Add exporter modules

src/exporters/dotExporter.ts

@@ -0,0 +1,160 @@
+import * as fs from 'fs';
+import { DependencyGraph, GraphNode, GraphEdge, GraphCluster, ExportOptions } from '../types';
+
+export class DOTExporter {
+  private graph: DependencyGraph;
+  private options: Required<ExportOptions>;
+
+  constructor(graph: DependencyGraph, options: ExportOptions) {
+    this.graph = graph;
+    this.options = {
+      format: options.format,
+      outputPath: options.outputPath,
+      includeMetadata: options.includeMetadata ?? false,
+      layout: options.layout ?? 'dot',
+      rankDir: options.rankDir ?? 'TB'
+    };
+  }
+
+  export(): string {
+    const lines: string[] = [];
+
+    lines.push('digraph typeflow {');
+    lines.push('  graph [');
+    lines.push(`    rankdir=${this.options.rankDir}`);
+    lines.push('    splines=true');
+    lines.push('    overlap=false');
+    lines.push('    nodesep=0.5');
+    lines.push('    ranksep=0.5');
+    lines.push('  ]');
+    lines.push('');
+    lines.push('  node [');
+    lines.push('    shape=box');
+    lines.push('    style=filled');
+    lines.push('    fontname="Helvetica"');
+    lines.push('    fontsize=10');
+    lines.push('  ]');
+    lines.push('');
+    lines.push('  edge [');
+    lines.push('    fontname="Helvetica"');
+    lines.push('    fontsize=8');
+    lines.push('  ]');
+    lines.push('');
+
+    if (this.graph.clusters.length > 0) {
+      for (const cluster of this.graph.clusters) {
+        this.writeCluster(lines, cluster);
+      }
+      lines.push('');
+    }
+
+    for (const edge of this.graph.edges) {
+      this.writeEdge(lines, edge);
+    }
+    lines.push('');
+
+    for (const node of this.graph.nodes.values()) {
+      this.writeNode(lines, node);
+    }
+
+    if (this.options.includeMetadata) {
+      lines.push('');
+      lines.push('  subgraph cluster_metadata {');
+      lines.push('    label="Metadata"');
+      lines.push('    style=dashed');
+      lines.push(`    nodeCount [label="Nodes: ${this.graph.metadata.nodeCount}"]`);
+      lines.push(`    edgeCount [label="Edges: ${this.graph.metadata.edgeCount}"]`);
+      lines.push(`    createdAt [label="Created: ${this.graph.metadata.createdAt}"]`);
+      lines.push('  }');
+    }
+
+    lines.push('}');
+
+    return lines.join('\n');
+  }
+
+  private writeCluster(lines: string[], cluster: GraphCluster): void {
+    lines.push(`  subgraph ${cluster.id} {`);
+    lines.push(`    label="${cluster.label}"`);
+    if (cluster.style) {
+      lines.push(`    style="${cluster.style}"`);
+    }
+    lines.push('    color=lightgray');
+
+    for (const nodeId of cluster.nodeIds) {
+      lines.push(`    ${this.escapeId(nodeId)}`);
+    }
+
+    lines.push('  }');
+  }
+
+  private writeNode(lines: string[], node: GraphNode): void {
+    const nodeId = this.escapeId(node.id);
+    const label = this.getNodeLabel(node);
+    const fillcolor = this.getNodeColor(node.kind);
+
+    lines.push(`  ${nodeId} [`);
+    lines.push(`    label="${label}"`);
+    lines.push(`    fillcolor="${fillcolor}"`);
+    lines.push('  ]');
+  }
+
+  private writeEdge(lines: string[], edge: GraphEdge): void {
+    const sourceId = this.escapeId(edge.source);
+    const targetId = this.escapeId(edge.target);
+
+    const props: string[] = [];
+
+    if (edge.style) {
+      props.push(`style="${edge.style}"`);
+    }
+
+    if (edge.label) {
+      props.push(`label="${edge.label}"`);
+    }
+
+    if (edge.weight !== undefined) {
+      props.push(`weight=${edge.weight}`);
+    }
+
+    const propsStr = props.length > 0 ? ` [${props.join(', ')}]` : '';
+
+    lines.push(`  ${sourceId} -> ${targetId}${propsStr}`);
+  }
+
+  private getNodeLabel(node: GraphNode): string {
+    const name = node.label;
+    const fileName = node.filePath.split('/').pop() || node.filePath;
+    const line = node.lineNumber;
+
+    return `${name}\\n(${fileName}:${line})`;
+  }
+
+  private getNodeColor(kind: string): string {
+    const colors: Record<string, string> = {
+      interface: '#e1f5fe',
+      type_alias: '#f3e5f5',
+      class: '#e8f5e9',
+      enum: '#fff3e0',
+      function: '#fce4ec',
+      import: '#ffebee',
+      external: '#fafafa'
+    };
+
+    return colors[kind] || '#ffffff';
+  }
+
+  private escapeId(id: string): string {
+    return id.replace(/[^a-zA-Z0-9_]/g, '_').replace(/^(\d)/, '_$1');
+  }
+
+  toFile(): void {
+    const content = this.export();
+    fs.writeFileSync(this.options.outputPath, content, 'utf-8');
+  }
+}
+
+export function exportToDOT(graph: DependencyGraph, options: ExportOptions): string {
+  const exporter = new DOTExporter(graph, options);
+  return exporter.export();
+}