#!/bin/bash

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

source _common.sh
source ynh_ruby
source ynh_add_swap
source /usr/share/yunohost/helpers

#=================================================
# INSTALL DEPENDENCIES
#=================================================
ynh_script_progression --message="Installing Ruby..." --weight=1

ynh_exec_warn_less ynh_install_ruby --ruby_version="$RUBY_VERSION"

#=================================================
# ADD SWAP IF NEEDED
#=================================================
ynh_script_progression --message="Adding swap if needed..."

total_memory=$(ynh_get_ram --total)
swap_needed=0

if (( MEMORY_NEEDED > total_memory )); then
    # Need a minimum of 2.5Go of memory
    swap_needed=$((MEMORY_NEEDED - total_memory))
fi

ynh_script_progression --message="Adding $swap_needed Mo to swap..."
ynh_add_swap --size=$swap_needed

#=================================================
# CREATE A POSTGRESQL DATABASE
#=================================================
ynh_script_progression --message="Setting the PostgreSQL database..."

ynh_psql_execute_as_root --sql="CREATE EXTENSION IF NOT EXISTS hstore;" --database="$db_name"
ynh_psql_execute_as_root --sql="CREATE EXTENSION IF NOT EXISTS pg_trgm;" --database="$db_name"

#=================================================
# DOWNLOAD, CHECK AND UNPACK SOURCE
#=================================================
ynh_script_progression --message="Setting up source files..." --weight=1

ynh_setup_source --dest_dir="$install_dir"

mkdir -p "$install_dir/tmp/pids"

chmod -R o-rwx "$install_dir"
chown -R "$app:www-data" "$install_dir"

#=================================================
# ADD A CONFIGURATION
#=================================================
ynh_script_progression --message="Adding a configuration file..." --weight=1

ynh_add_config --template="database.yml.example" --destination="$install_dir/config/database.yml"
ynh_add_config --template="diaspora.toml.example" --destination="$install_dir/config/diaspora.toml"

chmod 400 "$install_dir/config/database.yml"
chmod 400 "$install_dir/config/diaspora.toml"
chown "$app:$app" "$install_dir/config/database.yml"
chown "$app:$app" "$install_dir/config/diaspora.toml"

#=================================================
# INSTALLING RUBY AND BUNDLER
#=================================================
ynh_script_progression --message="Building $app..."

pushd "$install_dir"
    ynh_use_ruby
    ynh_gem install bundler:1.17.3 --no-document
    ynh_exec_as "$app" echo "gem: --no-ri --no-rdoc" >> "$install_dir/.gemrc"
    ynh_exec_as "$app" chmod +x script/server

    ynh_exec_warn_less ynh_exec_as "$app" "$ynh_ruby_load_path" script/configure_bundler
    ynh_exec_warn_less ynh_exec_as "$app" "$ynh_ruby_load_path" bin/bundle config set path 'vendor/bundle'
    ynh_exec_warn_less ynh_exec_as "$app" "$ynh_ruby_load_path" bin/bundle install --full-index
popd

ynh_script_progression --message="Preparing the database and create initial admin user..."

pushd "$install_dir"
    ynh_exec_warn_less ynh_exec_as "$app" "$ynh_ruby_load_path" RAILS_ENV=production bin/rake db:migrate
    ynh_exec_warn_less ynh_exec_as "$app" "$ynh_ruby_load_path" RAILS_ENV=production bin/rake assets:precompile
    ynh_exec_warn_less ynh_exec_as "$app" "$ynh_ruby_load_path" RAILS_ENV=production bin/rake "admin:create[$admin, $email, $password]"
popd

#=================================================
# SYSTEM CONFIGURATION
#=================================================
ynh_script_progression --message="Adding system configurations related to $app..." --weight=1

ynh_add_nginx_config

ynh_add_systemd_config --service="$app-web" --template="$app-web.service"
yunohost service add "$app-web" --description="$app web service"

ynh_add_systemd_config --service="$app-sidekiq" --template="$app-sidekiq.service"
yunohost service add "$app-sidekiq" --description="$app sidekiq service"

# Use logrotate to manage application logfile(s)
ynh_use_logrotate

#=================================================
# START SYSTEMD SERVICE
#=================================================
ynh_script_progression --message="Starting a systemd service..." --weight=1

ynh_systemd_action --service_name="${app}-web" --action="start" --log_path=systemd --line_match="listening on"
ynh_systemd_action --service_name="${app}-sidekiq" --action="start" --log_path=systemd --line_match="Booted Rails"

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

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