import { cloneDeep } from "lodash";
import { useTranslation } from "react-i18next";
import FileSaver from "file-saver";
import type { IFormatter, IFormatterValueType } from "@patternfly/react-table";
import { unflatten, flatten } from "flat";

import type ClientRepresentation from "@keycloak/keycloak-admin-client/lib/defs/clientRepresentation";
import type { ProviderRepresentation } from "@keycloak/keycloak-admin-client/lib/defs/serverInfoRepesentation";
import type KeycloakAdminClient from "@keycloak/keycloak-admin-client";

import {
  arrayToAttributes,
  attributesToArray,
  KeyValueType,
} from "./components/attribute-form/attribute-convert";
import {
  convertToMultiline,
  toValue,
} from "./components/multi-line-input/multi-line-convert";

export const sortProviders = (providers: {
  [index: string]: ProviderRepresentation;
}) => {
  return [...new Map(Object.entries(providers).sort(sortProvider)).keys()];
};

const sortProvider = (
  a: [string, ProviderRepresentation],
  b: [string, ProviderRepresentation]
) => {
  let s1, s2;
  if (a[1].order !== b[1].order) {
    s1 = b[1].order;
    s2 = a[1].order;
  } else {
    s1 = a[0];
    s2 = b[0];
  }
  if (s1 < s2) {
    return -1;
  } else if (s1 > s2) {
    return 1;
  } else {
    return 0;
  }
};

export const exportClient = (client: ClientRepresentation): void => {
  const clientCopy = cloneDeep(client);
  delete clientCopy.id;

  if (clientCopy.protocolMappers) {
    for (let i = 0; i < clientCopy.protocolMappers.length; i++) {
      delete clientCopy.protocolMappers[i].id;
    }
  }

  FileSaver.saveAs(
    new Blob([prettyPrintJSON(clientCopy)], {
      type: "application/json",
    }),
    clientCopy.clientId + ".json"
  );
};

export const toUpperCase = <T extends string>(name: T) =>
  (name.charAt(0).toUpperCase() + name.slice(1)) as Capitalize<T>;

const isAttributesObject = (value: any) => {
  return (
    Object.values(value).filter(
      (value) => Array.isArray(value) && value.length === 1
    ).length !== 0
  );
};

const isAttributeArray = (value: any) => {
  if (!Array.isArray(value)) {
    return false;
  }
  return value.filter((e) => e.key && e.value).length !== 0;
};

const isEmpty = (obj: any) => Object.keys(obj).length === 0;

export const convertToFormValues = (
  obj: any,
  setValue: (name: string, value: any) => void,
  multiline?: string[]
) => {
  Object.entries(obj).map(([key, value]) => {
    if (key === "attributes" && isAttributesObject(value)) {
      setValue(key, attributesToArray(value as Record<string, string[]>));
    } else if (key === "config" || key === "attributes") {
      setValue(key, !isEmpty(value) ? unflatten(value) : undefined);
    } else if (multiline?.includes(key)) {
      setValue(key, convertToMultiline(value as string[]));
    } else {
      setValue(key, value);
    }
  });
};

export function convertFormValuesToObject<T>(
  obj: T,
  multiline: string[] | undefined = []
): Omit<T, typeof multiline[number] | "attributes" | "config"> {
  const result: any = {};
  Object.entries(obj).map(([key, value]) => {
    if (isAttributeArray(value)) {
      result[key] = arrayToAttributes(value as KeyValueType[]);
    } else if (multiline.includes(key)) {
      result[key] = toValue(value);
    } else if (key === "config" || key === "attributes") {
      result[key] = flatten(value as Record<string, any>, { safe: true });
    } else {
      result[key] = value;
    }
  });
  return result;
}

export const emptyFormatter =
  (): IFormatter => (data?: IFormatterValueType) => {
    return data ? data : "—";
  };

export const upperCaseFormatter =
  (): IFormatter => (data?: IFormatterValueType) => {
    const value = data?.toString();

    return (value ? toUpperCase(value) : undefined) as string;
  };

export const getBaseUrl = (adminClient: KeycloakAdminClient) => {
  return (
    (adminClient.keycloak
      ? adminClient.keycloak.authServerUrl!
      : adminClient.baseUrl) + "/"
  );
};

export const emailRegexPattern =
  /^(([^<>()[\]\\.,;:\s@"]+(\.[^<>()[\]\\.,;:\s@"]+)*)|(".+"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/;

export const forHumans = (seconds: number) => {
  const { t } = useTranslation();

  const levels: [
    [number, string],
    [number, string],
    [number, string],
    [number, string],
    [number, string]
  ] = [
    [Math.floor(seconds / 31536000), t("common:times.years")],
    [Math.floor((seconds % 31536000) / 86400), t("common:times.days")],
    [
      Math.floor(((seconds % 31536000) % 86400) / 3600),
      t("common:times.hours"),
    ],
    [
      Math.floor((((seconds % 31536000) % 86400) % 3600) / 60),
      t("common:times.minutes"),
    ],
    [(((seconds % 31536000) % 86400) % 3600) % 60, t("common:times.seconds")],
  ];
  let returntext = "";

  for (let i = 0, max = levels.length; i < max; i++) {
    if (levels[i][0] === 0) continue;
    returntext +=
      " " +
      levels[i][0] +
      " " +
      (levels[i][0] === 1
        ? levels[i][1].substr(0, levels[i][1].length - 1)
        : levels[i][1]);
  }
  return returntext.trim();
};

export const interpolateTimespan = (forHumans: string) => {
  const { t } = useTranslation();
  const timespan = forHumans.split(" ");

  if (timespan[1] === "Years") {
    return t(`realm-settings:convertedToYearsValue`, {
      convertedToYears: forHumans,
    });
  }

  if (timespan[1] === "Days") {
    return t(`realm-settings:convertedToDaysValue`, {
      convertedToYears: forHumans,
    });
  }

  if (timespan[1] === "Hours") {
    return t(`realm-settings:convertedToHoursValue`, {
      convertedToHours: forHumans,
    });
  }

  if (timespan[1] === "Minutes") {
    return t(`realm-settings:convertedToMinutesValue`, {
      convertedToMinutes: forHumans,
    });
  }

  if (timespan[1] === "Seconds") {
    return t(`realm-settings:convertedToSecondsValue`, {
      convertedToSeconds: forHumans,
    });
  }
};

export const KEY_PROVIDER_TYPE = "org.keycloak.keys.KeyProvider";

export const prettyPrintJSON = (value: any) => JSON.stringify(value, null, 2);