#!/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=$YNH_APP_ARG_DOMAIN
path_url="/"
admin=$YNH_APP_ARG_ADMIN
is_public=$YNH_APP_ARG_IS_PUBLIC

app=$YNH_APP_INSTANCE_NAME

admin_mail=$(ynh_user_get_info $admin 'mail')
admin_token=$(ynh_string_random --length=48 | base64)

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

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_script_progression --message="Storing installation settings..." --weight=2

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=$app --key=admin_token --value=$admin_token

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

# Find a free port
websocket_port=$(ynh_find_port --port=3012)
ynh_app_setting_set --app=$app --key=websocket_port --value=$websocket_port

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

#=================================================
# INSTALL DEPENDENCIES
#=================================================
ynh_script_progression --message="Installing dependencies..." --weight=10

ynh_install_app_dependencies $pkg_dependencies

#=================================================
# DOWNLOAD, CHECK AND UNPACK SOURCE
#=================================================
ynh_script_progression --message="Setting up source files..." --weight=3

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

# Download, check integrity, uncompress the source of bitwarden_rs from app.src to his build directory
ynh_setup_source --dest_dir="$final_path/build/" --source_id=app

# Download, check integrity, uncompress and patch the source from web.src
ynh_setup_source --dest_dir="$final_path/live/web-vault/" --source_id=web

#=================================================
# NGINX CONFIGURATION
#=================================================
ynh_script_progression --message="Configuring nginx web server..." --weight=2

# Create a dedicated nginx config
ynh_add_nginx_config "websocket_port rocket_port"

#=================================================
# CREATE DEDICATED USER
#=================================================
ynh_script_progression --message="Configuring system user..." --weight=2

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

#=================================================
# SPECIFIC SETUP
#=================================================
# MAKE INSTALL
#=================================================
ynh_script_progression --message="Making install..." --weight=780

# Set right permissions 
chown -R "$app":"$app" $final_path

# Install rustup with the toolchain needed by bitwarden_rs
pushd $final_path
    sudo -u "$app" RUSTUP_HOME=$final_path/.rustup CARGO_HOME=$final_path/.cargo bash -c 'curl -sSf -L https://static.rust-lang.org/rustup.sh | sh -s -- -y --default-toolchain=$(cat build/rust-toolchain)'
popd

export PATH="$PATH:$final_path/.cargo/bin:$final_path/.local/bin:/usr/local/sbin" 

# Compile bitwarden_rs
pushd $final_path/build
    sudo -u "$app" env PATH=$PATH cargo build --release
popd

# Install bitwarden_rs
cp -a $final_path/build/target/release/. $final_path/live/.

# Remove build files and rustup
ynh_secure_remove --file="$final_path/build"
ynh_secure_remove --file="$final_path/.cargo"
ynh_secure_remove --file="$final_path/.rustup"

#=================================================
# SETUP SYSTEMD
#=================================================
ynh_script_progression --message="Configuring a systemd service..." --weight=2

# Create a dedicated systemd config
ynh_add_systemd_config

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

config="$final_path/live/bitwarden_rs.env"

cp -f ../conf/bitwarden_rs.env "$config"

ynh_replace_string --match_string="__ADMIN_TOKEN__" --replace_string="$admin_token" --target_file="$config"
ynh_replace_string --match_string="__DOMAIN__" --replace_string="$domain" --target_file="$config"
ynh_replace_string --match_string="__WEBSOCKET_PORT__" --replace_string="$websocket_port" --target_file="$config"
ynh_replace_string --match_string="__ROCKET_PORT__" --replace_string="$rocket_port" --target_file="$config"
ynh_replace_string --match_string="__APP__" --replace_string="$app" --target_file="$config"

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

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

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

# Set permissions to app files
chown -R "$app":"$app" $final_path
mkdir -p "/var/log/$app"
chown -R "$app":"$app" "/var/log/$app"

#=================================================
# SETUP LOGROTATE
#=================================================
ynh_script_progression --message="Configuring log rotation..." --weight=2

# Use logrotate to manage application logfile(s)
ynh_use_logrotate

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

yunohost service add $app --description "$app daemon for Bitwarden" --log "/var/log/$app/$app.log"

#=================================================
# START SYSTEMD SERVICE
#=================================================
ynh_script_progression --message="Starting a systemd service..." --weight=2

# Start a systemd service
ynh_systemd_action --service_name=$app --action="start" --log_path="systemd" --line_match="Rocket has launched from"

#=================================================
# SETUP FAIL2BAN
#=================================================
ynh_script_progression --message="Configuring fail2ban..." --weight=5

# Create a dedicated fail2ban config
touch /var/log/$app/$app.log
ynh_add_fail2ban_config --logpath="/var/log/$app/$app.log" --failregex="^.*Username or password is incorrect\. Try again\. IP: <HOST>\. Username:.*$"

#=================================================
# SETUP SSOWAT
#=================================================
ynh_script_progression --message="Configuring SSOwat..." --weight=1

# 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

#=================================================
# SEND A README FOR THE ADMIN
#=================================================
ynh_script_progression --message="Sending a readme for the admin..." --weight=17

ynh_replace_string --match_string="__ADMIN_MAIL__"    --replace_string="$admin_mail"    --target_file="../conf/message"
ynh_replace_string --match_string="__ADMIN_TOKEN__"    --replace_string="$admin_token"    --target_file="../conf/message"
ynh_replace_string --match_string="__DOMAIN__"    --replace_string="$domain"    --target_file="../conf/message"

ynh_send_readme_to_admin --app_message="../conf/message" --recipients=$admin_mail --type='install'

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

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