function getTimerApi(runtime = {}) {
  const rawSetTimeout =
    typeof runtime.setTimeout === "function"
      ? runtime.setTimeout
      : globalThis.setTimeout;
  const rawClearTimeout =
    typeof runtime.clearTimeout === "function"
      ? runtime.clearTimeout
      : globalThis.clearTimeout;

  return {
    setTimeout(...args) {
      return Reflect.apply(rawSetTimeout, globalThis, args);
    },
    clearTimeout(...args) {
      return Reflect.apply(rawClearTimeout, globalThis, args);
    },
  };
}

export async function onViewGraphController(runtime) {
  const graph = runtime.getCurrentGraph();
  if (!graph) {
    runtime.toastr.warning("当前没有加载的图谱");
    return;
  }

  const stats = runtime.getGraphStats(graph);
  const statsText = [
    `节点: ${stats.activeNodes} 活跃 / ${stats.archivedNodes} 归档`,
    `边: ${stats.totalEdges}`,
    `最后处理楼层: ${stats.lastProcessedSeq}`,
    `类型分布: ${
      Object.entries(stats.typeCounts)
        .map(([k, v]) => `${k}=${v}`)
        .join(", ") || "(空)"
    }`,
  ].join("\n");

  runtime.toastr.info(statsText, "ST-BME 图谱状态", { timeOut: 10000 });
}

export async function onTestEmbeddingController(runtime) {
  const config = runtime.getEmbeddingConfig();
  const validation = runtime.validateVectorConfig(config);
  if (!validation.valid) {
    runtime.toastr.warning(validation.error);
    return;
  }

  runtime.toastr.info("正在测试 Embedding API 连通性...");
  const result = await runtime.testVectorConnection(config, runtime.getCurrentChatId());

  if (result.success) {
    runtime.toastr.success(`连接成功！向量维度: ${result.dimensions}`);
  } else {
    runtime.toastr.error(`连接失败: ${result.error}`);
  }
}

export async function onTestMemoryLLMController(runtime) {
  runtime.toastr.info("正在测试记忆 LLM 连通性...");
  const result = await runtime.testLLMConnection();

  if (result.success) {
    runtime.toastr.success(`连接成功！模式: ${result.mode}`);
  } else {
    runtime.toastr.error(`连接失败: ${result.error}`);
  }
}

export async function onFetchMemoryLLMModelsController(runtime) {
  runtime.toastr.info("正在拉取记忆 LLM 模型列表...");
  const result = await runtime.fetchMemoryLLMModels();

  if (result.success) {
    runtime.toastr.success(`已拉取 ${result.models.length} 个记忆 LLM 模型`);
  } else {
    runtime.toastr.error(`拉取失败: ${result.error}`);
  }

  return result;
}

export async function onFetchEmbeddingModelsController(runtime, mode = null) {
  const config = runtime.getEmbeddingConfig(mode);
  const targetMode = mode || config?.mode || "direct";
  const validation = runtime.validateVectorConfig(config);
  if (!validation.valid) {
    runtime.toastr.warning(validation.error);
    return { success: false, models: [], error: validation.error };
  }

  runtime.toastr.info("正在拉取 Embedding 模型列表...");
  const result = await runtime.fetchAvailableEmbeddingModels(config);

  if (result.success) {
    const modeLabel = targetMode === "backend" ? "后端" : "直连";
    runtime.toastr.success(
      `已拉取 ${result.models.length} 个${modeLabel} Embedding 模型`,
    );
  } else {
    runtime.toastr.error(`拉取失败: ${result.error}`);
  }

  return result;
}

export async function onManualCompressController(runtime) {
  const graph = runtime.getCurrentGraph();
  if (!graph) return;
  if (!runtime.ensureGraphMutationReady("手动压缩")) return;

  const beforeSnapshot = runtime.cloneGraphSnapshot(graph);
  const result = await runtime.compressAll(
    graph,
    runtime.getSchema(),
    runtime.getEmbeddingConfig(),
    false,
    undefined,
    undefined,
    runtime.getSettings(),
  );
  runtime.recordMaintenanceAction?.({
    action: "compress",
    beforeSnapshot,
    mode: "manual",
    summary: runtime.buildMaintenanceSummary?.("compress", result, "manual"),
  });
  await runtime.recordGraphMutation({
    beforeSnapshot,
    artifactTags: ["compression"],
  });

  runtime.toastr.info(`压缩完成: 新建 ${result.created}, 归档 ${result.archived}`);
}

export async function onExportGraphController(runtime) {
  const graph = runtime.getCurrentGraph();
  if (!graph) return;

  const json = runtime.exportGraph(graph);
  const blob = new Blob([json], { type: "application/json" });
  const url = URL.createObjectURL(blob);
  const a = runtime.document.createElement("a");
  a.href = url;
  a.download = `st-bme-graph-${Date.now()}.json`;
  a.click();
  URL.revokeObjectURL(url);

  runtime.toastr.success("图谱已导出");
}

export async function onViewLastInjectionController(runtime) {
  const content = runtime.getLastInjectionContent();
  if (!content) {
    runtime.toastr.info("暂无注入内容");
    return;
  }

  const popup = runtime.document.createElement("div");
  popup.style.cssText =
    "position:fixed;top:50%;left:50%;transform:translate(-50%,-50%);background:#1a1a2e;color:#eee;padding:24px;border-radius:12px;max-width:80vw;max-height:80vh;overflow:auto;z-index:99999;white-space:pre-wrap;font-size:13px;box-shadow:0 8px 32px rgba(0,0,0,0.5);";
  popup.textContent = content;

  const close = runtime.document.createElement("button");
  close.textContent = "关闭";
  close.style.cssText =
    "position:absolute;top:8px;right:12px;background:#e94560;color:white;border:none;padding:4px 12px;border-radius:4px;cursor:pointer;";
  close.onclick = () => popup.remove();
  popup.appendChild(close);

  runtime.document.body.appendChild(popup);
}

export async function onRebuildController(runtime) {
  if (!runtime.confirm("确定要从当前聊天重建图谱？这将清除现有图谱数据。")) {
    return;
  }
  if (!runtime.ensureGraphMutationReady("重建图谱")) return;

  const context = runtime.getContext();
  const chat = context?.chat;
  if (!Array.isArray(chat)) {
    runtime.toastr.warning("当前聊天上下文不可用，无法重建");
    return;
  }

  const previousGraphSnapshot = runtime.getCurrentGraph()
    ? runtime.cloneGraphSnapshot(runtime.getCurrentGraph())
    : runtime.cloneGraphSnapshot(
        runtime.normalizeGraphRuntimeState(
          runtime.createEmptyGraph(),
          runtime.getCurrentChatId(),
        ),
      );
  const previousUiState = runtime.snapshotRuntimeUiState();
  const settings = runtime.getSettings();
  runtime.setRuntimeStatus(
    "图谱重建中",
    `当前聊天 ${Array.isArray(chat) ? chat.length : 0} 条消息`,
    "running",
  );

  const nextGraph = runtime.normalizeGraphRuntimeState(
    runtime.createEmptyGraph(),
    runtime.getCurrentChatId(),
  );
  nextGraph.batchJournal = [];
  runtime.setCurrentGraph(nextGraph);
  runtime.clearInjectionState();

  try {
    await runtime.prepareVectorStateForReplay(true);
    const replayedBatches = await runtime.replayExtractionFromHistory(chat, settings);
    runtime.clearHistoryDirty(
      runtime.getCurrentGraph(),
      runtime.buildRecoveryResult("full-rebuild", {
        fromFloor: 0,
        batches: replayedBatches,
        path: "full-rebuild",
        detectionSource: "manual-rebuild",
        affectedBatchCount: runtime.getCurrentGraph().batchJournal?.length || 0,
        replayedBatchCount: replayedBatches,
        reason: "用户手动触发全量重建",
      }),
    );
    runtime.saveGraphToChat({ reason: "manual-rebuild-complete" });
    runtime.setLastExtractionStatus(
      "图谱重建完成",
      `已回放 ${replayedBatches} 批提取`,
      "success",
      {
        syncRuntime: false,
      },
    );

    if (runtime.getCurrentGraph().vectorIndexState?.lastWarning) {
      runtime.setRuntimeStatus(
        "图谱重建完成",
        `已回放 ${replayedBatches} 批，但向量仍待修复`,
        "warning",
      );
      runtime.toastr.warning(
        `图谱已重建，但向量索引仍待修复: ${runtime.getCurrentGraph().vectorIndexState.lastWarning}`,
      );
    } else {
      runtime.setRuntimeStatus(
        "图谱重建完成",
        `已回放 ${replayedBatches} 批，图谱与向量索引已刷新`,
        "success",
      );
      runtime.toastr.success("图谱与向量索引已按当前聊天全量重建");
    }
  } catch (error) {
    runtime.setCurrentGraph(
      runtime.normalizeGraphRuntimeState(
        previousGraphSnapshot,
        runtime.getCurrentChatId(),
      ),
    );
    runtime.restoreRuntimeUiState(previousUiState);
    runtime.saveGraphToChat({ reason: "manual-rebuild-restore-previous" });
    runtime.setLastExtractionStatus("图谱重建失败", error?.message || String(error), "error", {
      syncRuntime: true,
    });
    throw new Error(
      `图谱重建失败，已恢复到重建前状态: ${error?.message || error}`,
    );
  } finally {
    runtime.refreshPanelLiveState();
  }
}

export async function onImportGraphController(runtime) {
  if (!runtime.ensureGraphMutationReady("导入图谱")) {
    return { cancelled: true };
  }

  const input = runtime.document.createElement("input");
  input.type = "file";
  input.accept = ".json";

  return await new Promise((resolve, reject) => {
    const timers = getTimerApi(runtime);
    let settled = false;
    let focusTimer = null;

    const cleanup = () => {
      if (focusTimer) {
        timers.clearTimeout(focusTimer);
        focusTimer = null;
      }
      input.onchange = null;
      runtime.window.removeEventListener("focus", onWindowFocus, true);
    };

    const finish = (value, isError = false) => {
      if (settled) return;
      settled = true;
      cleanup();
      if (isError) {
        reject(value);
      } else {
        resolve(value);
      }
    };

    const onWindowFocus = () => {
      focusTimer = timers.setTimeout(() => {
        if (!settled) {
          finish({ cancelled: true });
        }
      }, 180);
    };

    runtime.window.addEventListener("focus", onWindowFocus, true);
    input.addEventListener(
      "cancel",
      () => {
        finish({ cancelled: true });
      },
      { once: true },
    );

    input.onchange = async (event) => {
      const file = event.target.files?.[0];
      if (!file) {
        finish({ cancelled: true });
        return;
      }

      try {
        const text = await file.text();
        const importedGraph = runtime.normalizeGraphRuntimeState(
          runtime.importGraph(text),
          runtime.getCurrentChatId(),
        );
        runtime.setCurrentGraph(importedGraph);
        runtime.markVectorStateDirty("导入图谱后需要重建向量索引");
        runtime.setExtractionCount(0);
        runtime.setLastExtractedItems([]);
        runtime.updateLastRecalledItems(importedGraph.lastRecallResult || []);
        runtime.clearInjectionState();
        runtime.saveGraphToChat({ reason: "graph-import-complete" });
        runtime.toastr.success("图谱已导入");
        finish({ imported: true, handledToast: true });
      } catch (err) {
        const error =
          err instanceof Error ? err : new Error(String(err || "导入失败"));
        runtime.toastr.error(`导入失败: ${error.message}`);
        error._stBmeToastHandled = true;
        finish(error, true);
      }
    };

    input.click();
  });
}

export async function onRebuildVectorIndexController(runtime, range = null) {
  if (!runtime.ensureGraphMutationReady(range ? "范围重建向量" : "重建向量")) return;
  runtime.ensureCurrentGraphRuntimeState();

  const config = runtime.getEmbeddingConfig();
  const validation = runtime.validateVectorConfig(config);
  if (!validation.valid) {
    runtime.toastr.warning(validation.error);
    return;
  }

  const vectorController = runtime.beginStageAbortController("vector");
  try {
    const result = await runtime.syncVectorState({
      force: true,
      purge: runtime.isBackendVectorConfig(config) && !range,
      range,
      signal: vectorController.signal,
    });

    runtime.saveGraphToChat({ reason: "vector-rebuild-complete" });
    if (result?.aborted) {
      return;
    }
    if (result?.error) {
      throw new Error(result.error);
    }
    runtime.toastr.success(
      range
        ? `范围向量重建完成：indexed=${result.stats.indexed}, pending=${result.stats.pending}`
        : `当前聊天向量重建完成：indexed=${result.stats.indexed}, pending=${result.stats.pending}`,
    );
  } finally {
    runtime.finishStageAbortController("vector", vectorController);
    runtime.refreshPanelLiveState();
  }
}

export async function onReembedDirectController(runtime) {
  const config = runtime.getEmbeddingConfig();
  if (!runtime.isDirectVectorConfig(config)) {
    runtime.toastr.info("当前不是直连模式，无需执行重嵌");
    return;
  }

  await runtime.onRebuildVectorIndex();
}

export async function onManualSleepController(runtime) {
  const graph = runtime.getCurrentGraph();
  if (!graph) return;
  if (!runtime.ensureGraphMutationReady("执行遗忘")) return;

  const beforeSnapshot = runtime.cloneGraphSnapshot(graph);
  const result = runtime.sleepCycle(graph, runtime.getSettings());
  runtime.recordMaintenanceAction?.({
    action: "sleep",
    beforeSnapshot,
    mode: "manual",
    summary: runtime.buildMaintenanceSummary?.("sleep", result, "manual"),
  });
  await runtime.recordGraphMutation({
    beforeSnapshot,
    artifactTags: ["sleep"],
  });
  runtime.toastr.info(`执行完成：归档 ${result.forgotten} 个节点`);
}

export async function onManualSynopsisController(runtime) {
  const graph = runtime.getCurrentGraph();
  if (!graph) return;
  if (!runtime.ensureGraphMutationReady("更新概要")) return;

  const beforeSnapshot = runtime.cloneGraphSnapshot(graph);
  await runtime.generateSynopsis({
    graph,
    schema: runtime.getSchema(),
    currentSeq: runtime.getCurrentChatSeq(),
    customPrompt: undefined,
    settings: runtime.getSettings(),
  });
  await runtime.recordGraphMutation({
    beforeSnapshot,
    artifactTags: ["synopsis"],
  });
  runtime.toastr.success("概要生成完成");
}

export async function onManualEvolveController(runtime) {
  const graph = runtime.getCurrentGraph();
  if (!graph) return;
  if (!runtime.ensureGraphMutationReady("强制进化")) return;

  const candidateIds = runtime.getLastExtractedItems()
    .map((item) => item.id)
    .filter(Boolean);
  if (candidateIds.length === 0) {
    runtime.toastr.info("暂无最近提取节点可用于进化");
    return;
  }

  const beforeSnapshot = runtime.cloneGraphSnapshot(graph);
  const settings = runtime.getSettings();
  const result = await runtime.consolidateMemories({
    graph,
    newNodeIds: candidateIds,
    embeddingConfig: runtime.getEmbeddingConfig(),
    customPrompt: undefined,
    settings,
    options: {
      neighborCount: settings.consolidationNeighborCount,
      conflictThreshold: settings.consolidationThreshold,
    },
  });
  runtime.recordMaintenanceAction?.({
    action: "consolidate",
    beforeSnapshot,
    mode: "manual",
    summary: runtime.buildMaintenanceSummary?.("consolidate", result, "manual"),
  });
  await runtime.recordGraphMutation({
    beforeSnapshot,
    artifactTags: ["consolidation"],
  });
  runtime.toastr.success(
    `整合完成：合并 ${result.merged}，跳过 ${result.skipped}，保留 ${result.kept}，进化 ${result.evolved}，新链接 ${result.connections}，回溯更新 ${result.updates}`,
  );
}

export async function onUndoLastMaintenanceController(runtime) {
  const graph = runtime.getCurrentGraph();
  if (!graph) return;
  if (!runtime.ensureGraphMutationReady("撤销最近维护")) return;

  const result = runtime.undoLastMaintenance?.();
  if (!result?.ok) {
    runtime.toastr.warning(result?.reason || "撤销最近维护失败");
    return { handledToast: true };
  }

  runtime.markVectorStateDirty?.("撤销维护后需要重建向量索引");
  runtime.saveGraphToChat?.({ reason: "maintenance-undo-complete" });
  runtime.refreshPanelLiveState?.();
  runtime.toastr.success(
    `已撤销最近维护：${result.entry?.summary || result.entry?.action || "未知操作"}`,
  );
  return {
    handledToast: true,
    result,
  };
}