"""Graphviz export functionality."""

from typing import List, Optional


class GraphvizExporter:
    """Exports diagrams to Graphviz format."""

    def generate_dot(
        self,
        commands: List[str],
        title: str = "Command Flow",
    ) -> str:
        """Generate DOT graph."""
        lines = ["digraph {\n", f'    label="{title}"\n', '    node [shape=box]\n\n']

        for i, cmd in enumerate(commands):
            safe_cmd = cmd.replace('"', '\\"')
            lines.append(f'    n{i} [label="{safe_cmd}"]\n')

            if i > 0:
                lines.append(f'    n{{i-1}} -> n{{i}}\n')

        lines.append("}\n")

        return "".join(lines)