#!/bin/bash

#=================================================
# GENERIC STARTING
#=================================================
# IMPORT GENERIC HELPERS
#=================================================

# Load common variables for all scripts.
source scripts/_variables

source scripts/_common.sh
source /usr/share/yunohost/helpers

#=================================================
# MANAGE SCRIPT FAILURE
#=================================================

ynh_clean_setup () {
# Clean installation remaining that are not handle by the remove script.
    ynh_clean_check_starting
}
# Exit if an error occurs during the execution of the script
ynh_abort_if_errors

#=================================================
# RETRIEVE ARGUMENTS
#=================================================

app=$YNH_APP_INSTANCE_NAME

path_url=$(ynh_app_setting_get --app=$app --key=path)
domain=$(ynh_app_setting_get --app=$app --key=domain)
pihole_version="$(ynh_app_setting_get --app=$app --key=pihole_version)"

#=================================================
# SPECIFIC ACTION
#=================================================
# ACTIVATE MAINTENANCE MODE
#=================================================
ynh_script_progression --message="Activating maintenance mode..." --time --weight=1

ynh_maintenance_mode_ON

#=================================================
# CREATE DEDICATED USER
#=================================================
ynh_script_progression --message="Making sure dedicated system user exists..." --time --weight=1

# Create a dedicated user (if not existing)
ynh_system_user_create --username=$app

#=================================================
# DOWNLOAD, CHECK AND UNPACK SOURCE
#=================================================
ynh_script_progression --message="Resetting source files..." --time --weight=1

# Download, check integrity, uncompress and patch the source from app.src
pihole_local_repo="/etc/.pihole"
(cd scripts
if [ "$pihole_version" == "Last 3.X" ]
then
    # Overwrite the version 3.3.1
    YNH_CWD=$PWD ynh_setup_source --dest_dir="$pihole_local_repo" --source_id=app_3
    # Overwrite admin dashboard
    YNH_CWD=$PWD ynh_setup_source --dest_dir="$final_path" --source_id=admin_dashboard_3
else
    # Overwrite the last version available
    YNH_CWD=$PWD ynh_setup_source --dest_dir="$pihole_local_repo" --source_id=app_last
    # Overwrite admin dashboard
    YNH_CWD=$PWD ynh_setup_source --dest_dir="$final_path" --source_id=admin_dashboard_last
fi

chown $app:www-data "$final_path"

)

#=================================================
# NGINX CONFIGURATION
#=================================================
ynh_script_progression --message="Resetting nginx web server configuration..." --time --weight=1

# Create a dedicated nginx config
yunohost app action run $app reset_default_nginx

#=================================================
# PHP-FPM CONFIGURATION
#=================================================
ynh_script_progression --message="Resetting php-fpm configuration..." --time --weight=1

# Create a dedicated php-fpm config
yunohost app action run $app reset_default_phpfpm

#=================================================
# RECREATE DIRECTORIES
#=================================================
ynh_script_progression --message="Recreating and populating directories..." --time --weight=1

pihole_storage="/etc/pihole"
mkdir -p "$pihole_storage"
chown $app: -R "$pihole_storage"

pihole_dir="/opt/pihole"
mkdir -p "$pihole_dir"

# Make a copy of Pi-Hole scripts
cp -a "$pihole_local_repo/gravity.sh" "$pihole_dir/"
cp -a $pihole_local_repo/advanced/Scripts/*.sh "$pihole_dir/"

# And copy this fucking COL_TABLE file...
cp -a "$pihole_local_repo/advanced/Scripts/COL_TABLE" "$pihole_dir/"

#=================================================
# COPY PI-HOLE MAIN SCRIPT
#=================================================
ynh_script_progression --message="Copying Pi-Hole main script..."

cp -a "$pihole_local_repo/pihole" /usr/local/bin/
cp -a "$pihole_local_repo/advanced/bash-completion/pihole" /etc/bash_completion.d/pihole

#=================================================
# RECREATE LOG FILES
#=================================================

touch /var/log/{pihole,pihole-FTL}.log
chmod 644 /var/log/{pihole,pihole-FTL}.log
dnsmasq_user=$(grep DNSMASQ_USER= /etc/init.d/dnsmasq | cut -d'"' -f2)
chown $dnsmasq_user:root /var/log/{pihole,pihole-FTL}.log

#=================================================
# RECREATE SUDOER FILE
#=================================================

# This sudoers config allow pihole to execute /usr/local/bin/pihole as root without password. Nothing more.
if [ "$pihole_version" == "Last 3.X" ]
then
    cp "$pihole_local_repo/advanced/pihole.sudo" /etc/sudoers.d/pihole
else
    cp "$pihole_local_repo/advanced/Templates/pihole.sudo" /etc/sudoers.d/pihole
fi
echo "$app ALL=NOPASSWD: /usr/local/bin/pihole" >> /etc/sudoers.d/pihole
# echo "Defaults secure_path = /sbin:/bin:/usr/sbin:/usr/bin:/usr/local/bin" >> /etc/sudoers.d/pihole
chmod 0440 /etc/sudoers.d/pihole

#=================================================
# REINSTALL LOGROTATE SCRIPT FOR PI-HOLE
#=================================================

if [ "$pihole_version" == "Last 3.X" ]
then
    cp "$pihole_local_repo/advanced/logrotate" "$pihole_storage/logrotate"
else
    cp "$pihole_local_repo/advanced/Templates/logrotate" "$pihole_storage/logrotate"
fi
sed -i "/# su #/d;" "$pihole_storage/logrotate"

#=================================================
# REINSTALLATION OF PIHOLE-FTL
#=================================================
ynh_script_progression --message="Reinstalling PiHole-FTL..." --weight=30

# Get the source of Pi-Hole-FTL
FTL_temp_path=$(mktemp -d)
if [ "$pihole_version" == "Last 3.X" ]
then
    # Install the version 3.3.1
    ynh_setup_source --dest_dir="$FTL_temp_path" --source_id=FTL_3
else
    # Install the last version available
    ynh_setup_source --dest_dir="$FTL_temp_path" --source_id=FTL_last
fi

# Instead of downloading a binary file, we're going to compile it
( cd "$FTL_temp_path"
ynh_exec_warn_less make
ynh_exec_warn_less make install )
ynh_secure_remove --file="$FTL_temp_path"

cp "../conf/dns-servers.conf" "$pihole_storage"

# Restore the default pihole-FTL.conf
yunohost app action run $app reset_default_ftl

if [ "$pihole_version" == "Last 3.X" ]
then
    # Version 3.3.1
    cp -a $pihole_local_repo/advanced/pihole-FTL.service /etc/init.d/pihole-FTL
    chmod +x /etc/init.d/pihole-FTL
    ynh_exec_warn_less systemctl enable pihole-FTL
else
    cp -a $pihole_local_repo/advanced/Templates/pihole-FTL.service /etc/init.d/pihole-FTL
    chmod +x /etc/init.d/pihole-FTL
    ynh_exec_warn_less systemctl enable pihole-FTL

    # Reload systemd config
    systemctl daemon-reload
fi

#=================================================
# RESET THE VARIABLES FILE
#=================================================

# Restore the default setupVars.conf
yunohost app action run $app reset_default_setupvars

#=================================================
# RESET DNSMASQ CONFIG
#=================================================

# Restore the default setupVars.conf
yunohost app action run $app reset_default_dnsmasq

#=================================================
# REINSTALL CRON JOB
#=================================================

if [ "$pihole_version" == "Last 3.X" ]
then
    cp $pihole_local_repo/advanced/pihole.cron /etc/cron.d/pihole
else
    cp $pihole_local_repo/advanced/Templates/pihole.cron /etc/cron.d/pihole
fi

# Remove git usage for version. Which fails because we use here a release instead of master.
ynh_replace_string --match_string=".*updatechecker.*" --replace_string="#&" --target_file=/etc/cron.d/pihole

#=================================================
# REINSTALL CONF_REGEN HOOK
#=================================================

(cd scripts; cp ../conf/dnsmasq_regenconf_hook /usr/share/yunohost/hooks/conf_regen/50-dnsmasq_$app)

#=================================================
# RESTART PIHOLE-FTL
#=================================================

ynh_script_progression --message="Restarting PiHole-FTL..." --weight=2

ynh_systemd_action --action=restart --service_name=pihole-FTL

#=================================================
# RELOAD NGINX
#=================================================
ynh_script_progression --message="Reloading nginx web server..." --time --weight=1

ynh_systemd_action --service_name=nginx --action=reload

#=================================================
# DEACTIVE MAINTENANCE MODE
#=================================================
ynh_script_progression --message="Disabling maintenance mode..." --time --weight=1

ynh_maintenance_mode_OFF

#=================================================
# END OF SCRIPT
#=================================================

ynh_script_progression --message="Execution completed" --time --last