POPULATE_INTENDED_FOR_OPTS = {
    "matching_parameters": "ImagingVolume",
    "criterion": "Closest",
}

def create_key(template, outtype=('nii'), annotation_classes=None):
    if template is None or not template:
        raise ValueError("Template must be a valid format string")
    return (template, outtype, annotation_classes)


def infotodict(seqinfo):
    """Heuristic evaluator for determining which runs belong where

    allowed template fields - follow python string module:

    item: index within category
    subject: participant id
    seqitem: run number during scanning
    subindex: sub index within group
    """
    t1 = create_key("{bids_subject_session_dir}/anat/{bids_subject_session_prefix}_T1w")
    t2 = create_key("{bids_subject_session_dir}/anat/{bids_subject_session_prefix}_T2w")
    run1 = create_key("{bids_subject_session_dir}/func/{bids_subject_session_prefix}_task-fmri_run-01_bold")
    run2 = create_key("{bids_subject_session_dir}/func/{bids_subject_session_prefix}_task-fmri_run-02_bold")

    fmap = create_key(
        "{bids_subject_session_dir}/fmap/{bids_subject_session_prefix}_dir-{dir}_epi"
    )

    info: dict[tuple[str, tuple[str, ...], None], list] = {
        t1: [],
        t2: [],
        run1: [],
        run2: [],
        fmap: [],
    }

    for idx, s in enumerate(seqinfo):
        if (s.dim3 == 208) and (s.dim4 == 1) and ("t1w" in s.protocol_name):
            info[t1] = [s.series_id]
        if (s.dim3 == 208) and ("T2w" in s.protocol_name):
            info[t2] = [s.series_id]
        
        if (s.dim4 == 1) and ("SpinEchoFieldMapAP" in s.protocol_name):
            info[fmap] = [{"item": s.series_id, "dir": "AP"}]
        if (s.dim4 == 1) and ("SpinEchoFieldMapPA" in s.protocol_name):
            info[fmap] = [{"item": s.series_id, "dir": "PA"}]

        if (s.series_files > 350) and ("task-fmri_run-01" in s.protocol_name):
            info[run1] = [s.series_id]
        if (s.series_files > 500) and ("task-fmri_run-02" in s.protocol_name):
            info[run2] = [s.series_id]
    return info