From 86e570efb24de955fefe56ce6f4fe81179d116e6 Mon Sep 17 00:00:00 2001
From: Al McKinlay <github@10people.co.uk>
Date: Fri, 21 Aug 2020 12:26:35 +0100
Subject: [PATCH] Add version support for packages.

---
 src/command-line/install.js   | 16 ++++++++++++++++
 src/helper.js                 |  5 +++++
 src/plugins/packages/index.js |  8 ++++++++
 3 files changed, 29 insertions(+)

diff --git a/src/command-line/install.js b/src/command-line/install.js
index 18ccbb61..53108f57 100644
--- a/src/command-line/install.js
+++ b/src/command-line/install.js
@@ -2,6 +2,7 @@
 
 const log = require("../log");
 const colors = require("chalk");
+const semver = require("semver");
 const program = require("commander");
 const Helper = require("../helper");
 const Utils = require("./utils");
@@ -40,6 +41,21 @@ program
 					process.exit(1);
 				}
 
+				if (
+					json.thelounge.supports &&
+					!semver.satisfies(Helper.getVersionNumber(), json.thelounge.supports)
+				) {
+					log.error(
+						`${colors.red(
+							json.name + " v" + json.version
+						)} does not support The Lounge v${Helper.getVersionNumber()}. Supported version(s): ${
+							json.thelounge.supports
+						}`
+					);
+
+					process.exit(2);
+				}
+
 				log.info(`Installing ${colors.green(json.name + " v" + json.version)}...`);
 
 				return Utils.executeYarnCommand("add", "--exact", `${json.name}@${json.version}`)
diff --git a/src/helper.js b/src/helper.js
index fcfe93ff..c12fde10 100644
--- a/src/helper.js
+++ b/src/helper.js
@@ -36,6 +36,7 @@ const Helper = {
 	setHome,
 	getVersion,
 	getVersionCacheBust,
+	getVersionNumber,
 	getGitCommit,
 	ip2hex,
 	mergeConfig,
@@ -60,6 +61,10 @@ function getVersion() {
 	return gitCommit ? `source (${gitCommit} / ${version})` : version;
 }
 
+function getVersionNumber() {
+	return pkg.version;
+}
+
 let _gitCommit;
 
 function getGitCommit() {
diff --git a/src/plugins/packages/index.js b/src/plugins/packages/index.js
index d0ec3943..ea1ed2cd 100644
--- a/src/plugins/packages/index.js
+++ b/src/plugins/packages/index.js
@@ -4,6 +4,7 @@ const _ = require("lodash");
 const log = require("../../log");
 const colors = require("chalk");
 const path = require("path");
+const semver = require("semver");
 const Helper = require("../../helper");
 const themes = require("./themes");
 const packageMap = new Map();
@@ -93,6 +94,13 @@ function loadPackage(packageName) {
 			throw "'thelounge' is not present in package.json";
 		}
 
+		if (
+			packageInfo.thelounge.supports &&
+			!semver.satisfies(Helper.getVersionNumber(), packageInfo.thelounge.supports)
+		) {
+			throw `v${packageInfo.version} does not support this version of The Lounge. Supports: ${packageInfo.thelounge.supports}`;
+		}
+
 		packageFile = require(packagePath);
 	} catch (e) {
 		log.error(`Package ${colors.bold(packageName)} could not be loaded: ${colors.red(e)}`);