#!/bin/bash

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

source ynh_add_extra_apt_repos__3
source /usr/share/yunohost/helpers

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

# 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

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

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

port=$(ynh_find_port 3000)

db_user=$app
db_name=$app
db_pass=$(ynh_string_random 20)

#=================================================
# STORE SETTINGS FROM MANIFEST
#=================================================
ynh_script_progression --message="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" port "$port"
ynh_app_setting_set "$app" db_pass "$db_pass"
ynh_app_setting_set "$app" final_path "$final_path"

#==============================================
# INSTALL POSTGRES
#==============================================
ynh_script_progression --message="Installing dependencies..."

ynh_install_app_dependencies postgresql apt-transport-https

# Install Yarn
ynh_install_extra_app_dependencies --repo="deb https://dl.yarnpkg.com/debian/ stable main" --package="yarn" --key="https://dl.yarnpkg.com/debian/pubkey.gpg"

ynh_install_nodejs 8

#==============================================
# CREATE DB
#==============================================
ynh_script_progression --message="Creating a database..."

ynh_psql_test_if_first_run
ynh_psql_setup_db --db_user="$db_user" --db_name="$db_name" --db_pwd="$db_pass"

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

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

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

# Main config File
ynh_replace_string "__PORT__"      "$port"         "../conf/config.json.example"
ynh_replace_string "__DOMAIN__"    "$domain"       "../conf/config.json.example"
ynh_replace_string "__PATH__"      "${path_url:1}" "../conf/config.json.example"
ynh_replace_string "__DB_USER__"   "$db_user"      "../conf/config.json.example"
ynh_replace_string "__DB_NAME__"   "$db_name"      "../conf/config.json.example"
ynh_replace_string "__DB_PASS__"   "$db_pass"      "../conf/config.json.example"
cp ../conf/config.json.example "$final_path"/config.json
ynh_store_file_checksum "$final_path/config.json"

# DB Config File
ynh_replace_string "__DB_USER__" "$db_user" "../conf/.sequelizerc.example"
ynh_replace_string "__DB_NAME__" "$db_name" "../conf/.sequelizerc.example"
ynh_replace_string "__DB_PASS__" "$db_pass" "../conf/.sequelizerc.example"
cp ../conf/.sequelizerc.example "$final_path"/.sequelizerc

#==============================================
# INSTALL CODIMD
#==============================================
ynh_script_progression --message="Building application... (this may take some time and resources!)"

pushd "$final_path" || exit
./bin/setup
yarn run build
#node_modules/.bin/sequelize db:migrate
popd || exit

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

# Create a dedicated nginx config
ynh_add_nginx_config

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

# Create a system user
ynh_system_user_create "$app"
chown -R "$app":"$app" "$final_path"

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

ynh_replace_string "__APP__"       "$app"         "../conf/systemd.service"
ynh_replace_string "__FINALPATH__" "$final_path"  "../conf/systemd.service"
ynh_replace_string "__ENV_PATH__"  "$PATH"        "../conf/systemd.service"
ynh_replace_string "__NODE__"      "$nodejs_path" "../conf/systemd.service"
ynh_add_systemd_config

yunohost service add "$app" --description "CodiMD daemon"

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

ynh_script_progression --message="Starting $app..."

ynh_systemd_action --service_name="$app" --action="start"

#=================================================
# SETUP SSOWAT
#=================================================

ynh_script_progression --message="Configuring SSOwat..."

# If app is public, add url to SSOWat conf as skipped_uris
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_script_progression --message="Reloading nginx web server..."

ynh_systemd_action --service_name=nginx --action=reload

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

ynh_script_progression --message="Installation of $app completed" --last