From 937b70bdf860f893e855f42734db6119624cf941 Mon Sep 17 00:00:00 2001
From: Toby Zerner <toby.zerner@gmail.com>
Date: Tue, 22 Sep 2015 18:14:56 +0930
Subject: [PATCH] Initial commit

---
 extensions/approval/.editorconfig             |  19 ++
 extensions/approval/.eslintignore             |   5 +
 extensions/approval/.eslintrc                 | 175 ++++++++++++++++++
 extensions/approval/.gitignore                |   4 +
 extensions/approval/bootstrap.php             |   5 +
 extensions/approval/build.sh                  |  65 +++++++
 extensions/approval/composer.json             |   7 +
 extensions/approval/flarum.json               |  22 +++
 extensions/approval/js/.gitignore             |   3 +
 extensions/approval/js/admin/Gulpfile.js      |   7 +
 extensions/approval/js/admin/package.json     |   7 +
 extensions/approval/js/admin/src/main.js      |  21 +++
 extensions/approval/js/forum/Gulpfile.js      |   7 +
 extensions/approval/js/forum/package.json     |   7 +
 extensions/approval/js/forum/src/main.js      |  56 ++++++
 extensions/approval/less/admin/extension.less |   0
 extensions/approval/less/forum/extension.less |   7 +
 extensions/approval/locale/en.yml             |   2 +
 ..._011527_add_is_approved_to_discussions.php |  33 ++++
 ..._09_21_011706_add_is_approved_to_posts.php |  33 ++++
 .../approval/src/Events/PostWasApproved.php   |  31 ++++
 extensions/approval/src/Extension.php         |  16 ++
 .../src/Listeners/AddApiAttributes.php        |  26 +++
 .../src/Listeners/AddClientAssets.php         |  44 +++++
 .../approval/src/Listeners/ApproveContent.php |  47 +++++
 .../src/Listeners/HideUnapprovedContent.php   |  44 +++++
 .../src/Listeners/UnapproveNewContent.php     |  47 +++++
 27 files changed, 740 insertions(+)
 create mode 100644 extensions/approval/.editorconfig
 create mode 100644 extensions/approval/.eslintignore
 create mode 100644 extensions/approval/.eslintrc
 create mode 100644 extensions/approval/.gitignore
 create mode 100644 extensions/approval/bootstrap.php
 create mode 100644 extensions/approval/build.sh
 create mode 100644 extensions/approval/composer.json
 create mode 100644 extensions/approval/flarum.json
 create mode 100644 extensions/approval/js/.gitignore
 create mode 100644 extensions/approval/js/admin/Gulpfile.js
 create mode 100644 extensions/approval/js/admin/package.json
 create mode 100644 extensions/approval/js/admin/src/main.js
 create mode 100644 extensions/approval/js/forum/Gulpfile.js
 create mode 100644 extensions/approval/js/forum/package.json
 create mode 100644 extensions/approval/js/forum/src/main.js
 create mode 100644 extensions/approval/less/admin/extension.less
 create mode 100644 extensions/approval/less/forum/extension.less
 create mode 100644 extensions/approval/locale/en.yml
 create mode 100644 extensions/approval/migrations/2015_09_21_011527_add_is_approved_to_discussions.php
 create mode 100644 extensions/approval/migrations/2015_09_21_011706_add_is_approved_to_posts.php
 create mode 100644 extensions/approval/src/Events/PostWasApproved.php
 create mode 100644 extensions/approval/src/Extension.php
 create mode 100644 extensions/approval/src/Listeners/AddApiAttributes.php
 create mode 100644 extensions/approval/src/Listeners/AddClientAssets.php
 create mode 100644 extensions/approval/src/Listeners/ApproveContent.php
 create mode 100644 extensions/approval/src/Listeners/HideUnapprovedContent.php
 create mode 100644 extensions/approval/src/Listeners/UnapproveNewContent.php

diff --git a/extensions/approval/.editorconfig b/extensions/approval/.editorconfig
new file mode 100644
index 000000000..87694ddab
--- /dev/null
+++ b/extensions/approval/.editorconfig
@@ -0,0 +1,19 @@
+# EditorConfig helps developers define and maintain consistent
+# coding styles between different editors and IDEs
+# editorconfig.org
+
+root = true
+
+[*]
+end_of_line = lf
+charset = utf-8
+trim_trailing_whitespace = true
+insert_final_newline = true
+indent_style = space
+indent_size = 2
+
+[*.{diff,md}]
+trim_trailing_whitespace = false
+
+[*.php]
+indent_size = 4
diff --git a/extensions/approval/.eslintignore b/extensions/approval/.eslintignore
new file mode 100644
index 000000000..86b7c8854
--- /dev/null
+++ b/extensions/approval/.eslintignore
@@ -0,0 +1,5 @@
+**/bower_components/**/*
+**/node_modules/**/*
+vendor/**/*
+**/Gulpfile.js
+**/dist/**/*
diff --git a/extensions/approval/.eslintrc b/extensions/approval/.eslintrc
new file mode 100644
index 000000000..9e89e6ba6
--- /dev/null
+++ b/extensions/approval/.eslintrc
@@ -0,0 +1,175 @@
+{
+  "parser": "babel-eslint",          // https://github.com/babel/babel-eslint
+  "env": {                           // http://eslint.org/docs/user-guide/configuring.html#specifying-environments
+    "browser": true                  // browser global variables
+  },
+  "ecmaFeatures": {
+    "arrowFunctions": true,
+    "blockBindings": true,
+    "classes": true,
+    "defaultParams": true,
+    "destructuring": true,
+    "forOf": true,
+    "generators": false,
+    "modules": true,
+    "objectLiteralComputedProperties": true,
+    "objectLiteralDuplicateProperties": false,
+    "objectLiteralShorthandMethods": true,
+    "objectLiteralShorthandProperties": true,
+    "spread": true,
+    "superInFunctions": true,
+    "templateStrings": true,
+    "jsx": true
+  },
+  "globals": {
+    "m": true,
+    "app": true,
+    "$": true,
+    "moment": true
+  },
+  "plugins": [
+    "react"
+  ],
+  "rules": {
+    "react/jsx-uses-vars": 1,
+
+/**
+ * Strict mode
+ */
+    // babel inserts "use strict"; for us
+    "strict": [2, "never"],          // http://eslint.org/docs/rules/strict
+
+/**
+ * ES6
+ */
+    "no-var": 2,                     // http://eslint.org/docs/rules/no-var
+    "prefer-const": 2,               // http://eslint.org/docs/rules/prefer-const
+
+/**
+ * Variables
+ */
+    "no-shadow": 2,                  // http://eslint.org/docs/rules/no-shadow
+    "no-shadow-restricted-names": 2, // http://eslint.org/docs/rules/no-shadow-restricted-names
+    "no-unused-vars": [2, {          // http://eslint.org/docs/rules/no-unused-vars
+      "vars": "local",
+      "args": "after-used"
+    }],
+    "no-use-before-define": 2,       // http://eslint.org/docs/rules/no-use-before-define
+
+/**
+ * Possible errors
+ */
+    "comma-dangle": [2, "never"],    // http://eslint.org/docs/rules/comma-dangle
+    "no-cond-assign": [2, "always"], // http://eslint.org/docs/rules/no-cond-assign
+    "no-console": 1,                 // http://eslint.org/docs/rules/no-console
+    "no-debugger": 1,                // http://eslint.org/docs/rules/no-debugger
+    "no-alert": 1,                   // http://eslint.org/docs/rules/no-alert
+    "no-constant-condition": 1,      // http://eslint.org/docs/rules/no-constant-condition
+    "no-dupe-keys": 2,               // http://eslint.org/docs/rules/no-dupe-keys
+    "no-duplicate-case": 2,          // http://eslint.org/docs/rules/no-duplicate-case
+    "no-empty": 2,                   // http://eslint.org/docs/rules/no-empty
+    "no-ex-assign": 2,               // http://eslint.org/docs/rules/no-ex-assign
+    "no-extra-boolean-cast": 0,      // http://eslint.org/docs/rules/no-extra-boolean-cast
+    "no-extra-semi": 2,              // http://eslint.org/docs/rules/no-extra-semi
+    "no-func-assign": 2,             // http://eslint.org/docs/rules/no-func-assign
+    "no-inner-declarations": 2,      // http://eslint.org/docs/rules/no-inner-declarations
+    "no-invalid-regexp": 2,          // http://eslint.org/docs/rules/no-invalid-regexp
+    "no-irregular-whitespace": 2,    // http://eslint.org/docs/rules/no-irregular-whitespace
+    "no-obj-calls": 2,               // http://eslint.org/docs/rules/no-obj-calls
+    "no-reserved-keys": 2,           // http://eslint.org/docs/rules/no-reserved-keys
+    "no-sparse-arrays": 2,           // http://eslint.org/docs/rules/no-sparse-arrays
+    "no-unreachable": 2,             // http://eslint.org/docs/rules/no-unreachable
+    "use-isnan": 2,                  // http://eslint.org/docs/rules/use-isnan
+    "block-scoped-var": 2,           // http://eslint.org/docs/rules/block-scoped-var
+
+/**
+ * Best practices
+ */
+    "consistent-return": 2,          // http://eslint.org/docs/rules/consistent-return
+    "curly": [2, "multi-line"],      // http://eslint.org/docs/rules/curly
+    "default-case": 2,               // http://eslint.org/docs/rules/default-case
+    "dot-notation": [2, {            // http://eslint.org/docs/rules/dot-notation
+      "allowKeywords": true
+    }],
+    "eqeqeq": 2,                     // http://eslint.org/docs/rules/eqeqeq
+    "no-caller": 2,                  // http://eslint.org/docs/rules/no-caller
+    "no-else-return": 2,             // http://eslint.org/docs/rules/no-else-return
+    "no-eq-null": 2,                 // http://eslint.org/docs/rules/no-eq-null
+    "no-eval": 2,                    // http://eslint.org/docs/rules/no-eval
+    "no-extend-native": 2,           // http://eslint.org/docs/rules/no-extend-native
+    "no-extra-bind": 2,              // http://eslint.org/docs/rules/no-extra-bind
+    "no-fallthrough": 2,             // http://eslint.org/docs/rules/no-fallthrough
+    "no-floating-decimal": 2,        // http://eslint.org/docs/rules/no-floating-decimal
+    "no-implied-eval": 2,            // http://eslint.org/docs/rules/no-implied-eval
+    "no-lone-blocks": 2,             // http://eslint.org/docs/rules/no-lone-blocks
+    "no-loop-func": 2,               // http://eslint.org/docs/rules/no-loop-func
+    "no-multi-str": 2,               // http://eslint.org/docs/rules/no-multi-str
+    "no-native-reassign": 2,         // http://eslint.org/docs/rules/no-native-reassign
+    "no-new": 2,                     // http://eslint.org/docs/rules/no-new
+    "no-new-func": 2,                // http://eslint.org/docs/rules/no-new-func
+    "no-new-wrappers": 2,            // http://eslint.org/docs/rules/no-new-wrappers
+    "no-octal": 2,                   // http://eslint.org/docs/rules/no-octal
+    "no-octal-escape": 2,            // http://eslint.org/docs/rules/no-octal-escape
+    "no-param-reassign": 2,          // http://eslint.org/docs/rules/no-param-reassign
+    "no-proto": 2,                   // http://eslint.org/docs/rules/no-proto
+    "no-redeclare": 2,               // http://eslint.org/docs/rules/no-redeclare
+    "no-return-assign": 2,           // http://eslint.org/docs/rules/no-return-assign
+    "no-self-compare": 2,            // http://eslint.org/docs/rules/no-self-compare
+    "no-sequences": 2,               // http://eslint.org/docs/rules/no-sequences
+    "no-throw-literal": 2,           // http://eslint.org/docs/rules/no-throw-literal
+    "no-with": 2,                    // http://eslint.org/docs/rules/no-with
+    "radix": 2,                      // http://eslint.org/docs/rules/radix
+    "vars-on-top": 2,                // http://eslint.org/docs/rules/vars-on-top
+    "wrap-iife": [2, "any"],         // http://eslint.org/docs/rules/wrap-iife
+    "yoda": 2,                       // http://eslint.org/docs/rules/yoda
+
+/**
+ * Style
+ */
+    "indent": [2, 2],                // http://eslint.org/docs/rules/indent
+    "brace-style": [2,               // http://eslint.org/docs/rules/brace-style
+      "1tbs", {
+      "allowSingleLine": true
+    }],
+    "quotes": [
+      2, "single", "avoid-escape"    // http://eslint.org/docs/rules/quotes
+    ],
+    "camelcase": [2, {               // http://eslint.org/docs/rules/camelcase
+      "properties": "never"
+    }],
+    "comma-spacing": [2, {           // http://eslint.org/docs/rules/comma-spacing
+      "before": false,
+      "after": true
+    }],
+    "comma-style": [2, "last"],      // http://eslint.org/docs/rules/comma-style
+    "eol-last": 2,                   // http://eslint.org/docs/rules/eol-last
+    "key-spacing": [2, {             // http://eslint.org/docs/rules/key-spacing
+        "beforeColon": false,
+        "afterColon": true
+    }],
+    "new-cap": [2, {                 // http://eslint.org/docs/rules/new-cap
+      "newIsCap": true
+    }],
+    "no-multiple-empty-lines": [2, { // http://eslint.org/docs/rules/no-multiple-empty-lines
+      "max": 2
+    }],
+    "no-new-object": 2,              // http://eslint.org/docs/rules/no-new-object
+    "no-spaced-func": 2,             // http://eslint.org/docs/rules/no-spaced-func
+    "no-trailing-spaces": 2,         // http://eslint.org/docs/rules/no-trailing-spaces
+    "no-wrap-func": 2,               // http://eslint.org/docs/rules/no-wrap-func
+    "no-underscore-dangle": 0,       // http://eslint.org/docs/rules/no-underscore-dangle
+    "one-var": [2, "never"],         // http://eslint.org/docs/rules/one-var
+    "padded-blocks": [2, "never"],   // http://eslint.org/docs/rules/padded-blocks
+    "semi": [2, "always"],           // http://eslint.org/docs/rules/semi
+    "semi-spacing": [2, {            // http://eslint.org/docs/rules/semi-spacing
+      "before": false,
+      "after": true
+    }],
+    "space-after-keywords": 2,       // http://eslint.org/docs/rules/space-after-keywords
+    "space-before-blocks": 2,        // http://eslint.org/docs/rules/space-before-blocks
+    "space-before-function-paren": [2, "never"], // http://eslint.org/docs/rules/space-before-function-paren
+    "space-infix-ops": 2,            // http://eslint.org/docs/rules/space-infix-ops
+    "space-return-throw-case": 2,    // http://eslint.org/docs/rules/space-return-throw-case
+    "spaced-line-comment": 2,        // http://eslint.org/docs/rules/spaced-line-comment
+  }
+}
diff --git a/extensions/approval/.gitignore b/extensions/approval/.gitignore
new file mode 100644
index 000000000..a4f3b125e
--- /dev/null
+++ b/extensions/approval/.gitignore
@@ -0,0 +1,4 @@
+/vendor
+composer.phar
+.DS_Store
+Thumbs.db
diff --git a/extensions/approval/bootstrap.php b/extensions/approval/bootstrap.php
new file mode 100644
index 000000000..6c3da11ab
--- /dev/null
+++ b/extensions/approval/bootstrap.php
@@ -0,0 +1,5 @@
+<?php
+
+require __DIR__.'/vendor/autoload.php';
+
+return 'Flarum\Approval\Extension';
diff --git a/extensions/approval/build.sh b/extensions/approval/build.sh
new file mode 100644
index 000000000..4008b5c46
--- /dev/null
+++ b/extensions/approval/build.sh
@@ -0,0 +1,65 @@
+#!/usr/bin/env bash
+
+base=${PWD}
+
+if [ ! -f flarum.json ]; then
+echo "Could not find flarum.json file!"
+exit 1
+fi
+
+
+extension=$(php <<CODE
+<?php
+\$flarum = json_decode(file_get_contents('flarum.json'), true);
+echo array_key_exists('name', \$flarum) ? \$flarum['name'] : '';
+CODE
+)
+
+release=/tmp/${extension}
+
+rm -rf ${release}
+mkdir ${release}
+
+git archive --format zip --worktree-attributes HEAD > ${release}/release.zip
+
+cd ${release}
+unzip release.zip -d ./
+rm release.zip
+
+# Delete files
+rm -rf ${release}/build.sh
+
+# Install all Composer dependencies
+composer install --prefer-dist --optimize-autoloader --ignore-platform-reqs --no-dev
+
+cd "${release}/js"
+if [ -f bower.json ]; then
+bower install
+fi
+
+for app in forum admin; do
+    cd "${release}/js"
+
+    if [ -d $app ]; then
+      cd $app
+
+      if [ -f bower.json ]; then
+        bower install
+      fi
+
+      npm install
+      gulp --production
+      rm -rf node_modules bower_components
+    fi
+done
+
+rm -rf "${release}/extensions/${extension}/js/bower_components"
+wait
+
+# Finally, create the release archive
+cd ${release}
+find . -type d -exec chmod 0750 {} +
+find . -type f -exec chmod 0644 {} +
+chmod 0775 .
+zip -r ${extension}.zip ./
+mv ${extension}.zip ${base}/${extension}.zip
diff --git a/extensions/approval/composer.json b/extensions/approval/composer.json
new file mode 100644
index 000000000..c663295f7
--- /dev/null
+++ b/extensions/approval/composer.json
@@ -0,0 +1,7 @@
+{
+    "autoload": {
+        "psr-4": {
+            "Flarum\\Approval\\": "src/"
+        }
+    }
+}
diff --git a/extensions/approval/flarum.json b/extensions/approval/flarum.json
new file mode 100644
index 000000000..8bde180d1
--- /dev/null
+++ b/extensions/approval/flarum.json
@@ -0,0 +1,22 @@
+{
+    "name": "approval",
+    "title": "Approval",
+    "description": "Make discussions and posts require moderator approval.",
+    "keywords": [],
+    "version": "0.1.0-beta.2",
+    "author": {
+        "name": "Toby Zerner",
+        "email": "toby@flarum.org",
+        "homepage": "http://tobyzerner.com"
+    },
+    "license": "MIT",
+    "require": {
+        "flarum": ">=0.1.0-beta.2",
+        "reports": ">=0.1.0-beta.2"
+    },
+    "icon": {
+        "name": "check",
+        "backgroundColor": "green",
+        "color": "#fff"
+    }
+}
diff --git a/extensions/approval/js/.gitignore b/extensions/approval/js/.gitignore
new file mode 100644
index 000000000..372e20a51
--- /dev/null
+++ b/extensions/approval/js/.gitignore
@@ -0,0 +1,3 @@
+bower_components
+node_modules
+dist
diff --git a/extensions/approval/js/admin/Gulpfile.js b/extensions/approval/js/admin/Gulpfile.js
new file mode 100644
index 000000000..2b986bd70
--- /dev/null
+++ b/extensions/approval/js/admin/Gulpfile.js
@@ -0,0 +1,7 @@
+var gulp = require('flarum-gulp');
+
+gulp({
+  modules: {
+    'approval': 'src/**/*.js'
+  }
+});
diff --git a/extensions/approval/js/admin/package.json b/extensions/approval/js/admin/package.json
new file mode 100644
index 000000000..62ea6c691
--- /dev/null
+++ b/extensions/approval/js/admin/package.json
@@ -0,0 +1,7 @@
+{
+  "private": true,
+  "devDependencies": {
+    "gulp": "^3.8.11",
+    "flarum-gulp": "^0.1.0"
+  }
+}
diff --git a/extensions/approval/js/admin/src/main.js b/extensions/approval/js/admin/src/main.js
new file mode 100644
index 000000000..8b3ff7863
--- /dev/null
+++ b/extensions/approval/js/admin/src/main.js
@@ -0,0 +1,21 @@
+import { extend } from 'flarum/extend';
+import app from 'flarum/app';
+import PermissionGrid from 'flarum/components/PermissionGrid';
+
+app.initializers.add('approval', () => {
+  extend(PermissionGrid.prototype, 'replyItems', items => {
+    items.add('replyWithoutApproval', {
+      icon: 'check',
+      label: 'Reply without approval',
+      permission: 'discussion.replyWithoutApproval'
+    }, 95);
+  });
+
+  extend(PermissionGrid.prototype, 'moderateItems', items => {
+    items.add('approvePosts', {
+      icon: 'check',
+      label: 'Approve posts',
+      permission: 'discussion.approvePosts'
+    }, 65);
+  });
+});
diff --git a/extensions/approval/js/forum/Gulpfile.js b/extensions/approval/js/forum/Gulpfile.js
new file mode 100644
index 000000000..2b986bd70
--- /dev/null
+++ b/extensions/approval/js/forum/Gulpfile.js
@@ -0,0 +1,7 @@
+var gulp = require('flarum-gulp');
+
+gulp({
+  modules: {
+    'approval': 'src/**/*.js'
+  }
+});
diff --git a/extensions/approval/js/forum/package.json b/extensions/approval/js/forum/package.json
new file mode 100644
index 000000000..62ea6c691
--- /dev/null
+++ b/extensions/approval/js/forum/package.json
@@ -0,0 +1,7 @@
+{
+  "private": true,
+  "devDependencies": {
+    "gulp": "^3.8.11",
+    "flarum-gulp": "^0.1.0"
+  }
+}
diff --git a/extensions/approval/js/forum/src/main.js b/extensions/approval/js/forum/src/main.js
new file mode 100644
index 000000000..23cb23551
--- /dev/null
+++ b/extensions/approval/js/forum/src/main.js
@@ -0,0 +1,56 @@
+import { extend, override } from 'flarum/extend';
+import app from 'flarum/app';
+import Discussion from 'flarum/models/Discussion';
+import Post from 'flarum/models/Post';
+import DiscussionListItem from 'flarum/components/DiscussionListItem';
+import CommentPost from 'flarum/components/CommentPost';
+import Button from 'flarum/components/Button';
+import PostControls from 'flarum/utils/PostControls';
+
+app.initializers.add('approval', () => {
+  Discussion.prototype.isApproved = Discussion.attribute('isApproved');
+
+  Post.prototype.isApproved = Post.attribute('isApproved');
+  Post.prototype.canApprove = Post.attribute('canApprove');
+
+  extend(DiscussionListItem.prototype, 'attrs', function(attrs) {
+    if (!this.props.discussion.isApproved()) {
+      attrs.className += ' DiscussionListItem--unapproved';
+    }
+  });
+
+  extend(CommentPost.prototype, 'attrs', function(attrs) {
+    if (!this.props.post.isApproved() && !this.props.post.isHidden()) {
+      attrs.className += ' CommentPost--unapproved';
+    }
+  });
+
+  extend(CommentPost.prototype, 'headerItems', function(items) {
+    if (!this.props.post.isApproved() && !this.props.post.isHidden()) {
+      items.add('unapproved', 'Awaiting Approval');
+    }
+  });
+
+  override(CommentPost.prototype, 'flagReason', function(original, flag) {
+    if (flag.type() === 'approval') {
+      return 'Awaiting approval';
+    }
+
+    return original(flag);
+  });
+
+  extend(PostControls, 'destructiveControls', function(items, post) {
+    if (!post.isApproved() && post.canApprove()) {
+      items.add('approve',
+        <Button icon="check" onclick={PostControls.approveAction.bind(post)}>
+          Approve
+        </Button>,
+        10
+      );
+    }
+  });
+
+  PostControls.approveAction = function() {
+    this.save({isApproved: true});
+  };
+}, -10); // set initializer priority to run after reports
diff --git a/extensions/approval/less/admin/extension.less b/extensions/approval/less/admin/extension.less
new file mode 100644
index 000000000..e69de29bb
diff --git a/extensions/approval/less/forum/extension.less b/extensions/approval/less/forum/extension.less
new file mode 100644
index 000000000..7e4d43e7d
--- /dev/null
+++ b/extensions/approval/less/forum/extension.less
@@ -0,0 +1,7 @@
+.CommentPost--unapproved {
+  .Post-header,
+  .Post-body,
+  .Post-footer {
+    opacity: 0.5;
+  }
+}
diff --git a/extensions/approval/locale/en.yml b/extensions/approval/locale/en.yml
new file mode 100644
index 000000000..f9584dd98
--- /dev/null
+++ b/extensions/approval/locale/en.yml
@@ -0,0 +1,2 @@
+approval:
+  # hello_world: "Hello, world!"
diff --git a/extensions/approval/migrations/2015_09_21_011527_add_is_approved_to_discussions.php b/extensions/approval/migrations/2015_09_21_011527_add_is_approved_to_discussions.php
new file mode 100644
index 000000000..9ad21fdf2
--- /dev/null
+++ b/extensions/approval/migrations/2015_09_21_011527_add_is_approved_to_discussions.php
@@ -0,0 +1,33 @@
+<?php
+
+namespace Flarum\Migrations\Approval;
+
+use Illuminate\Database\Schema\Blueprint;
+use Flarum\Migrations\Migration;
+
+class AddIsApprovedToDiscussions extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        $this->schema->table('discussions', function (Blueprint $table) {
+            $table->boolean('is_approved')->default(1);
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        $this->schema->table('discussions', function (Blueprint $table) {
+            $table->dropColumn('is_approved');
+        });
+    }
+}
diff --git a/extensions/approval/migrations/2015_09_21_011706_add_is_approved_to_posts.php b/extensions/approval/migrations/2015_09_21_011706_add_is_approved_to_posts.php
new file mode 100644
index 000000000..cf44672eb
--- /dev/null
+++ b/extensions/approval/migrations/2015_09_21_011706_add_is_approved_to_posts.php
@@ -0,0 +1,33 @@
+<?php
+
+namespace Flarum\Migrations\Approval;
+
+use Illuminate\Database\Schema\Blueprint;
+use Flarum\Migrations\Migration;
+
+class AddIsApprovedToPosts extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        $this->schema->table('posts', function (Blueprint $table) {
+            $table->boolean('is_approved')->default(1);
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        $this->schema->table('posts', function (Blueprint $table) {
+            $table->dropColumn('is_approved');
+        });
+    }
+}
diff --git a/extensions/approval/src/Events/PostWasApproved.php b/extensions/approval/src/Events/PostWasApproved.php
new file mode 100644
index 000000000..165d716a6
--- /dev/null
+++ b/extensions/approval/src/Events/PostWasApproved.php
@@ -0,0 +1,31 @@
+<?php
+/*
+ * This file is part of Flarum.
+ *
+ * (c) Toby Zerner <toby.zerner@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Flarum\Approval\Events;
+
+use Flarum\Core\Posts\Post;
+
+class PostWasApproved
+{
+    /**
+     * The post that was approved.
+     *
+     * @var Post
+     */
+    public $post;
+
+    /**
+     * @param Post $post
+     */
+    public function __construct(Post $post)
+    {
+        $this->post = $post;
+    }
+}
diff --git a/extensions/approval/src/Extension.php b/extensions/approval/src/Extension.php
new file mode 100644
index 000000000..abb61f68b
--- /dev/null
+++ b/extensions/approval/src/Extension.php
@@ -0,0 +1,16 @@
+<?php namespace Flarum\Approval;
+
+use Flarum\Support\Extension as BaseExtension;
+use Illuminate\Events\Dispatcher;
+
+class Extension extends BaseExtension
+{
+    public function listen(Dispatcher $events)
+    {
+        $events->subscribe('Flarum\Approval\Listeners\AddClientAssets');
+        $events->subscribe('Flarum\Approval\Listeners\AddApiAttributes');
+        $events->subscribe('Flarum\Approval\Listeners\HideUnapprovedContent');
+        $events->subscribe('Flarum\Approval\Listeners\UnapproveNewContent');
+        $events->subscribe('Flarum\Approval\Listeners\ApproveContent');
+    }
+}
diff --git a/extensions/approval/src/Listeners/AddApiAttributes.php b/extensions/approval/src/Listeners/AddApiAttributes.php
new file mode 100644
index 000000000..684af8c07
--- /dev/null
+++ b/extensions/approval/src/Listeners/AddApiAttributes.php
@@ -0,0 +1,26 @@
+<?php namespace Flarum\Approval\Listeners;
+
+use Flarum\Events\ApiAttributes;
+use Flarum\Api\Serializers\DiscussionSerializer;
+use Flarum\Api\Serializers\PostSerializer;
+use Illuminate\Contracts\Events\Dispatcher;
+
+class AddApiAttributes
+{
+    public function subscribe(Dispatcher $events)
+    {
+        $events->listen(ApiAttributes::class, [$this, 'addApiAttributes']);
+    }
+
+    public function addApiAttributes(ApiAttributes $event)
+    {
+        if ($event->serializer instanceof DiscussionSerializer ||
+            $event->serializer instanceof PostSerializer) {
+            $event->attributes['isApproved'] = (bool) $event->model->is_approved;
+        }
+
+        if ($event->serializer instanceof PostSerializer) {
+            $event->attributes['canApprove'] = (bool) $event->model->discussion->can($event->actor, 'approvePosts');
+        }
+    }
+}
diff --git a/extensions/approval/src/Listeners/AddClientAssets.php b/extensions/approval/src/Listeners/AddClientAssets.php
new file mode 100644
index 000000000..18bae640b
--- /dev/null
+++ b/extensions/approval/src/Listeners/AddClientAssets.php
@@ -0,0 +1,44 @@
+<?php namespace Flarum\Approval\Listeners;
+
+use Flarum\Events\RegisterLocales;
+use Flarum\Events\BuildClientView;
+use Illuminate\Contracts\Events\Dispatcher;
+
+class AddClientAssets
+{
+    public function subscribe(Dispatcher $events)
+    {
+        $events->listen(RegisterLocales::class, [$this, 'addLocale']);
+        $events->listen(BuildClientView::class, [$this, 'addAssets']);
+    }
+
+    public function addLocale(RegisterLocales $event)
+    {
+        $event->addTranslations('en', __DIR__.'/../../locale/en.yml');
+    }
+
+    public function addAssets(BuildClientView $event)
+    {
+        $event->forumAssets([
+            __DIR__.'/../../js/forum/dist/extension.js',
+            __DIR__.'/../../less/forum/extension.less'
+        ]);
+
+        $event->forumBootstrapper('approval/main');
+
+        $event->forumTranslations([
+            // 'approval.hello_world'
+        ]);
+
+        $event->adminAssets([
+            __DIR__.'/../../js/admin/dist/extension.js',
+            __DIR__.'/../../less/admin/extension.less'
+        ]);
+
+        $event->adminBootstrapper('approval/main');
+
+        $event->adminTranslations([
+            // 'approval.hello_world'
+        ]);
+    }
+}
diff --git a/extensions/approval/src/Listeners/ApproveContent.php b/extensions/approval/src/Listeners/ApproveContent.php
new file mode 100644
index 000000000..a3cca9637
--- /dev/null
+++ b/extensions/approval/src/Listeners/ApproveContent.php
@@ -0,0 +1,47 @@
+<?php namespace Flarum\Approval\Listeners;
+
+use Flarum\Events\PostWillBeSaved;
+use Flarum\Approval\Events\PostWasApproved;
+use Illuminate\Contracts\Events\Dispatcher;
+
+class ApproveContent
+{
+    public function subscribe(Dispatcher $events)
+    {
+        $events->listen(PostWillBeSaved::class, [$this, 'approvePost']);
+        $events->listen(PostWasApproved::class, [$this, 'approveDiscussion']);
+    }
+
+    public function approvePost(PostWillBeSaved $event)
+    {
+        $attributes = $event->data['attributes'];
+        $post = $event->post;
+
+        if (isset($attributes['isApproved'])) {
+            $post->assertCan($event->actor, 'approve');
+
+            $isApproved = (bool) $attributes['isApproved'];
+        } elseif (! empty($attributes['isHidden']) && $post->can($event->actor, 'approve')) {
+            $isApproved = true;
+        }
+
+        if (! empty($isApproved)) {
+            $post->is_approved = true;
+
+            $post->raise(new PostWasApproved($post));
+        }
+    }
+
+    public function approveDiscussion(PostWasApproved $event)
+    {
+        $post = $event->post;
+
+        $post->discussion->refreshCommentsCount();
+        $post->discussion->refreshLastPost();
+
+        if ($post->number == 1) {
+            $post->discussion->is_approved = true;
+            $post->discussion->save();
+        }
+    }
+}
diff --git a/extensions/approval/src/Listeners/HideUnapprovedContent.php b/extensions/approval/src/Listeners/HideUnapprovedContent.php
new file mode 100644
index 000000000..ee975cb71
--- /dev/null
+++ b/extensions/approval/src/Listeners/HideUnapprovedContent.php
@@ -0,0 +1,44 @@
+<?php namespace Flarum\Approval\Listeners;
+
+use Flarum\Events\ScopeModelVisibility;
+use Flarum\Events\ScopePostVisibility;
+use Flarum\Events\ScopeHiddenDiscussionVisibility;
+use Flarum\Core\Discussions\Discussion;
+use Illuminate\Contracts\Events\Dispatcher;
+
+class HideUnapprovedContent
+{
+    public function subscribe(Dispatcher $events)
+    {
+        $events->listen(ScopeModelVisibility::class, [$this, 'hideUnapprovedDiscussions']);
+        $events->listen(ScopePostVisibility::class, [$this, 'hideUnapprovedPosts']);
+    }
+
+    public function hideUnapprovedDiscussions(ScopeModelVisibility $event)
+    {
+        if ($event->model instanceof Discussion) {
+            $user = $event->actor;
+
+            if (! $user->hasPermission('discussion.editPosts')) {
+                $event->query->where(function ($query) use ($user) {
+                    $query->where('discussions.is_approved', 1)
+                        ->orWhere('start_user_id', $user->id);
+
+                    event(new ScopeHiddenDiscussionVisibility($query, $user, 'discussion.editPosts'));
+                });
+            }
+        }
+    }
+
+    public function hideUnapprovedPosts(ScopePostVisibility $event)
+    {
+        if ($event->discussion->can($event->actor, 'editPosts')) {
+            return;
+        }
+
+        $event->query->where(function ($query) use ($event) {
+            $query->where('posts.is_approved', 1)
+                ->orWhere('user_id', $event->actor->id);
+        });
+    }
+}
diff --git a/extensions/approval/src/Listeners/UnapproveNewContent.php b/extensions/approval/src/Listeners/UnapproveNewContent.php
new file mode 100644
index 000000000..d0d9c49ba
--- /dev/null
+++ b/extensions/approval/src/Listeners/UnapproveNewContent.php
@@ -0,0 +1,47 @@
+<?php namespace Flarum\Approval\Listeners;
+
+use Flarum\Events\PostWillBeSaved;
+use Flarum\Flags\Flag;
+use Illuminate\Contracts\Events\Dispatcher;
+
+class UnapproveNewContent
+{
+    private $savingPost;
+
+    public function subscribe(Dispatcher $events)
+    {
+        $events->listen(PostWillBeSaved::class, [$this, 'unapproveNewPosts']);
+    }
+
+    public function unapproveNewPosts(PostWillBeSaved $event)
+    {
+        $post = $event->post;
+
+        if (! $post->exists) {
+            if ($post->discussion->can($event->actor, 'replyWithoutApproval')) {
+                if ($post->is_approved === null) {
+                    $post->is_approved = true;
+                }
+
+                return;
+            }
+
+            $post->is_approved = false;
+
+            $post->afterSave(function ($post) {
+                if ($post->number == 1) {
+                    $post->discussion->is_approved = false;
+                    $post->discussion->save();
+                }
+
+                $flag = new Flag;
+
+                $flag->post_id = $post->id;
+                $flag->type = 'approval';
+                $flag->time = time();
+
+                $flag->save();
+            });
+        }
+    }
+}