cli: add ppman install and list

cli/commands/ppman.js

@@ -0,0 +1,7 @@
+exports.command = 'ppman'
+exports.aliases = ['pkg']
+exports.describe = 'Package Manager'
+
+exports.builder = yargs => yargs
+    .commandDir('ppman_commands')
+    .demandCommand()

cli/commands/ppman_commands/install.js

@@ -0,0 +1,35 @@
+const {PistonEngine} = require('piston-api-client');
+const chalk = require('chalk');
+
+exports.command = ['install <language> <language-version>']
+exports.aliases = ['i']
+exports.describe = 'Installs the named package'
+
+
+const msg_format = {
+    'color': p => `${p.success ? chalk.green.bold('✓') : chalk.red.bold('❌')} Installation ${p.success ? "succeeded" : "failed: " + p.message}`,
+    'monochrome': p => `Installation ${p.success ? "succeeded" : "failed: " + p.message}`,
+    'json': JSON.stringify
+
+}
+
+exports.handler = async function(argv){
+    const api = new PistonEngine(argv['piston-url']);
+    
+    const repos = await api.list_repos();
+    const repos_obj = await Promise.all(repos.repos.map(({slug}) => api.get_repo(slug)));
+    const repo_pkgs = await Promise.all(repos_obj.map(
+        async repo => ({
+            repo: repo,
+            packages: await repo.list_packages().catch(x=>[])
+        })
+    ))
+
+    const repo = repo_pkgs.find(r => r.packages.find(p=>p.language == argv['language'] && p.language_version == argv['language-version']))
+    if(!repo) throw Error("Package could not be located")
+
+    const package = await repo.repo.get_package(argv['language'], argv['language-version'])
+    const install = await package.install().catch(x=>x)
+    
+    console.log(msg_format.color(install));
+}

cli/commands/ppman_commands/list.js

@@ -0,0 +1,31 @@
+const {PistonEngine} = require('piston-api-client');
+const chalk = require('chalk');
+
+exports.command = ['list']
+exports.aliases = ['l']
+exports.describe = 'Lists all available packages'
+
+
+const msg_format = {
+    'color': p => `${chalk[p.installed ? "green":"red"]("•")} ${p.language} ${p.language_version}`,
+    'monochrome': p => `${p.language} ${p.language_version} ${p.installed ? "(INSTALLED)": ""}`,
+    'json': JSON.stringify
+
+}
+
+exports.handler = async function(argv){
+    const api = new PistonEngine(argv['piston-url']);
+    
+    const repos = await api.list_repos();
+    const repos_obj = await Promise.all(repos.repos.map(({slug}) => api.get_repo(slug)));
+    const packages = await repos_obj.reduce(async (a, c) => [
+        ...await a,
+        ...await c.list_packages().catch(x=>{console.log(x); return []})
+    ], []);
+    
+    const pkg_msg = packages
+        .map(msg_format.color)
+        .join('\n');
+
+    console.log(pkg_msg);
+}