback' => 'https://fallback.com',
+    ];
+
+    expect($engine->resolve($rules, ['device' => 'mobile']))->toBe('https://mobile.com');
+    expect($engine->resolve($rules, ['device' => 'desktop']))->toBe('https://fallback.com');
+});
+
+it('matches country IN condition', function () {
+    $engine = new SmartRoutingEngine;
+    $rules = [
+        'rules' => [
+            [
+                'id' => 'r1', 'priority' => 1,
+                'conditions' => [['field' => 'country', 'op' => 'in', 'value' => ['DE', 'AT', 'CH']]],
+                'match' => 'all',
+                'target' => 'https://dach.com',
+            ],
+        ],
+        'fallback' => 'https://fallback.com',
+    ];
+
+    expect($engine->resolve($rules, ['country' => 'DE']))->toBe('https://dach.com');
+    expect($engine->resolve($rules, ['country' => 'US']))->toBe('https://fallback.com');
+});
+
+it('matches ANY condition with mixed fields', function () {
+    $engine = new SmartRoutingEngine;
+    $rules = [
+        'rules' => [
+            [
+                'id' => 'r1', 'priority' => 1,
+                'conditions' => [
+                    ['field' => 'country', 'op' => 'in', 'value' => ['DE']],
+                    ['field' => 'device', 'op' => 'in', 'value' => ['mobile']],
+                ],
+                'match' => 'any',
+                'target' => 'https://any.com',
+            ],
+        ],
+        'fallback' => 'https://fallback.com',
+    ];
+
+    // Either DE or mobile matches
+    expect($engine->resolve($rules, ['country' => 'DE', 'device' => 'desktop']))->toBe('https://any.com');
+    expect($engine->resolve($rules, ['country' => 'US', 'device' => 'mobile']))->toBe('https://any.com');
+    // Neither matches
+    expect($engine->resolve($rules, ['country' => 'US', 'device' => 'desktop']))->toBe('https://fallback.com');
+});