import re
import agent_util
from plugins.tomcat_jmx import TomcatJMXPlugin
import logging
try:
  from bs4 import BeautifulSoup
except:
  try:
      import BeautifulSoup
  except:
      BeautifulSoup = None
from agent_util import float

logger = logging.getLogger(__name__)


def execute_query(config, query):
    username = config['username'].strip()
    password = config["password"].strip()
    url = config['console_url']
    queryType = 'wget -qO-'
    query = query % (queryType, url, username, password)
    ret, output = agent_util.execute_command(query)
    return str(output)


def get_all_data(config):
    query = '%s %s/manager/status/all --user=%s --password=%s'
    output = str(execute_query(config, query))
    dom = BeautifulSoup(output)

    def parse_item(item, prefix):
        res = ""
        for line in item.contents:
            if isinstance(line, basestring) and not line.strip().startswith("Start time"):
                res += "%s " % line
        results = {}
        for res in re.findall(r"((.*?):\s(.*?)\s((ms|MB|s)\s)?)", res ):
            key = "%s/%s" % (prefix, res[1].strip())
            results[key] = {
                "value": float(res[2]),
                "unit": res[4]
            }
        return results

    data = {}
    all_items = []
    for heading in reversed(dom.select('h1')):
        heading_text = heading.string.strip('"')
        if heading_text == 'Application list': continue
        if heading_text == 'JVM':
            data[heading_text] = {}
            p = heading.find_next("p")
            data[heading_text].update(parse_item(p, "Total"))
            table = heading.find_next("table")
            if not table: continue
            for item in table.find("tbody").find_all("tr"):
                try:
                    row = item.find_all("td")
                    row = [i.text for i in row]
                    mem_type = row[1].replace(" memory", "")
                    pool = row[0]
                    result = {}
                    result['%s/Initial' % mem_type] = {
                        "value": float(row[2].split(" ")[0]),
                        "unit": row[2].split(" ")[1]
                    }
                    result['%s/Total' % mem_type] = {
                        "value": float(row[3].split(" ")[0]),
                        "unit": row[3].split(" ")[1]
                    }
                    result['%s/Max' % mem_type] = {
                        "value": float(row[4].split(" ")[0]),
                        "unit": row[4].split(" ")[1]
                    }
                    result['%s/Used' % mem_type] = {
                        "value": float(row[5].split(" ")[0]),
                        "unit": row[5].split(" ")[1]
                    }
                    result['%s/Used Percentage' % mem_type] = {
                        "value": float(re.findall("\(([0-9]*)%\)", row[5])[0]),
                        "unit": "%"
                    }
                    data[pool] = result
                except Exception:
                    import sys
                    _, e, _ = sys.exc_info()
                    logging.getLogger("plugin 'tomcat'").error(str(e))
                    pass
            continue
        data[heading_text] = {}
        p = heading.find_next("p")
        data[heading_text].update(parse_item(p, "Total"))
        for item in heading.find_all_next("h2"):
            if item not in all_items:
                item['id'] = len(all_items)
                all_items.append(item)
                p = item.find_next("p")
                data[heading_text].update(parse_item(p, item.string.split("[")[0].strip()))

    reverse_data = {}
    for option, metrics in data.items():
        for metric, properties in metrics.items():
            metric = metric[0].upper() + metric[1:]
            if metric not in reverse_data:
                reverse_data[metric] = {
                    "unit": properties["unit"],
                    "options": {}
                }
            reverse_data[metric]["options"][option] = properties["value"]

    return reverse_data


class TomcatPlugin(agent_util.Plugin):
    textkey = "tomcat"
    label = "Tomcat"

    @classmethod
    def get_metadata(self, config):
        if 'username' in config and 'console_url' in config and 'password' in config: # Tomcat via wget Plugin
            status = agent_util.SUPPORTED
            msg = None

            # check for tomcat configuration block
            if ("username" not in config or "console_url" not in config or "password" not in config or BeautifulSoup == None):
                self.log.info("tomcat is not configured")
                status = agent_util.MISCONFIGURED
                msg = "tomcat is not configured properly"
                return {}

            # check if tomcat is even installed or running
            ret, output = agent_util.execute_command('wget -qO- %s' % config['console_url'])
            if config.get("debug", False):
                self.log.debug('#####################################################')
                self.log.debug("Tomcat command 'wget -qO- %s' output:" % config['console_url'])
                self.log.debug(str(output))
                self.log.debug('#####################################################')
            if ret != 0:
                self.log.info("tomcat is not running or installed")
                status = agent_util.UNSUPPORTED
                msg = "tomcat not found"
                return {}

            data = {}
            for metric, properties in get_all_data(config).items():
                data[metric] = {
                    "label": metric,
                    "options": sorted(properties["options"].keys()),
                    "status": status,
                    "error_message": msg,
                    "unit": properties["unit"] or None
                }
            return data
        elif 'host' in config and 'port' in config:  # Tomcat via JMX Plugin
            return TomcatJMXPlugin.get_metadata(config)

        self.log.error(("tomcat is not configured: you must have either a set"
                        " of [username, console_url, password] or [host, port]"
                        " configured in your tomcat application block."))
        return {}

    def check(self, textkey, data, config):
        if 'username' in config and 'console_url' in config and 'password' in config:  # Tomcat via wget Plugin
            try: return get_all_data(config)[textkey]['options'][data]
            except: return 0
        elif 'host' in config and 'port' in config:  # Tomcat via JMX Plugin
            return TomcatJMXPlugin.check(textkey, data, config)

        self.log.error(("tomcat is not configured: you must have either a set"
                        " of [username, console_url, password] or [host, port]"
                        " configured in your tomcat application block."))
        return 0