# All files / src/components/tools GenericToolCard.tsx

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     import { useState, type JSX } from "react";
    import { ChevronRight, Cog } from "lucide-react";
    import type { ToolCardProps } from "./ToolCardProps.js";
    import { ICON_SM, ICON_MD } from "../../utils/iconSize.js";
    import styles from "./toolCards.module.scss";

    /** Formats an MCP tool name for display: `mcp__server__tool` → `server / tool`. */
    export function formatToolName(tool: string): { display: string; isMcp: boolean } {
      const mcpMatch = /^mcp__([^_]+(?:_[^_]+)*)__(.+)$/.exec(tool);
      if (mcpMatch) {
        return { display: `${mcpMatch[1]} / ${mcpMatch[2]}`, isMcp: true };
      }
      return { display: tool, isMcp: false };
    }

    /** Extracts a one-line human-readable summary of tool arguments. */
    function argsPreview(args: unknown): string {
      if (args === null || args === undefined) {
        return "";
      }
      if (typeof args !== "object") {
        return String(args);
      }
      const a = args as Record<string, unknown>;
      // Common patterns
      if (typeof a.command === "string") {
        return a.command;
      }
      if (typeof a.file_path === "string") {
        return a.file_path;
      }
      if (typeof a.path === "string") {
        return a.path;
      }
      if (typeof a.query === "string") {
        return a.query;
      }
      if (typeof a.url === "string") {
        return a.url;
      }
      // Fallback
      try {
        const json = JSON.stringify(args);
        return json.length > 120 ? `${json.slice(0, 120)}\u2026` : json;
      } catch {
        return "";
      }
    }

    /** Number of result lines shown when collapsed. */
    const PREVIEW_LINES: number = 5;

    /** Renders a generic/unknown tool call with formatted args and result. */
    export function GenericToolCard({ tool, args, result, isError }: ToolCardProps): JSX.Element {
      const [expanded, setExpanded] = useState(false);
      const { display } = formatToolName(tool);
      const preview = argsPreview(args);
      const inProgress = result === undefined;

      const resultLines = result?.split("\n") ?? [];
      const hasMore = resultLines.length > PREVIEW_LINES;
      const displayResult = expanded ? result : resultLines.slice(0, PREVIEW_LINES).join("\n");

      // Format args as pretty JSON for expanded view
      let argsFormatted = "";
      if (args !== null && args !== undefined) {
        try {
          argsFormatted = JSON.stringify(args, null, 2);
        } catch {
          argsFormatted = String(args);
        }
      }

      return (
        <div
          className={`${styles.card} ${isError ? styles.cardRed : styles.cardBlue} ${inProgress ? styles.inProgress : ""}`}
          data-testid="tool-card-generic"
        >
          <div className={styles.header}>
            <span className={styles.icon}>
              <Cog size={ICON_MD} aria-hidden="true" />
            </span>
            <span className={styles.toolName} style={{ color: "var(--accent-blue)" }}>
              {display}
            </span>
            {preview && <span className={styles.fileName}>{preview}</span>}
          </div>

          {/* Show formatted args when no result yet */}
          {inProgress && argsFormatted && (
            <pre className={styles.pre} data-testid="tool-card-args">
              {argsFormatted}
            </pre>
          )}

          {isError && result && (
            <pre className={styles.pre} data-testid="tool-card-error">
              {result}
            </pre>
          )}

          {!isError && !inProgress && result && (
            <>
              <pre className={styles.pre} data-testid="tool-card-result">
                {displayResult}
              </pre>
              {hasMore && (
                <button
                  type="button"
                  className={styles.bodyToggle}
                  onClick={() => {
                    setExpanded((v) => !v);
                  }}
                  aria-expanded={expanded}
                  data-testid="tool-card-toggle"
                >
                  <span
                    className={`${styles.chevron} ${expanded ? styles.chevronExpanded : ""}`}
                    aria-hidden="true"
                  >
                    <ChevronRight size={ICON_SM} />
                  </span>
                  {expanded ? "collapse" : `${resultLines.length - PREVIEW_LINES} more lines`}
                </button>
              )}
            </>
          )}
        </div>
      );
    }