#!/bin/bash

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

source /usr/share/yunohost/helpers

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

# Exit if an error occurs during the execution of the script
ynh_abort_if_errors

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

# Retrieve arguments
app=$YNH_APP_INSTANCE_NAME
domain=$YNH_APP_ARG_DOMAIN
path_url=$YNH_APP_ARG_PATH
redirect_type=$YNH_APP_ARG_REDIRECT_TYPE
redirect_path=$YNH_APP_ARG_REDIRECT_PATH
is_public=${YNH_APP_ARG_IS_PUBLIC:-1}
propagate_subpath=$(echo $YNH_APP_ARG_REDIRECT_TYPE | grep -q subpath && echo 1 || echo 0)
frame_ancestors="'none'"
client_max_body_size="1m"

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

# Validate redirect path
url_regex='(https?|ftp|file)://[-A-Za-z0-9\+&@#/%?=~_|!:,.;]*[-A-Za-z0-9\+&@#/%=~_|]'
[[ ! $redirect_path =~ $url_regex ]] && ynh_die "Invalid destination: $redirect_path" 1

# Avoid uncrypted remote destination with reverse proxy mode
# Indeed the SSO send the password in all requests in HTTP headers
url_regex='^(http://(127\.[0-9]+\.[0-9]+\.[0-9]+|localhost)|https://.*)(:[0-9]+)?(/.*)?$'
[[ "$redirect_type" = "proxy" ]] && [[ ! $redirect_path =~ $url_regex ]] && ynh_die \
"For secure reason, you can't use an unencrypted http remote destination couple with ssowat for your reverse proxy: $redirect_path" 1

if [ $is_public -eq 0 ] && [[ $redirect_type != "proxy" ]]
then
    is_public=1
    YNH_APP_ARG_IS_PUBLIC=1
    ynh_warn "HTTP private redirection are not supported. Your redirection has been reflagged as public."
fi
# Register (book) web path
ynh_webpath_register --app=$app --domain=$domain --path_url=$path_url

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

# Save extra settings
ynh_app_setting_set --app=$app --key=redirect_type --value=$redirect_type
ynh_app_setting_set --app=$app --key=redirect_path --value=$redirect_path
ynh_app_setting_set --app=$app --key=frame_ancestors --value="'none'"
ynh_app_setting_set --app=$app --key=client_max_body_size --value="1m"

#=================================================
# SPECIFIC SETUP
#=================================================
ynh_script_progression --message="Preparing NGINX web server configuration..." --weight=1

cp ../conf/nginx-$redirect_type.conf ../conf/nginx.conf

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

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

# Create a dedicated NGINX config
ynh_add_nginx_config

#=================================================
# SETUP SSOWAT
#=================================================
ynh_script_progression --message="Configuring permissions..." --weight=1

# 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.
    if [[ $redirect_type != "proxy" ]]
    then
	    ynh_permission_update --permission="main" --add="visitors" --protected=1
    else
	    ynh_permission_update --permission="main" --add="visitors"
    fi
fi

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

ynh_systemd_action --service_name=nginx --action=reload

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

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