# Mattermost APIv4 Bot.
# written 2019 by Ju <daju@fsinf.at>

import mwclient
import pprint
import sys
import re


from AbstractCommand import *
class CommandRaumsuche(AbstractCommand):
    TRIGGER = "raumsuche"
    CONFIG = {"display_name": "somebot-command", "auto_complete": True,
        "auto_complete_hint": "Name",
    }
    USEINFO = CONFIG["auto_complete_desc"] = CONFIG["description"] = "Tries to find the room with given name."

    # maximum results/rooms listed
    MAX_RESULTS = 10
    # path to wiki
    WIKI_URL = "wiki.fsinf.at"
    # link to page with all rooms
    WIKI_URL_ROOMS = "https://wiki.fsinf.at/wiki/Kategorie:Raumcode"
    # wiki-login (optional)
    #MWS_USER = "USER"
    #MWS_PASS = "PASSWORD"
    # osm - experimental - uncomment to deactivate
    OSM_URL = "https://www.openstreetmap.org/search?query="
    # OSWM link with coordinates - uncomment to deactivate
    OSM_COORDINATES = "https://www.openstreetmap.org/?"
    # feedback to:
    FEEDBACK = "\n\nFeedback zu diesem Feature bitte an **[@​ju](https://mattermost.fsinf.at/fsinf-intern/messages/@ju)** =^.^="
    # Help-Text
    HELP_TEXT  = "Folgende Tipps können dir bei der Suche helfen:\n"
    HELP_TEXT += "\n"
    HELP_TEXT += "+ die Suche ist nicht case sensitiv\n"
    HELP_TEXT += "+ Verwende 'EI 7' statt 'EI7'\n"
    HELP_TEXT += "+ sollte ein Raum nicht eingetragen sein, oder der Suchbegriff nicht passen, schau auf [diese Seite](https://wiki.fsinf.at/wiki/Raum:Hauptseite) und trage ihn nach. Das Wiki lebt von eurer Hilfe."
    HELP_TEXT += FEEDBACK


    def __init__(self, team_id, mw_user=None, mw_user_pw=None):
        super().__init__(team_id)
        self.mw_user = mw_user
        self.mw_user_pw = mw_user_pw


    def on_POST(self, request, data):
        msg = ""

        if data["text"].strip() != "" and data["text"].replace("--chan ", "").strip() != "":
            if data["text"].startswith("--chan "):
                msg = self.roomSearch(data["text"].replace("--chan ", ""))
                request.cmd_respond_text_chan(msg)
                return True
            else:
                msg = self.roomSearch(data["text"])
                request.cmd_respond_text_temp(msg)
                return True
        else:
            request.cmd_respond_text_temp("Du hast vergessen einen Raumnamen anzugeben.\n\n" + self.HELP_TEXT)
            return True


    def roomSearch(self, searchTerm):
        searchTerm = searchTerm.strip()
        if searchTerm == "help" or searchTerm == "?":
            return self.HELP_TEXT

        # a try to prevent injections
        searchTerm = re.sub("[^\w]+", " ", searchTerm)
        searchTerm = searchTerm.replace("  ", " ").strip()

        # space to * for matching "HS 11" to "HS 11" and "HS11"
        searchTerm = searchTerm.replace(" ", "*")
        query="[[Category:Raumcode]]|[[RoomName::~*" + searchTerm + "*]] OR [[SearchValue::~*" + searchTerm + "*]] OR [[RoomCode::~*" + searchTerm + "*]]|?RoomName|?Address|?RoomCode|?Longitude|?Latitude"
        result = "Du hast nach **`" + searchTerm + "`** gesucht."

        # check if service is available, if so execute query
        try:
            mws = mwclient.Site(self.WIKI_URL, path="/", retry_timeout=120)
        except Exception:
            return "Der Service ist gerade nicht verfügbar (zB keine Verbindung zum wiki)."

        #use user + pass for wiki connection if it is set
        if self.mw_user and self.mw_user_pw:
            mws.login(self.mw_user, self.mw_user_pw)
            # TODO: wrong credentials behandeln


        query_result = mws.ask(query)

        # no results
        # https://stackoverflow.com/a/21525143
        _exhausted = object()
        if next(query_result, _exhausted) == _exhausted:
            return result + " Leider konnten keine Ergebnisse gefunden werden.\n\n" + self.HELP_TEXT

        result += " Folgende Räume wurden gefunden:\n"
        # get items again, because they get consumed in the isEmpty
        query_result = mws.ask(query)
        # results present
        counter = 0
        for p in query_result:
            if counter < self.MAX_RESULTS:
#                pprint.pprint(p)
                # check if values are present
                if len(next(iter(p.values()))["printouts"]["RoomCode"]) > 0:
                    roomCode = next(iter(p.values()))["printouts"]["RoomCode"][0]
                else:
                    roomCode = ""
                if len(next(iter(p.values()))["printouts"]["RoomName"]) > 0:
                    roomName = next(iter(p.values()))["printouts"]["RoomName"][0]
                else:
                    roomName = ""
                if len(next(iter(p.values()))["printouts"]["Address"]) > 0:
                    address =  next(iter(p.values()))["printouts"]["Address"][0]
                else:
                    address = ""
                if len(next(iter(p.values()))["printouts"]["Longitude"]) > 0:
                    longitude = next(iter(p.values()))["printouts"]["Longitude"][0]["fulltext"]
                else:
                    longitude = ""
                if len(next(iter(p.values()))["printouts"]["Latitude"]) > 0:
                    latitude =  next(iter(p.values()))["printouts"]["Latitude"][0]["fulltext"]
                else:
                    latitude = ""

                url = next(iter(p.values()))["fullurl"]

                result += "\n+ [" + roomCode + "](" + url + "), **" + roomName + "** findest du hier: "

                # Address - Part
                # priority over "OSM_URL":
                if "OSM_COORDINATES" in dir(self) and len(latitude) > 0 and len(longitude) > 0:
                    # mlat={{{latitude}}}&mlon={{{longitude}}}#map=19/{{{latitude}}}/{{{longitude}}}
                    osm_query = "mlat=" + latitude + "&mlon=" + longitude + "#map=19/" + latitude + "/" + longitude
                    result += "[" + address + "](" + self.OSM_COORDINATES + osm_query + " \"link to open street maps\")"
                # link without coordinates:
                elif "OSM_URL" in dir(self):
                    # case format "1040 Wien, Favoritenstraße 9; durch Gittertor und Hof zu Stiege II; ins 2. OG; vom Lift aus rechts;"
                    if "wien" in address.split(",")[0].lower():
                        osm_query = "wien%20" + address.split(";")[0].split(",")[1]
                    # case format "Floragasse 7, 2. Stock"
                    else:
                        osm_query = "wien%20" + address.split(",")[0]
                    # transforms space to %20
                    osm_query = osm_query.replace(" ", "%20")
                    # transforms street number "22-25" to "22"
                    osm_query = re.sub(r"-\d+", r"", osm_query)
                    
                    result += "[" + address + "](" + self.OSM_URL + osm_query + ")"
                # else print plain address
                else:
                    result += address
                counter += 1
            else:
                break

        result += "\n\nSollte der Raum nicht dabei sein, kannst du ihn unter [Wiki-Räume](" + self.WIKI_URL_ROOMS + ") nachtragen bzw. einen Suchbegriff hinzufügen." + self.FEEDBACK
        return result



if __name__ == "__main__":
    a = CommandRaumsuche("asdf")
    print(a.roomSearch(sys.argv[1]))
