From 7e94f9792a9a596cfd404adc4fc1ac1abe4bd33d Mon Sep 17 00:00:00 2001
From: garrettmills <garrett@glmdev.tech>
Date: Fri, 6 Mar 2020 09:49:08 -0600
Subject: [PATCH] Add package absent state

---
 app/classes/state/os/PackageAbsentState.js | 24 ++++++++++++++++++++++
 app/services/states.service.js             |  2 +-
 2 files changed, 25 insertions(+), 1 deletion(-)
 create mode 100644 app/classes/state/os/PackageAbsentState.js

diff --git a/app/classes/state/os/PackageAbsentState.js b/app/classes/state/os/PackageAbsentState.js
new file mode 100644
index 0000000..945ebe2
--- /dev/null
+++ b/app/classes/state/os/PackageAbsentState.js
@@ -0,0 +1,24 @@
+const State = require('../State')
+
+class PackageAbsentState extends State {
+    constructor(host, config) {
+        if ( !host.packages ) {
+            throw new Error(`Cannot apply package absent state to host ${host.name}: missing package manager API.`)
+        }
+        super(host, config)
+    }
+
+    async reverse() {
+        return this._host.packages.install(this._config.package)
+    }
+
+    async check() {
+        return !(await this._host.packages.is_installed(this._config.package))
+    }
+
+    async apply() {
+        return this._host.packages.uninstall(this._config.package)
+    }
+}
+
+module.exports = exports = PackageAbsentState
diff --git a/app/services/states.service.js b/app/services/states.service.js
index 4b44fa4..00b5a20 100644
--- a/app/services/states.service.js
+++ b/app/services/states.service.js
@@ -14,7 +14,6 @@ class StatesService extends Service {
         // TODO apache and nginx states - virtual host, reverse proxy
         // TODO package repository states - import keys, install repository
         // TODO service manager states - service enabled, service installed, stopped
-        // TODO package states - uninstalled
 
         'fs.file': require('../classes/state/fs/FileState'),
         'fs.directory': require('../classes/state/fs/DirectoryState'),
@@ -30,6 +29,7 @@ class StatesService extends Service {
         'os.cmd': require('../classes/state/os/CommandState'),
 
         'package.present': require('../classes/state/os/PackageState'),
+        'package.absent': require('../classes/state/os/PackageAbsentState'),
         'package.updates': require('../classes/state/os/UpdateState'),
         'package.cache.clear': require('../classes/state/os/PackageCacheClearedState'),