// Type definitions for LuCI
// Documentation: http://openwrt.github.io/luci/jsapi/LuCI.html
// Definitions by: Xingwang Liao <https://github.com/kuoruan>
// TypeScript Version: 3.8

import BC from "./baseclass";
import D from "./dom";
import F from "./form";
import FS from "./fs";
import N from "./network";
import P from "./poll";
import R from "./request";
import RPC from "./rpc";
import S from "./session";
import UCI from "./uci";
import U from "./ui";
import VA from "./validation";
import V from "./view";
import XHR from "./xhr";

export as namespace LuCI;
export = LuCI;

/**
 * This is the LuCI base class. It is automatically instantiated and accessible
 * using the global `L` variable.
 */
declare class LuCI extends BC {
  constructor(env: object);

  /**
   * Legacy `L.Class` class alias.
   *
   * @deprecated New view code should use `'require baseclass'`; to request the
   * `LuCI.baseclass` class.
   */
  Class: typeof LuCI.baseclass;

  /**
   * Legacy `L.dom` class alias.
   *
   * @deprecated New view code should use `'require dom'`; to request the
   * `LuCI.dom` class.
   */
  dom: typeof LuCI.dom;

  /**
   * The `env` object holds environment settings used by LuCI, such as request
   * timeouts, base URLs etc.
   */
  env: {
    base_url: string;
    cgi_base: string;
    documentroot: string;
    media: string;
    nodespec: {
      readonly: boolean;
      satisfied: boolean;
    };
    pollinterval: number;
    requestpath: string;
    resource_version: string;
    resource: string;
    scriptname: string;
    sessionid: string;
    token: string;
    ubuspath: string;
    [key: string]: any;
  };

  /**
   * Legacy `L.Poll` class alias.
   *
   * @deprecated New view code should use `'require poll'`; to request the
   * `LuCI.poll` class.
   */
  Poll: typeof LuCI.poll;

  /**
   * Legacy `L.Request` class alias.
   *
   * @deprecated New view code should use `'require request'`; to request the
   * `LuCI.request` class.
   */
  Request: typeof LuCI.request;

  /**
   * Legacy `L.view` class alias.
   *
   * @deprecated New view code should use `'require view'`; to request the
   * `LuCI.view` class.
   */
  view: typeof LuCI.view;

  /**
   * Return a bound function using the given `self` as `this` context and any
   * further arguments as parameters to the bound function.
   *
   * @param fn - The function to bind.
   * @param self - The value to bind as `this` context to the specified
   * function.
   * @param args - repeatable. Zero or more variable arguments which are bound
   * to the function as parameters.
   *
   * @returns Returns the bound function.
   */
  bind<T, F extends (this: T, ...args: any[]) => any>(
    fn: F,
    self: T,
    ...args: any[]
  ): (...args: any[]) => any;

  /**
   * A wrapper around `raise()` which also renders the error either as modal
   * overlay when `ui.js` is already loaed or directly into the view body.
   *
   * @param type - Either a string specifying the type of the error to throw or
   * an existing `Error` instance to copy.
   * @param fmt - A format string which is used to form the error message,
   * together with all subsequent optional arguments.
   * @param args - repeatable. Zero or more variable arguments to the supplied
   * format string.
   *
   * @throws Throws the created error object with the captured stack trace
   * appended to the message and the type set to the given type argument or
   * copied from the given error instance.
   */
  error(type?: Error | string, fmt?: string, ...args: any[]): void;

  /**
   * Construct an absolute filesystem path relative to the server document root.
   *
   * @param parts - repeatable. An array of parts to join into a path.
   *
   * @returns Return the joined path.
   */
  fspath(...parts: string[]): string;

  /**
   * Issues a GET request to the given url and invokes the specified callback
   * function. The function is a wrapper around `Request.request()`.
   *
   * @param url - The URL to request.
   * @param args - Additional query string arguments to append to the URL.
   * @param cb - The callback function to invoke when the request finishes.
   *
   * @returns Returns a promise resolving to `null` when concluded.
   *
   * @deprecated Use `LuCI.request.get()`.
   */
  get(
    url: string,
    args?: { [key: string]: string },
    cb?: LuCI.requestCallbackFn
  ): Promise<null>;
  get(url: string, cb?: LuCI.requestCallbackFn): Promise<null>;

  /**
   * Deprecated wrapper around `Poll.stop()`.
   *
   * @returns Returns `true` when the polling loop has been stopped or `false`
   * when it didn't run to begin with.
   *
   * @deprecated Use `LuCI.poll.stop()`.
   */
  halt(): boolean;

  /**
   * Test whether a particular system feature is available, such as hostapd SAE
   * support or an installed firewall. The features are queried once at the
   * beginning of the LuCI session and cached in `SessionStorage` throughout the
   * lifetime of the associated tab or browser window.
   *
   * @param feature - The feature to test. For detailed list of known feature
   * flags, see `/modules/luci-base/root/usr/libexec/rpcd/luci`.
   * @param subfeature - Some feature classes like `hostapd` provide sub-feature
   * flags, such as `sae` or `11w` support. The `subfeature` argument can be
   * used to query these.
   *
   * @returns Return `true` if the queried feature (and sub-feature) is
   * available or `false` if the requested feature isn't present or known.
   * Return `null` when a sub-feature was queried for a feature which has no
   * sub-features.
   */
  hasSystemFeature(feature: string, subfeature?: string): boolean | null;

  /**
   * Check whether a view has sufficient permissions.
   *
   * @returns Returns `null` if the current session has no permission at all to
   * load resources required by the view. Returns `false` if readonly
   * permissions are granted or `true` if at least one required ACL group is
   * granted with write permissions.
   */
  hasViewPermission(): boolean | null;

  /**
   * Tests whether the passed argument is a JavaScript object. This function is
   * meant to be an object counterpart to the standard `Array.isArray()`
   * function.
   *
   * @param val - The value to test
   *
   * @returns Returns `true` if the given value is of type object and not
   * `null`, else returns `false`.
   */
  isObject(val?: any): boolean;

  /**
   * Return the complete URL path to the current view.
   *
   * @returns Returns the URL path to the current view.
   */
  location(): string;

  /**
   * Construct an URL path relative to the media resource path of the LuCI ui
   * (usually `/luci-static/$theme_name`).
   *
   * The resulting URL is guaranteed to only contain the characters `a-z`,
   * `A-Z`, `0-9`, `_`, `.`, `%`, `,`, `;`, and `-` as well as `/` for the path
   * separator.
   *
   * @param parts - An array of parts to join into an URL path. Parts may
   * contain slashes and any of the other characters mentioned above.
   *
   * @returns Returns the resulting URL path.
   */
  media(...parts: string[]): string;

  /**
   * Construct a relative URL path from the given prefix and parts. The
   * resulting URL is guaranteed to only contain the characters `a-z`, `A-Z`,
   * `0-9`, `_`, `.`, `%`, `,`, `;`, and `-` as well as `/` for the path
   * separator.
   *
   * @param prefix - The prefix to join the given parts with. If the `prefix` is
   * omitted, it defaults to an empty string.
   * @param parts - An array of parts to join into an URL path. Parts may
   * contain slashes and any of the other characters mentioned above.
   *
   * @returns Return the joined URL path.
   */
  path(prefix: string, ...parts: string[]): string;

  /**
   * Register a polling HTTP request that invokes the specified callback
   * function. The function is a wrapper around `Request.poll.add()`.
   *
   * @param interval - The poll interval to use. If set to a value less than or
   * equal to 0, it will default to the global poll interval configured in
   * `LuCI.env.pollinterval`.
   * @param url - The URL to request.
   * @param args - Specifies additional arguments for the request. For GET
   * requests, the arguments are appended to the URL as query string, for POST
   * requests, they'll be added to the request body.
   * @param cb - The callback function to invoke whenever a request finishes.
   * @param post - When set to `false` or not specified, poll requests will be
   * made using the GET method. When set to `true`, POST requests will be
   * issued. In case of POST requests, the request body will contain an argument
   * `token` with the current value of `LuCI.env.token` by default, regardless
   * of the parameters specified with `args`.
   *
   * @returns Returns the internally created function that has been passed to
   * `Request.poll.add()`. This value can be passed to `Poll.remove()` to remove
   * the polling request.
   *
   * @deprecated Use `LuCI.request.poll.add()`.
   */
  poll(
    interval: number,
    url: string,
    args: object,
    cb: LuCI.requestCallbackFn,
    post: boolean
  ): Function;
  poll(interval: number, url: string, cb: LuCI.requestCallbackFn): Function;

  /**
   * Issues a POST request to the given url and invokes the specified callback
   * function. The function is a wrapper around `Request.request()`. The request
   * is sent using `application/x-www-form-urlencoded` encoding and will contain
   * a field `token` with the current value of `LuCI.env.token` by default.
   *
   * @param url - The URL to request.
   * @param args - Additional post arguments to append to the request body.
   * @param cb - The callback function to invoke when the request finishes.
   *
   * @returns Returns a promise resolving to null when concluded.
   *
   * @deprecated Use `LuCI.request.post()`
   */
  post(
    url: string,
    args?: { [key: string]: string },
    cb?: LuCI.requestCallbackFn
  ): Promise<null>;
  post(url: string, cb?: LuCI.requestCallbackFn): Promise<null>;

  /**
   * Captures the current stack trace and throws an error of the specified type
   * as a new exception. Also logs the exception as error to the debug console
   * if it is available.
   *
   * @param type - Either a string specifying the type of the error to throw or
   * an existing `Error` instance to copy.
   * @param fmt - A format string which is used to form the error message,
   * together with all subsequent optional arguments.
   * @param args - repeatable. Zero or more variable arguments to the supplied
   * format string.
   *
   * @throws Throws the created error object with the captured stack trace
   * appended to the message and the type set to the given type argument or
   * copied from the given error instance. {@link core-library#Error | Error}
   */
  raise(type?: Error | string, fmt?: string, ...args: any[]): void;

  /**
   * Load an additional LuCI JavaScript class and its dependencies, instantiate
   * it and return the resulting class instance. Each class is only loaded once.
   * Subsequent attempts to load the same class will return the already
   * instantiated class.
   *
   * @param name - The name of the class to load in dotted notation. Dots will
   * be replaced by spaces and joined with the runtime-determined base URL of
   * LuCI.js to form an absolute URL to load the class file from.
   *
   * @throws Throws {@link DependencyError} when the class to load includes
   * circular dependencies.
   * @throws Throws {@link NetworkError} when the underlying `LuCI.request` call
   * failed.
   * @throws Throws {@link SyntaxError} when the loaded class file code cannot
   * be interpreted by `eval`.
   * @throws Throws {@link TypeError} when the class file could be loaded and
   * interpreted, but when invoking its code did not yield a valid class
   * instance.
   *
   * @returns Returns the instantiated class.
   */
  require<T extends LuCI.baseclass = LuCI.baseclass>(name: string): Promise<T>;

  /**
   * Returns a promise resolving with either the given value or or with the
   * given default in case the input value is a rejecting promise.
   *
   * @param value - The value to resolve the promise with.
   * @param defvalue - The default value to resolve the promise with in case the
   * given input value is a rejecting promise.
   *
   * @returns Returns a new promise resolving either to the given input value or
   * to the given default value on error.
   */
  resolveDefault<T = any>(value: Promise<T>, defvalue?: T): Promise<T>;

  /**
   * Construct an URL path relative to the global static resource path of the
   * LuCI ui (usually `/luci-static/resources`).
   *
   * The resulting URL is guaranteed to only contain the characters `a-z`,
   * `A-Z`, `0-9`, `_`, `.`, `%`, `,`, `;`, and `-` as well as `/` for the path
   * separator.
   *
   * @param parts - An array of parts to join into an URL path. Parts may
   * contain slashes and any of the other characters mentioned above.
   *
   * @returns Returns the resulting URL path.
   */
  resource(...parts: any[]): string;

  /**
   * Deprecated wrapper around `Poll.start()`.
   *
   * @returns Returns true when the polling loop has been started or false when
   * it was already running.
   *
   * @deprecated Use `LuCI.poll.start()`.
   */
  run(): string;

  /**
   * Return an array of sorted object keys, optionally sorted by a different key
   * or a different sorting mode.
   *
   * @param obj - The object to extract the keys from. If the given value is not
   * an object, the function will return an empty array.
   * @param key - Specifies the key to order by. This is mainly useful for
   * nested objects of objects or objects of arrays when sorting shall not be
   * performed by the primary object keys but by some other key pointing to a
   * value within the nested values.
   * @param sortmode - May be either `addr` or `num` to override the natural
   * lexicographic sorting with a sorting suitable for IP/MAC style addresses or
   * numeric values respectively.
   *
   * @returns Returns an array containing the sorted keys of the given object.
   */
  sortedKeys(obj: object, key?: string, sortmode?: string): string[];

  /**
   * Deprecated wrapper around `Poll.remove()`.
   *
   * @param entry - The polling function to remove.
   *
   * @returns Returns `true` when the function has been removed or `false` if it
   * could not be found.
   *
   * @deprecated Use `LuCI.poll.remove()`.
   */
  stop(entry: Function): boolean;

  /**
   * Converts the given value to an array. If the given value is of type array,
   * it is returned as-is, values of type object are returned as one-element
   * array containing the object, empty strings and null values are returned as
   * empty array, all other values are converted using String(), trimmed, split
   * on white space and returned as array.
   *
   * @param val - The value to convert into an array.
   *
   * @returns Returns the resulting array.
   */
  toArray<T>(val: any): T[];

  /**
   * Construct an URL pathrelative to the script path of the server side LuCI
   * application (usually `/cgi-bin/luci`).
   *
   * The resulting URL is guaranteed to only contain the characters `a-z`,
   * `A-Z`, `0-9`, `_`, `.`, `%`, `,`, `;`, and `-` as well as `/` for the path
   * separator.
   *
   * @param parts - An array of parts to join into an URL path. Parts may
   * contain slashes and any of the other characters mentioned above.
   *
   * @returns Returns the resulting URL path.
   */
  url(...parts: string[]): string;
}

declare namespace LuCI {
  /**
   * The request callback function is invoked whenever an HTTP reply to a
   * request made using the `L.get()`, `L.post()` or `L.poll()` function is
   * timed out or received successfully.
   *
   * @param xhr - The XMLHTTPRequest instance used to make the request.
   * @param data - The response JSON if the response could be parsed as such,
   * else `null`.
   * @param duration - The total duration of the request in milliseconds.
   */
  type requestCallbackFn = (
    xhr: XMLHttpRequest,
    data: any,
    duration: number
  ) => void;

  /**
   * The `Headers` class is an internal utility class exposed in HTTP response
   * objects using the `response.headers` property.
   */
  class headers extends BC {
    /**
     * Returns the value of the given header name. Note: Header-Names are
     * case-insensitive.
     *
     * @param name - The header name to read
     *
     * @returns The value of the given header name or `null` if the header isn't
     * present.
     */
    get(name: string): string | null;

    /**
     * Checks whether the given header name is present.
     *
     * @remarks Header-Names are case-insensitive.
     *
     * @param name - The header name to check
     *
     * @returns Returns `true` if the header name is present, `false` otherwise
     */
    has(name: string): boolean;
  }

  /**
   * The `Response` class is an internal utility class representing HTTP
   * responses.
   */
  class response extends BC {
    /**
     * The total duration of the HTTP request in milliseconds
     */
    duration: number;

    /**
     * The HTTP headers of the response
     */
    headers: headers;

    /**
     * Describes whether the response is successful (status codes `200..299`) or
     * not
     */
    ok: boolean;

    /**
     * The numeric HTTP status code of the response
     */
    status: number;

    /**
     * The HTTP status description message of the response
     */
    statusText: string;

    /**
     * The final URL of the request, i.e. after following redirects.
     */
    url: string;

    /**
     * Access the response content as blob.
     *
     * @returns The response content as blob.
     */
    blob(): Blob;

    /**
     * Clones the given response object, optionally overriding the content of
     * the cloned instance.
     *
     * @param content - Override the content of the cloned response. Object
     * values will be treated as JSON response data, all other types will be
     * converted using `String()` and treated as response text.
     *
     * @returns The cloned `Response` instance.
     */
    clone(content?: any): response;

    /**
     * Access the response content as JSON data.
     *
     * @throws Throws `SyntaxError` if the content isn't valid JSON.
     *
     * @returns The parsed JSON data.
     */
    json(): any;

    /**
     * Access the response content as string.
     *
     * @returns The response content.
     */
    text(): string;
  }

  export import baseclass = BC;
  export import dom = D;
  export import form = F;
  export import fs = FS;
  export import network = N;
  export import poll = P;
  export import request = R;
  export import rpc = RPC;
  export import session = S;
  export import uci = UCI;
  export import ui = U;
  export import validation = VA;
  export import view = V;
  export import xhr = XHR;

  /**
   * Alias for baseclass
   */
  export import Class = BC;
}