add when function to add where clause based on condition

devmoath · Sep 16, 2021 · c62c841 · c62c841
1 parent 6c99a77
commit c62c841
Show file tree

Hide file tree

Showing 3 changed files with 56 additions and 3 deletions.
diff --git a/README.md b/README.md
@@ -13,9 +13,27 @@ composer require devmoath/jql-builder
 ```php
 use DevMoath\JqlBuilder\Jql;
 
-$example = (string) Jql::query()->whereProject('MY PROJECT'); // => "project = 'MY PROJECT'"
+$example = (string) Jql::query()->whereProject('MY PROJECT');
 
-$example = (string) Jql::query()->whereProject('MY PROJECT')->whereStatus(['wip', 'created']); // => "project = 'MY PROJECT' AND status in ('wip', 'created')"
+echo $example; // "project = 'MY PROJECT'"
+
+$example = (string) Jql::query()->whereProject('MY PROJECT')->whereStatus(['wip', 'created']);
+
+echo $example; // "project = 'MY PROJECT' AND status in ('wip', 'created')"
+
+$example = (string) Jql::query()->when('MY PROJECT', function (Jql $builder, $value) {
+    return $builder->whereProject($value);
+});
+
+echo $example; // "project = 'MY PROJECT'"
+
+$testcase2 = (string) Jql::query()->when('', function (Jql $builder, $value) {
+    return $builder->whereProject($value);
+});
+
+echo $example; // ""
+
+// more examples in the way.
 ```
 
 ## Testing

diff --git a/src/Jql.php b/src/Jql.php
@@ -100,6 +100,24 @@ public function whereStatus(array|string $value, string $operator = self::IN): s
         return $this;
     }
 
+    public function when(mixed $value, callable $callback): self
+    {
+        if ($value) {
+            return $callback($this, $value);
+        }
+
+        return $this;
+    }
+
+    public function whenNot(mixed $value, callable $callback): self
+    {
+        if (! $value) {
+            return $callback($this, $value);
+        }
+
+        return $this;
+    }
+
     public function __toString(): string
     {
         return trim(

diff --git a/tests/JqlTest.php b/tests/JqlTest.php
@@ -8,12 +8,29 @@
 class JqlTest extends TestCase
 {
     /** @test */
-    public function it_can_generate_jql(): void
+    public function it_can_generate_simple_jql(): void
     {
         $testcase = (string) Jql::query()->whereProject('MY PROJECT');
         $testcase2 = (string) Jql::query()->whereProject('MY PROJECT')->whereStatus(['wip', 'created']);
 
         $this->assertSame("project = 'MY PROJECT'", $testcase);
         $this->assertSame("project = 'MY PROJECT' AND status in ('wip', 'created')", $testcase2);
     }
+
+    /** @test */
+    public function it_can_generate_simple_jql_using_condition(): void
+    {
+        $projectName = 'MY PROJECT';
+        $emptyProjectName = '';
+
+        $testcase = (string) Jql::query()->when($projectName, function (Jql $builder, $value) {
+            return $builder->whereProject($value);
+        });
+        $testcase2 = (string) Jql::query()->when($emptyProjectName, function (Jql $builder, $value) {
+            return $builder->whereProject($value);
+        });
+
+        $this->assertSame("project = 'MY PROJECT'", $testcase);
+        $this->assertSame("", $testcase2);
+    }
 }