import string
from docx.enum.text import WD_ALIGN_PARAGRAPH
from src.tools.paragraph_tools import find_list_indentation_level


INFINITE = 10000

class Paragraph:

    def __init__(self, xparagraph, doc_id: int, id_: int, doc):

        self.doc = doc
        self.xparagraph = xparagraph
        self.is_template_para = False if not "data/templates" in self.doc.path else True
        self.id_ = int(str(2) + str(doc_id) + str(id_))
        self.style_name = self.xparagraph.style.name
        self.is_list, self.list_indentation = find_list_indentation_level(self.xparagraph, self.doc) if not self.is_template_para else (False, 0)
        self.level = self.get_level_from_name(self.style_name)
        self.is_structure = self.level < INFINITE
        self.text = self.xparagraph.text
        self.type, self.parsed_text = self.parse_text()

    @property
    def style_misapplied(self):
        """
        function bugged, not used
        """
        #check if the actual paragraph style properties are the same as the style itself
        #if not, the style is misapplied
        first_run_style = [run.style.font for run in self.xparagraph.runs]
        first_run_style = first_run_style[0] if first_run_style else None
        if not first_run_style:
            return False
        doc_style = self.doc.styles.get_style_from_name(self.style_name)
        if first_run_style.size != doc_style.font.size:
            return True
        if first_run_style.name != doc_style.font.name:
            return True
        if first_run_style.bold != doc_style.font.bold:
            return True
        if first_run_style.italic != doc_style.font.italic:
            return True
        if first_run_style.underline != doc_style.font.underline:
            return True
        if first_run_style.all_caps != doc_style.font.all_caps:
            return True
        if first_run_style.color.rgb != doc_style.font.color.rgb:
            return True
        return False

    
    @property
    def structure(self):
        structure = {str(self.id_): {
            'index': str(self.id_),
            'canMove': True,
            'isFolder': False,
            'children': [],
            'title': self.text,
            'canRename': True,
            'data': {},
            'level': self.level,
        }}
        return structure

    @property
    def blank(self):
        """
        checks if the paragraph is blank: i.e. it brings some signal (it may otherwise be ignored)
        """
        text = self.text.replace('\n', '')
        return set(text).isdisjoint(string.ascii_letters)
    
    @property
    def toc(self):
        """
        Check if the paragraph is part of the table of contents
        """
        return "toc" in self.style_name

    @staticmethod
    def get_level_from_name(style_name: str) -> int:
        level = INFINITE
        if 'Titre' in style_name or 'Heading' in style_name:
            suffix = style_name[-1]
            try:
                level = int(suffix)
            except:
                pass
        return level
        

    def parse_text(self) -> (str, str):

        if self.is_structure:
            return 'structure', self.text

        startswith = {"?? ": "task", "++ ": "comment"}
        for start in startswith.keys():
            split = self.text.rsplit(start)
            if 1 < len(split):
                return startswith[start], split[1]

        return "normal", self.text

    def set_text(self, text: str):
        self.text = text
        self.xparagraph.text = text
        return self
                
    def center_paragraph(self):
        if self.contains_image():
            self.xparagraph.alignment = WD_ALIGN_PARAGRAPH.CENTER

    def justify_paragraph(self):
        if(self.xparagraph.style.name == "Normal"):
            self.xparagraph.alignment = WD_ALIGN_PARAGRAPH.JUSTIFY
            
    def contains_image(self) -> bool:
        return any("pic:pic" in run.element.xml for run in self.xparagraph.runs)

    def get_styles_in_paragraph_except_list(self):
        styles = [self.xparagraph.style] if not self.is_list else []
        for run in self.xparagraph.runs:
            if run.style.name != "Default Paragraph Font" and run.style.name != self.xparagraph.style.name:
                styles.append(run.style)
        return styles

    def get_list_styles(self):
        styles = []
        if self.is_list:
            styles.append(self.xparagraph.style.name + " : indentation = " + str(self.list_indentation))
        return styles
            
    def set_style(self, style):
        self.xparagraph.style = style
        return self