FEATURE: add another repositories

app/CMS/Contracts/Modules/AppHandler.php

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+<?php
+namespace App\CMS\Contracts\Modules;
+
+use App\Http\Requests\Request;
+use App\Models\Content\Content;
+
+interface AppHandler extends BaseModuleHandler
+{
+    /**
+     * Render given module into visitor area.
+     *
+     * @param Content $content    DB model from table contents
+     * @param array   $parameters parameters used for modifications/custom settings of given model
+     *
+     * @return mixed
+     */
+    public function render(Content $content, $parameters);
+
+    public static function getHistoryHandler();
+
+    /**
+     * Getter for section names in creating/editing content resource
+     *
+     * @return mixed
+     */
+    public static function getExtendedFormSections();
+
+    /**
+     * Getter for views used in extended part of form for creating new content
+     *
+     * This method should return pairs <section, view-name>. View is returned only as name in plain text
+     *
+     * @return array of views/templates/html codes divided into section
+     */
+    public static function getExtendedFormInputsCreate();
+
+    /**
+     * Getter for extended part of form for editing existing content
+     *
+     * Basically, this method may be
+     *
+     * @return array of views/templates/html codes divided into section
+     */
+    public static function getExtendedFormInputsEdit();
+
+    /**
+     * Does this module support categories?
+     *
+     * @return boolean
+     */
+    public static function supportCategories();
+}

app/CMS/Contracts/Modules/BaseModuleHandler.php

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+<?php
+namespace App\CMS\Contracts\Modules;
+
+use App\Models\User;
+
+interface BaseModuleHandler
+{
+    /**
+     * Register admin menu (or multiple ones)
+     *
+     * This cannot be in ServiceProvider because Session is started at middleware. And ServiceProvider is called before
+     * starting any middleware..
+     *
+     * @param User $user model of logged user
+     */
+    public static function registerAdminMenu(User $user);
+
+}

app/CMS/Contracts/Modules/InstallableModule.php

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+<?php
+namespace App\CMS\Contracts\Modules;
+
+use App\Models\Module;
+
+interface InstallableModule {
+    /**
+     * Install module.
+     *
+     * This method is called after inserting info about module into database. It can be called only using Artisan in
+     * CLI.
+     */
+    public static function install();
+
+    /**
+     * Uninstalls module
+     *
+     * @param Module $module
+     *
+     * @return mixed
+     */
+    public static function uninstall(Module $module);
+}

app/CMS/Contracts/Modules/TemplateHandler.php

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+<?php
+namespace App\CMS\Contracts\Modules;
+
+use App\Http\Requests\Request;
+use App\Models\Content\Content;
+
+/**
+ * Interface TemplateHandler
+ *
+ * Inerface used for registering template into CMS core.
+ *
+ * @package App\CMS\Handlers\Contracts
+ */
+interface TemplateHandler extends BaseModuleHandler
+{
+    /**
+     * Get list of registered templates and supported modules.
+     *
+     * Returned array is expected to be array of arrays with following items: module, namespace and templateName.
+     * Example:
+     * return [
+     *    ['module' => 'Article', 'templateName' => 'article::template.name']
+     * ];
+     *
+     * When no "namespace" is specified, value strtolower(module) is used instaed.
+     *
+     * @return array
+     */
+    public static function getPublicTemplatePaths();
+
+    /**
+     * Prepare Content object to be rendered using Blade template
+     *
+     * @param Content $content
+     */
+    public static function beforeRender(Content & $content);
+
+    /**
+     * Modify input data into format which can be understood by edit template
+     *
+     * @param Content $content
+     */
+    public static function beforePopulatingEditForm(Content & $content);
+
+    /**
+     * Slightly modify Content object before saving into database.
+     *
+     * This way we can do almost whatever we want - even in template
+     *
+     * @param Content $content
+     * @param Request $request
+     */
+    public static function beforeSave(Content & $content, Request $request);
+}