#!/bin/bash

#=================================================
# GENERIC START
#=================================================
# IMPORT GENERIC HELPERS
#=================================================

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

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

ynh_clean_setup () {
	### Remove this function if there's nothing to clean before calling the remove script.
	true
}
# Exit if an error occurs during the execution of the script
ynh_abort_if_errors

#=================================================
# RETRIEVE ARGUMENTS FROM THE MANIFEST
#=================================================

app=$YNH_APP_INSTANCE_NAME

domain=$YNH_APP_ARG_DOMAIN
path_url=$YNH_APP_ARG_PATH
is_public=$YNH_APP_ARG_IS_PUBLIC
password=$YNH_APP_ARG_PASSWORD

#=================================================
# CHECK IF THE APP CAN BE INSTALLED WITH THESE ARGS
#=================================================
ynh_script_progression --message="Validating installation parameters..." --weight=1

final_path=/opt/couchdb
test ! -e "$final_path" || ynh_die --message="This path already contains a folder"

# Register (book) web path
ynh_webpath_register --app=$app --domain=$domain --path_url=$path_url

#=================================================
# STORE SETTINGS FROM MANIFEST
#=================================================
ynh_script_progression --message="Storing installation settings..." --weight=1

ynh_app_setting_set --app=$app --key=domain --value=$domain
ynh_app_setting_set --app=$app --key=path --value=$path_url
ynh_app_setting_set --app=$app --key=final_path --value=$final_path
ynh_app_setting_set --app=$app --key=password --value=$password

#=================================================
# STANDARD MODIFICATIONS
#=================================================
# FIND AND OPEN A PORT
#=================================================
ynh_script_progression --message="Finding an available port..." --weight=2

# Find an available port
port="5984"
# NOTE: ideally, it would be nice to make sure that port 5984 is not taken, but if doing so, something should be done on couchdb install to customize the port it uses
# port=$(ynh_find_port --port=5984)
ynh_app_setting_set --app=$app --key=port --value=$port

# Open the port
ynh_script_progression --message="Configuring firewall..." --weight=1
ynh_exec_warn_less yunohost firewall allow --no-upnp TCP $port

#=================================================
# INSTALL DEPENDENCIES
#=================================================
ynh_script_progression --message="Installing dependencies..." --weight=8

ynh_install_app_dependencies $pkg_dependencies

#=================================================
# NGINX CONFIGURATION
#=================================================
ynh_script_progression --message="Configuring NGINX web server..." --weight=3

# Create a dedicated NGINX config
ynh_add_nginx_config

#=================================================
# SPECIFIC SETUP
#=================================================
# INSTALL COUCHDB
#=================================================
ynh_script_progression --message="Installing couchdb..." --weight=60

COUCHDB_PASSWORD=$password
echo "couchdb couchdb/mode select standalone
couchdb couchdb/mode seen true
couchdb couchdb/bindaddress string 127.0.0.1
couchdb couchdb/bindaddress seen true
couchdb couchdb/adminpass password ${COUCHDB_PASSWORD}
couchdb couchdb/adminpass seen true
couchdb couchdb/adminpass_again password ${COUCHDB_PASSWORD}
couchdb couchdb/adminpass_again seen true" | debconf-set-selections
DEBIAN_FRONTEND=noninteractive # apt-get install -y --force-yes couchdb

apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 8756C4F765C9AC3CB6B85D62379CE192D401AB61

ynh_install_extra_app_dependencies --repo="https://apache.bintray.com/couchdb-deb buster main" --package="couchdb"
# ynh_install_extra_app_dependencies --repo="https://apache.bintray.com/couchdb-deb buster main" --package="couchdb" --key="https://apache.bintray.com/couchdb-deb/dists/buster/Release.gpg"

#=================================================
# MODIFY A CONFIG FILE, AND STORE IT'S CHECKSUM
#=================================================
ynh_script_progression --message="Customizing couchdb config..." --weight=2

# customize a bit the couch config
ynh_add_config --template="../conf/couch_ynh.ini" --destination="$final_path/etc/local.d/couch_ynh.ini"

# Calculate and store the config file checksum into the app settings
ynh_store_file_checksum --file="$final_path/etc/local.d/couch_ynh.ini"

#=================================================
# SETUP LOGROTATE
#=================================================
ynh_script_progression --message="Configuring log rotation..." --weight=2

# Use logrotate to manage application logfile(s)
ynh_use_logrotate

#=================================================
# INTEGRATE SERVICE IN YUNOHOST
#=================================================
ynh_script_progression --message="Integrating service in YunoHost..." --weight=1

yunohost service add $app --description="Open-source document-oriented NoSQL database" --log="/var/log/$app/$app.log" --needs_exposed_ports "$port"

#=================================================
# SETUP FAIL2BAN
#=================================================
ynh_script_progression --message="Configuring Fail2Ban..." --weight=3

# Create a dedicated Fail2Ban config
ynh_add_fail2ban_config --logpath="/var/log/couchdb/couchdb.log" --failregex="[warning] .*couch_httpd_auth: Authentication failed for user .+ from <HOST>" --max_retry=5

#=================================================
# SETUP SSOWAT
#=================================================
ynh_script_progression --message="Configuring permissions..." --weight=3

# Setup that clicking SSO tile opens fauxton UI
ynh_permission_url --permission="main" --url="/_utils/index.html" --add_url="/" --auth_header=false

# Make app public if necessary
if [ $is_public -eq 1 ]
then
	# Everyone can access the app.
	# The "main" permission is automatically created before the install script.
	ynh_permission_update --permission="main" --add="visitors"
fi

#=================================================
# RELOAD NGINX
#=================================================
ynh_script_progression --message="Reloading NGINX web server..." --weight=3

ynh_systemd_action --service_name=nginx --action=reload

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

ynh_script_progression --message="Installation of $app completed" --last