youtubeSearch.py

'''
find artists on youtube  using beautifulsoup4 library
'''
import time
import requests #-- found at docs.python-requests.org
from bs4 import BeautifulSoup #--found at https://www.crummy.com/software/BeautifulSoup/bs4/doc/

youtube_api_v3_key='AIzaSyALTsGjGJz0LDgYCw5jI7SltfQbUTRUUl0' #used to access youtube api for music duation
def get_vid_link(artist):
	'''this function takesin a string and search youtube for that string. it gets the first link on the page and return an id(video id )'''

	url="https://www.youtube.com/results?search_query=" + artist
	response=requests.get(url) #---request.get() is a a funtion from http://docs.python-requests.org/en/master/user/quickstart/#passing-parameters-in-urls

	links=response.text #--coverting response object to text:

#---The code below is a modified version that can be found in the BeatifoulSoup Docs at :----------
	#https://www.crummy.com/software/BeautifulSoup/bs4/doc/

	data=BeautifulSoup(links,'html.parser')
	list_links=[]

	for  tag in data.find_all('a'):#--retrieving every link from the <a> tag in data
		hf=tag.get('href')
		if '/watch?v' in hf:
			list_links.append(hf)
			if len(list_links)==1:
				return(list_links[0]) #--selecting the first link as basedon youtube's relevance filter to input 
				break
#----END of code inspired from https://www.crummy.com/software/BeautifulSoup/bs4/doc/  -------------


def extract_id(link):
	id_sum=link.split('=')
	id=id_sum[1]
	return id 

def lenght_song(vid_id):
	'''this function takes in the id of a vieo and returns the lenght of the vidoe as an interger'''
	vid_id=extract_id(vid_id)
	url="https://www.googleapis.com/youtube/v3/videos?id="+vid_id+"&key="+youtube_api_v3_key+"&part=contentDetails"
	response=requests.get(url)
	response=response.json()
	vid_length=response['items'][0]['contentDetails']['duration']
	vid_length_list=[int(num) for num in vid_length if num.isdigit()]
	total_time=(int(vid_length_list[0])*60)+int((vid_length_list[1]))
	#print(total_time/100)
	return total_time

if __name__ == '__main__':

	print(lenght_song('watch?v=2tJipvjt4w4'))
	t=(lenght_song('watch?v=2tJipvjt4w4'))
	time.sleep(t/100)
	print('time done')