import type { CallToolResult } from "@modelcontextprotocol/client";
import { queryMcpToolId } from "../runtime/product-mcp-tools.js";

// The local server exposes tools only. Retain the saved Server evidence, but
// replace its upstream-only resource link with this server's paging tool.
export function localEvidenceResult(result: CallToolResult): CallToolResult {
  if (result.isError || !result.content.some((item) => item.type === "resource_link" && item.uri.startsWith("tjwater://"))) return result;
  const raw = result.structuredContent;
  const output = raw && typeof raw === "object" && !Array.isArray(raw) ? raw as Record<string, unknown> : undefined;
  const evidenceId = output?.evidence_id;
  if (!output || typeof evidenceId !== "string" || !evidenceId || evidenceId.length > 160) throw new Error("Saved evidence response has no identifier");
  const originalData = output.data && typeof output.data === "object" && !Array.isArray(output.data) ? output.data as Record<string, unknown> : {};
  const { resource_uri: _uri, ...data } = originalData;
  const next = { ...output,
    data: { ...data, evidence_read: { tool: queryMcpToolId("get_task_evidence"), arguments: { evidence_id: evidenceId, limit: 20, offset: 0 } } },
    data_gaps: [...(Array.isArray(output.data_gaps) ? output.data_gaps.filter((gap) => gap !== "Inline result abbreviated; read the saved evidence resource") : []),
      "Inline result abbreviated; use evidence_read with a small page and select deeper data_path values when needed"],
  };
  return { ...result, structuredContent: next,
    content: [{ type: "text", text: JSON.stringify(next) }, ...result.content.filter((item) => item.type !== "text" && item.type !== "resource_link")],
  };
}