from PySide6.QtWidgets import QWidget
from PySide6.QtCore import QSize
from PySide6.QtGui import QTextCharFormat, QTextCursor, QColor, QTextBlockFormat
from ui_main_window import Ui_MainWindow
from file_cmds import FileCmds


class MainWindow(QWidget, Ui_MainWindow):
    def __init__(self):
        super().__init__()
        self.setupUi(self)
        self.window_title = "mediaInfoSama"
        self.setWindowTitle(self.window_title)
        self.setAcceptDrops(True)
        self.setupConnections()

        self.splitter.setStretchFactor(0, False)
        self.splitter.setStretchFactor(1, True)

        self.detail_text_edit.setFont("UbuntuMono NF")
        self.detail_text_edit.zoomIn(2)


    def setupConnections(self):
        self.tracks_list_widget.itemSelectionChanged.connect(self.popuplate_content)
        self.search_line_edit.textChanged.connect(self.search)


    def dragEnterEvent(self, event):
        event.accept()
    
        
    def dragMoveEvent(self, event):
        event.accept()


    def dropEvent(self, event):
        self.file_path = event.mimeData().urls()[0].toLocalFile()
        self.file_cmds = FileCmds(self.file_path)
        
        if self.file_cmds.file_exist() == False:
            return

        self.setWindowTitle(f"{self.file_path} - {self.window_title}")
        self.populate_tabs()
        self.tracks_list_widget.item(0).setSelected(True)


    def populate_tabs(self):
        self.tracks_list_widget.clear()
        self.tracks_list_widget.addItems(self.file_cmds.tabs_list)
        
        for i in range(self.tracks_list_widget.count()):
            item = self.tracks_list_widget.item(i)
            height = self.tracks_list_widget.sizeHintForRow(0)
            item.setSizeHint(QSize(0, height+5))


    def popuplate_content(self):
        item_selected = self.tracks_list_widget.selectedItems()
        if item_selected:            
            self.content = self.file_cmds.tabs_content[item_selected[0].text()]
            self.detail_text_edit.setPlainText(self.content)
            self.search()
            self.wrap_line_indent()


    def wrap_line_indent(self):
        cursor = QTextCursor(self.detail_text_edit.document())
        cursor.select(QTextCursor.Document)
        fmt = QTextBlockFormat()
        fmt.setLeftMargin(100)
        fmt.setTextIndent(-100)
        cursor.mergeBlockFormat(fmt)

    def search(self):
        to_search = self.search_line_edit.text()
        
        if not to_search:
            self.detail_text_edit.setPlainText(self.content)
            return

        content_list = self.content.split("\n")

        searched_content = []

        for line in content_list:
            if to_search.lower() in line.lower():
                searched_content.append(line)
            # elif line == "" and not searched_content[-1] == "":
            elif line == "":
                if searched_content and not searched_content[-1] == "":
                    searched_content.append(line)

        searched_content = "\n".join(searched_content)
        self.detail_text_edit.setPlainText(searched_content)

        def add_selection():
            sel = self.detail_text_edit.ExtraSelection()
            sel.cursor = cursor
            sel.format = fmt
            selections.append(sel)

        selections = []
        doc = self.detail_text_edit.document()
        fmt = QTextCharFormat()
        fmt.setBackground(QColor(0,128,0))
        cursor = QTextCursor()
        while True:
            cursor = doc.find(to_search, cursor)
            if cursor.isNull() or cursor.atEnd():
                if cursor.atEnd():
                    if cursor.selectedText() == to_search:
                        add_selection()
                break
            add_selection()
        self.detail_text_edit.setExtraSelections(selections)