from itertools import chain

import demistomock as demisto
from CommonServerPython import *


def convert_to_table(context_results: str) -> CommandResults:
    """
    Args:
        context_results (str): String representing a list of comment entries.

    Returns:
        CommandResults: CommandResults object containing only readable_output
    """

    comment_entries = list(json.loads(context_results))

    md = tableToMarkdown(
        "",
        comment_entries,
        headers=[*dict.fromkeys(chain.from_iterable(comment_entries))],
        removeNull=True,
        sort_headers=False,
        headerTransform=pascalToSpace,
    )

    return CommandResults(readable_output=md)


def main():  # pragma: no cover
    try:
        if context := dict_safe_get(
            demisto.callingContext,
            ["context", "Incidents", 0, "CustomFields", "jiracomment"],
            {},
        ):
            return_results(convert_to_table(context))
        else:
            return CommandResults(readable_output="No data to present")

    except Exception as exc:
        return_error(f"Failed to execute JiraV3ConvertCommentsToTable. Error: {exc}")


if __name__ in ("__main__", "__builtin__", "builtins"):
    main()