From d9af506dbfa1abc1287acfabb191cc7bdc8c260e Mon Sep 17 00:00:00 2001
From: Patrick Brueckner <pb@fino.digital>
Date: Wed, 8 May 2019 12:32:28 +0200
Subject: [PATCH] Make installer work on linux where slack is installed using
 deb or rpm

---
 darkify-slack.sh | 24 ++++++++++++++++++++----
 1 file changed, 20 insertions(+), 4 deletions(-)

diff --git a/darkify-slack.sh b/darkify-slack.sh
index 1a4601d..fb5d9f5 100644
--- a/darkify-slack.sh
+++ b/darkify-slack.sh
@@ -1,14 +1,30 @@
 #!/bin/sh
-# Darkify Slack on Mac OS:
 
-SLACK_INTEROP_JS="/Applications/Slack.app/Contents/Resources/app.asar.unpacked/src/static/ssb-interop.js"
+if [[ "$OSTYPE" == "linux-gnu" ]]; then
+    if [[ -e "/usr/lib/slack/resources/" ]]; then
+        SLACK_INTEROP_JS="/usr/lib/slack/resources/app.asar.unpacked/src/static/ssb-interop.js"
+        SUDO="sudo -H"
+        echo -e "You have slack installed in a non-writable directory. \nThis script will ask you for your password in order to apply the theme."
+    else
+        echo "Currently only the default .deb or .rpm installation are supported. Sorry"
+        exit 1
+    fi
+elif [[ "$OSTYPE" == "darwin"* ]]; then
+    # Darkify Slack on Mac OS:
+    SLACK_INTEROP_JS="/Applications/Slack.app/Contents/Resources/app.asar.unpacked/src/static/ssb-interop.js"
+    SUDO=""
+else
+    echo "Unsupported operating system. Sorry"
+    exit 1
+fi
+
 
 # Insipred from earlduque, thanks.
 if [ -z "`grep tt__customCss ${SLACK_INTEROP_JS}`" ]; then
     # Backup original CSS for reverts:
-    cp ${SLACK_INTEROP_JS} ${SLACK_INTEROP_JS}.bak
+    ${SUDO} cp ${SLACK_INTEROP_JS} ${SLACK_INTEROP_JS}.bak
     echo 'document.addEventListener("DOMContentLoaded",function(){;$.ajax({url: "https://raw.githubusercontent.com/earlduque/Slack-Dark-Theme/master/dark.css",success: function(css1) {$.ajax({url: "https://raw.githubusercontent.com/FallOutChonny/slack-dark-theme/master/darkify.css",success: function(css2) {$("<style></style>").appendTo("head").html(css1 + css2);}});}});});' \
-        >> ${SLACK_INTEROP_JS}
+       | ${SUDO} tee -a ${SLACK_INTEROP_JS} > /dev/null
     echo "Dark theme applied to Slack."
 else
     echo "Dark theme already present on Slack."