// Type definitions for tabtab 0.0.4
// Project: https://github.com/mklabs/node-tabtab
// Definitions by: Vojtěch Habarta <https://github.com/vojtechhabarta>
// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped

declare module "tabtab" {

    /**
     * Main completion method, has support for installation and actual completion.
     * @param name Name of the command to complete.
     * @param cb Get called when a tab-completion command happens.
     */
    export function complete(name: string, cb: CallBack): void;

    /**
     * Main completion method, has support for installation and actual completion.
     * @param name Name of the command to complete.
     * @param completer Name of the command to call on completion.
     * @param cb Get called when a tab-completion command happens.
     */
    export function complete(name: string, completer: string, cb: CallBack): void;

    /**
     * Simple helper function to know if the script is run in the context of a completion command.
     */
    export function isComplete(): boolean;

    /**
     * Helper to return the list of short and long options, parsed from the usual --help output of a command (cake/rake -H, vagrant, commander -h, optimist.help(), ...).
     */
    export function parseOut(str: string): { shorts: string[]; longs: string[] };

    /**
     * Same purpose as parseOut, but for parsing tasks from an help command (cake/rake -T, vagrant, etc.).
     */
    export function parseTasks(str: string, prefix: string, reg?: RegExp|string): string[];

    /**
     * Helper to return completion output and log to standard output.
     * @param values Array of values to complete against.
     * @param data The data object returned by the complete callback, used mainly to filter results accordingly upon the text that is supplied by the user.
     * @param prefix A prefix to add to the completion results, useful for options to add dashes (eg. - or --).
     */
    export function log(values: string[], data: Data, prefix?: string): void;

    interface CallBack {
        (error?: Error, data?: Data, text?: string): any;
    }

    /**
     * Holds interesting values to drive the output of the completion.
     */
    interface Data {

        /**
         * full command being completed
         */
        line: string;

        /**
         * number of words
         */
        words: number;

        /**
         * cursor position
         */
        point: number;

        /**
         * tabing in the middle of a word: foo bar baz bar foobarrrrrrr
         */
        partial: string;

        /**
         * last word of the line
         */
        last: string;

        /**
         * last partial of the line
         */
        lastPartial: string;

        /**
         * the previous word
         */
        prev: string;
    }

}