import flask
import json
import os
import dotenv
import requests
import atoma

from datetime import datetime

from filelock import Timeout, FileLock

from tqdm import tqdm

dotenv.load_dotenv()

app = flask.Flask("hypopub")

session = requests.session()
token = os.getenv("MICROPUB_TOKEN")
session.headers = {"Authorization": f"Bearer {token}"}

HYPOTHESIS_USER=os.getenv("HYPOTHESIS_USER")

def send_micropub(entry: atoma.atom.AtomEntry):

    # get the json corresponding to the annotation
    json_link = None
    for link in entry.links:
        if (link.rel == 'alternate') and (link.type_ == "application/json"):
            json_link = link.href

    if json_link is None:
        raise Exception("Cannot find json for annotation")

    annotation = requests.get(json_link).json()



    endpoint = os.getenv("MICROPUB_ENDPOINT")
    r = session.post(f"{endpoint}", json={
      "type": ["h-entry"],
      "properties":{
            "published": [entry.published.strftime("%Y-%m-%dT%H:%M:%S")],
            "content":[{
                "html": entry.content.value
            }],
            "category": annotation['tags'] + ['hypothes.is'],
            "in-reply-to": [annotation['target'][0]['source']],
            "hypothesis-link": [json_link]
      }  
    })

    if r.status_code > 300:
        raise Exception(f"Request failed: {r.status_code}: {r.text}")


def main():

    if HYPOTHESIS_USER is None:
        raise Exception("You must set HYPOTHESIS_USER environment variable")

    response = requests.get(f"https://hypothes.is/stream.atom?user={HYPOTHESIS_USER}")
    feed = atoma.parse_atom_bytes(response.content)

    print(f"Processing {feed.title.value}")

    state = {}
    last_run = datetime(1991,1,1).timestamp()

    if os.path.exists("state.json"):
        with open("state.json") as f:
            state = json.load(f)
            last_run = state['last_run']

    
    for entry in tqdm(feed.entries):

        if entry.published.timestamp() > last_run:

            tqdm.write(f"Send micropub payload for '{entry.title.value}'")
            send_micropub(entry)
        else:
            tqdm.write(f"Entry older than last run time: '{entry.title.value}'")
    
    state['last_run'] = datetime.now().timestamp()

    with open("state.json",'w') as f:
        json.dump(state, f)


if __name__ == "__main__":
    main()