#!/usr/bin/env python3
import requests
from bs4 import BeautifulSoup as Soup
import curses
import webbrowser

def main(stdscr):
    stdscr.clear()

    # Query Hacker News API for top stories and their titles/links
    url = 'https://hacker-news.firebaseio.com/v0/topstories.json'
    r = requests.get(url)
    if not r.ok:
        raise Exception('Error fetching data from Hacker News API')
    ids = r.json()[:10]  # Show only the first ten stories
    stories = []
    for i in ids:
        story_url = f'https://hacker-news.firebaseio.com/v0/item/{i}.json'
        s = requests.get(story_url).json()
        try:
            stories.append((s['title'], s['url']))
        except KeyError:
            stories.append((s['title'], 'No link' ))

    # Display list of stories in terminal window with arrow key navigation
    current_pos = 0
    while True:
        stdscr.clear()
        stdscr.addstr('\n\nHacker News Top Stories:\n')
        for i, (title, link) in enumerate(stories):
            prefix = '>>> ' if i == current_pos else '   '
            text = f'{prefix}{i+1}: {title} ({link})\n'
            stdscr.addstr(text)

        stdscr.refresh()
        c = stdscr.getch()
        if c == ord('q'):  # Quit
            break
        elif c == curses.KEY_UP:
            current_pos -= 1
            if current_pos < 0:
                current_pos = len(stories)-1
        elif c == curses.KEY_DOWN:
            current_pos += 1
            if current_pos >= len(stories):
                current_pos = 0
        elif c == curses.KEY_ENTER or c == 10:
            title, link = stories[current_pos]
            print(f'\nOpening link: {link}\n')
            webbrowser.open(link)

curses.wrapper(main)