import test from "node:test";
import assert from "node:assert/strict";
import {
  createRefreshThrottleState,
  markScheduledRefreshExecuted,
  planThrottledRefresh,
  shouldRefreshRealtimeEvent,
} from "../src/lib/realtime-refresh";

test("shouldRefreshRealtimeEvent filters scoped conversation updates by project and note", () => {
  assert.equal(
    shouldRefreshRealtimeEvent({
      eventType: "conversation.updated",
      eventData: JSON.stringify({ projectId: "project-a", note: "project_goals.updated" }),
      projectIds: ["project-a", "project-b"],
      conversationUpdatedNotes: ["project_goals.updated"],
    }),
    true,
  );

  assert.equal(
    shouldRefreshRealtimeEvent({
      eventType: "conversation.updated",
      eventData: JSON.stringify({ projectId: "project-z", note: "project_goals.updated" }),
      projectIds: ["project-a", "project-b"],
      conversationUpdatedNotes: ["project_goals.updated"],
    }),
    false,
  );

  assert.equal(
    shouldRefreshRealtimeEvent({
      eventType: "conversation.updated",
      eventData: JSON.stringify({ projectId: "project-a", note: "other.note" }),
      projectIds: ["project-a", "project-b"],
      conversationUpdatedNotes: ["project_goals.updated"],
    }),
    false,
  );
});

test("planThrottledRefresh coalesces bursts into one delayed refresh", () => {
  const state = createRefreshThrottleState();

  assert.deepEqual(planThrottledRefresh(state, 1_000, 400), {
    type: "refresh_now",
  });
  assert.equal(state.lastRefreshAt, 1_000);
  assert.equal(state.pending, false);

  assert.deepEqual(planThrottledRefresh(state, 1_180, 400), {
    type: "schedule_refresh",
    delayMs: 220,
  });
  assert.equal(state.pending, true);

  assert.deepEqual(planThrottledRefresh(state, 1_220, 400), {
    type: "skip",
  });

  markScheduledRefreshExecuted(state, 1_400);
  assert.equal(state.pending, false);
  assert.equal(state.lastRefreshAt, 1_400);

  assert.deepEqual(planThrottledRefresh(state, 1_900, 400), {
    type: "refresh_now",
  });
});