from message.simple_messages import ClickMessage, DataChgClickMessage, NoAction
from message.message import msg, Message
from view import modals
from browser import window, document
from lib.snabbdom import h
from lib.preferences import get_preference
from lib.structure_conversions import convert_structure

from model.example.example import Example
from model.example.corpus_example import CorpusExample
from model.example.multiword_example import MultiwordExample
from model.example.component_lexeme import ComponentLexeme
from model.example_clusters import ExampleClusters


class SkeExample:
    COLOR_CLASS = {
        None: "no-gf2-info",
        True: "goof-gf2-info",
        False: "bad-gf2-info"
    }
        
    def __init__(self):
        self.left = ""
        self.right = ""
        self.mid = ""
        self.s_id = ""
        self.gf2_good = None
        self.gf2_check = False
    
    @staticmethod
    def fromLine(line):
        result = SkeExample()
        
        for left_el in line.Left:
            result.left += left_el.str
        
        for right_el in line.Right:
            result.right += right_el.str
        
        for mid_el in line.Kwic:
            result.mid += mid_el.str
        
        for ref in line.Refs:
            if ref.startswith("s.id"):
                result.s_id = ref.split("=")[1]
            
        return result
        
        
    def view(self):
        return [h("span.{}".format(self.COLOR_CLASS[self.gf2_good]), {}, [
            h("span", {}, self.left + " "),
            h("span", {"style": {"font-weight": "bold"}}, self.mid),
            h("span", {}, self.right)])]
    
    
class SkeCollocation:
    def __init__(self, data):
        self.word = data.word
        self.frequency = data.count
        self.structure_name, self.structure_id = convert_structure(data.gramrel, data.lempos)
        
        self.other = {"score": data.score, "cm": data.cm}

    def view(self):
        return [h("span.example-text", {}, [
            h("span.example-text-2", {}, self.word),
            h("span.example-frequency", {}, self.frequency),
            h("span.example-logdice", {}, self.other["score"]),
            h("span", {}, "; "),
            h("span.grey1", {}, self.other["cm"]),
            h("span", {}, ","),
            h("span.grey2", {}, self.structure_name)])]


def get_parser(ske_index_type):
    if ske_index_type == 0:
        return lambda data: [SkeExample.fromLine(line) for line in data.Lines]
    elif ske_index_type == 1:
        return lambda data: [SkeCollocation(item) for item in data.Items]
    else:
        raise "unknown ske index type"


def match_gf2_examples(data, *args):
    if type(data) is not list:
        return
    
    url = "https://gf2examples.cjvt.si/get_examples"
    xhr = __new__(XMLHttpRequest())
    xhr.open("POST", url, True)
    
    request_dict = {}
    for example in data:
        request_dict[example.s_id] = example.mid
        
    xhr.setRequestHeader("Content-type", "application/json");
    xhr.addEventListener("load", msg(SkeModalGf2Update, *args, data))
    
    to_send = window.JSON.stringify(request_dict)
    xhr.send(to_send)


class SkeModal(ClickMessage):
    def on_event(self, event):
        # event could be data if this is the return from external library
        if type(event) in [list, int]:
            self.add_arg(event)
        else:
            if len(self._args) < 4:
                self.add_arg(None)
            super().on_event(event)
        
    def update_model(self, model):
        page_num = self.get_arg(0, int)
        search_term = self.get_arg(1, str)
        ske_index = self.get_arg(2, int)
        ske_lookup = model.ske.url_for_kind_index(ske_index)
        
        next_message = msg(SkeModal, page_num, search_term, ske_index)
        
        # could be none if empty
        data = self.get_arg(3)
        
        if data is None:
            params = {"additional_refs": "s.id,p.id",
                      "page_num": page_num,
                      "error_callback": next_message,
                      "data_parser": get_parser(ske_index)}
            
            gdex = get_preference("ske_gdex")
            if gdex:
                if not len(gdex) == 2:
                    window.console.log("Strange gdex setting, should be a list of length 2: [gdexconf, gdexcnt]")
                    return
                params["gdex"] = gdex
            
            model.ske.request(search_term, next_message, ske_lookup, params)
            
        elif type(data) is list:
            window.console.log(data)
            # check if gf2 examples are loaded or not
            if not data[0].gf2_check and type(data[0]) is SkeExample:
                # we get the data, we have to match it with available data on our gf2 examples API
                match_gf2_examples(data, page_num, search_term, ske_index)
 
        model.modal_set(lambda: modals.ske_list(
            search_term, data, page_num, model.entry.senses, model.ske.request_kinds))
    
    def reset(self):
        return False
    
    
class SkeModalGf2Update(SkeModal):
    def on_event(self, event):
        response_data = window.JSON.parse(event.target.response)
        data = self.get_arg(3)
        
        data_dict = {}
        for example in data:
            example.gf_good = False
            data_dict[example.s_id] = example
            
        bad_response = dict(response_data["bad"])
        for gf_sid, gf_data in bad_response.items():
            data_dict[gf_sid].gf2_good = None
            data_dict[gf_sid].gf2_check = True

        good_response = dict(response_data["good"])
        for gf_sid, gf_data in good_response.items():
            data_dict[gf_sid].left = gf_data.left
            data_dict[gf_sid].mid = gf_data.mid
            data_dict[gf_sid].right = gf_data.right
            data_dict[gf_sid].gf2_good = True
            data_dict[gf_sid].gf2_check = True
        
        # changed data_dict, now we can redraw!
        # just let it do its thing in update_model
        
    
class ShowSkeModal(SkeModal):
    def on_event(self, event):
        # if just showing first time, than show empty results and let user click search
        self.add_arg("")
        super().on_event(event)


class SearchInSkeModal(SkeModal):
    def on_event(self, event):
        self.add_arg(int(document.getElementById("ske-page-num").value))
        self.add_arg(document.getElementById("ske-search").value)
        self.add_arg(document.getElementById("ske-select").selectedIndex)
        super().on_event(event)


class SkeInsert(DataChgClickMessage):
    def update_model(self, model):
        data = self.get_arg(0)
        
        if type(data) is not list:
            return
        
        if len(data) == 0:
            return
        
        sense_num = document.getElementById("ske-sense-select").selectedIndex
        sense = model.entry.senses[sense_num]
        
        elements = document.getElementsByClassName("ske-line-check")
        assert(len(elements) == len(data))
        
        for ex, element in zip(data, elements):
            if not element.checked:
                continue
        
            elif isinstance(ex, SkeExample):
                sense.examples.append(self._as_corpus_example(ex))
        
            elif isinstance(ex, SkeCollocation):
                sense.examples.append(self._as_multiword_example(ex))
            
            else:
                console.log("You really should not be here, my lady")
                continue
        
        model.reset()
    
    def _as_corpus_example(self, example):
        new_example = Example()
        new_example.inner = CorpusExample()
        new_example.inner.other_attributes["example_id"] = example.s_id
        new_example.inner.cluster = ExampleClusters.first_empty_cluster()
        
        lex_left = ComponentLexeme()
        lex_left.text = example["left"]
        lex_left.role = None
        
        lex_mid = ComponentLexeme()
        lex_mid.text = example["mid"]
        lex_mid.role = "collocation"
        
        lex_right = ComponentLexeme()
        lex_right.text = example["right"]
        lex_right.role = None
        
        new_example.components.extend([lex_left, lex_mid, lex_right])
        return new_example
        
    def _as_multiword_example(self, example):
        new_collocation = Example()
        new_collocation.inner = MultiwordExample()
        
        new_collocation.inner.other_attributes["structure_id"] = example.structure_id
        new_collocation.inner.other_attributes["structureName"] = example.structure_name
        new_collocation.inner.other_attributes["logDice"] = example.other["score"]
        new_collocation.inner.other_attributes["frequency"] = example.frequency
        new_collocation.inner.type = "collocation"
        
        lex_left = ComponentLexeme()
        lex_left.text = ""
        lex_left.role = None
        
        lex_mid = ComponentLexeme()
        lex_mid.text = example.word
        lex_mid.role = "collocation"
        
        lex_right = ComponentLexeme()
        lex_right.text = ""
        lex_right.role = None
        
        new_collocation.components.extend([lex_left, lex_mid, lex_right])
        return new_collocation