from model.editable import Editable
from model.translation import from_container_list


class Example(Editable):
    @staticmethod
    def add_clusters(entry):
        nocluster_examples = []
        taken_clusters = []
        
        # gahter all taken cluster numbers and all examples without clusters
        for sense in entry.senses:
            for example in sense.examples:
                cluster = example.get_cluster()
                if cluster == -1:
                    nocluster_examples.append(example)
                elif cluster is not None:
                    taken_clusters.append(cluster)
        
        cnum = 1
        for example in nocluster_examples:
            while cnum in taken_clusters:
                cnum += 1
            taken_clusters.append(cnum)
            
            example.set_cluster(cnum)
            
        
    def __init__(self, example_xml):
        self.translations = from_container_list(example_xml.querySelectorAll("translationContainer"))
        
        inner_xml = example_xml.querySelector("corpusExample")
        if inner_xml is not None:
            self.inner = CorpusExample(inner_xml)
        else:
            inner_xml = example_xml.querySelector("multiwordExample") 
            self.inner = MultiwordExample(inner_xml)
            
        all_components = [ComponentLexeme(el) for el in inner_xml.childNodes]
        self.components = [comp for comp in all_components if comp.isValid()]
    
        
    def export(self, doc):
        result = doc.createElement("exampleContainer")
        
        inner = self.inner.export(doc)
        # TODO: bad quick fix
        for comp in self.components:
            inner.appendChild(comp.export(doc))
        
        result.appendChild(inner)
        return result
    
    def text(self):
        return " ".join([comp.text for comp in self.components])
        
    def get_cluster(self):
        return self.inner.get_cluster()
    
    def get_valid_cluster(self):
        return self.inner.get_valid_cluster()
    
    def set_cluster(self, cluster):
        self.inner.cluster = cluster
    
    def is_collocation(self):
        return type(self.inner) is CorpusExample
    
            
class CorpusExample:
    def __init__(self, example_xml):
        self.other_attributes = {}
        for oth_attr in ["example_id", "modified", "lexical_unit_id", "audio"]:
            if example_xml.hasAttribute(oth_attr):
                self.other_attributes[oth_attr] = example_xml.getAttribute(oth_attr)
            
    def export(self, doc):
        result = doc.createElement("corpusExample")
        for key, value in self.other_attributes.items():
            result.setAttribute(key, value)
        return result
    
    def get_cluster(self):
        return None
    
    def get_valid_cluster(self):
        return None
    

class MultiwordExample:
    def __init__(self, example_xml):
        self.other_attributes = {}
        for oth_attr in ["type", "lexical_unit_id", "structure_id", "structureName", "audio", "frequency", "logDice"]:
            if example_xml.hasAttribute(oth_attr):
                self.other_attributes[oth_attr] = example_xml.getAttribute(oth_attr)
        
        self.cluster_valid = False
        self.cluster = -1
        if example_xml.hasAttribute("cluster"):
            self.cluster_valid = True
            self.cluster = int(example_xml.getAttribute("cluster"))
            
    def export(self, doc):
        result = doc.createElement("multiwordExample")
            
        for key, value in self.other_attributes.items():
            result.setAttribute(key, value)
        
        if self.cluster_valid:
            result.setAttribute("cluster", str(self.cluster))
        
        return result
        
    def get_cluster(self):
        return self.cluster
    
    def get_valid_cluster(self):
        return self.cluster if self.cluster_valid else None 


class ComponentLexeme(Editable):
    def __init__(self, xml):
        self.other_attributes = {}
        
        if xml.nodeName == "#text":
            self.text = xml.data
            self.role = None
        else:
            self.text = xml.textContent
            self.role = xml.getAttribute("role")

            for oth_attr in ["lexical_unit_lexeme_id", "slolex", "kol"]:
                if xml.hasAttribute(oth_attr):
                    self.other_attributes[oth_attr] = xml.getAttribute(oth_attr)
        
        self.text = self.text.strip()
    
    def isValid(self):
        return len(self.text) > 0
    
    def export(self, doc):
        if self.role is None:
            return doc.createTextNode(self.text)
        
        result = doc.createElement("comp")
        result.setAttribute("role", self.role)
        result.textContent = self.text
        
        for key, value in self.other_attributes.items():
            result.setAttribute(key, value)
        
        return result