#!/bin/bash

# causes the shell to exit if any subcommand or pipeline returns a non-zero status
set -e

# This is a multi-instance app, meaning it can be installed several times independently
# The id of the app as stated in the manifest is available as $YNH_APP_ID
# The instance number is available as $YNH_APP_INSTANCE_NUMBER (equals "1", "2", ...)
# The app instance name is available as $YNH_APP_INSTANCE_NAME
#    - the first time the app is installed, YNH_APP_INSTANCE_NAME = ynhexample
#    - the second time the app is installed, YNH_APP_INSTANCE_NAME = ynhexample__2
#    - ynhexample__{N} for the subsequent installations, with N=3,4, ...
# The app instance name is probably what you are interested the most, since this is
# guaranteed to be unique. This is a good unique identifier to define installation path,
# db names, ...
app=$YNH_APP_INSTANCE_NAME

# Source app helpers
. /usr/share/yunohost/helpers

# Retrieve arguments
domain=$(ynh_app_setting_get "$app" domain)
path=$(ynh_app_setting_get "$app" path)
is_public=$(ynh_app_setting_get "$app" is_public)
redirect_type=$(ynh_app_setting_get "$app" redirect_type)
redirect_path=$(ynh_app_setting_get "$app" redirect_path)

# Default value for redirect_type if upgrading from https://github.com/scith/redirect_ynh
if [ -z "$redirect_type" ];
then
    redirect_type="proxy"
    ynh_app_setting_set $app 'redirect_type' $redirect_type
fi

# Remove trailing slash to path
path=${path%/}
#force location to be / or /foo
location=${path:-/}

# Check domain/path availability
sudo yunohost app checkurl $domain$path -a $app \
    || (echo "Path not available: $domain$path" && exit 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

# Nginx configuration
sed -i "s@YNH_LOCATION@$location@g" ../conf/nginx-*.conf
if [ "$redirect_type" = "visible_302" ];
then
    sed -i "s@YNH_REDIRECT_PATH@$redirect_path@g" ../conf/nginx-visible-302.conf
    sudo cp ../conf/nginx-visible-302.conf /etc/nginx/conf.d/$domain.d/$app.conf
elif [ "$redirect_type" = "visible_301" ];
then
    sed -i "s@YNH_REDIRECT_PATH@$redirect_path@g" ../conf/nginx-visible-301.conf
    sudo cp ../conf/nginx-visible-301.conf /etc/nginx/conf.d/$domain.d/$app.conf
elif [ "$redirect_type" = "proxy" ];
then
    sed -i "s@YNH_REDIRECT_PATH@$redirect_path@g" ../conf/nginx-proxy.conf
    sudo cp ../conf/nginx-proxy.conf /etc/nginx/conf.d/$domain.d/$app.conf
fi

# Make app public if necessary
if [[ "$is_public" -ne 0 ]];
then
    sudo yunohost app setting $app unprotected_uris -v "/"
fi

# Reload Nginx and regenerate SSOwat conf
sudo service nginx reload
sudo yunohost app ssowatconf