from inscriptis import get_text
import os


class Article:
    def __init__(self, articleObj):
        self.text = get_text(articleObj["summary"]["content"])
        self.title = articleObj["title"]
        self.currentPageNumber = 1
        terminal_width, terminal_height = os.get_terminal_size()
        terminal_width -= 60
        terminal_height -= 1
        start_of_chunk = 0
        end_of_chunk = 0
        rows_passed = 0
        self.chunks = []
        i = 0
        column_position = 0
        for s in self.text:
            i += 1
            column_position += 1
            if column_position > terminal_width or s == "\n":
                rows_passed += 1
                column_position = 0
                if rows_passed > terminal_height - 2:
                    end_of_chunk = i
                    self.chunks.append(self.text[start_of_chunk:end_of_chunk])
                    start_of_chunk = end_of_chunk
                    rows_passed = 0
        if end_of_chunk <= i:
            self.chunks.append(self.text[start_of_chunk:i])
        self.firstPage = self.chunks[0]
        self.numberOfPages = len(self.chunks)

    def scrollDown(self):
        if self.currentPageNumber == self.numberOfPages:
            pass
        else:
            self.currentPageNumber += 1
        print(self.currentPageNumber)
        return self.chunks[self.currentPageNumber - 1]

    def scrollUp(self):
        if self.currentPageNumber == 1:
            pass
        else:
            self.currentPageNumber -= 1
        print(self.currentPageNumber)
        return self.chunks[self.currentPageNumber - 1]