bpmn-optimizer/src/index.ts

import SiguiyamaAlgorithm from "./optimizer/siguiyama/SiguiyamaAlgorithm.js";
import Graph from "./graph/Graph.js";
import Node from "./graph/node/Node.js";
import Edge from "./graph/edge/Edge.js";
import BPMNError from "./errors/BPMNError.js";
import {SiguiyamaContext} from "./optimizer/siguiyama/SiguiyamaContext.js";
import DzwfJsonDeserializer from "./io/deserialize/json/DzwfJsonDeserializer.js";
import {readFileSync, writeFileSync} from "node:fs";
import CycleRemoveStep from "./optimizer/steps/CycleRemoveStep.js";
import LayerAssignmentStep from "./optimizer/steps/LayerAssignmentStep.js";
import NodeOrderingStep from "./optimizer/steps/NodeOrderingStep.js";
import CoordinateAssignmentStep from "./optimizer/steps/CoordinateAssignmentStep.js";
import EdgeRoutingStep from "./optimizer/steps/EdgeRoutingStep.js";
import CleanupStep from "./optimizer/steps/CleanupStep.js";
import DzwfJsonSerializer from "./io/serialize/json/DzwfJsonSerializer.js";

export class BPMNOptimizer {
	private _optimizationAlgorithm?: SiguiyamaAlgorithm;

	public setOptimizationAlgorithm(algorithm: SiguiyamaAlgorithm) : this {
		this._optimizationAlgorithm = algorithm;
		return this;
	}

	public run(graph: Graph<Node, Edge<Node>>) : SiguiyamaContext {
		if(!this._optimizationAlgorithm)
			throw new BPMNError("Optimization algorithm not found, call \"setOptimizationAlgorithm\" method first!");
		return this._optimizationAlgorithm.run(graph);
	}
}

const deserializer = new DzwfJsonDeserializer();
const data = deserializer.deserialize(readFileSync("./data/bpmn-graph.json", "utf8"));

const algorithm = new SiguiyamaAlgorithm().addStep(new CycleRemoveStep()).addStep(new LayerAssignmentStep()).addStep(new NodeOrderingStep()).addStep(new CoordinateAssignmentStep()).addStep(new EdgeRoutingStep()).addStep(new CleanupStep());

const optimizer = new BPMNOptimizer().setOptimizationAlgorithm(algorithm);

optimizer.run(data.graph);

const serializer = new DzwfJsonSerializer();
writeFileSync("./data/document.dzwf", serializer.serialize(data));