#!/bin/bash

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

if [ ${PACKAGE_CHECK_EXEC:-0} -eq 1 ]; then
	sleep 60
fi

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

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

password="$YNH_APP_ARG_PASSWORD"
export=$YNH_APP_ARG_EXPORT
mypads=$YNH_APP_ARG_MYPADS
useldap=$YNH_APP_ARG_USELDAP

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

if [ "${#password}" -lt 8 ] || [ "${#password}" -gt 30 ]
then
	ynh_die --message="The password must be between 8 and 30 characters."
fi

#=================================================
# STORE SETTINGS FROM MANIFEST
#=================================================
ynh_script_progression --message="Storing installation settings..." --weight=3

ynh_app_setting_set --app=$app --key=mypads --value=$mypads
ynh_app_setting_set --app=$app --key=useldap --value=$useldap
ynh_app_setting_set --app=$app --key=overwrite_settings --value="1"
ynh_app_setting_set --app=$app --key=overwrite_credentials --value="1"
ynh_app_setting_set --app=$app --key=overwrite_nginx --value="1"
ynh_app_setting_set --app=$app --key=overwrite_systemd --value="1"

#=================================================
# INSTALL DEPENDENCIES
#=================================================
ynh_script_progression --message="Installing dependencies..." --weight=120

if [ "$export" = "abiword" ]; then
	ynh_exec_warn_less ynh_install_app_dependencies $abiword_app_depencencies
elif [ "$export" = "libreoffice" ]; then
	ynh_exec_warn_less ynh_install_app_dependencies $libreoffice_app_dependencies
fi

ynh_install_nodejs --nodejs_version=$nodejs_version
ynh_use_nodejs

#=================================================
# CREATE A MYSQL DATABASE
#=================================================
ynh_script_progression --message="Creating a MySQL database..." --weight=1

echo "ALTER DATABASE $db_name CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci" | ynh_mysql_connect_as --user=$db_user --password=$db_pwd --database=$db_name

#=================================================
# DOWNLOAD, CHECK AND UNPACK SOURCE
#=================================================
ynh_script_progression --message="Setting up source files..." --weight=4

# Download, check integrity, uncompress and patch the source from app.src
ynh_setup_source --dest_dir="$install_dir"

chmod 750 "$install_dir"
chmod -R o-rwx "$install_dir"
chown -R $app:$app "$install_dir"

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

# Create a dedicated NGINX config
ynh_add_nginx_config

#=================================================
# SPECIFIC SETUP
#=================================================
# HANDLE LOG FILES AND LOGROTATE
#=================================================
ynh_script_progression --message="Configuring log rotation..." --weight=1

# Create log directory
mkdir -p /var/log/$app
touch /var/log/$app/etherpad.log
chown $app -R /var/log/$app

#=================================================
# ADD A CONFIGURATION
#=================================================
ynh_script_progression --message="Adding a configuration file..." --weight=6

cp ../conf/settings.json "$install_dir/settings.json"

ynh_replace_string --match_string="__PORT__" --replace_string="$port" --target_file="$install_dir/settings.json"
if [ "$export" = "abiword" ]
then
	# Get Abiword binary path
	abiword_path=`which abiword`
	# Set the path of abiword into Etherpad config
	ynh_replace_string --match_string="\"abiword\" : null" --replace_string="\"abiword\" : \"$abiword_path\"" --target_file="$install_dir/settings.json"
elif [ "$export" = "libreoffice" ]
then
	# Get soffice binary path
	soffice_path=`which soffice`
	# Set the path of soffice into Etherpad config
	ynh_replace_string --match_string="\"soffice\" : null" --replace_string="\"soffice\" : \"$soffice_path\"" --target_file="$install_dir/settings.json"
fi
ynh_replace_string --match_string="__LANGUAGE__" --replace_string="$language" --target_file="$install_dir/settings.json"

# Use ldap for mypads
if [ $mypads -eq 1 ] && [ $useldap -eq 1 ]
then
	ynh_replace_string --match_string="//noldap\(.*\)" --replace_string="\1 //useldap" --target_file="$install_dir/settings.json"
fi

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

ynh_add_config --template="../conf/credentials.json" --destination="$install_dir/credentials.json"

chmod 600 "$install_dir/settings.json"
chown $app:$app "$install_dir/settings.json"

chmod 600 "$install_dir/credentials.json"
chown $app:$app "$install_dir/credentials.json"

#=================================================
# SETUP SYSTEMD
#=================================================
ynh_script_progression --message="Configuring a systemd service..." --weight=4

# Create a dedicated systemd config
ynh_add_systemd_config

#=================================================
# INSTALL ETHERPAD'S PLUGINS
#=================================================
ynh_script_progression --message="Installing Etherpad plugins..." --weight=90

pushd "$install_dir"
	# Add Left/Center/Right/Justify to lines of text in a pad
	ynh_exec_warn_less ynh_exec_as $app env $ynh_node_load_PATH $ynh_npm install --no-save ep_align@${ep_align_version}
	# Framapad - Adds author names to span titles
	ynh_exec_warn_less ynh_exec_as $app env $ynh_node_load_PATH $ynh_npm install --no-save ep_author_hover@${ep_author_hover_version}
	# Framapad - Adds comments on sidebar and link it to the text.
	ynh_exec_warn_less ynh_exec_as $app env $ynh_node_load_PATH $ynh_npm install --no-save ep_comments_page@${ep_comments_page_version}
	# Framapad - Displays paragraphs, sentences, words and characters counts.
	ynh_exec_warn_less ynh_exec_as $app env $ynh_node_load_PATH $ynh_npm install --no-save ep_countable@${ep_countable_version}
	# Framapad - Delete pads which were never edited
	ynh_exec_warn_less ynh_exec_as $app env $ynh_node_load_PATH $ynh_npm install --no-save ep_delete_empty_pads@${ep_delete_empty_pads_version}
	# Framapad - Apply colors to fonts
	ynh_exec_warn_less ynh_exec_as $app env $ynh_node_load_PATH $ynh_npm install --no-save ep_font_color@${ep_font_color_version}
	# Framapad - Adds heading support to Etherpad Lite.
	ynh_exec_warn_less ynh_exec_as $app env $ynh_node_load_PATH $ynh_npm install --no-save ep_headings2@${ep_headings2_version}
	# Framapad - Edit and Export as Markdown in Etherpad
	ynh_exec_warn_less ynh_exec_as $app env $ynh_node_load_PATH $ynh_npm install --no-save ep_markdown@${ep_markdown_version}
	if [ $mypads -eq 1 ]; then
		# Framapad - Groups and private pads for Etherpad
		ynh_exec_warn_less ynh_exec_as $app env $ynh_node_load_PATH $ynh_npm install --no-save ep_mypads@${mypads_version}
	fi
	# Framapad - Add support to do 'Spell checking'
	ynh_exec_warn_less ynh_exec_as $app env $ynh_node_load_PATH $ynh_npm install --no-save ep_spellcheck@${ep_spellcheck_version}
	# Framapad - Add support for Subscript and Superscript
	ynh_exec_warn_less ynh_exec_as $app env $ynh_node_load_PATH $ynh_npm install --no-save ep_subscript_and_superscript@${ep_subscript_and_superscript_version}
	# Framapad - View a table of contents for your pad
	ynh_exec_warn_less ynh_exec_as $app env $ynh_node_load_PATH $ynh_npm install --no-save ep_table_of_contents@${ep_table_of_contents_version}
	# Framapad - User Pad Contents font size can be set in settings, this does not effect other peoples views
	ynh_exec_warn_less ynh_exec_as $app env $ynh_node_load_PATH $ynh_npm install --no-save ep_font_size@${ep_font_size_version}
popd

#=================================================
# INSTALL ETHERPAD
#=================================================
ynh_script_progression --message="Installing Etherpad..." --weight=90

pushd $install_dir
 	ynh_exec_warn_less ynh_exec_as $app env $ynh_node_load_PATH bin/installDeps.sh
popd

#=================================================
# SOME HACKS
#=================================================

if [ $mypads -eq 1 ]
then
	ynh_script_progression --message="Some hacks..." --weight=1

	# Add a link to Etherpad to allow anonymous pads creation from MyPads.
	ynh_replace_string --match_string="^ *\"DESCRIPTION\": .*</ul>" --replace_string="&<a href=../>Pads anonymes</a>" --target_file=$install_dir/node_modules/ep_mypads/static/l10n/fr.json
	ynh_replace_string --match_string="^ *\"DESCRIPTION\": .*</ul>" --replace_string="&<a href=../>Anonymous pads</a>" --target_file=$install_dir/node_modules/ep_mypads/static/l10n/en.json
	# And a link to etherpad admin from Mypads.
	ynh_replace_string --match_string="^ *\"FOOTER\": .*2.0" --replace_string="& | <a href='../admin'>Etherpad admin</a>" --target_file=$install_dir/node_modules/ep_mypads/static/l10n/en.json
	ynh_replace_string --match_string="^ *\"FOOTER\": .*2.0" --replace_string="& | <a href='../admin'>Etherpad admin</a>" --target_file=$install_dir/node_modules/ep_mypads/static/l10n/fr.json

	# Find the /div just after the field to open a pad in order to add a link to MyPads plugin.
	sed -i '157i<center><br><font size="4"><a href="./mypads/" style="text-decoration: none; color: #555">MyPads</a></font></center>' $install_dir/src/templates/index.html
fi

#=================================================
# GENERIC FINALIZATION
#=================================================
# SETUP LOGROTATE
#=================================================
ynh_script_progression --message="Configuring log rotation..." --weight=1

# Use logrotate to manage application logfile(s)
ynh_use_logrotate --specific_user=$app/$app

#=================================================
# INTEGRATE SERVICE IN YUNOHOST
#=================================================
ynh_script_progression --message="Integrating service in YunoHost..." --weight=2

yunohost service add $app --description="Collaborative editor" --log="/var/log/$app/etherpad.log"

#=================================================
# START SYSTEMD SERVICE
#=================================================
ynh_script_progression --message="Starting a systemd service..." --weight=20

# Start a systemd service
ynh_systemd_action --service_name=$app --action=restart --line_match="You can access your Etherpad instance at" --log_path="/var/log/$app/etherpad.log" --timeout="120"

if [ $mypads -eq 1 ]
then
	ynh_replace_string --match_string="__LANGUAGE__" --replace_string="$language" --target_file="../conf/lang_mypads.sql"
	ynh_mysql_connect_as --user=$db_user --password=$db_pwd --database=$db_name < "../conf/lang_mypads.sql"

	# Wait for etherpad to be fully started
	ynh_systemd_action --action=restart --line_match="You can access your Etherpad instance at" --log_path="/var/log/$app/etherpad.log" --timeout="120"
fi

#=================================================
# SETUP FAIL2BAN
#=================================================
ynh_script_progression --message="Configuring Fail2Ban..." --weight=13

# Create a dedicated Fail2Ban config
ynh_add_fail2ban_config --logpath="/var/log/nginx/$domain-access.log" --failregex="<HOST> .* .POST /mypads/api/auth/login HTTP/1.1. 400" --max_retry=5

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

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