# All files / src/utils dashboard.ts

82.14% Statements 92/112
86.48% Branches 32/37
83.33% Functions 5/6
82.14% Lines 92/112

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     /**
     * Dashboard data selectors — derive KPIs, attention lists, and rollups
     * from the live Grackle state (sessions, tasks, environments, workspaces).
     */

    import type { Environment, Session, TaskData, Workspace } from "../hooks/types.js";

    // ─── KPI computation ────────────────────────────────────────────────────────

    /** Summary KPIs surfaced across the top of the dashboard. */
    export interface DashboardKpis {
      activeSessions: number;
      blockedTasks: number;
      attentionTasks: number;
      unhealthyEnvironments: number;
    }

    /** Compute dashboard KPI counts from live state. */
    export function computeKpis(
      sessions: Session[],
      tasks: TaskData[],
      environments: Environment[],
    ): DashboardKpis {
      const activeSessions = sessions.filter(
        (s) => s.status === "running" || s.status === "idle" || s.status === "waiting",
      ).length;

      const taskStatusById = buildTaskStatusMap(tasks);

      const blockedTasks = tasks.filter((t) => isTaskBlocked(t, taskStatusById)).length;

      const attentionTasks = tasks.filter(
        (t) => t.status === "paused" || t.status === "failed" || isTaskBlocked(t, taskStatusById),
      ).length;

      const unhealthyEnvironments = environments.filter(
        (e) => e.status === "disconnected" || e.status === "error",
      ).length;

      return { activeSessions, blockedTasks, attentionTasks, unhealthyEnvironments };
    }

    // ─── Task helpers ───────────────────────────────────────────────────────────

    /** Build a lookup map of task-id → status. */
    function buildTaskStatusMap(tasks: TaskData[]): Map<string, string> {
      const map = new Map<string, string>();
      for (const t of tasks) {
        map.set(t.id, t.status);
      }
      return map;
    }

    /** Returns true if the task has unresolved (non-complete) dependencies. */
    function isTaskBlocked(task: TaskData, statusMap: Map<string, string>): boolean {
      return task.dependsOn.some((depId) => statusMap.get(depId) !== "complete");
    }

    /** A task that needs operator attention (blocked, paused, or failed). */
    export interface AttentionTask {
      task: TaskData;
      reason: "blocked" | "paused" | "failed";
      workspaceName: string;
    }

    /** Collect tasks requiring attention, ordered: failed → blocked → paused. */
    export function getAttentionTasks(tasks: TaskData[], workspaces: Workspace[]): AttentionTask[] {
      const wsMap = new Map<string, Workspace>();
      for (const ws of workspaces) {
        wsMap.set(ws.id, ws);
      }
      const taskStatusMap = buildTaskStatusMap(tasks);

      const result: AttentionTask[] = [];

      for (const task of tasks) {
        const workspaceName = task.workspaceId
          ? (wsMap.get(task.workspaceId)?.name ?? "Unknown")
          : "Unknown";

        if (task.status === "failed") {
          result.push({ task, reason: "failed", workspaceName });
        } else if (isTaskBlocked(task, taskStatusMap)) {
          result.push({ task, reason: "blocked", workspaceName });
        } else if (task.status === "paused") {
          result.push({ task, reason: "paused", workspaceName });
        }
      }

      // Sort: failed first, then blocked, then paused
      const ORDER: Record<string, number> = { failed: 0, blocked: 1, paused: 2 };
      result.sort((a, b) => (ORDER[a.reason] ?? 3) - (ORDER[b.reason] ?? 3));

      return result;
    }

    // ─── Active sessions with context ───────────────────────────────────────────

    /** A session enriched with display context. */
    export interface ActiveSession {
      session: Session;
      environmentName: string;
    }

    /** Get active sessions (running/idle/waiting) with resolved environment names. */
    export function getActiveSessions(
      sessions: Session[],
      environments: Environment[],
    ): ActiveSession[] {
      const envMap = new Map<string, Environment>();
      for (const e of environments) {
        envMap.set(e.id, e);
      }

      return sessions
        .filter((s) => s.status === "running" || s.status === "idle" || s.status === "waiting")
        .map((session) => ({
          session,
          environmentName: envMap.get(session.environmentId)?.displayName ?? "Unknown",
        }));
    }

    // ─── Workspace snapshots ────────────────────────────────────────────────────

    /** Progress rollup for a single workspace. */
    export interface WorkspaceSnapshot {
      workspace: Workspace;
      totalTasks: number;
      completedTasks: number;
      workingTasks: number;
      failedTasks: number;
    }

    /** Build progress snapshots for each workspace. */
    export function getWorkspaceSnapshots(
      workspaces: Workspace[],
      tasks: TaskData[],
      _environments: Environment[],
    ): WorkspaceSnapshot[] {
      const statsByWorkspace = new Map<
        string,
        {
          totalTasks: number;
          completedTasks: number;
          workingTasks: number;
          failedTasks: number;
        }
      >();

      for (const task of tasks) {
        if (!task.workspaceId) {
          continue;
        }

        let stats = statsByWorkspace.get(task.workspaceId);
        if (!stats) {
          stats = {
            totalTasks: 0,
            completedTasks: 0,
            workingTasks: 0,
            failedTasks: 0,
          };
          statsByWorkspace.set(task.workspaceId, stats);
        }

        stats.totalTasks += 1;
        if (task.status === "complete") {
          stats.completedTasks += 1;
        } else if (task.status === "working") {
          stats.workingTasks += 1;
        } else if (task.status === "failed") {
          stats.failedTasks += 1;
        }
      }

      return workspaces.map((workspace) => {
        const stats = statsByWorkspace.get(workspace.id) ?? {
          totalTasks: 0,
          completedTasks: 0,
          workingTasks: 0,
          failedTasks: 0,
        };

        return {
          workspace,
          totalTasks: stats.totalTasks,
          completedTasks: stats.completedTasks,
          workingTasks: stats.workingTasks,
          failedTasks: stats.failedTasks,
        };
      });
    }