import curses

insert_char_at_position = lambda string, char, position: string[:position] + char + string[position:]
remove_char_at_position = lambda string, position: string[:position] + string[position+1:]
split_list = lambda input_list, chunk_size: [input_list[i:i + chunk_size] for i in range(0, len(input_list), chunk_size)]

class Editor():
    def __init__(self,stdscr,file=str) -> None:
        self.stdscr = stdscr
        self.x = 0
        self.y = 0
        self.tx,self.ty = curses.COLS ,curses.LINES
        self.text_content = self.get_content(file)
        self.lines = len(self.text_content)
        self.pages = self.make_pages(self.text_content)
        self.page = 0 

    def handle_keys(self):
        key = self.stdscr.getch()
        if key == curses.KEY_UP:
            self.y = max(0, self.y - 1)
            if self.y == 0 and self.page != 0:
                self.page -= 1
                self.y = self.ty-2
        elif key == curses.KEY_DOWN:
            self.y = min(self.ty - 1, self.y + 1)
            if self.y == self.ty - 1 and self.page < len(self.pages) - 1:
                self.page += 1
                self.y = 0
        elif key == curses.KEY_LEFT:
            self.x = max(0, self.x - 1)
        elif key == curses.KEY_RIGHT:
            self.x = min(len(self.text_content[self.y]), self.x + 1)
        elif key == curses.KEY_BACKSPACE:
            if self.x > 0:
                self.pages[self.page][self.y] = remove_char_at_position(
                    self.pages[self.page][self.y],
                    self.x - 1
                    )
                self.x -= 1
        elif key == curses.KEY_ENTER:
            # Neue leere Zeile einfügen
            self.new_line()
        elif key != curses.ERR:
            self.pages[self.page][self.y] = insert_char_at_position(
                self.pages[self.page][self.y],
                str(self.pages[self.page]),#chr(key),
                self.x
                )
            self.x += 1
    
#def make_pages(self, content):
#    return split_list(content, self.ty-1)



    def get_content(self,file):
        try:
            with open(file) as content:
                return content.readlines()
        except FileNotFoundError:
            return ["no data found","please check path"]

    def make_pages(self,content):
        #pages = []
        #page = []
        #for line in content:
        #    if len(page) >= self.ty - 1:
        #        pages.append(page)
        #        page = []
        #    page.append(line)
        #if page:
        #    pages.append(page)
        #return pages

        return split_list(content, self.ty-1)

    def print_data(self):
        self.stdscr.clear()
        for i, line in enumerate(self.pages[self.page]):
            self.stdscr.addstr(i, 0, f"{line}")#{i+self.ty*self.page} - 
        self.stdscr.refresh()

    def set_cursor_position(self):
        self.stdscr.move(self.y, self.x)
    def new_line(self):
        self.pages[self.page].insert(self.y + 1, "")
        self.pages = self.make_pages(sum(self.pages, []))  # Seiten neu erstellen
        self.print_data()
        self.y += 1  # Die Position nach unten verschieben, um die neu eingefügte Zeile anzuzeigen
    def del_line(self):
        pass


def main(stdscr):
    file_name = "/home/megamichi/Schreibtisch/coding/terminal/test.txt"
    editor = Editor(stdscr, file_name)
    curses.curs_set(1)
    while True:
        editor.print_data()
        editor.set_cursor_position()
        editor.handle_keys()

if __name__ == "__main__":
    curses.wrapper(main)