// graphify OpenCode plugin
// Injects a knowledge graph reminder before bash tool calls when the graph exists.
import { existsSync } from "fs";
import { join, relative } from "path";

/** graph.json 可能出现的目录（相对仓库根）；CRM 主前端图谱通常在 crm/web/graphify-out */
function findGraphifyOutRoot(workspaceRoot) {
  const roots = [
    join(workspaceRoot, "graphify-out"),
    join(workspaceRoot, "crm", "web", "graphify-out"),
    join(workspaceRoot, "crm", "graphify-out"),
    join(workspaceRoot, "crm", "backend", "graphify-out"),
  ];
  for (const root of roots) {
    if (existsSync(join(root, "graph.json"))) return root;
  }
  return null;
}

export const GraphifyPlugin = async ({ directory }) => {
  let reminded = false;

  return {
    "tool.execute.before": async (input, output) => {
      if (reminded) return;

      const graphifyRoot = findGraphifyOutRoot(directory);
      if (!graphifyRoot) return;

      if (input.tool === "bash") {
        const rel =
          relative(directory, graphifyRoot) || "graphify-out";
        output.args.command =
          `echo "[graphify] Knowledge graph found at ${rel}/. Read ${rel}/GRAPH_REPORT.md for context before wide file search." && ` +
          output.args.command;
        reminded = true;
      }
    },
  };
};