1 files changed, 44 insertions, 4 deletions

diff --git a/commands/install.js b/commands/install.js
index c2da58a..b65725d 100644
--- a/commands/install.js
+++ b/commands/install.js
@@ -15,12 +15,39 @@ module.exports = async (argv) => {
     let dir = argv.package.substring(0, 1).replace(/[^a-zA-Z0-9]/gm, "#");
     let pkg = JSON.parse(fs.readFileSync(home + "/repository/" + dir + "/" + argv.package + ".json").toString());
 
+    let replacement = null;
     if (os.platform() === "win32" && pkg.platforms.windows === 0) {
-        die(c.red("error: ") + "package '" + argv.package + "' not available on platform 'win32'");
+        if (typeof pkg.replaced.windows === "string") {
+            replacement = pkg.replaced.windows
+        }
+    } else if (os.platform() === "linux" && pkg.platforms.linux === 0) {
+        if (typeof pkg.replaced.linux === "string") {
+            replacement = pkg.replaced.linux
+        }
+    } else if (os.platform() === "darwin" && pkg.platforms.mac === 0) {
+        if (typeof pkg.replaced.mac === "string") {
+            replacement = pkg.replaced.mac
+        }
+    }
+
+    if (os.platform() === "win32" && pkg.platforms.windows === 0) {
+        if (typeof replacement === "string") {
+            die(c.red("error: ") + "package '" + argv.package + "' not available on platform 'win32', replaced by '" + replacement + "'");
+        } else {
+            die(c.red("error: ") + "package '" + argv.package + "' not available on platform 'win32', no replacement available");
+        }
     } else if (os.platform() === "linux" && pkg.platforms.linux === 0) {
-        die(c.red("error: ") + "package '" + argv.package + "' not available on platform 'linux'");
+        if (typeof replacement === "string") {
+            die(c.red("error: ") + "package '" + argv.package + "' not available on platform 'linux', replaced by '" + replacement + "'");
+        } else {
+            die(c.red("error: ") + "package '" + argv.package + "' not available on platform 'linux', no replacement available");
+        }
     } else if (os.platform() === "darwin" && pkg.platforms.mac === 0) {
-        die(c.red("error: ") + "package '" + argv.package + "' not available on platform 'macos'");
+        if (typeof replacement === "string") {
+            die(c.red("error: ") + "package '" + argv.package + "' not available on platform 'macos', replaced by '" + replacement + "'");
+        } else {
+            die(c.red("error: ") + "package '" + argv.package + "' not available on platform 'macos', no replacement available");
+        }
     }
 
     if (os.platform() === "win32" && pkg.platforms.windows === 1) {
@@ -85,7 +112,7 @@ module.exports = async (argv) => {
         console.log("      security:  " + c.red.inverse("unsafe"));
     }
 
-    if (pkg.deprecated) {
+    if (typeof pkg.deprecated === "string") {
         if (pkg.deprecated.toString().trim() !== "") {
             console.log(c.yellow("warn: ") + "package '" + pkg.name + "' has been marked as deprecated: " + pkg.deprecated);
         } else {
@@ -117,5 +144,18 @@ module.exports = async (argv) => {
         fs.writeFileSync(os.homedir() + "/.twilight/installed.json", JSON.stringify(installed));
         spinner.succeed("Extracting package... done");
         console.log("  Size change: +" + require('../hooks/size')(pkg.id));
+
+        let postinstall = [];
+        if (os.platform() === "win32") postinstall = pkg.postinstall.windows;
+        if (os.platform() === "linux") postinstall = pkg.postinstall.linux;
+        if (os.platform() === "darwin") postinstall = pkg.postinstall.mac;
+
+        if (postinstall.length > 0) {
+            spinner = ora("Running post-install hooks...").start();
+            for (let hook of postinstall) {
+                require('child_process').execSync(hook, { stdio: "inherit" })
+            }
+            spinner.succeed("Running post-install hooks... done");
+        }
     })
 }
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