import math
import random
import re
import string
from typing import Union
from urllib.parse import urlparse

from decouple import config

import schemas
from chalicelib.utils.TimeUTC import TimeUTC


def random_string(length=36):
    return "".join(random.choices(string.hexdigits, k=length))


def list_to_camel_case(items: list[dict], flatten: bool = False) -> list[dict]:
    for i in range(len(items)):
        if flatten:
            items[i] = flatten_nested_dicts(items[i])
        items[i] = dict_to_camel_case(items[i])

    return items


def dict_to_camel_case(variable, delimiter='_', ignore_keys=[]):
    if variable is None:
        return None
    if isinstance(variable, str):
        return variable
    elif isinstance(variable, dict):
        aux = {}
        for key in variable.keys():
            if key in ignore_keys:
                aux[key] = variable[key]
            elif isinstance(variable[key], dict):
                aux[key_to_camel_case(key, delimiter)] = dict_to_camel_case(variable[key])
            elif isinstance(variable[key], list):
                aux[key_to_camel_case(key, delimiter)] = list_to_camel_case(variable[key])
            else:
                aux[key_to_camel_case(key, delimiter)] = variable[key]
        return aux
    else:
        return variable


def dict_to_CAPITAL_keys(variable):
    if variable is None:
        return None
    if isinstance(variable, str):
        return variable.upper()
    elif isinstance(variable, dict):
        aux = {}
        for key in variable.keys():
            if isinstance(variable[key], dict):
                aux[key.upper()] = dict_to_CAPITAL_keys(variable[key])
            else:
                aux[key.upper()] = variable[key]
        return aux
    else:
        return variable


def variable_to_snake_case(variable, delimiter='_', split_number=False):
    if isinstance(variable, str):
        return key_to_snake_case(variable, delimiter, split_number)
    elif isinstance(variable, dict):
        aux = {}
        for key in variable.keys():
            if isinstance(variable[key], dict):
                aux[key_to_snake_case(key, delimiter, split_number)] = variable_to_snake_case(variable[key], delimiter,
                                                                                              split_number)
            else:
                aux[key_to_snake_case(key, delimiter, split_number)] = variable[key]
        return aux
    else:
        return variable


def key_to_camel_case(snake_str, delimiter='_'):
    if snake_str.startswith(delimiter):
        snake_str = snake_str[1:]
    components = snake_str.split(delimiter)
    return components[0] + ''.join(x.title() for x in components[1:])


def key_to_snake_case(name, delimiter='_', split_number=False):
    s1 = re.sub('(.)([A-Z][a-z]+)', fr'\1{delimiter}\2', name)
    return re.sub('([a-z])([A-Z0-9])' if split_number else '([a-z0-9])([A-Z])', fr'\1{delimiter}\2', s1).lower()


TRACK_TIME = True


def allow_captcha():
    return config("captcha_server", default=None) is not None and config("captcha_key", default=None) is not None \
        and len(config("captcha_server")) > 0 and len(config("captcha_key")) > 0


def string_to_sql_like(value):
    if value is None:
        return None
    value = re.sub(' +', ' ', value)
    value = value.replace("*", "%")
    if value.startswith("^"):
        value = value[1:]
    elif not value.startswith("%"):
        value = '%' + value

    if value.endswith("$"):
        value = value[:-1]
    elif not value.endswith("%"):
        value = value + '%'
    # value = value.replace(" ", "%")
    return value


def string_to_sql_like_with_op(value, op):
    if isinstance(value, list):
        r = []
        for v in value:
            r.append(string_to_sql_like_with_op(v, op))
        return r
    else:
        _value = value
        if _value is None:
            return _value
        if op.upper() != 'ILIKE':
            return _value.replace("%", "%%")
        _value = _value.replace("*", "%")
        if _value.startswith("^"):
            _value = _value[1:]
        elif not _value.startswith("%"):
            _value = '%' + _value

        if _value.endswith("$"):
            _value = _value[:-1]
        elif not _value.endswith("%"):
            _value = _value + '%'
        return _value.replace("%", "%%")


likable_operators = [schemas.SearchEventOperator.STARTS_WITH, schemas.SearchEventOperator.ENDS_WITH,
                     schemas.SearchEventOperator.CONTAINS, schemas.SearchEventOperator.NOT_CONTAINS,
                     schemas.ClickEventExtraOperator.STARTS_WITH, schemas.ClickEventExtraOperator.ENDS_WITH,
                     schemas.ClickEventExtraOperator.CONTAINS, schemas.ClickEventExtraOperator.NOT_CONTAINS]


def is_likable(op: Union[schemas.SearchEventOperator, schemas.ClickEventExtraOperator]):
    return op in likable_operators


def values_for_operator(value: Union[str, list],
                        op: Union[schemas.SearchEventOperator, schemas.ClickEventExtraOperator]):
    if not is_likable(op):
        return value
    if isinstance(value, list):
        r = []
        for v in value:
            r.append(values_for_operator(v, op))
        return r
    else:
        if value is None:
            return value
        if op in (schemas.SearchEventOperator.STARTS_WITH, schemas.ClickEventExtraOperator.STARTS_WITH):
            return f"{value}%"
        elif op in (schemas.SearchEventOperator.ENDS_WITH, schemas.ClickEventExtraOperator.ENDS_WITH):
            return f"%{value}"
        elif op in (schemas.SearchEventOperator.CONTAINS, schemas.SearchEventOperator.NOT_CONTAINS,
                    schemas.ClickEventExtraOperator.CONTAINS, schemas.ClickEventExtraOperator.NOT_CONTAINS):
            return f"%{value}%"
    return value


def is_alphabet_space_dash(word):
    r = re.compile("^[a-zA-Z -]*$")
    return r.match(word) is not None


def merge_lists_by_key(l1, l2, key):
    merged = {}
    for item in l1 + l2:
        if item[key] in merged:
            merged[item[key]].update(item)
        else:
            merged[item[key]] = item
    return [val for (_, val) in merged.items()]


def flatten_nested_dicts(obj):
    if obj is None:
        return None
    result = {}
    for key in obj.keys():
        if isinstance(obj[key], dict):
            result = {**result, **flatten_nested_dicts(obj[key])}
        else:
            result[key] = obj[key]
    return result


def delete_keys_from_dict(d, to_delete):
    if isinstance(to_delete, str):
        to_delete = [to_delete]
    if isinstance(d, dict):
        for single_to_delete in set(to_delete):
            if single_to_delete in d:
                del d[single_to_delete]
        for k, v in d.items():
            delete_keys_from_dict(v, to_delete)
    elif isinstance(d, list):
        for i in d:
            delete_keys_from_dict(i, to_delete)
    return d


def explode_widget(data, key=None):
    result = []
    for k in data.keys():
        if k.endswith("Progress") or k == "chart":
            continue
        result.append({"key": key_to_snake_case(k) if key is None else key, "data": {"value": data[k]}})
        if k + "Progress" in data:
            result[-1]["data"]["progress"] = data[k + "Progress"]
        if "chart" in data:
            result[-1]["data"]["chart"] = []
            for c in data["chart"]:
                result[-1]["data"]["chart"].append({"timestamp": c["timestamp"], "value": c[k]})
    return result


def get_issue_title(issue_type):
    return {'click_rage': "Click Rage",
            'dead_click': "Dead Click",
            'excessive_scrolling': "Excessive Scrolling",
            'bad_request': "Bad Request",
            'missing_resource': "Missing Image",
            'memory': "High Memory Usage",
            'cpu': "High CPU",
            'slow_resource': "Slow Resource",
            'slow_page_load': "Slow Page",
            'crash': "Crash",
            'ml_cpu': "High CPU",
            'ml_memory': "High Memory Usage",
            'ml_dead_click': "Dead Click",
            'ml_click_rage': "Click Rage",
            'ml_mouse_thrashing': "Mouse Thrashing",
            'ml_excessive_scrolling': "Excessive Scrolling",
            'ml_slow_resources': "Slow Resource",
            'custom': "Custom Event",
            'js_exception': "Error",
            'custom_event_error': "Custom Error",
            'js_error': "Error",
            "mouse_thrashing": "Mouse Thrashing"}.get(issue_type, issue_type)


def __progress(old_val, new_val):
    return ((old_val - new_val) / new_val) * 100 if new_val > 0 else 0 if old_val == 0 else 100


def __decimal_limit(value, limit):
    factor = pow(10, limit)
    value = math.floor(value * factor)
    if value % factor == 0:
        return value // factor
    return value / factor


def old_search_payload_to_flat(values):
    # in case the old search body was passed
    if values.get("events") is not None:
        for v in values["events"]:
            v["isEvent"] = True
        for v in values.get("filters", []):
            v["isEvent"] = False
        values["filters"] = values.pop("events") + values.get("filters", [])
    return values


def custom_alert_to_front(values):
    # to support frontend format for payload
    if values.get("seriesId") is not None and values["query"]["left"] == schemas.AlertColumn.CUSTOM:
        values["query"]["left"] = values["seriesId"]
        values["seriesId"] = None
    return values


def __time_value(row):
    row["unit"] = schemas.TemplatePredefinedUnits.MILLISECOND
    factor = 1
    if row["value"] > TimeUTC.MS_MINUTE:
        row["value"] = row["value"] / TimeUTC.MS_MINUTE
        row["unit"] = schemas.TemplatePredefinedUnits.MINUTE
        factor = TimeUTC.MS_MINUTE
    elif row["value"] > 1 * 1000:
        row["value"] = row["value"] / 1000
        row["unit"] = schemas.TemplatePredefinedUnits.SECOND
        factor = 1000

    if "chart" in row and factor > 1:
        for r in row["chart"]:
            r["value"] /= factor


def is_saml2_available():
    return config("hastSAML2", default=False, cast=bool)


def get_domain():
    _url = config("SITE_URL")
    if not _url.startswith("http"):
        _url = "http://" + _url
    return '.'.join(urlparse(_url).netloc.split(".")[-2:])


def obfuscate(text, keep_last: int = 4):
    if text is None or not isinstance(text, str):
        return text
    if len(text) <= keep_last:
        return "*" * len(text)
    return "*" * (len(text) - keep_last) + text[-keep_last:]


def cast_session_id_to_string(data):
    if not isinstance(data, dict) and not isinstance(data, list):
        return data
    if isinstance(data, list):
        for i, item in enumerate(data):
            data[i] = cast_session_id_to_string(item)
    elif isinstance(data, dict):
        keys = data.keys()
        if "sessionId" in keys:
            data["sessionId"] = str(data["sessionId"])
        else:
            for key in keys:
                data[key] = cast_session_id_to_string(data[key])
    return data