// Type definitions for graphviz 0.0
// Project: https://github.com/glejeune/node-graphviz
// Definitions by: Matt Frantz <https://github.com/mhfrantz>,
//                 Kamontat Chantrachirathumrong <https://github.com/kamontat>
// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped

export type PossibleValue = string | number | boolean;

export type RenderType = string;

export type RenderEngine = "dot" | "neato" | "circo" | "fdp" | "osage" | "twopi";

export interface Options {
  [key: string]: PossibleValue;
}

export interface HasAttributes {
    set(name: string, value: PossibleValue): void;
    get(name: string): PossibleValue;
}

export interface Node extends HasAttributes {
    readonly id: string;
}

/* tslint:disable-next-line:no-empty-interface */
export interface Edge extends HasAttributes {}

export interface OutputCallback {
    (data: string): void;
}

export interface ErrorCallback {
    (code: number, stdout: string, stderr: string): void;
}

export interface RenderOptions {
  /**
   * graphviz output file type
   */
    type: RenderType;

    /**
     * Graphviz command to use
     * @default dot
     */
    use?: RenderEngine;

    /**
     * Graphviz path
     * @default $PATH
     */
    path?: string;

    /**
     * graph options
     */
    G?: Options;

    /**
     * node options
     */
    N?: Options;

    /**
     * edge options
     */
    E?: Options;
}

export interface Graph extends HasAttributes {
    use: RenderEngine;

    addNode(id: string, attrs?: any): Node;
    nodeCount(): number;

    addEdge(nodeOne: string | Node, nodeTwo: string | Node, attrs?: Options): Edge;

    // Subgraph (cluster) API
    addCluster(id: string): Graph;
    getCluster(id: string): Graph;
    clusterCount(): number;

    setNodeAttribut(name: string, value: any): void;
    getNodeAttribut(name: string): any;

    setEdgeAttribut(name: string, value: any): void;
    getEdgeAttribut(name: string): any;

    // Path containing Graphviz binaries.
    setGraphVizPath(directoryPath: string): void;

    render(type_options: string | RenderOptions, filename_callback: string | OutputCallback, errback?: ErrorCallback): void;
    output(type_options: string | RenderOptions, filename_callback: string | OutputCallback, errback?: ErrorCallback): void;

    edgeCount(): number;
    to_dot(): string;
}

export function graph(id: string): Graph;

export function digraph(id: string): Graph;

export interface ParseCallback {
    (graph: Graph): void;
}

export function parse(path: string, callback: ParseCallback, errback?: ErrorCallback): void;