#!/bin/bash

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

# Load common variables for all scripts.
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)
final_path=$(ynh_app_setting_get --app=$app --key=final_path)

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

ynh_maintenance_mode_ON

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

# Download, check integrity, uncompress and patch the source from app.src
(
	cd scripts
	# Overwrite the last version available
	YNH_CWD=$PWD ynh_setup_source --dest_dir="$PI_HOLE_LOCAL_REPO" --source_id="pi-hole_Core"
	# Overwrite admin dashboard
	YNH_CWD=$PWD ynh_setup_source --dest_dir="$final_path" --source_id=pi-hole_AdminLTE

	chown $app:www-data "$final_path"

)

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

mkdir -p "$PI_HOLE_CONFIG_DIR"
chown $app: -R "$PI_HOLE_CONFIG_DIR"

mkdir -p "$PI_HOLE_INSTALL_DIR"

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

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

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

cp -a "$PI_HOLE_LOCAL_REPO/pihole" $PI_HOLE_BIN_DIR/
cp -a "$PI_HOLE_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 $PI_HOLE_BIN_DIR/pihole as root without password. Nothing more.
cp "$PI_HOLE_LOCAL_REPO/advanced/Templates/pihole.sudo" /etc/sudoers.d/pihole
echo "$app ALL=NOPASSWD: $PI_HOLE_BIN_DIR/pihole" >> /etc/sudoers.d/pihole
# echo "Defaults secure_path = /sbin:/bin:/usr/sbin:/usr/bin:$PI_HOLE_BIN_DIR" >> /etc/sudoers.d/pihole
chmod 0440 /etc/sudoers.d/pihole

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

cp "$PI_HOLE_LOCAL_REPO/advanced/Templates/logrotate" "$PI_HOLE_CONFIG_DIR/logrotate"
sed -i "/# su #/d;" "$PI_HOLE_CONFIG_DIR/logrotate"

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

# Get the source of Pi-Hole-FTL
FTL_temp_path=$(mktemp -d)
# Install the last version available
ynh_setup_source --dest_dir="$FTL_temp_path" --source_id="pi-hole_FTL"

# 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" "$PI_HOLE_CONFIG_DIR"

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

cp -a $PI_HOLE_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

#=================================================
# 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
#=================================================

cp $PI_HOLE_LOCAL_REPO/advanced/Templates/pihole.cron /etc/cron.d/pihole

# 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_$app
	ynh_replace_string --match_string="__APP__" --replace_string="$app" --target_file="/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..." --weight=1

ynh_systemd_action --service_name=nginx --action=reload

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

ynh_maintenance_mode_OFF

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

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