#!/bin/bash

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

source /usr/share/yunohost/helpers

# Stop script if errors
ynh_abort_if_errors
final_path=$(ynh_app_setting_get --app=$app --key=final_path)

get__max_upload_size() {
    max_upload_size=$(ynh_app_setting_get --app $app --key max_upload_size)
    echo "${max_upload_size}"
}

set__max_upload_size() { 
    ynh_write_var_in_file --file=/etc/matrix-$app/homeserver.yaml --key=max_upload_size --value="${max_upload_size}" 
    sed -i -r "s|client_max_body_size\s[[:digit:]]*[GMK]?;|client_max_body_size ${max_upload_size};|g" "/etc/nginx/conf.d/$domain.d/$app.conf"
    ynh_add_nginx_conf
}

get__registrations_require_3pid() {
    registrations_require_3pid=$(ynh_app_setting_get --app $app --key registrations_require_3pid)
    echo "${registrations_require_3pid}"
}

# set__registrations_require_3pid() this function is setting datas for registrations_require_3pid field and allowed_local_3pids_(email/msisdn)
# it consist on comment or not "registrations_require_3pid:", " - email" and/or " - msisdn"
# then depending on the "registrations_require_3pid" value it comment or not "allowed_local_3pids:" lines 
# and generate all it sub configuration :
#
# allowed_local_3pids:
#  - medium: email
#    pattern: *
#  ...
#  - medium: msisdn
#    pattern: *
#
# sed -z and \n as new line carracter do the trick on this kind of multline replacement.

set__registrations_require_3pid() { 

	# search pattern to replace (it correspond to the complete section)
	allowedLocal3pids="s;#?([^\S\n]*allowed_local_3pids:)\n(#?([^\S\n]*-[^\S\n]*medium:[^\S\n]*(email|msisdn)\n)#?([^\S\n]*pattern:[^\S\n]*[^\n]*\n))*;"
                         
	case ${registrations_require_3pid} in
		'email')
			# registrations_require_3pid: part
			sed -i -z -r "s|#?[^\S\n]*registrations_require_3pid:\n#?[^\S\n]*-[^\S\n]*email\n#?[^\S\n]*-[^\S\n]*msisdn|registrations_require_3pid:\n - email\n# - msisdn|" "/etc/matrix-$app/homeserver.yaml"
			
			# allowed_local_3pids: part
			allowedLocal3pids=${allowedLocal3pids}"\1"
			
			readarray -td, arr3pidemail < <(echo ${allowed_local_3pids_email});
			for pidemail in "${arr3pidemail[@]}"; do 
				# add it to regex substitution part
				allowedLocal3pids=${allowedLocal3pids}"\n  - medium: email";
				allowedLocal3pids=${allowedLocal3pids}"\n$(echo '    ')pattern: '$(echo ${pidemail})'";
			done; 
			;;
			
		'msisdn')
			# registrations_require_3pid: part
			sed -i -z -r "s|#?[^\S\n]*registrations_require_3pid:\n#?[^\S\n]*-[^\S\n]*email\n#?[^\S\n]*-[^\S\n]*msisdn|registrations_require_3pid:\n# - email\n - msisdn|" "/etc/matrix-$app/homeserver.yaml"

			# allowed_local_3pids: part
			allowedLocal3pids=${allowedLocal3pids}"\1"
			
			readarray -td, arr3pidmsisdn < <(echo ${allowed_local_3pids_msisdn});
			for pidmsisdn in "${arr3pidmsisdn[@]}"; do 
				# add it to regex substitution part
				allowedLocal3pids=${allowedLocal3pids}"\n  - medium: msisdn";
				allowedLocal3pids=${allowedLocal3pids}"\n$(echo '    ')pattern: '$(echo ${pidmsisdn})'";
			done; 
			;;
			
		'email&msisdn')
			# registrations_require_3pid: part
			sed -i -z -r "s|#?[^\S\n]*registrations_require_3pid:\n#?[^\S\n]*-[^\S\n]*email\n#?[^\S\n]*-[^\S\n]*msisdn|registrations_require_3pid:\n - email\n - msisdn|" "/etc/matrix-$app/homeserver.yaml"

			# allowed_local_3pids: part
			allowedLocal3pids=${allowedLocal3pids}"\1"
			
			readarray -td, arr3pidemail < <(echo ${allowed_local_3pids_email});
			for pidemail in "${arr3pidemail[@]}"; do 
				# add it to regex substitution part
				allowedLocal3pids=${allowedLocal3pids}"\n  - medium: email";
				allowedLocal3pids=${allowedLocal3pids}"\n$(echo '    ')pattern: '$(echo ${pidemail})'";
			done;
			
			readarray -td, arr3pidmsisdn < <(echo ${allowed_local_3pids_msisdn});
			for pidmsisdn in "${arr3pidmsisdn[@]}"; do 
				# add it to regex substitution part
				allowedLocal3pids=${allowedLocal3pids}"\n  - medium: msisdn";
				allowedLocal3pids=${allowedLocal3pids}"\n$(echo '    ')pattern: '$(echo ${pidmsisdn})'";
			done; 
			;;
		
		*)
			sed -i -z -r "s|#?[^\S\n]*registrations_require_3pid:\n#?[^\S\n]*-[^\S\n]*email\n#?[^\S\n]*-[^\S\n]*msisdn|#registrations_require_3pid:\n# - email\n# - msisdn|" "/etc/matrix-$app/homeserver.yaml"

			# empty fields and comment registration
			allowedLocal3pids=${allowedLocal3pids}"#\1"
			;;
	esac

	# finalize regex then apply sed command on the homeserver conf file
	allowedLocal3pids="${allowedLocal3pids}\n;";
	sed -i -z -r "${allowedLocal3pids}" "/etc/matrix-$app/homeserver.yaml"


	ynh_app_setting_set --app=$app --key=registrations_require_3pid --value="${registrations_require_3pid}"
}

get__allowed_local_3pids_email() {
	allowed_local_3pids_email=$(ynh_app_setting_get --app $app --key allowed_local_3pids_email)
	echo "${allowed_local_3pids_email}"
}

set__allowed_local_3pids_email() { 
	set__registrations_require_3pid;	
	ynh_app_setting_set --app=$app --key=allowed_local_3pids_email --value="${allowed_local_3pids_email}"
}

get__allowed_local_3pids_msisdn() {
	allowed_local_3pids_msisdn=$(ynh_app_setting_get --app $app --key allowed_local_3pids_msisdn)
	echo "${allowed_local_3pids_msisdn}"
}

set__allowed_local_3pids_msisdn() { 
	set__registrations_require_3pid;	
	ynh_app_setting_set --app=$app --key=allowed_local_3pids_msisdn --value="${allowed_local_3pids_msisdn}"
}

get__auto_join_rooms() {
	auto_join_rooms=$(ynh_app_setting_get --app $app --key auto_join_rooms)
	echo "${auto_join_rooms}"
}

set__auto_join_rooms() {

	if [ -z ${auto_join_rooms} ] ; then
		# remove all values comment header and example value
		sed -i -z -r "s|#?([^\S\n]*auto_join_rooms:\n)#?([^\S\n]*-[^\n]*\n)*|#\1#  - \"#example:example.com\"\n|" "/etc/matrix-$app/homeserver.yaml"
	else
		
		readarray -td, arrroom < <(echo ${auto_join_rooms});
		
		# print header then all space separated values
		autoJoinRooms="s|#?([^\S\n]*auto_join_rooms:)\n(#?[^\S\n]*-[^\n]*\n)*|\1";
		for room in "${arrroom[@]}"; do 
			autoJoinRooms="${autoJoinRooms}\n  - '$(echo ${room})'";
		done; 
		autoJoinRooms="${autoJoinRooms}\n|";
		sed -i -z -r "${autoJoinRooms}" "/etc/matrix-$app/homeserver.yaml"
	fi

	ynh_app_setting_set --app=$app --key=auto_join_rooms --value="${auto_join_rooms}"
}

#=================================================
# GENERIC FINALIZATION
#=================================================
# SELECT THE ACTION FOLLOWING THE GIVEN ARGUMENT
#=================================================
ynh_app_config_run $1