#!/usr/bin/env python3

from importlib.metadata import version

from rich._export_format import CONSOLE_SVG_FORMAT as DEFAULT

from yartsu._export_format import CONSOLE_SVG_FORMAT as MODIFIED

MARKDOWN_DOC = """
# Deviation From Rich

## Versions

- Rich: {rich_version}
- Yartsu: {yartsu_version}

## Diff

```diff
{diff}
```

AUTO-GENERATED by code_svg_format_diff.py"""


def unidiff_output(expected, actual):
    """
    Helper function. Returns a string containing the unified diff of two multiline strings.
    """
    # see https://stackoverflow.com/questions/845276/how-to-print-the-comparison-of-two-multiline-strings-in-unified-diff-format

    import difflib

    expected = expected.splitlines(1)
    actual = actual.splitlines(1)

    diff = difflib.unified_diff(expected, actual)

    return "".join(diff)


def main():

    print(
        MARKDOWN_DOC.format(
            rich_version=version("rich"),
            yartsu_version=version("yartsu"),
            diff=unidiff_output(DEFAULT, MODIFIED),
        )
    )


if __name__ == "__main__":
    main()