import json

import modules.db.sql as sql
import modules.common.common as common
import modules.config.config as config_mod
import modules.server.server as server_mod
import modules.roxywi.common as roxywi_common
import modules.roxy_wi_tools as roxy_wi_tools

form = common.form
serv = form.getvalue('serv')
time_zone = sql.get_setting('time_zone')
get_date = roxy_wi_tools.GetDate(time_zone)
get_config_var = roxy_wi_tools.GetConfigVar()


def get_all_stick_table():
	hap_sock_p = sql.get_setting('haproxy_sock_port')
	cmd = 'echo "show table"|nc %s %s |awk \'{print $3}\' | tr -d \'\n\' | tr -d \'[:space:]\'' % (serv, hap_sock_p)
	output, stderr = server_mod.subprocess_execute(cmd)
	return output[0]


def get_stick_table(table):
	hap_sock_p = sql.get_setting('haproxy_sock_port')
	cmd = 'echo "show table %s"|nc %s %s |awk -F"#" \'{print $2}\' |head -1 | tr -d \'\n\'' % (table, serv, hap_sock_p)
	output, stderr = server_mod.subprocess_execute(cmd)
	tables_head = []
	for i in output[0].split(','):
		i = i.split(':')[1]
		tables_head.append(i)

	cmd = 'echo "show table %s"|nc %s %s |grep -v "#"' % (table, serv, hap_sock_p)
	output, stderr = server_mod.subprocess_execute(cmd)

	return tables_head, output


def show_backends(server_ip, **kwargs):
	hap_sock_p = sql.get_setting('haproxy_sock_port')
	cmd = f'echo "show backend" |nc {server_ip} {hap_sock_p}'
	output, stderr = server_mod.subprocess_execute(cmd)
	if stderr:
		roxywi_common.logging('Roxy-WI server', ' ' + stderr, roxywi=1)
	if kwargs.get('ret'):
		ret = list()
	else:
		ret = ""
	for line in output:
		if any(s in line for s in ('#', 'stats', 'MASTER', '<')):
			continue
		if len(line) > 1:
			back = json.dumps(line).split("\"")
			if kwargs.get('ret'):
				ret.append(back[1])
			else:
				print(back[1], end="<br>")

	if kwargs.get('ret'):
		return ret


def get_backends_from_config(server_ip: str, backends='') -> None:
	config_date = get_date.return_date('config')
	configs_dir = get_config_var.get_config_var('configs', 'haproxy_save_configs_dir')
	format_cfg = 'cfg'

	try:
		cfg = configs_dir + roxywi_common.get_files(configs_dir, format_cfg)[0]
	except Exception as e:
		roxywi_common.logging('Roxy-WI server', str(e), roxywi=1)
		try:
			cfg = f'{configs_dir}{server_ip}-{config_date}.{format_cfg}'
		except Exception:
			roxywi_common.logging('Roxy-WI server', ' Cannot generate cfg path', roxywi=1)
			return
		try:
			config_mod.get_config(server_ip, cfg)
		except Exception:
			roxywi_common.logging('Roxy-WI server', ' Cannot download config', roxywi=1)
			print('error: Cannot get backends')
			return

	with open(cfg, 'r') as f:
		for line in f:
			if backends == 'frontend':
				if (line.startswith('listen') or line.startswith('frontend')) and 'stats' not in line:
					line = line.strip()
					print(line.split(' ')[1], end="<br>")


def change_ip_and_port() -> None:
	backend_backend = common.checkAjaxInput(form.getvalue('backend_backend'))
	backend_server = common.checkAjaxInput(form.getvalue('backend_server'))
	backend_ip = common.checkAjaxInput(form.getvalue('backend_ip'))
	backend_port = common.checkAjaxInput(form.getvalue('backend_port'))

	if form.getvalue('backend_ip') is None:
		print('error: Backend IP must be IP and not 0')
		return

	if form.getvalue('backend_port') is None:
		print('error: The backend port must be integer and not 0')
		return

	haproxy_sock_port = sql.get_setting('haproxy_sock_port')

	MASTERS = sql.is_master(serv)
	for master in MASTERS:
		if master[0] is not None:
			cmd = 'echo "set server %s/%s addr %s port %s check-port %s" |nc %s %s' % (
				backend_backend, backend_server, backend_ip, backend_port, backend_port, master[0], haproxy_sock_port)
			output, stderr = server_mod.subprocess_execute(cmd)
			print(output[0])
			roxywi_common.logging(
				master[0], 'IP address and port have been changed. On: {}/{} to {}:{}'.format(
					backend_backend, backend_server, backend_ip, backend_port
				),
				login=1, keep_history=1, service='haproxy'
			)

	cmd = 'echo "set server %s/%s addr %s port %s check-port %s" |nc %s %s' % (
		backend_backend, backend_server, backend_ip, backend_port, backend_port, serv, haproxy_sock_port)
	roxywi_common.logging(
		serv,
		'IP address and port have been changed. On: {}/{} to {}:{}'.format(backend_backend, backend_server, backend_ip,
																		   backend_port),
		login=1, keep_history=1, service='haproxy'
	)
	output, stderr = server_mod.subprocess_execute(cmd)

	if stderr != '':
		print('error: ' + stderr[0])
	else:
		print(output[0])
		configs_dir = get_config_var.get_config_var('configs', 'haproxy_save_configs_dir')
		cfg = configs_dir + serv + "-" + get_date.return_date('config') + ".cfg"

		config_mod.get_config(serv, cfg)
		cmd = 'string=`grep %s %s -n -A25 |grep "server %s" |head -1|awk -F"-" \'{print $1}\'` ' \
			  '&& sed -Ei "$( echo $string)s/((1?[0-9][0-9]?|2[0-4][0-9]|25[0-5])\.){3}(1?[0-9][0-9]?|2[0-4][0-9]|25[0-5]):[0-9]+/%s:%s/g" %s' % \
			  (backend_backend, cfg, backend_server, backend_ip, backend_port, cfg)
		server_mod.subprocess_execute(cmd)
		config_mod.master_slave_upload_and_restart(serv, cfg, just_save='save')


def change_maxconn() -> None:
	frontend = common.checkAjaxInput(form.getvalue('maxconn_frontend'))
	maxconn = common.checkAjaxInput(form.getvalue('maxconn_int'))

	if form.getvalue('maxconn_int') is None:
		print('error: Maxconn must be integer and not 0')
		return

	haproxy_sock_port = sql.get_setting('haproxy_sock_port')

	MASTERS = sql.is_master(serv)
	for master in MASTERS:
		if master[0] is not None:
			if frontend == 'global':
				cmd = 'echo "set maxconn %s %s" |nc %s %s' % (frontend, maxconn, master[0], haproxy_sock_port)
			else:
				cmd = 'echo "set maxconn frontend %s %s" |nc %s %s' % (frontend, maxconn, master[0], haproxy_sock_port)
			output, stderr = server_mod.subprocess_execute(cmd)
		roxywi_common.logging(master[0], 'Maxconn has been changed. On: {} to {}'.format(frontend, maxconn), login=1,
							  keep_history=1,
							  service='haproxy')

	if frontend == 'global':
		cmd = 'echo "set maxconn %s %s" |nc %s %s' % (frontend, maxconn, serv, haproxy_sock_port)
	else:
		cmd = 'echo "set maxconn frontend %s %s" |nc %s %s' % (frontend, maxconn, serv, haproxy_sock_port)
	print(cmd)
	roxywi_common.logging(serv, 'Maxconn has been changed. On: {} to {}'.format(frontend, maxconn), login=1,
						  keep_history=1,
						  service='haproxy')
	output, stderr = server_mod.subprocess_execute(cmd)

	if stderr != '':
		print(stderr[0])
	elif output[0] == '':
		configs_dir = get_config_var.get_config_var('configs', 'haproxy_save_configs_dir')
		cfg = configs_dir + serv + "-" + get_date.return_date('config') + ".cfg"

		config_mod.get_config(serv, cfg)
		cmd = 'string=`grep %s %s -n -A5 |grep maxcon -n |awk -F":" \'{print $2}\'|awk -F"-" \'{print $1}\'` ' \
			  '&& sed -Ei "$( echo $string)s/[0-9]+/%s/g" %s' % (frontend, cfg, maxconn, cfg)
		server_mod.subprocess_execute(cmd)
		config_mod.master_slave_upload_and_restart(serv, cfg, just_save='save')
		print('success: Maxconn for %s has been set to %s ' % (frontend, maxconn))
	else:
		print('error: ' + output[0])


def table_select():
	from jinja2 import Environment, FileSystemLoader
	env = Environment(loader=FileSystemLoader('templates'), autoescape=True,
					  extensions=['jinja2.ext.loopcontrols', 'jinja2.ext.do'], trim_blocks=True, lstrip_blocks=True)
	table = form.getvalue('table_select')

	if table == 'All':
		template = env.get_template('ajax/stick_tables.html')
		tables = get_all_stick_table()
		table = []
		for t in tables.split(','):
			if t != '':
				table_id = []
				tables_head = []
				tables_head1, table1 = get_stick_table(t)
				table_id.append(tables_head1)
				table_id.append(table1)
				table.append(table_id)

		template = template.render(table=table)
	else:
		template = env.get_template('ajax/stick_table.html')
		tables_head, table = get_stick_table(table)
		template = template.render(tables_head=tables_head, table=table)

	print(template)