Refactor ProjectActivity model to use Filter and Formatter interface

app/Filter/ProjectActivityProjectIdFilter.php

@@ -0,0 +1,38 @@
+<?php
+
+namespace Kanboard\Filter;
+
+use Kanboard\Core\Filter\FilterInterface;
+use Kanboard\Model\ProjectActivity;
+
+/**
+ * Filter activity events by projectId
+ *
+ * @package filter
+ * @author  Frederic Guillot
+ */
+class ProjectActivityProjectIdFilter extends BaseFilter implements FilterInterface
+{
+    /**
+     * Get search attribute
+     *
+     * @access public
+     * @return string[]
+     */
+    public function getAttributes()
+    {
+        return array('project_id');
+    }
+
+    /**
+     * Apply filter
+     *
+     * @access public
+     * @return FilterInterface
+     */
+    public function apply()
+    {
+        $this->query->eq(ProjectActivity::TABLE.'.project_id', $this->value);
+        return $this;
+    }
+}

app/Filter/ProjectActivityProjectIdsFilter.php

@@ -0,0 +1,43 @@
+<?php
+
+namespace Kanboard\Filter;
+
+use Kanboard\Core\Filter\FilterInterface;
+use Kanboard\Model\ProjectActivity;
+
+/**
+ * Filter activity events by projectIds
+ *
+ * @package filter
+ * @author  Frederic Guillot
+ */
+class ProjectActivityProjectIdsFilter extends BaseFilter implements FilterInterface
+{
+    /**
+     * Get search attribute
+     *
+     * @access public
+     * @return string[]
+     */
+    public function getAttributes()
+    {
+        return array('project_ids');
+    }
+
+    /**
+     * Apply filter
+     *
+     * @access public
+     * @return FilterInterface
+     */
+    public function apply()
+    {
+        if (empty($this->value)) {
+            $this->query->eq(ProjectActivity::TABLE.'.project_id', 0);
+        } else {
+            $this->query->in(ProjectActivity::TABLE.'.project_id', $this->value);
+        }
+
+        return $this;
+    }
+}

app/Filter/ProjectActivityTaskIdFilter.php

@@ -0,0 +1,38 @@
+<?php
+
+namespace Kanboard\Filter;
+
+use Kanboard\Core\Filter\FilterInterface;
+use Kanboard\Model\ProjectActivity;
+
+/**
+ * Filter activity events by taskId
+ *
+ * @package filter
+ * @author  Frederic Guillot
+ */
+class ProjectActivityTaskIdFilter extends BaseFilter implements FilterInterface
+{
+    /**
+     * Get search attribute
+     *
+     * @access public
+     * @return string[]
+     */
+    public function getAttributes()
+    {
+        return array('task_id');
+    }
+
+    /**
+     * Apply filter
+     *
+     * @access public
+     * @return FilterInterface
+     */
+    public function apply()
+    {
+        $this->query->eq(ProjectActivity::TABLE.'.task_id', $this->value);
+        return $this;
+    }
+}

app/Filter/ProjectActivityTaskTitleFilter.php

@@ -0,0 +1,38 @@
+<?php
+
+namespace Kanboard\Filter;
+
+use Kanboard\Core\Filter\FilterInterface;
+use Kanboard\Model\Task;
+
+/**
+ * Filter activity events by task title
+ *
+ * @package filter
+ * @author  Frederic Guillot
+ */
+class ProjectActivityTaskTitleFilter extends BaseFilter implements FilterInterface
+{
+    /**
+     * Get search attribute
+     *
+     * @access public
+     * @return string[]
+     */
+    public function getAttributes()
+    {
+        return array('title');
+    }
+
+    /**
+     * Apply filter
+     *
+     * @access public
+     * @return FilterInterface
+     */
+    public function apply()
+    {
+        $this->query->ilike(Task::TABLE.'.title', '%'.$this->value.'%');
+        return $this;
+    }
+}