Posting to Bluesky via API

post.py

#!/usr/bin/env python3

from asyncio import run
from os import environ

from atproto import AsyncClient, client_utils, models

def chunked(text, *, size):
    buf = []
    for ln in text.splitlines():
        if sum(map(len, buf)) + len(ln) >= size:
            yield '\n'.join(buf)
            buf = []
        buf.append(ln)
    yield '\n'.join(buf)

async def main(handle, password, code):
    parts = [*chunked(code, size=290)]
    messages = [
        f'{txt}\n### {idx:02d}/{len(parts):02d}'
        for idx, txt in enumerate(parts, start=1)
    ]

    client = AsyncClient()
    profile = await client.login(handle, password)

    root_ref = last_ref = None
    for msg in messages:
        post = await client.send_post(
            client_utils.TextBuilder().text(msg),
            reply_to=models.AppBskyFeedPost.ReplyRef(parent=last_ref, root=root_ref) if root_ref else None,
        )
        last_ref = models.create_strong_ref(post)
        root_ref = root_ref or last_ref

if __name__ == '__main__':
    with open(__file__) as f:
        code = f.read().replace(' ' * 4, '\t')
    run(main(handle=environ['HANDLE'], password=environ['PASSWORD'], code=code))