#!/bin/bash

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

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

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

ynh_clean_setup () {
	ynh_clean_check_starting
}
# Exit if an error occurs during the execution of the script
ynh_abort_if_errors

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

domain=$YNH_APP_ARG_DOMAIN
path_url=$YNH_APP_ARG_PATH
is_public=$YNH_APP_ARG_IS_PUBLIC
admin=$YNH_APP_ARG_ADMIN
enable_terminal=$YNH_APP_ARG_ENABLE_TERMINAL

app=$YNH_APP_INSTANCE_NAME

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

final_path=/opt/$app
test ! -e "$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=$app --key=admin --value=$admin
ynh_app_setting_set --app=$app --key=is_public --value=$is_public
ynh_app_setting_set --app=$app --key=enable_terminal --value=$enable_terminal

#=================================================
# STANDARD MODIFICATIONS
#=================================================
# FIND AND OPEN A PORT
#=================================================
ynh_script_progression --message="Configuring firewall..." --weight=1

# Find a free port
port=$(ynh_find_port --port=8080)
port_hub=$(ynh_find_port --port=$(($port + 1)))
port_http_proxy=$(ynh_find_port --port=$(($port_hub + 1)))

# Open this port
#ynh_exec_warn_less yunohost firewall allow --no-upnp TCP $port
#ynh_exec_warn_less yunohost firewall allow --no-upnp TCP $port_hub
#ynh_exec_warn_less yunohost firewall allow --no-upnp TCP $port_http_proxy
ynh_app_setting_set --app=$app --key=port --value=$port
ynh_app_setting_set --app=$app --key=port_hub --value=$port_hub
ynh_app_setting_set --app=$app --key=port_http_proxy --value=$port_http_proxy

#=================================================
# INSTALL DEPENDENCIES
#=================================================
ynh_script_progression --message="Installing dependencies..." --weight=23

ynh_install_app_dependencies $pkg_dependencies

ynh_exec_warn_less ynh_install_nodejs --nodejs_version=8

python3 -m pip install pipenv

npm install -g configurable-http-proxy

#=================================================
# DOWNLOAD, CHECK AND UNPACK SOURCE
#=================================================
ynh_script_progression --message="Setting up source files..." --weight=64

ynh_app_setting_set --app=$app --key=final_path --value=$final_path

source ./upgrade.d/upgrade.sh

mkdir -p $final_path

pushd $final_path

PIPENV_VENV_IN_PROJECT="enabled" PIPENV_SKIP_LOCK=true  ynh_exec_warn_less python3 -m pipenv install jupyterlab==$jupyterlab_version jupyterhub notebook jupyterhub-ldapauthenticator --three

popd

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

# Create a dedicated nginx config
ynh_add_nginx_config

#=================================================
# SPECIFIC SETUP
#=================================================
# SETUP SYSTEMD
#=================================================
ynh_script_progression --message="Configuring a systemd service..." --weight=3

# Create a dedicated systemd config
ynh_replace_string --match_string="__NODE_PATH__" --replace_string="$nodejs_path" --target_file="../conf/systemd.service"

ynh_add_systemd_config

#=================================================
# MODIFY A CONFIG FILE
#=================================================

mkdir -p "$final_path/config"

# JupyterHub configuration
cp -f ../conf/jupyterhub_config.py $final_path/config/jupyterhub_config.py

ynh_replace_string --match_string="__URL__" --replace_string="https://$domain" --target_file="$final_path/config/jupyterhub_config.py"
ynh_replace_string --match_string="__PATH__" --replace_string="${path_url%/}" --target_file="$final_path/config/jupyterhub_config.py"
ynh_replace_string --match_string="__PORT__" --replace_string="$port" --target_file="$final_path/config/jupyterhub_config.py"
ynh_replace_string --match_string="__PORT_HUB__" --replace_string="$port_hub" --target_file="$final_path/config/jupyterhub_config.py"
ynh_replace_string --match_string="__PORT_HTTP_PROXY__" --replace_string="$port_http_proxy" --target_file="$final_path/config/jupyterhub_config.py"
ynh_replace_string --match_string="__FINAL_PATH__" --replace_string="$final_path" --target_file="$final_path/config/jupyterhub_config.py"
ynh_replace_string --match_string="__ADMIN__" --replace_string="$admin" --target_file="$final_path/config/jupyterhub_config.py"

# Jupyter notebook configuration
cp -f ../conf/jupyter_notebook_config.py $final_path/config/jupyter_notebook_config.py

ynh_replace_string --match_string="__ENABLE_TERMINAL__" --replace_string="$enable_terminal" --target_file="$final_path/config/jupyter_notebook_config.py"

#=================================================
# STORE THE CONFIG FILE CHECKSUM
#=================================================

# Calculate and store the config file checksum into the app settings
ynh_store_file_checksum --file="$final_path/config/jupyterhub_config.py"
ynh_store_file_checksum --file="$final_path/config/jupyter_notebook_config.py"

#=================================================
# GENERIC FINALIZATION
#=================================================
# SECURE FILES AND DIRECTORIES
#=================================================

# Set permissions to app files
chown -R root: $final_path/
chown -R $admin: $final_path/.venv/lib

#=================================================
# ADVERTISE SERVICE IN ADMIN PANEL
#=================================================

yunohost service add $app --description "$app daemon" --log_type "systemd" --log "$app"

#=================================================
# START SYSTEMD SERVICE
#=================================================
ynh_script_progression --message="Starting a systemd service..." --weight=3

# Start a systemd service
ynh_systemd_action --service_name=$app --action="start" --line_match="JupyterHub is now running at" --log_path="systemd"

#=================================================
# SETUP SSOWAT
#=================================================
ynh_script_progression --message="Configuring SSOwat..." --weight=4

# Make app public if necessary
if [ $is_public -eq 1 ]
then
	# unprotected_uris allows SSO credentials to be passed anyway.
	ynh_app_setting_set --app=$app --key=unprotected_uris --value="/"
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