#!/bin/bash

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

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

#=================================================
# STOP SYSTEMD SERVICE
#=================================================
ynh_script_progression "Stopping $app's systemd service..."

ynh_systemctl --service="$app.target" --action="stop"

#=================================================
# ENSURE DOWNWARD COMPATIBILITY
#=================================================
ynh_script_progression "Ensuring downward compatibility..."

if [ -e "$install_dir/.rvm" ]; then
    # migrate from rvm to rbenv
    ynh_script_progression "Remove rvm if needed..."
    ynh_exec_as_app --login rvm implode --force

    # remove old gpg keys for rvm
    if gpg --list-keys mpapis@gmail.com >/dev/null 2>&1; then
        ynh_exec_as_app gpg --delete-keys mpapis@gmail.com
        ynh_safe_rm "$install_dir/mpapis@gmail.com.pgp"
    fi
    if gpg --list-keys piotr.kuczynski@gmail.com >/dev/null 2>&1; then
        ynh_exec_as_app gpg --delete-keys piotr.kuczynski@gmail.com
        ynh_safe_rm "$install_dir/piotr.kuczynski@gmail.com.pgp"
    fi
fi

# Move from diaspora/ to live/
if ! [ -d "$install_dir/live" ]; then
    # NOTE if nobody never uploads anything, this won't exist yet
    # creating it anyway, it's simpler if we can assume it exists always
    # but we CANNOT assume it exists from previous version
    if [ -d "$install_dir/diaspora/public/uploads" ]; then
        mv "$install_dir/diaspora/public/uploads" "$install_dir/uploads"
    else
        mkdir "$install_dir/uploads"
    fi

    ynh_delete_file_checksum "$install_dir/diaspora/config/diaspora.yml"
    ynh_delete_file_checksum "$install_dir/diaspora/config/database.yml"
    mv "$install_dir/diaspora" "$install_dir/live"
    ynh_store_file_checksum "$install_dir/live/config/diaspora.yml"
    ynh_store_file_checksum "$install_dir/live/config/database.yml"
fi

ynh_safe_rm "$install_dir/Experimental_helpers"

# FIXMEhelpers2.1: maybe replace with: ynh_app_setting_set_default --key=admin --value=""
if [[ -z "${admin:-}" ]]; then
    admin=""
    ynh_app_setting_set --key=admin --value="$admin"
fi

admin_mail=$(ynh_user_get_info --username="$admin" --key=mail)

#=================================================
# INSTALL DEPENDENCIES
#=================================================
ynh_script_progression "Installing Ruby..."
ynh_ruby_install

ynh_script_progression "Installing NodeJS..."
ynh_nodejs_install

#=================================================
# DOWNLOAD, CHECK AND UNPACK SOURCE
#=================================================
ynh_script_progression "Upgrading source files..."

# Download, check integrity, uncompress and patch the source from app.src
ynh_setup_source --dest_dir="$install_dir/live" --full_replace --keep="config/diaspora.yml config/database.yml"

# create upload folder and link it
mkdir -p "$install_dir/uploads"
ln -s "$install_dir/uploads" "$install_dir/live/public"

#REMOVEME? Assuming the install dir is setup using ynh_setup_source, the proper chmod/chowns are now already applied and it shouldn't be necessary to tweak perms | chmod -R o-rwx "$install_dir"
#REMOVEME? Assuming the install dir is setup using ynh_setup_source, the proper chmod/chowns are now already applied and it shouldn't be necessary to tweak perms | chown -R "$app:www-data" "$install_dir"
#=================================================
# UPDATE A CONFIG FILE
#=================================================
ynh_script_progression "Updating configuration..."

ynh_config_add --template="diaspora.yml" --destination="$install_dir/live/config/diaspora.yml"
#REMOVEME? Assuming the file is setup using ynh_config_add, the proper chmod/chowns are now already applied and it shouldn't be necessary to tweak perms | chmod 400 "$install_dir/live/config/diaspora.yml"
#REMOVEME? Assuming the file is setup using ynh_config_add, the proper chmod/chowns are now already applied and it shouldn't be necessary to tweak perms | chown "$app:$app" "$install_dir/live/config/diaspora.yml"

ynh_config_add --template="database.yml" --destination="$install_dir/live/config/database.yml"
#REMOVEME? Assuming the file is setup using ynh_config_add, the proper chmod/chowns are now already applied and it shouldn't be necessary to tweak perms | chmod 400 "$install_dir/live/config/database.yml"
#REMOVEME? Assuming the file is setup using ynh_config_add, the proper chmod/chowns are now already applied and it shouldn't be necessary to tweak perms | chown "$app:$app" "$install_dir/live/config/database.yml"

#=================================================
# BUILD APP
#=================================================
ynh_script_progression "Building app..."

pushd "$install_dir/live"

    gem install "bundler:$bundler_version"
    ynh_hide_warnings ynh_exec_as_app ruby_load_path" "$ld_preload" script/configure_bundler
    ynh_hide_warnings ynh_exec_as_app ruby_load_path" "$ld_preload" bin/bundle install --full-index --with=postgresql
    ynh_hide_warnings ynh_exec_as_app RAILS_ENV=production ruby_load_path" "$ld_preload" bin/bundle exec rake db:migrate
    ynh_hide_warnings ynh_exec_as_app RAILS_ENV=production ruby_load_path" "$ld_preload" bin/rake assets:precompile
popd

#=================================================
# REAPPLY SYSTEM CONFIGURATIONS
#=================================================
ynh_script_progression "Upgrading system configurations related to $app..."

# Create a dedicated NGINX config
ynh_config_add_nginx

# Create a dedicated systemd config
ynh_config_add_systemd --service="${app}_sidekiq" --template="diaspora_sidekiq.service"
ynh_config_add_systemd --service="${app}_web" --template="diaspora_web.service"
# Create target unit
_ynh_add_systemd_target
yunohost service add "$app.target" --description "Diaspora service (unicorn web and sidekiq)" \
  --log "$install_dir/live/log/production.log" \
        "$install_dir/live/log/unicorn-stderr.log" \
        "$install_dir/live/log/unicorn-stdout.log" \
        "$install_dir/live/log/sidekiq.log"

# Create tmpfile
ynh_config_add --template="diaspora.tmpfiles.d" --destination="/etc/tmpfiles.d/${app}.conf"
systemd-tmpfiles --create

#=================================================
# START SYSTEMD SERVICE
#=================================================
ynh_script_progression "Starting $app's systemd service..."

systemctl restart "${app}.target"
ynh_systemctl --service="${app}_web.service" --action=restart --log_path="$install_dir/live/log/production.log" --wait_until="successfully configured the federation library"
ynh_systemctl --service="${app}_sidekiq.service" --action=restart --log_path="systemd" --wait_until="Running in ruby"

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

ynh_script_progression "Upgrade of $app completed"