import random
import re
import copy

def get_prompt_parameters(user_message, settings):
    params          = {}
    params          = settings["defaults"].copy()

    mutable_string = user_message
    mutable_string = re.sub(r"[^A-Za-z0-9 \-,\.>]", "", mutable_string)
    mutable_string = re.sub(r"\s{1,}", " ", mutable_string)

    # Get the options from the mutable string:
    options     = ""
    options_re  = r"^((.+)>)"
    match       = re.search(options_re, mutable_string)
    if match is not None:
        options         = match.group(2).strip()
        mutable_string  = re.sub(options_re, "", mutable_string)


    # Get the repeat_n_times from the mutable string:
    repeat_re = r"( x([0-9]{1,2}))$"
    match       = re.search(repeat_re, mutable_string)
    if match is not None:
        params["repeat_n_times"]    = int(match.group(2).strip())
        mutable_string              = re.sub(repeat_re, "", mutable_string)


    # Get the negative prompt from the mutable string:
    negative_re = r"( -(.+))$"
    match       = re.search(negative_re, mutable_string)
    if match is not None:
        params["negative"]  = match.group(2).strip()
        mutable_string      = re.sub(negative_re, "", mutable_string)

    params["positive"] = mutable_string.strip()

    overwrite_re = r"([A-Za-z_]{1,})=?([0-9\.]{1,})"
    for (k, v) in re.findall(overwrite_re, options):
        params[k] = float(v)

    # Process limitations, e.g. max_width and max_height:
    params_clone = copy.deepcopy(params)

    for key in params.keys():
        limit_value = params[key]

        term = "min_"
        if re.search(rf"^{term}", key):
            target_key = re.sub(rf"^{term}", "", key)
            if target_key not in params.keys():
                params_clone[target_key] = limit_value
            params_clone[target_key] = limit_value if params[target_key] < limit_value else params[target_key]

        term = "max_"
        if re.search(rf"^{term}", key):
            target_key = re.sub(rf"^{term}", "", key)
            if target_key in params.keys():
                params_clone[target_key] = limit_value if params[target_key] > limit_value else params[target_key]

        term = "force_"
        if re.search(rf"^{term}", key):
            target_key = re.sub(rf"^{term}", "", key)
            params_clone[target_key] = limit_value

    params = params_clone

    print(params)

    return params