From bef1b08d0e561dd1b484a4bdf1e63b2ae2499465 Mon Sep 17 00:00:00 2001
From: Aldarien <aldarien85@gmail.com>
Date: Tue, 21 Jan 2020 10:58:21 -0300
Subject: [PATCH] Relaciones

---
 common/Alias/Model.php |  2 +-
 src/RelationNode.php   | 54 ++++++++++++++++++++++++++++++++++++++++++
 src/Relationship.php   | 33 ++++++++++++++++++++++++++
 3 files changed, 88 insertions(+), 1 deletion(-)
 create mode 100644 src/RelationNode.php
 create mode 100644 src/Relationship.php

diff --git a/common/Alias/Model.php b/common/Alias/Model.php
index 574813a..db14079 100644
--- a/common/Alias/Model.php
+++ b/common/Alias/Model.php
@@ -7,7 +7,7 @@ use \Model as BaseModel;
 use Aldarien\Common\Definition\Model as ModelInterface;
 use Aldarien\Common\Factory\Model as ModelFactory;
 
-class Model extends BaseModel implements ModelInterface {
+abstract class Model extends BaseModel implements ModelInterface {
   const CHILD_KEY = 'child_key';
   const PARENT_KEY = 'parent_key';
   const SELF_KEY = 'self_key';
diff --git a/src/RelationNode.php b/src/RelationNode.php
new file mode 100644
index 0000000..293d27f
--- /dev/null
+++ b/src/RelationNode.php
@@ -0,0 +1,54 @@
+<?php
+namespace Aldarien\Models;
+
+use Aldarien\Common\Factory\Model as ModelFactory;
+use Aldarien\Common\Alias\Model;
+
+class RelationNode {
+  protected $source;
+  protected $destination;
+  protected $join;
+  protected $relation;
+
+  public function __construct() {
+    $this->join = 'join';
+    $this->relation = '=';
+  }
+  public function setSource(string $class_name, string $key): RelationNode {
+    return $this->set('source', $class_name, $key);
+  }
+  public function setDestination(string $class_name, string $key): RelationNode {
+    return $this->set('destination', $class_name, $key);
+  }
+  public function setJoin(string $join): RelationNode {
+    $valid = ['join', 'inner join', 'outer join', 'left join', 'left outer join', 'right join', 'right outer join'];
+    if (\array_search(strtolower($join), $valid) !== false) {
+      $this->join = strtolower($join);
+    }
+    return $this;
+  }
+  public function setRelation(string $relation): RelationNode {
+    $valid = ['=', '<=', '<', '>=', '>', 'like'];
+    if (\array_search(strtolower($relation), $valid) !== false) {
+      $this->relation = $relation;
+    }
+    return $this;
+  }
+
+  protected function set(string $type, string $class_name, string $key): RelationNode {
+    $this->$type = (object) [
+      'class' => $class_name,
+      'table' => Model::getTable($class_name),
+      'key' => $key
+    ];
+    return $this;
+  }
+
+  public function build(ModelFactory $factory): ModelFactory {
+    $source = implode('.', [$this->source->table, $this->source->key]);
+    $destination = implode('.', [$this->destination->table, $this->destination->key]);
+    $method = str_replace([' '], ['_'], strtolower($this->join));
+    $output = $factory->{$method}([$this->destination->table, [$destination, $source, $this->relation]]);
+    return $output;
+  }
+}
diff --git a/src/Relationship.php b/src/Relationship.php
new file mode 100644
index 0000000..707025c
--- /dev/null
+++ b/src/Relationship.php
@@ -0,0 +1,33 @@
+<?php
+namespace Aldarien\Models;
+
+use Aldarien\Common\Factory\Model as ModelFactory;
+use Aldarien\Common\Alias\Model;
+
+class Relationship {
+  protected $start;
+  protected $nodes;
+
+  public function __construct(string $class_name) {
+    $this->setStart($class_name);
+  }
+  public function setStart(string $class_name) {
+    $this->start = (object) [
+      'class' => $class_name,
+      'table' => Model::getTable($class_name)
+    ];
+  }
+  public function addNode(RelationNode $node) {
+    if ($this->nodes === null) {
+      $this->nodes = [];
+    }
+    $this->nodes []= $node;
+  }
+  public function build(ModelFactory $factory): ModelFactory {
+    $output = $factory->find($this->start->class);
+    foreach ($this->nodes as $node) {
+      $output = $node->build($factory);
+    }
+    return $output;
+  }
+}