#!/bin/bash

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

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

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

# Exit if an error occurs during the execution of the script
ynh_abort_if_errors

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

domain=$YNH_APP_ARG_DOMAIN
path_url="/"
admin_email=$YNH_APP_ARG_EMAIL
admin_pass=$(ynh_string_random 24)
is_public=$YNH_APP_ARG_IS_PUBLIC


# This is a multi-instance app, meaning it can be installed several times independently
# The id of the app as stated in the manifest is available as $YNH_APP_ID
# The instance number is available as $YNH_APP_INSTANCE_NUMBER (equals "1", "2", ...)
# The app instance name is available as $YNH_APP_INSTANCE_NAME
#    - the first time the app is installed, YNH_APP_INSTANCE_NAME = ynhexample
#    - the second time the app is installed, YNH_APP_INSTANCE_NAME = ynhexample__2
#    - ynhexample__{N} for the subsequent installations, with N=3,4, ...
# The app instance name is probably what you are interested the most, since this is
# guaranteed to be unique. This is a good unique identifier to define installation path,
# db names, ...
app=$YNH_APP_INSTANCE_NAME

#=================================================
# CHECK IF THE APP CAN BE INSTALLED WITH THESE ARGS
#=================================================

final_path=/var/www/$app
test ! -e "$final_path" || ynh_die "This path already contains a folder"

# Check web path availability
ynh_webpath_available "$domain" "$path_url"
# Register (book) web path
ynh_webpath_register "$app" "$domain" "$path_url"

#=================================================
# STORE SETTINGS FROM MANIFEST
#=================================================

ynh_app_setting_set "$app" domain "$domain"
ynh_app_setting_set "$app" admin_email "$admin_email"
ynh_app_setting_set "$app" admin_pass "$admin_pass"
ynh_app_setting_set "$app" is_public "$is_public"

#=================================================
# STANDARD MODIFICATIONS
#=================================================
# FIND AND OPEN A PORT
#=================================================

# Find a free port
port=$(ynh_find_port 9000)

# Open this port
yunohost firewall allow Both "$port" 2>&1
ynh_app_setting_set "$app" port "$port"

#=================================================
# CREATE THE DATA DIRECTORY
#=================================================

# Define app's data directory
datadir="/home/yunohost.app/${app}/storage"
# Create app folders
mkdir -p "$datadir"

#=================================================
# INSTALL DEPENDENCIES
#=================================================

# install nodejs
ynh_install_nodejs 8

# install yarn
wget https://github.com/yarnpkg/yarn/releases/download/v1.5.1/yarn_1.5.1_all.deb
echo "a4770cd8dcb13dc9a9218940dbd24b510ddf5eec78adb4e0da9ef3760b55a76e yarn_1.5.1_all.deb" | sha256sum -c || ynh_die
dpkg -i yarn_1.5.1_all.deb

# add backports (required to install ffmpeg)
echo "deb http://httpredir.debian.org/debian jessie-backports main" | tee /etc/apt/sources.list.d/jessie-backports.list
ynh_package_update

# install postgresql, ffmpeg, redis
ynh_install_app_dependencies postgresql-9.4 ffmpeg redis-server redis-tools mailutils

#=================================================
# DATABASE SETUP
#=================================================

# Create postgresql database
db_name="peertube_${app}"
db_pwd=$(ynh_string_random 30)
ynh_app_setting_set "$app" psql_db "$db_name"
ynh_app_setting_set "$app" psqlpwd "$db_pwd"
ynh_psql_test_if_first_run
ynh_psql_create_user "$app" "$db_pwd"
ynh_psql_execute_as_root \
"CREATE DATABASE $db_name ENCODING 'UTF8' LC_COLLATE='C' LC_CTYPE='C' template=template0 OWNER "$app";"

#=================================================
# CREATE DEDICATED USER
#=================================================

# Create a system user
ynh_system_user_create "$app"

#=================================================
# DOWNLOAD, CHECK AND UNPACK PEERTUBE SOURCE
#=================================================

ynh_app_setting_set "$app" final_path "$final_path"
# Download, check integrity, uncompress and patch the source from app.src
ynh_setup_source "$final_path"
cp ../conf/production.yaml "$final_path/config/production.yaml"
touch "$final_path/config/local-production.json"
(cd "$final_path" && yarn install --production --pure-lockfile)

#=================================================
# NGINX CONFIGURATION
#=================================================

# Create a dedicated nginx config
mkdir -p "/etc/nginx/conf.d/${domain}.d"
ynh_add_nginx_config

#=================================================
# SETUP APPLICATION WITH CURL
#=================================================

# Set right permissions for curl install
chown -R "$app" "$datadir"

# Reload Nginx
systemctl reload nginx

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

ynh_replace_string "__domain__" "$domain" "$final_path/config/production.yaml"
ynh_replace_string "__db_name__" "$app" "$final_path/config/production.yaml"
ynh_replace_string "__app__" "$app" "$final_path/config/production.yaml"
ynh_replace_string "__db_pwd__" "$db_pwd" "$final_path/config/production.yaml"
ynh_replace_string "__email__" "$admin_email" "$final_path/config/production.yaml"
ynh_replace_string "__PORT__" "$port" "$final_path/config/production.yaml"


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

# Calculate and store the config file checksum into the app settings
ynh_store_file_checksum "$final_path/config/production.yaml"

#=================================================
# GENERIC FINALIZATION
#=================================================
#=================================================
# SETUP LOGROTATE
#=================================================

# Use logrotate to manage application logfile(s)
ynh_use_logrotate

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

if [ "$is_public" -eq 0 ]
then	# Remove the public access
	ynh_app_setting_delete "$app" skipped_uris
fi
# 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

#=================================================
# SETUP SYSTEMD
#=================================================

# Create a dedicated systemd config
ynh_add_systemd_config
systemctl start "$app"

#=================================================
# CHANGE PEERTUBE ADMIN PASSWORD AFTER INITIAL GEN
#=================================================

# we need to wait for the service to init peertube's database
(cd "/var/www/$app" && sleep 15 && exec /bin/sh -c "echo $admin_pass | NODE_CONFIG_DIR=/var/www/$app/config NODE_ENV=production PATH=/opt/node_n/bin:$PATH npm run reset-password -- -u root")

#=================================================
# RELOAD NGINX
#=================================================

systemctl reload nginx

#=================================================
# SEND A README FOR THE ADMIN
#=================================================

message="PeerTube was successfully installed :)

Please open "https://$domain$path_url"

Here is the admin password: "$admin_pass"

If you facing an issue or want to improve this app, please open a new issue in this project: https://github.com/YunoHost-Apps/peertube_ynh"

ynh_send_readme_to_admin "$message"