Uninstallation (#211)

api/src/ppman/package.js

@@ -131,6 +131,28 @@ class Package {
         };
     }
 
+
+    async uninstall(){
+        logger.info(`Uninstalling ${this.language}-${this.version.raw}`);
+
+        logger.debug("Finding runtime")
+        const runtime = runtime.get_latest_runtime_matching_language_version(this.language, this.version.raw);
+
+        logger.debug("Unregistering runtime")
+        runtime.unregister();
+
+        logger.debug("Cleaning files from disk")
+        await fs.rmdir(this.install_path, {recursive: true})
+
+        logger.info(`Uninstalled ${this.language}-${this.version.raw}`)
+
+        return {
+            language: this.language,
+            version: this.version.raw
+        };
+
+    }
+
 }
 
 module.exports = {

api/src/ppman/routes.js

@@ -91,11 +91,33 @@ module.exports = {
 
     // DELETE /packages/:language/:version
     async package_uninstall(req, res) {
+        logger.debug('Request to install package');
+
+        const pkg = await get_package(req.params.language, req.params.version);
+
+        if (pkg == null) {
             return res
-            .status(500)
+                .status(404)
                 .send({
-                message: 'Not implemented'
+                    message: `Requested package ${req.params.language}-${req.params.version} does not exist`
                 });
         }
 
+        try {
+            const response = await pkg.uninstall();
+
+            return res
+                .status(200)
+                .send(response);
+        } catch(e) {
+            logger.error(`Error while uninstalling package ${pkg.language}-${pkg.version}:`, e.message);
+
+            return res
+                .status(500)
+                .send({
+                    message: e.message
+                });
+        }
+    }
+
 };

api/src/runtime.js

@@ -63,6 +63,11 @@ class Runtime {
     toString() {
         return `${this.language}-${this.version.raw}`;
     }
+
+    unregister() {
+        const index = runtimes.indexOf(this);
+        runtimes.splice(index, 1); //Remove from runtimes list
+    }
 }
 
 module.exports = runtimes;

cli/commands/ppman_commands/uninstall.js

@@ -0,0 +1,23 @@
+const chalk = require('chalk');
+
+exports.command = ['uninstall <language> <language-version>']
+exports.aliases = ['u']
+exports.describe = 'Installs the named package'
+
+
+const msg_format = {
+    'color': p => `${p.language ? chalk.green.bold('✓') : chalk.red.bold('❌')} Uninstallation ${p.language ? "succeeded" : "failed: " + p.message}`,
+    'monochrome': p => `Uninstallation ${p.language ? "succeeded" : "failed: " + p.message}`,
+    'json': JSON.stringify
+
+}
+
+exports.handler = async function({axios, language, languageVersion}){
+    try{
+        const install = await axios.delete(`/packages/${language}/${languageVersion}`)
+        
+        console.log(msg_format.color(install.data));
+    }catch({response}){
+        console.error(response.data.message)
+    }
+}