IfcOpenShell/src/bcf/README.md

# bcf

A simple Python implementation of BCF. The data model is described in `data.py`.
Manipulation of BCF-XML is available via `bcfxml.py` and manipulation of BCF-API
is available via `bcfapi.py`.

- BCF-XML version 2.1: Fully supported
- BCF-API version 2.1: Not supported, will probably tackle this after BCF-API v3.0
- BCF-XML version 3.0: Almost fully supported, except for the documents module
- BCF-API version 3.0: Almost fully supported, except for two requests.

## bcfxml

The `bcfxml` module lets you interact with the BCF-XML standard.

```python
from bcf import bcfxml


# Load a project
bcfxml = bcfxml.load("/path/to/file.bcf")


# The project is also stored in the module
# project == bcfxml.project
project=bcfxml.get_project()
print(project.name)

# To edit a project, just modify the object directly
bcfxml.project.name = "New name"
bcfxml.edit_project()

# The BCF file is extracted to this temporary directory
print(bcfxml.filepath)

# Get a dictionary of topics
topics = bcfxml.get_topics()

# Note: topics == bcfxml.topics
for guid, topic in bcfxml.topics.items():
    print("Topic guid is", guid)
    print("Topic guid is", topic.guid)
    print("Topic title is", topic.title)

    # Fetch extra data about a topic
    header = bcfxml.get_header(guid)
    comments = bcfxml.get_comments(guid)
    viewpoints = bcfxml.get_viewpoints(guid)

    # Note: comments == topic.comments, and so on
    for comment_guid, comment in comments.items():
        print(comment_guid)
        print(comment.comment)
        print(comment.author)

# Get a particular topic
topic = bcfxml.get_topic(guid)

# Modify a topic
topic.title = "New title"
bcfxml.edit_topic(topic)
```

## bcfapi

The `bcfapi` module lets you interact with the BCF-API standard.

```python
from bcf.v3.bcfapi import FoundationClient, BcfClient

foundation_client = FoundationClient("YOUR_CLIENT_ID", "YOUR_CLIENT_SECRET", "OPENCDE_BASEURL")
auth_methods = foundation_client.get_auth_methods()

# Our library currently only implements the authorization_code flow
if "authorization_code" in auth_methods:
    foundation_client.login()

bcf_client = BcfClient(foundation_client)

versions = foundation_client.get_versions()
for version in versions:
if "3.0" in versions:
    if version["api_id"] == "bcf" and version["version_id"] == "3.0":
        bcf_client.set_version(version)

data = bcf_client.get_projects()
print(data)
project_id = data[0]["project_id"]
print(project_id)
data = bcf_client.get_project(project_id)
print(data)
data = bcf_client.get_extensions(project_id)
print(data)
```

## Todo List

The remaining work that needs to be completed in `bcfxml.py` and `bcfapi.py`.

- For `bcfxml.py` two xsds support is remaining namely 'documents.xsd`and`extensions.xsd`.
- For `bcfapi.py` two requests that are `get_topics` and `get_comments` are remaining.