#!/bin/python3

#lumbung.space video feed generator
#c 2021 roel roscam abbing gpvl3 etc

import peertube
import jinja2
import json
import os
import datetime
import shutil
import requests
import ast


#jinja filters & config
def duration(n):
    """
    convert '6655' in '1:50:55'

    """
    return str(datetime.timedelta(seconds = n))

def linebreaks(text):
    if not text:
        return text
    else:
        import re
        br = re.compile(r"(\r\n|\r|\n)")
        return br.sub(r"<br />\n", text)
    

env = jinja2.Environment(
    loader=jinja2.FileSystemLoader(os.path.curdir) 
    )
env.filters['duration'] = duration
env.filters['linebreaks'] = linebreaks

host = 'https://tv.lumbung.space'

configuration = peertube.Configuration(
    host = host+"/api/v1"
)

client = peertube.ApiClient(configuration)  

v = peertube.VideoApi(client)

response = v.videos_get(count=100, filter='local', tags_one_of='publish')

videos = response.to_dict()
videos = videos['data']


def create_post(post_directory, video_metadata):
        global client #lazy
        
        if not os.path.exists(post_dir):
            os.mkdir(post_directory)
        
        preview_image = video_metadata['preview_path'].split('/')[-1]
        
        if not os.path.exists(os.path.join(post_directory, preview_image)):
            #download preview image
            response = requests.get(host+video_metadata['preview_path'], stream=True)
            with open(os.path.join(post_directory, preview_image), 'wb') as img_file:
                shutil.copyfileobj(response.raw, img_file)
                print('got image')
        else:
            print('image exists')

        #replace the truncated description with the full video description
        #peertube api is some broken thing in between a py dict and a json file
        api_response = peertube.VideoApi(client).videos_id_description_get(v['uuid'])
        long_description = ast.literal_eval(api_response) 
        v['description'] = long_description['description']


        with open(os.path.join(post_directory,'index.md'),'w') as f:
            post = template.render(v=video_metadata, host=host, preview_image=preview_image)
            f.write(post)
            print(video_metadata['uuid'], 'written')



output_dir = os.environ.get('OUTPUT_DIR', '/home/r/Programming/lumbung.space/lumbung.space-web/content/video')

if not os.path.exists(output_dir):
    os.mkdir(output_dir)

template = env.get_template('index_template.md')

existing_posts = os.listdir(output_dir)

for v in videos:

    if v['uuid'] not in existing_posts: #if there is a video we dont already have, make it
        post_dir = os.path.join(output_dir,v['uuid'])
        create_post(post_dir, v)

    elif v['uuid'] in existing_posts: # if we already have the video do nothing, possibly update
        print(v['uuid'],'already exists')
        existing_posts.remove(v['uuid']) # create list of posts which have not been returned by peertube

for post in existing_posts: 
    print('deleted', post) #rm posts not returned 
    shutil.rmtree(os.path.join(output_dir,post))