# All files / src/components/layout BottomStatusBar.tsx

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     import type { JSX } from "react";
    import { useLocation, useMatch } from "react-router";
    import type { Session, TaskData, Environment } from "../../hooks/types.js";
    import { newTaskUrl, newChatUrl, useAppNavigate } from "../../utils/navigation.js";
    import styles from "./BottomStatusBar.module.scss";

    /**
     * Thin, read-only status bar that shows contextual hints based on the current
     * route and application state. Does NOT contain any form inputs or send/spawn
     * actions — those live in {@link ChatInput} on each page.
     *
     * Returns an empty fragment when the current page is showing a ChatInput or
     * when the route has no meaningful hint to display.
     */
    /** Props for the BottomStatusBar component. */
    interface BottomStatusBarProps {
      /** All sessions. */
      sessions: Session[];
      /** All tasks. */
      tasks: TaskData[];
      /** All environments. */
      environments: Environment[];
    }

    export function BottomStatusBar({
      sessions,
      tasks,
      environments,
    }: BottomStatusBarProps): JSX.Element {
      const navigate = useAppNavigate();
      const location = useLocation();

      // Match current route (both global and workspace-scoped task URLs)
      const sessionMatch = useMatch("/sessions/:sessionId");
      const taskMatch = useMatch("/tasks/:taskId");
      const taskStreamMatch = useMatch("/tasks/:taskId/stream");
      const taskEditMatch = useMatch("/tasks/:taskId/edit");
      const wsTaskMatch = useMatch(
        "/environments/:environmentId/workspaces/:workspaceId/tasks/:taskId",
      );
      const wsTaskStreamMatch = useMatch(
        "/environments/:environmentId/workspaces/:workspaceId/tasks/:taskId/stream",
      );
      const wsTaskEditMatch = useMatch(
        "/environments/:environmentId/workspaces/:workspaceId/tasks/:taskId/edit",
      );
      const newChatMatch = useMatch("/sessions/new");
      const workspaceMatch = useMatch("/environments/:environmentId/workspaces/:workspaceId");
      const newTaskMatch = useMatch("/tasks/new");
      const chatMatch = useMatch("/chat");
      const emptyMatch = useMatch("/");
      const settingsMatch = useMatch("/settings/*");

      // Derive current page context
      const sessionId = sessionMatch?.params.sessionId;
      const taskId =
        taskMatch?.params.taskId ??
        taskStreamMatch?.params.taskId ??
        wsTaskMatch?.params.taskId ??
        wsTaskStreamMatch?.params.taskId ??
        wsTaskEditMatch?.params.taskId;
      const wsMatch = wsTaskMatch ?? wsTaskStreamMatch ?? wsTaskEditMatch;
      const routeEnvironmentId = wsMatch?.params.environmentId ?? workspaceMatch?.params.environmentId;
      const isEnvironments =
        location.pathname.startsWith("/environments") && !workspaceMatch && !wsMatch;
      const isChat = !!chatMatch;
      const isNewChat = !!newChatMatch;
      const isWorkspace = !!workspaceMatch && !wsTaskMatch && !wsTaskStreamMatch && !wsTaskEditMatch;
      const isNewTask = !!newTaskMatch;
      const isTaskEdit = !!taskEditMatch || !!wsTaskEditMatch;
      const isEmpty = !!emptyMatch && !isNewChat && !isWorkspace && !isNewTask;
      const isSettings = !!settingsMatch;

      // --- dashboard / settings / edit / new / environments / new_chat — empty ---
      if (isEmpty || isSettings || isTaskEdit || isNewTask || isEnvironments || isNewChat) {
        return <></>;
      }

      // --- /chat route — ChatInput handles input on the page; only show hint if no local env ---
      if (isChat) {
        const localEnv = environments.find(
          (e) => e.adapterType === "local" && e.status === "connected",
        );
        if (!localEnv) {
          return (
            <div className={styles.bar}>
              <span className={styles.hintText}>Add a local environment to start chatting</span>
            </div>
          );
        }
        return <></>;
      }

      // --- workspace mode (no specific task) ---
      if (isWorkspace) {
        return (
          <div className={styles.bar}>
            <span className={styles.hintText}>Select a task or click + to create one</span>
          </div>
        );
      }

      // --- task modes ---
      if (taskId) {
        const task = tasks.find((t) => t.id === taskId);
        if (!task) {
          return (
            <div className={styles.bar}>
              <span className={styles.hintText}>Loading...</span>
            </div>
          );
        }

        const tasksById = new Map(tasks.map((t) => [t.id, t]));
        const isTaskBlocked = task.dependsOn.some((depId) => {
          const dep = tasksById.get(depId);
          return dep !== undefined && dep.status !== "complete";
        });

        // Not started (blocked or unblocked)
        if (task.status === "not_started") {
          const blockerNames = isTaskBlocked
            ? task.dependsOn
                .map((depId) => tasksById.get(depId))
                .filter((t) => t && t.status !== "complete")
                .map((t) => t!.title)
            : [];
          return (
            <div className={styles.bar}>
              {isTaskBlocked ? (
                <span className={styles.statusBlocked}>Blocked by: {blockerNames.join(", ")}</span>
              ) : (
                <span className={styles.hintText}>
                  Use the buttons above to start or manage this task
                </span>
              )}
            </div>
          );
        }

        // Working / paused — check if session is active
        if (task.status === "working" || task.status === "paused") {
          const taskSessionId = task.latestSessionId || undefined;
          const taskSession = taskSessionId ? sessions.find((s) => s.id === taskSessionId) : undefined;
          const isActive = taskSession && taskSession.status !== "stopped";

          // Active session — ChatInput on the page handles this; return empty
          if (isActive) {
            return <></>;
          }

          return (
            <div className={styles.bar}>
              <span className={styles.hintText}>Waiting for agent...</span>
            </div>
          );
        }

        // Complete
        if (task.status === "complete") {
          return (
            <div className={styles.bar}>
              <span className={`${styles.statusText} ${styles.statusCompleted}`}>Task completed</span>
              <button
                onClick={() => navigate(newTaskUrl(task.workspaceId, undefined, routeEnvironmentId))}
                className={styles.btnPrimary}
              >
                + New Task
              </button>
            </div>
          );
        }

        // Failed
        if (task.status === "failed") {
          return (
            <div className={styles.bar}>
              <span className={`${styles.statusText} ${styles.statusFailed}`}>Task failed</span>
            </div>
          );
        }
      }

      // --- session mode ---
      if (sessionId) {
        const session = sessions.find((s) => s.id === sessionId);
        const isEnded = session?.status === "stopped";
        const isActive = session !== undefined && !isEnded;

        // Active session — ChatInput on the page handles this; return empty
        if (isActive) {
          return <></>;
        }

        if (isEnded) {
          return (
            <div className={styles.bar}>
              <span className={`${styles.statusText} ${styles.hintText}`}>
                Session {session.endReason || session.status}
              </span>
              <button
                onClick={() => navigate(newChatUrl(session.environmentId))}
                className={styles.btnPrimary}
              >
                + New Chat
              </button>
            </div>
          );
        }
      }

      // fallback
      return (
        <div className={styles.bar}>
          <span className={styles.hintText}>Loading...</span>
        </div>
      );
    }