Add conf file and parameters values

Signed-off-by: Alban Vidal <alban.vidal@zordhak.fr>

.gitignore

@@ -0,0 +1 @@
+conf

auto_config.sh

@@ -33,31 +33,102 @@
 
 ################################################################################
 
+# Current git directory
+GIT_DIR="$(realpath ${0%/*})"
+
+# Conf file path
+CONF_FILE="$GIT_DIR/conf"
+
+# Used if parameter id required - Do not edit
+RELOAD_PARAMATER=false
+
+################################################################################
+
+# Function to request parameters
+function func_read_param() {
+    # $1 => PARAM => Parameter name
+    PARAM="$1"
+    # after shitf, $@ => Detail of selected param
+    shift
+    DETAIL="$@"
+    # Display and read reponse
+    read -p "${DETAIL}: " VALUE
+    # Delete line if exist, and write in conf file
+    sed -i "/$PARAM/d" $CONF_FILE
+    # Write param name and value in conf file
+    echo "${PARAM}='$VALUE'" >> $CONF_FILE
+    # Set to true to reload this script
+    RELOAD_PARAMATER=true
+}
+
+# List names of parameter variables and description of parameter
+LIST_PARAM="
+UNATTENDED_EMAIL Unattended email alert
+GIT_USERNAME Git username
+GIT_EMAIL Git email
+"
+
+IFS=$'\n'
+
+# Test if conf file exist
+if [ -f $CONF_FILE ] ;then
+    # If conf file exist, load it and test if each variable is defined
+    . $CONF_FILE
+        for DETAIL_PARAM in $LIST_PARAM ;do
+            PARAM=${DETAIL_PARAM%% *} # Delete all after first space
+            DETAIL=${DETAIL_PARAM#* } # Delete all before first space
+            # If variable is not defined, or if variable is empty, do request it
+            if [ -z ${!PARAM} ] ;then
+                func_read_param $PARAM $DETAIL
+            fi
+        done
+else
+    # Conf file does not exist
+    touch $CONF_FILE # Create empty conf file
+    # For all variable, do request it
+    for DETAIL_PARAM in $LIST_PARAM ;do
+        PARAM=${DETAIL_PARAM%% *} # Delete all after first space
+        DETAIL=${DETAIL_PARAM#* } # Delete all before first space
+        func_read_param $PARAM $DETAIL
+    done
+fi
+
+# If reload is required
+if $RELOAD_PARAMATER ; then
+    $0 # Restart this script
+    exit 0
+fi
+
+################################################################################
+
 # Install the packages
-apt-get -y install -y git tig bash-completion unattended-upgrades apt-listchanges logrotate
+apt-get -y install      \
+    git                 \
+    tig                 \
+    bash-completion     \
+    unattended-upgrades \
+    apt-listchanges     \
+    logrotate
 
 # Configure auto updates
 sed -i \
-    -e 's#^//Unattended-Upgrade::Mail .*#Unattended-Upgrade::Mail "unattended@zordhak.fr";#' \
+    -e "s#^//Unattended-Upgrade::Mail .*#Unattended-Upgrade::Mail '$UNATTENDED_EMAIL';#" \
     -e 's#^//Unattended-Upgrade::MailOnlyOnError .*#Unattended-Upgrade::MailOnlyOnError "true";#' \
      /etc/apt/apt.conf.d/50unattended-upgrades
 
-# Git global username and email
-read -p "Git username: " GIT_USERNAME
-read -p "Git email: " GIT_EMAIL
-
+# Set git global config
 git config --global user.name "$GIT_USERNAME"
 git config --global user.email "$GIT_EMAIL"
 
 ## Symbolic links
 # Bashrc
-ln -sf /srv/git/basic_config_debian/root/.bashrc /root/
+ln -sf $GIT_DIR/root/.bashrc /root/
 # Profile
-ln -sf /srv/git/basic_config_debian/root/.profile /root/
+ln -sf $GIT_DIR/root/.profile /root/
 mkdir -p /root/.profile.d
-ln -sf /srv/git/basic_config_debian/root/.profile.d/00_connexion_info.conf /root/.profile.d/
+ln -sf $GIT_DIR/root/.profile.d/00_connexion_info.conf /root/.profile.d/
 # vimrc
-ln -sf /srv/git/basic_config_debian/root/.vimrc /root/
+ln -sf $GIT_DIR/root/.vimrc /root/
 
 ## Tune logrotate
 # Fix logrotate bug