#!/bin/bash

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

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

# 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

# Get old parameter of the app
domain=$(sudo yunohost app setting $app domain)
path=$(sudo yunohost app setting $app path)
is_public=$(sudo yunohost app setting $app is_public)

# Check domain/path availability
sudo yunohost app checkurl $domain$path -a $app
if [[ ! $? -eq 0 ]]; then
    echo "There is already an app on this URL : $domain$path" | sudo tee /dev/stderr
    exit 1
fi

final_path=/opt/yunohost/searx
if [ -d $final_path ]; then
    echo "There is already a directory: $final_path " | sudo tee /dev/stderr
    exit 1
fi

nginx_conf=/etc/nginx/conf.d/$domain.d/$app.conf
if [ -f $nginx_conf ]; then
    echo "There is already a nginx conf file at this path: $nginx_conf " | sudo tee /dev/stderr
    exit 1
fi

# Run install script
# sudo bash -c "./install $domain $path $is_public $app"


# Path need a trailing slash, and location does not.
# See conf/nginx.conf* usage
location=$path
if [[ ! $path == */ ]]; then
    # no trailing slash, so add it
    path=$path/
fi
if [[ ! "$location" == "/" ]]; then
    # remove possible trailing slash
    location=${location%/}
fi

# Save specific settings
sudo yunohost app setting searx is_public -v $is_public

# Check depends installation
sudo apt-get install git build-essential libxslt-dev python-dev python-virtualenv python-pybabel zlib1g-dev libffi-dev libssl-dev python-lxml uwsgi uwsgi-plugin-python -y

# Check Swap
if [ $(sudo swapon -s | wc -l) = 1 ];
then
    # It is NOT possible to setup a swap file on a tmpfs filesystem
    mount | grep /tmp | grep tmpfs > /dev/null 2>&1
    if [ $? = 1 ];
    then
        tmp_swap_file=/tmp/searx_swapfile
    else
        tmp_swap_file=/var/cache/searx_swapfile
    fi
    sudo dd if=/dev/zero of=$tmp_swap_file bs=1M count=256
    sudo chmod 600 $tmp_swap_file
    sudo mkswap $tmp_swap_file
    sudo swapon $tmp_swap_file
fi

# Restore sources
final_path=/opt/yunohost/searx
sudo cp -a "./sources" $final_path

# Init virtualenv
sudo virtualenv --system-site-packages $final_path
sudo bash -c "source $final_path/bin/activate && pip install -r $final_path/requirements-ynh.txt"

# Disable swapfile
if [[ -v "$tmp_swap_file" ]];
then
    sudo swapoff $tmp_swap_file
    sudo rm -f $tmp_swap_file
fi

#Configuration Searx
sudo cp "./conf/settings.yml" "$final_path/searx/settings.yml"

# Set permissions to searx directory
sudo useradd searx -d $final_path
sudo chown searx:searx -R $final_path

# Copy uwsgi config
sudo cp "./conf/searx.ini" "/etc/uwsgi/apps-available/$app.ini"
sudo ln -s "/etc/uwsgi/apps-available/$app.ini" /etc/uwsgi/apps-enabled/

# Nginx conf
sudo cp "conf/nginx.conf" $nginx_conf

## Reload Nginx and regenerate SSOwat conf
sudo service nginx reload
sudo service uwsgi restart
sudo yunohost service add uwsgi -l /var/log/uwsgi/app/searx.log

if [ "$is_public" = "Yes" ];
then
    sudo yunohost app setting searx unprotected_uris -v "/"
fi
sudo yunohost app ssowatconf