#!/bin/bash

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

source _common.sh
source ynh_systemd_action
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

#=================================================
# CHECK IF THE APP CAN BE INSTALLED WITH THESE ARGS
#=================================================
ynh_print_info "Validating installation parameters..."

# Check machine architecture (in particular, we don't support ARM and 32bit machines)
[[ $(uname -m) == "x86_64" ]] || ynh_die "Sorry, but this app can only be installed on a x86, 64 bits machine :("

### If the app uses nginx as web server (written in HTML/PHP in most cases), the final path should be "/var/www/$app".
### If the app provides an internal web server (or uses another application server such as uwsgi), the final path should be "/opt/yunohost/$app"
final_path=/var/www/$app
test ! -e "$final_path" || ynh_die "This path already contains a folder"

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

#=================================================
# STORE SETTINGS FROM MANIFEST
#=================================================
ynh_print_info "Storing installation settings..."

ynh_app_setting_set $app domain $domain
ynh_app_setting_set $app path $path_url
ynh_app_setting_set $app is_public $is_public
ynh_app_setting_set $app final_path $final_path

# Find a free port
port=$(ynh_find_port 8095)
ynh_app_setting_set $app port $port

# Registering db name
db_name=$(ynh_sanitize_dbid $app)
ynh_app_setting_set $app db_name $db_name

#=================================================
# INSTALL DEPENDENCIES
#=================================================
ynh_print_info "Installing dependencies..."

ynh_print_info "Installing nodejs ..."
ynh_install_nodejs 8.9.3

ynh_print_info "Installing mongodb dependencies ..."
ynh_install_app_dependencies "mongodb mongodb-server"

#=================================================
# Start MONGODB
#=================================================

# Start mogodb
ynh_print_info "Starting mongodb ..."
systemctl enable mongodb
systemctl restart mongodb

#=================================================
# DOWNLOAD, CHECK AND UNPACK SOURCE
#=================================================
ynh_print_info "Setting up wekan source files..."

### `ynh_setup_source` is used to install an app from a zip or tar.gz file,
### downloaded from an upstream source, like a git repository.
### `ynh_setup_source` use the file conf/app.src

# Download, check integrity, uncompress and patch the source from app.src
ynh_setup_source "$final_path"

ynh_print_info "Installing wekan npm dependencies ..."

# Install wekan dependencies
chown -R $app $final_path
pushd $final_path/programs/server
    ynh_use_nodejs
    npm install
popd

#=================================================
# NGINX CONFIGURATION
#=================================================
ynh_print_info "Configuring nginx web server..."

### `ynh_add_nginx_config` will use the file conf/nginx.conf

# Create a dedicated nginx config
ynh_add_nginx_config

#=================================================
# CREATE DEDICATED USER
#=================================================
ynh_print_info "Configuring system user..."

# Create a system user
ynh_system_user_create $app "$final_path"

#=================================================
# SPECIFIC SETUP
#=================================================
# SETUP SYSTEMD
#=================================================
ynh_print_info "Configuring a systemd service..."

### `ynh_systemd_config` is used to configure a systemd script for an app.
### It can be used for apps that use sysvinit (with adaptation) or systemd.
### Have a look at the app to be sure this app needs a systemd script.
### `ynh_systemd_config` will use the file conf/systemd.service
### If you're not using these lines:
###		- You can remove those files in conf/.
###		- Remove the section "BACKUP SYSTEMD" in the backup script
###		- Remove also the section "STOP AND REMOVE SERVICE" in the remove script
###		- As well as the section "RESTORE SYSTEMD" in the restore script
###		- And the section "SETUP SYSTEMD" in the upgrade script

# Create a dedicated systemd config
ynh_print_info "Adding wekan systemd service ..."
ynh_replace_string "__ENV_PATH__" "$nodejs_path"               "../conf/systemd.service"
ynh_replace_string "__DB_NAME__"  "$db_name"                "../conf/systemd.service"
ynh_replace_string "__DOMAIN_URI__"      "$domain$path_url"          "../conf/systemd.service"
ynh_replace_string "__PORT__"     "$port"               "../conf/systemd.service"
ynh_add_systemd_config

#=================================================
# GENERIC FINALIZATION
#=================================================
# SECURE FILES AND DIRECTORIES
#=================================================
ynh_print_info "Configuring file permissions ..."

### For security reason, any app should set the permissions to root: before anything else.
### Then, if write authorization is needed, any access should be given only to directories
### that really need such authorization.
# Set strong right permissions to app files
chown -R $app: "$final_path"
chmod -R 640 "$final_path"
find "$final_path" -type d -print0 | xargs -0 chmod 750

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

### `yunohost service add` is a CLI yunohost command to add a service in the admin panel.
### You'll find the service in the 'services' section of YunoHost admin panel.
### This CLI command would be useless if the app does not have any services (systemd or sysvinit)
### If you're not using these lines:
###		- You can remove these files in conf/.
###		- Remove the section "REMOVE SERVICE FROM ADMIN PANEL" in the remove script
###		- As well as the section ADVERTISE SERVICE IN ADMIN PANEL" in the restore script

yunohost service add mongodb --log "/var/log/mongodb/mongodb.log"
yunohost service add $app

#=================================================
# SETUP SSOWAT
#=================================================
ynh_print_info "Configuring SSOwat..."

# 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 unprotected_uris "/"
fi

#=================================================
# RELOAD NGINX
#=================================================
ynh_print_info "Reloading nginx web server..."

systemctl reload nginx

#=================================================
# START SERVICE
#=================================================
ynh_print_info "Now starting Wekan service..."

ynh_systemd_action --action=start --service_name=$app --log_path="systemd" --line_match="Finishing add-custom-html-before-body-end migration"
sleep 10

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

ynh_print_info "Installation of $app completed"