#!/bin/bash

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

source _common.sh
source /usr/share/yunohost/helpers
source psql.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=$YNH_APP_ARG_DOMAIN
path_url="/"
admin=$YNH_APP_ARG_ADMIN
admin_email=$(ynh_user_get_info $admin 'mail')
is_public=$YNH_APP_ARG_IS_PUBLIC
random_key=$(ynh_string_random 64)


# 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 "$app" is_public   "$is_public"
ynh_app_setting_set "$app" random_key  "random_key"
ynh_app_setting_set "$app" admin       "$admin"

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

# Find a free port
port=$(ynh_find_port 4000)

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

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

# Add erlang for Debian Jessie 
if [ "$(lsb_release --codename --short)" == "jessie" ]; then
	echo "deb http://binaries.erlang-solutions.com/debian jessie contrib" | tee /etc/apt/sources.list.d/erlang-solutions.list
fi

echo "deb http://binaries.erlang-solutions.com/debian stretch contrib" | tee /etc/apt/sources.list.d/erlang-solutions.list

# install dependencies
ynh_install_app_dependencies git build-essential postgresql postgresql-contrib openssl g++ apt-transport-https erlang-inets elixir erlang-dev erlang-parsetools erlang-xmerl erlang-tools

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

# Create postgresql database
db_name="${app}"
db_pwd=$(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;"
ynh_psql_execute_as_root "\connect $db_name 
CREATE EXTENSION IF NOT EXISTS unaccent;CREATE EXTENSION IF NOT EXISTS pg_trgm;"
ynh_psql_execute_as_root "\connect $db_name 
CREATE EXTENSION IF NOT EXISTS unaccent;CREATE EXTENSION IF NOT EXISTS citext;"

#=================================================
# 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
git clone https://git.pleroma.social/pleroma/pleroma "$final_path"


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

# Create a dedicated nginx config
ynh_add_nginx_config

#=================================================
# MODIFY A CONFIG FILE
#=================================================
cp -f ../conf/prod.secret.exs "$final_path/config/prod.secret.exs"
cp -f ../conf/setup_db.psql "$final_path/config/setup_db.psql"

ynh_replace_string "__DOMAIN__"        "$domain"        "$final_path/config/prod.secret.exs"
ynh_replace_string "__KEY__"           "$random_key"    "$final_path/config/prod.secret.exs"
ynh_replace_string "__INSTANCE_NAME__" "$instance_name" "$final_path/config/prod.secret.exs"
ynh_replace_string "__DB_NAME__"       "$app"           "$final_path/config/prod.secret.exs"
ynh_replace_string "__DB_PWD__"        "$db_pwd"        "$final_path/config/prod.secret.exs"
ynh_replace_string "__ADMIN_EMAIL__"   "$admin_email"   "$final_path/config/prod.secret.exs"
ynh_replace_string "__PORT__"          "$port"          "$final_path/config/prod.secret.exs"
ynh_replace_string "__DB_NAME__"       "$app"           "$final_path/config/setup_db.psql"
ynh_replace_string "__DB_PWD__"        "$db_pwd"        "$final_path/config/setup_db.psql"

#=================================================
# SETUP
#=================================================


#=================================================
# 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

# Give permisiion to the final_path
chown -R "$app":"$app" "$final_path"

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

systemctl reload nginx