#!/bin/bash

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

source _common.sh
source ynh_send_readme_to_admin__2
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=$YNH_APP_ARG_DOMAIN
path_url="/"
is_public=$YNH_APP_ARG_IS_PUBLIC

app=$YNH_APP_INSTANCE_NAME

ldap_user="svc_${app}_ldap"
ldap_password=$(ynh_string_random --length=8)

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

final_path=/var/www/$app
test ! -e "$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_print_info --message="Storing installation settings..."

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=$app --key=is_public --value=$is_public

ynh_app_setting_set --app=$app --key=ldap_user --value=$ldap_user
ynh_app_setting_set --app=$app --key=ldap_password --value=$ldap_password

#=================================================
# STANDARD MODIFICATIONS
#=================================================
# FIND AND OPEN A PORT
#=================================================
ynh_print_info --message="Configuring firewall..."

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

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

ynh_install_nodejs --nodejs_version="10"
ynh_install_app_dependencies $pkg_dependencies

#=================================================
# CREATE A POSTGRESQL DATABASE
#=================================================
ynh_print_info --message="Creating a PostgreSQL database..."

db_name=$(ynh_sanitize_dbid --db_name=$app)
db_user=$db_name
db_pwd=$(ynh_string_random --length=30)
ynh_app_setting_set --app=$app --key=db_name --value=$db_name
ynh_app_setting_set --app=$app --key=db_pwd --value=$db_pwd
ynh_psql_test_if_first_run
ynh_psql_setup_db --db_user=$db_user --db_name=$db_name --db_pwd=$db_pwd

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

ynh_app_setting_set --app=$app --key=final_path --value=$final_path
# Download, check integrity, uncompress and patch the source from app.src
ynh_setup_source --dest_dir="$final_path"

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

# Create a dedicated nginx config
ynh_add_nginx_config

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

# Create a system user
ynh_system_user_create --username=$app --home_dir="$final_path"

#=================================================
# SPECIFIC SETUP
#=================================================
# CREATE LDAP USER
#=================================================
ynh_print_info --message="Creating LDAP user..."

yunohost user create $ldap_user --firstname "SvcWikijsLdap" --lastname "SvcWikijsLdap" --mail ${ldap_user}@$domain --password $ldap_password -q 0

#=================================================
# SETUP SYSTEMD
#=================================================
ynh_print_info --message="Configuring a systemd service..."

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

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

config_file="$final_path/config.yml"
cp -f ../conf/config.sample.yml $config_file

ynh_replace_string --match_string="__PORT__" --replace_string="$port" --target_file="$config_file"
ynh_replace_string --match_string="__DB_PWD__" --replace_string="$db_pwd" --target_file="$config_file"
ynh_replace_string --match_string="__DB_NAME__" --replace_string="$db_name" --target_file="$config_file"

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

# Calculate and store the config file checksum into the app settings
ynh_store_file_checksum --file="$config_file"

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

# Set permissions to app files
chown -R "$app":"$app" "$final_path"

#=================================================
# INTEGRATE SERVICE IN YUNOHOST
#=================================================

# if using yunohost version 3.2 or more in the 'manifest.json', a description can be added
yunohost service add $app --description "$app daemon for Wiki.js" --log_type systemd

#=================================================
# START SYSTEMD SERVICE
#=================================================

ynh_systemd_action --service_name=$app --action="start" --log_path=systemd --line_match="HTTP Server:"

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

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

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

ynh_systemd_action --service_name=nginx --action=reload

#=================================================
# SEND README TO ADMIN
#=================================================
ynh_print_info --message="Sending ReadMe to admin..."

ynh_replace_string --match_string="__LDAP_USER__"    --replace_string="$ldap_user"    --target_file="../conf/ldap_message"
ynh_replace_string --match_string="__LDAP_PASSWORD__"    --replace_string="$ldap_password"    --target_file="../conf/ldap_message"
ynh_replace_string --match_string="__DOMAIN__"    --replace_string="$domain"    --target_file="../conf/ldap_message"
ynh_replace_string --match_string="__PATH_URL__"    --replace_string="$path_url"    --target_file="../conf/ldap_message"

ynh_send_readme_to_admin --app_message="../conf/ldap_message" --recipients="root" --type='install'

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

ynh_print_info --message="Installation of $app completed"