import os
import sys
import json
from bottle import route, run, template, hook, response, request, post
sys.path.append(os.path.join(sys.path[0], '/var/www/haproxy-wi/app/'))

import sql
import funct


def get_token():
	try:
		body = request.body.getvalue().decode('utf-8')
		login_pass = json.loads(body)
		login = login_pass['login']
		password_from_user = login_pass['password']
	except Exception as e:
		return 'error getting credentials: '+str(e)
	try:
		group_name = login_pass['group']
		group_id = sql.get_group_id_by_name(group_name)
	except Exception as e:
		return 'error getting group: '+str(e)
	try:
		users = sql.select_users(user=login)
		password = funct.get_hash(password_from_user)
	except Exception as e:
		return 'error one more: '+str(e)

	for user in users:
		if user.activeuser == 0:
			return False
		if login in user.username and password == user.password:
			import uuid
			user_token = str(uuid.uuid4())
			sql.write_api_token(user_token, group_id, user.role, user.username)
			return user_token
		else:
			return False


def check_login(required_service=0):
	token = request.headers.get('token')
	if sql.get_api_token(token):
		if required_service != 0:
			user_id = sql.get_user_id_by_api_token(token)
			user_services = sql.select_user_services(user_id)

			if str(required_service) in user_services:
				return True
			else:
				return False

		else:
			return True
	else:
		return False


def return_dict_from_out(server_id, out):
	data = {server_id: {}}
	for k in out:
		if "Ncat:" not in k:
			k = k.split(':')
			data[server_id][k[0]] = k[1].strip()
		else:
			data[server_id] = {"error":"Cannot connect to HAProxy"}
			
	return data
	
	
def check_permit_to_server(server_id):
	servers = sql.select_servers(id_hostname=server_id)
	token = request.headers.get('token')
	login, group_id = sql.get_username_groupid_from_api_token(token)
		
	for s in servers:		
		server = sql.get_dick_permit(username=login, group_id=group_id, ip=s[2], token=token)
		
	return server
	

def get_server(server_id):
	data = {}
	try:	
		servers = check_permit_to_server(server_id)
				
		for s in servers:
			data = {  
				'server_id':s[0],
				'hostname':s[1],
				'ip':s[2],
				'group':s[3],
				'virt':s[4],
				'enable':s[5],
				'master':s[6],
				'creds':s[7]
			}
	except:
		data = ''
	return dict(server=data)
	
	
def get_status(server_id):
	try:
		servers = check_permit_to_server(server_id)
		
		for s in servers:
			cmd = 'echo "show info" |nc %s %s -w 1|grep -e "Ver\|CurrConns\|Maxco\|MB\|Uptime:"' % (s[2], sql.get_setting('haproxy_sock_port'))
			
		out = funct.subprocess_execute(cmd)
		data = return_dict_from_out(server_id, out[0])
		
	except:
		data = {server_id: {"error": "Cannot find the server"}}
		return dict(error=data)
			
	return dict(status=data)
	
	
def get_all_statuses():
	data = {}
	try:
		servers = sql.select_servers()
		token = request.headers.get('token')
		login, group_id = sql.get_username_groupid_from_api_token(token)
		sock_port = sql.get_setting('haproxy_sock_port')
			
		for s in servers:		
			servers = sql.get_dick_permit(username=login, group_id=group_id, token=token)
			
		for s in servers:
			cmd = 'echo "show info" |nc %s %s -w 1|grep -e "Ver\|CurrConns\|Maxco\|MB\|Uptime:"' % (s[2], sock_port)
			data[s[2]] = {}	
			out = funct.subprocess_execute(cmd)
			data[s[2]] = return_dict_from_out(s[1], out[0])
	except:
		data = {"error":"Cannot find the server"}
		return dict(error=data)
			
	return dict(status=data)
	
	
def actions(server_id, action):
	if action == 'start' or action == 'stop' or action == 'restart':
		try:			
			servers = check_permit_to_server(server_id)
				
			for s in servers:
				cmd = [ "sudo systemctl %s haproxy" % action ]
				error = funct.ssh_command(s[2], cmd)
				done = error if error else 'done'
					
				data = {'server_id':s[0],'ip':s[2],'action':action,'hostname':s[1],'status':done}
				
			return dict(status=data)
		except:
			return dict(status='error')
	else:
		return dict(status='wrong action')
		
		
	
def runtime(server_id):
	data = {}
	try:
		body = request.body.getvalue().decode('utf-8')
		json_loads = json.loads(body)
		action = json_loads['command']
		haproxy_sock = sql.get_setting('haproxy_sock')
		servers = check_permit_to_server(server_id)
		cmd = [ 'echo "%s" |sudo socat stdio %s' % (action, haproxy_sock) ]
		
		for s in servers:
			out = funct.ssh_command(s[2], cmd)
		
		data = {server_id: {}}
		sep_data = out.split('\r\n')
		data = {server_id: sep_data}
		
		return dict(status=data)
	except:
		return dict(status='error')
		
		
def show_backends(server_id):
	data = {}
	try:
		servers = check_permit_to_server(server_id)
		
		for s in servers:
			out = funct.show_backends(s[2], ret=1)
			
		data = {server_id: out}
		
	except:
		data = {server_id: {"error": "Cannot find the server"}}
		return dict(error=data)
			
	return dict(backends=data)		
	
	
def get_config(server_id):
	data = {}
	try:
		servers = check_permit_to_server(server_id)
		
		for s in servers:
			cfg = '/tmp/'+s[2]+'.cfg'
			out = funct.get_config(s[2], cfg)
			os.system("sed -i 's/\\n/\n/g' "+cfg)
		try:
			conf = open(cfg, "r")
			config_read = conf.read()
			conf.close
			
		except IOError:
			conf = '<br />Can\'t read import config file'
			
		data = {server_id: config_read}
		
	except:
		data = {server_id: {"error": "Cannot find the server"}}
		return dict(error=data)
			
	return dict(config=data)


def get_section(server_id):
	section_name = request.headers.get('section-name')
	servers = check_permit_to_server(server_id)
	for s in servers:
		cfg = '/tmp/' + s[2] + '.cfg'

		out = funct.get_config(s[2], cfg)
		start_line, end_line, config_read = funct.get_section_from_config(cfg, section_name)

	data = {server_id: {section_name:{'start_line':start_line, 'end_line':end_line, 'config_read':config_read}}}
	return dict(section=data)



def upload_config(server_id):
	data = {}
	body = request.body.getvalue().decode('utf-8')
	save = request.headers.get('action')
	token = request.headers.get('token')
	login, group_id = sql.get_username_groupid_from_api_token(token)
	hap_configs_dir = funct.get_config_var('configs', 'haproxy_save_configs_dir')

	if save == '':
		save = 'save'
	elif save == 'restart':
		save = ''
	elif save == 'reload':
		save = 'reload'

	try:
		servers = check_permit_to_server(server_id)

		for s in servers:
			ip = s[2]
		cfg = '/tmp/'+ip+'.cfg'
		cfg_for_save = hap_configs_dir + ip + "-" + funct.get_data('config') + ".cfg"

		try:
			with open(cfg, "w") as conf:
				conf.write(body)
			return_mess = 'config has been uploaded'
			os.system("/bin/cp %s %s" % (cfg, cfg_for_save))
			out = funct.master_slave_upload_and_restart(ip, cfg, save, login=login)
			funct.logging('localhost', " config has been uploaded via API", login=login)
			funct.logging(ip, 'config has been uploaded via API', haproxywi=1, login=login,
						  keep_history=1, service='haproxy')

			if out:
				return_mess = out
		except IOError:
			return_mess = "cannot upload config"

		data = {server_id: return_mess}
	except Exception as e:
		data = {server_id: {"error": str(e)}}
		return dict(error=data)

	return dict(config=data)
	
	
def add_to_config(server_id):
	data = {}
	body = request.body.getvalue().decode('utf-8')
	save = request.headers.get('action')
	hap_configs_dir = funct.get_config_var('configs', 'haproxy_save_configs_dir')
	token = request.headers.get('token')
	login, group_id = sql.get_username_groupid_from_api_token(token)
	
	if save == '':
		save = 'save'
	elif save == 'restart':
		save = ''
		
	try:
		servers = check_permit_to_server(server_id)
		
		for s in servers:
			ip = s[2]
		cfg = '/tmp/' + ip + '.cfg'
		cfg_for_save = hap_configs_dir + ip + "-" + funct.get_data('config') + ".cfg"
		out = funct.get_config(ip, cfg)
		try:
			with open(cfg, "a") as conf:
				conf.write('\n'+body+'\n')

			return_mess = 'section has been added to the config'
			os.system("/bin/cp %s %s" % (cfg, cfg_for_save))
			funct.logging('localhost', " section has been added via REST API", login=login)
			out = funct.upload_and_restart(ip, cfg, just_save=save)

			if out:
				return_mess = out
		except IOError:
			return_mess = "cannot upload config"
			
		data = {server_id: return_mess}
	except:
		data[server_id] = {"error":"cannot find the server"}
		return dict(error=data)
			
	return dict(config=data)	
	
	
def show_log(server_id):
	data = {}
	rows = request.headers.get('rows')
	waf = request.headers.get('waf')
	grep = request.headers.get('grep')
	hour = request.headers.get('start_hour')
	minute = request.headers.get('start_minute')
	hour1 = request.headers.get('end_hour')
	minute1 = request.headers.get('end_minute')
	
	if rows is None:
		rows = '10'
	if waf is None:
		waf = '0'
	if hour is None:
		hour = '00'
	if minute is None:
		minute = '00'
	if hour1 is None:
		hour1 = '24'
	if minute1 is None:
		minute1 = '00'

	try:
		servers = check_permit_to_server(server_id)
		
		for s in servers:
			ip = s[2]
	except:
		
		data[server_id] = {"error":"Cannot find the server"}
		return dict(error=data)
		
	out = funct.show_haproxy_log(ip, rows=rows, waf=str(waf), grep=grep, hour=str(hour), minut=str(minute), hour1=str(hour1), minut1=str(minute1), html=0)
	data = {server_id: out}

	return dict(log=data)

def add_acl(server_id):
	body = request.body.getvalue().decode('utf-8')
	json_loads = json.loads(body)
	save = json_loads['action']
	section_name = json_loads['section-name']

	acl = generate_acl(with_newline=1)
	servers = check_permit_to_server(server_id)
	status = ''

	for s in servers:
		cfg = '/tmp/' + s[2] + '.cfg'
		server_ip = s[2]

	try:
		out = funct.get_config(server_ip, cfg)
		start_line, end_line, config_read = funct.get_section_from_config(cfg, section_name)
	except Exception as e:
		status = "Cannot read section: " + str(e)

	try:
		config_read += acl
		config = funct.rewrite_section(start_line, end_line, cfg, config_read)
		try:
			with open(cfg, "w") as conf:
				conf.write(config)
		except IOError as e:
			status = "Cannot read import config file: " + str(e)
	except Exception as e:
		status = str(e)

	try:
		out = funct.master_slave_upload_and_restart(server_ip, cfg, just_save=save)
		if out != '':
			status = out
		else:
			status = 'ACL has been added'
	except Exception as e:
		status = str(e)

	data = {'acl':status}
	return dict(data)


def del_acl(server_id):
	body = request.body.getvalue().decode('utf-8')
	json_loads = json.loads(body)
	save = json_loads['action']
	section_name = json_loads['section-name']

	acl = generate_acl()
	servers = check_permit_to_server(server_id)
	status = ''

	for s in servers:
		cfg = '/tmp/' + s[2] + '.cfg'
		server_ip = s[2]
	try:
		out = funct.get_config(server_ip, cfg)
		start_line, end_line, config_read = funct.get_section_from_config(cfg, section_name)
	except Exception as e:
		status = str(e)

	try:
		config_new_read = ''
		for line in config_read.split('\n'):
			if not line.startswith(acl):
				if line != '':
					config_new_read += line + '\n'
	except Exception as e:
		status = 'Cannot delete ACL: ' + str(e)

	try:
		config = funct.rewrite_section(start_line, end_line, cfg, config_new_read)
		try:
			with open(cfg, "w") as conf:
				conf.write(config)
		except IOError as e:
			status = "Cannot read import config file: " + str(e)
	except Exception as e:
		status = 'Cannot delete ACL: ' + str(e)

	try:
		out = funct.master_slave_upload_and_restart(server_ip, cfg, just_save=save)
		if out != '':
			status = out
		else:
			status = 'ACL has been deleted'
	except Exception as e:
		status = str(e)

	return dict(acl=status)


def generate_acl(**kwargs):
	body = request.body.getvalue().decode('utf-8')
	json_loads = json.loads(body)
	if_value = json_loads['if_value']
	then_value = json_loads['then_value']
	if_acl = json_loads['if']
	then_acl = json_loads['then']
	acl = ''

	if if_acl == 'host_starts':
		acl_if_word = 'hdr_beg(host) -i '
	elif if_acl == 'host_ends':
		acl_if_word = 'hdr_end(host) -i '
	elif if_acl == 'path_starts':
		acl_if_word = 'path_beg -i '
	elif if_acl == 'path_ends':
		acl_if_word = 'path_end -i '
	elif if_acl == 'src_ip':
		acl_if_word = 'src ip '
	else:
		acl_if_word = ''

	if then_acl == 'use_backend':
		acl += '    use_backend '
	elif then_acl == 'redirect':
		acl += '    http-request redirect location '
	elif then_acl == 'allow':
		acl += '    http-request allow'
	elif then_acl == 'deny':
		acl += '    http-request deny'
	elif then_acl == 'return':
		acl += '    return '
	elif then_acl == 'set-header':
		acl += '    set-header '

	newline = '\n' if kwargs.get('with_newline') else ''
	acl += then_value + ' if { ' + acl_if_word + if_value + ' } ' + newline

	return acl