From ea2e7fb7704b647c64b83d71084c9b67e681e943 Mon Sep 17 00:00:00 2001
From: surtur <a_mirre@utb.cz>
Date: Sat, 27 Feb 2021 15:17:02 +0100
Subject: [PATCH] refactor screen-share-sway

* introduce variables for common values
* properly quote variables
* check if directories exist before certain steps
* exit on cd failure
---
 bin/screen-share-sway | 37 ++++++++++++++++++++++---------------
 1 file changed, 22 insertions(+), 15 deletions(-)

diff --git a/bin/screen-share-sway b/bin/screen-share-sway
index 0f9860f..79848fa 100755
--- a/bin/screen-share-sway
+++ b/bin/screen-share-sway
@@ -5,13 +5,18 @@
 
 grep -q "alias obs" ~/.zshrc || echo 'alias obs="QT_QPA_PLATFORM=xcb obs"' >> ~/.zshrc
 
-cd ~/utils
+V4L2_VERSION="0.12.5"
+U="$HOME/utils"
 
-dotfiles/bin/v4l2pls 0.12.5
+# grab and build latest v4l2 module
+"$U"/dotfiles/bin/v4l2pls "$V4L2_VERSION"
 
 # ref: https://github.com/obsproject/obs-studio/wiki/Install-Instructions#red-hatfedora-based-build-directions
-git clone --recursive https://github.com/obsproject/obs-studio.git
-cd ~/utils/obs-studio
+if [ ! -d "$U/obs-studio" ]; then
+    cd "$U" || exit
+    git clone --recursive https://github.com/obsproject/obs-studio.git
+fi
+cd "$U"/obs-studio || exit
 git pull
 git submodule update --recursive
 mkdir -pv build && cd build
@@ -20,24 +25,26 @@ make -j4
 sudo make install
 
 
-cd ~/utils
-
-git clone https://github.com/CatxFish/obs-v4l2sink.git
-cd obs-v4l2sink
+if [ ! -d "$U/obs-v4l2sink" ]; then
+    cd "$U" || exit
+    git clone https://github.com/CatxFish/obs-v4l2sink.git
+fi
+cd "$U"/obs-v4l2sink || exit
 git pull
 
 mkdir -pv build && cd build
 cmake -DLIBOBS_INCLUDE_DIR="../../obs-studio/libobs" -DCMAKE_INSTALL_PREFIX=~/.local ..
 make -j4
 make install
-cd ~/utils/obs-v4l2sink
 
-cd ~/utils
 
-hg clone https://hg.sr.ht/~scoopta/wlrobs
-cd wlrobs
+if [ ! -d "$U/wlrobs" ]; then
+    cd "$U" || exit
+    hg clone https://hg.sr.ht/~scoopta/wlrobs
+fi
+cd "$U"/wlrobs || exit
 hg pull
-meson build
+meson --reconfigure build
 ninja -C build
-mkdir -pv ~/.config/obs-studio/plugins/wlrobs/bin/64bit
-cp -v build/libwlrobs.so ~/.config/obs-studio/plugins/wlrobs/bin/64bit
+mkdir -pv "$HOME"/.config/obs-studio/plugins/wlrobs/bin/64bit
+cp -v build/libwlrobs.so "$HOME"/.config/obs-studio/plugins/wlrobs/bin/64bit