Update setup.sh

Add multiples check and rename old bashrc.

setup.sh

@@ -1,7 +1,70 @@
 #!/bin/bash
 
-gitpath=`pwd`
-curl -sS https://starship.rs/install.sh | sh
-ln -s $gitpath/.bashrc $HOME/.bashrc
-ln -s $gitpath/starship.toml $HOME/.config/starship.toml
-sudo apt install autojump
+RC='\e[0m'
+RED='\e[31m'
+YELLOW='\e[33m'
+GREEN='\e[32m'
+
+checkEnv(){
+    ## Check if the current directory is writable.
+    GITPATH=$(pwd)
+    if [[ ! -w ${GITPATH} ]];then
+        echo -e "${RED}Can't write to ${GITPATH}${RC}"
+        exit 1
+    fi
+
+    ## Check for requirements.
+    REQUIREMENTS='curl apt groups sudo'
+    if ! which ${REQUIREMENTS}>/dev/null;then
+        echo -e "${RED}To run me, you need: ${REQUIREMENTS}${RC}"
+        exit 1
+    fi
+
+    ## Check if member of the sudo group.
+    if ! groups|grep sudo>/dev/null;then
+        echo -e "${RED}You need to be a member of the sudo group to run me!"
+        exit 1
+    fi
+}
+
+installDepend(){
+    ## Check for dependencies.
+    DEPENDENCIES='autojump bash bash-completion'
+    echo -e "${YELLOW}Installing dependencies...${RC}"
+    sudo dpkg --configure -a
+    sudo apt-get install -fyq ${DEPENDENCIES}
+    sudo dpkg --configure -a
+}
+
+installStarship(){
+    if ! curl -sS https://starship.rs/install.sh|sh;then
+        echo -e "${RED}Something went wrong during starship install!${RC}"
+        exit 1
+    fi
+}
+
+linkConfig(){
+    ## Check if a bashrc file is already there.
+    OLD_BASHRC="${HOME}/.bashrc"
+    if [[ -e ${OLD_BASHRC} ]];then
+        echo -e "${YELLOW}Moving old bash config file to ${HOME}/.bashrc.bak${RC}"
+        if ! mv ${OLD_BASHRC} ${HOME}/.bashrc.bak;then
+            echo -e "${RED}Can't move the old bash config file!${RC}"
+            exit 1
+        fi
+    fi
+
+    echo -e "${YELLOW}Linking new bash config file...${RC}"
+    ## Make symbolic link.
+    ln -svf ${GITPATH}/.bashrc ${HOME}/.bashrc
+    ln -svf ${GITPATH}/starship.toml ${HOME}/.config/starship.toml
+}
+
+checkEnv
+installDepend
+installStarship
+if linkConfig;then
+    echo -e "${GREEN}Done!\nrestart your shell to see the changes.${RC}"
+else
+    echo -e "${RED}Something went wrong!${RC}"
+fi