import {
  takeEvery,
  put,
  select,
  call,
  takeLatest,
  all,
  delay,
} from "redux-saga/effects";

import * as Sentry from "@sentry/react";
import log from "loglevel";

import {
  getIsPropertyPaneVisible,
  getCurrentWidgetId,
} from "selectors/propertyPaneSelectors";
import { closePropertyPane } from "actions/widgetActions";
import {
  selectMultipleWidgetsInitAction,
  selectWidgetAction,
} from "actions/widgetSelectionActions";
import {
  ReduxAction,
  ReduxActionTypes,
  ReplayReduxActionTypes,
} from "@appsmith/constants/ReduxActionConstants";
import { flashElementsById } from "utils/helpers";
import {
  scrollWidgetIntoView,
  processUndoRedoToasts,
  highlightReplayElement,
  switchTab,
  expandAccordion,
} from "utils/replayHelpers";
import { updateAndSaveLayout } from "actions/pageActions";
import AnalyticsUtil from "utils/AnalyticsUtil";
import {
  getCurrentApplicationId,
  snipingModeSelector,
} from "selectors/editorSelectors";
import { findFieldInfo, REPLAY_FOCUS_DELAY } from "entities/Replay/replayUtils";
import { setActionProperty, updateAction } from "actions/pluginActionActions";
import { getEntityInCurrentPath } from "./RecentEntitiesSagas";
import { updateJSCollectionBody } from "actions/jsPaneActions";
import {
  updateReplayEntitySaga,
  workerComputeUndoRedo,
} from "./EvaluationsSaga";
import { createBrowserHistory } from "history";
import {
  getEditorConfig,
  getPluginForm,
  getSettingConfig,
} from "selectors/entitiesSelector";
import {
  Action,
  isAPIAction,
  isQueryAction,
  isSaaSAction,
} from "entities/Action";
import { API_EDITOR_TABS } from "constants/ApiEditorConstants/CommonApiConstants";
import { EDITOR_TABS } from "constants/QueryEditorConstants";
import _, { isEmpty } from "lodash";
import { ReplayEditorUpdate } from "entities/Replay/ReplayEntity/ReplayEditor";
import { ENTITY_TYPE } from "entities/AppsmithConsole";
import { Datasource } from "entities/Datasource";
import { initialize } from "redux-form";
import {
  API_EDITOR_FORM_NAME,
  DATASOURCE_DB_FORM,
  DATASOURCE_REST_API_FORM,
  QUERY_EDITOR_FORM_NAME,
} from "@appsmith/constants/forms";
import { Canvas } from "entities/Replay/ReplayEntity/ReplayCanvas";
import {
  setAppThemingModeStackAction,
  updateSelectedAppThemeAction,
} from "actions/appThemingActions";
import { AppThemingMode } from "selectors/appThemingSelectors";
import { generateAutoHeightLayoutTreeAction } from "actions/autoHeightActions";

export type UndoRedoPayload = {
  operation: ReplayReduxActionTypes;
};

export default function* undoRedoListenerSaga() {
  yield all([
    takeEvery(ReduxActionTypes.UNDO_REDO_OPERATION, undoRedoSaga),
    takeLatest(ReduxActionTypes.UPDATE_REPLAY_ENTITY, updateReplayEntitySaga),
  ]);
}

/**
 * This Saga is called if the type of update is a property change
 * @param replay
 * @returns
 */
export function* openPropertyPaneSaga(replay: any) {
  try {
    if (Object.keys(replay.widgets).length > 1) {
      yield put(selectWidgetAction(replay.widgets[0], false));
    }

    const replayWidgetId = Object.keys(replay.widgets)[0];

    if (!replayWidgetId || !replay.widgets[replayWidgetId].propertyUpdates)
      return;

    scrollWidgetIntoView(replayWidgetId);

    const isPropertyPaneVisible: boolean = yield select(
      getIsPropertyPaneVisible,
    );
    const selectedWidgetId: string = yield select(getCurrentWidgetId);

    //if property pane is not visible, select the widget and force open property pane
    if (selectedWidgetId !== replayWidgetId || !isPropertyPaneVisible) {
      yield put(selectWidgetAction(replayWidgetId, false));
    }

    flashElementsById(
      btoa(
        replay.widgets[replayWidgetId].propertyUpdates.slice(0, 2).join("."),
      ),
      0,
      1000,
    );
  } catch (e) {
    log.error(e);
    Sentry.captureException(e);
  }
}

/**
 * This saga is called when type of chenge is not a property Change
 * @param replay
 * @returns
 */
export function* postUndoRedoSaga(replay: any) {
  try {
    const isPropertyPaneVisible: boolean = yield select(
      getIsPropertyPaneVisible,
    );

    if (isPropertyPaneVisible) yield put(closePropertyPane());

    // display toasts if it is a destructive operation
    if (replay.toasts && replay.toasts.length > 0) {
      processUndoRedoToasts(replay.toasts);
    }

    if (!replay.widgets || Object.keys(replay.widgets).length <= 0) return;

    const widgetIds = Object.keys(replay.widgets);

    if (widgetIds.length > 1) {
      yield put(selectMultipleWidgetsInitAction(widgetIds));
    } else {
      yield put(selectWidgetAction(widgetIds[0], false));
    }
    scrollWidgetIntoView(widgetIds[0]);
  } catch (e) {
    log.error(e);
    Sentry.captureException(e);
  }
}

/**
 * saga that listen for UNDO_REDO_OPERATION
 * it won't do anything in case of sniping/comment mode
 *
 * @param action
 * @returns
 */
export function* undoRedoSaga(action: ReduxAction<UndoRedoPayload>) {
  const isSnipingMode: boolean = yield select(snipingModeSelector);

  // if the app is in snipping or comments mode, don't do anything
  if (isSnipingMode) return;
  try {
    const history = createBrowserHistory();
    const pathname = history.location.pathname;
    const { id, type } = getEntityInCurrentPath(pathname);
    const entityId = type === "page" ? "canvas" : id;
    // @ts-expect-error: workerResponse is of type unknown
    const workerResponse = yield call(
      workerComputeUndoRedo,
      action.payload.operation,
      entityId,
    );

    // if there is no change, then don't do anythingÎ
    if (!workerResponse) return;

    const {
      event,
      logs,
      paths,
      replay,
      replayEntity,
      replayEntityType,
      timeTaken,
    } = workerResponse;

    logs && logs.forEach((evalLog: any) => log.debug(evalLog));

    if (replay.theme) {
      yield call(replayThemeSaga, replayEntity, replay);

      return;
    }
    switch (replayEntityType) {
      case ENTITY_TYPE.WIDGET: {
        const isPropertyUpdate = replay.widgets && replay.propertyUpdates;
        AnalyticsUtil.logEvent(event, { paths, timeTaken });

        yield put(
          updateAndSaveLayout(replayEntity.widgets, {
            isRetry: false,
            shouldReplay: false,
          }),
        );
        if (isPropertyUpdate) {
          yield put(generateAutoHeightLayoutTreeAction(true, false));
          yield call(openPropertyPaneSaga, replay);
        }
        if (!isPropertyUpdate) {
          yield call(postUndoRedoSaga, replay);
        }
        break;
      }
      case ENTITY_TYPE.ACTION:
        yield call(replayActionSaga, replayEntity, replay);
        break;
      case ENTITY_TYPE.DATASOURCE: {
        yield call(replayDatasourceSaga, replayEntity, replay);
        break;
      }
      case ENTITY_TYPE.JSACTION:
        yield put(
          updateJSCollectionBody(replayEntity.body, replayEntity.id, true),
        );
        break;
    }
  } catch (e) {
    log.error(e);
    Sentry.captureException(e);
  }
}

/**
 * replay theme actions
 *
 * @param replayEntity
 * @param replay
 */
function* replayThemeSaga(replayEntity: Canvas, replay: any) {
  const applicationId: string = yield select(getCurrentApplicationId);

  // if theme is changed, open the theme selector
  if (replay.themeChanged) {
    yield put(
      setAppThemingModeStackAction([AppThemingMode.APP_THEME_SELECTION]),
    );
  } else {
    yield put(setAppThemingModeStackAction([]));
  }

  yield put(selectWidgetAction());

  // todo(pawan): check with arun/rahul on how we can get rid of this check
  // better way to do is set shouldreplay = false when evaluating tree
  if (replayEntity.theme.id) {
    yield put(
      updateSelectedAppThemeAction({
        theme: replayEntity.theme,
        shouldReplay: false,
        applicationId,
      }),
    );
  }
}

function* replayActionSaga(
  replayEntity: Action,
  replay: { updates: ReplayEditorUpdate[] },
) {
  const { updates = [] } = replay;
  /**
   * Pick one diff to determine tab switching.
   * Diffs across multiple tabs are unlikely
   */
  const { modifiedProperty } = updates[updates.length - 1] || {};
  const { currentTab } = yield call(
    getEditorFieldConfig,
    replayEntity,
    modifiedProperty,
  );

  /**
   * Check if tab needs to be switched and switch is necessary
   * Delay change if tab needs to be switched
   */
  const didSwitch: boolean = yield call(switchTab, currentTab);
  if (didSwitch) yield delay(REPLAY_FOCUS_DELAY);

  //Reinitialize form
  const currentFormName =
    isQueryAction(replayEntity) || isSaaSAction(replayEntity)
      ? QUERY_EDITOR_FORM_NAME
      : API_EDITOR_FORM_NAME;
  yield put(initialize(currentFormName, replayEntity));

  //Begin modified field highlighting
  highlightReplayElement(
    updates.map((u: ReplayEditorUpdate) => u.modifiedProperty),
  );

  /**
   * Update all the diffs in the action object.
   * We need this for debugger logs, dynamicBindingPathList and to call relevant APIs */
  yield all(
    updates.map((u) =>
      put(
        setActionProperty({
          actionId: replayEntity.id,
          propertyName: u.modifiedProperty,
          value:
            u.kind === "A" ? _.get(replayEntity, u.modifiedProperty) : u.update,
          skipSave: true,
        }),
      ),
    ),
  );

  //Save the updated action object
  yield put(updateAction({ id: replayEntity.id }));
}

function* replayDatasourceSaga(
  replayEntity: Datasource,
  replay: { updates: ReplayEditorUpdate[] },
) {
  const { updates = [] } = replay;
  const { modifiedProperty } = updates[updates.length - 1] || {};
  const { fieldInfo: { parentSection = "" } = {} } = yield call(
    getDatasourceFieldConfig,
    replayEntity,
    modifiedProperty,
  );
  /**
   *  Check if the modified field is under a collapsed section and expand if necessary
   *  Delay change if accordion needs to be expanded
   */
  const didExpand: boolean = yield call(expandAccordion, parentSection);
  if (didExpand) yield delay(REPLAY_FOCUS_DELAY);

  /**
   * Reinitialize redux form
   * Attribute "datasourceId" is used as a differentiator between rest-api datasources and the others */
  if (replayEntity.hasOwnProperty("datasourceId")) {
    yield put(initialize(DATASOURCE_REST_API_FORM, replayEntity));
  } else {
    yield put(initialize(DATASOURCE_DB_FORM, _.omit(replayEntity, ["name"])));
  }

  // Highlight modified fields
  highlightReplayElement(
    updates.map((u: ReplayEditorUpdate) => u.modifiedProperty),
  );
}

/*
  Figure out the field config of the last modified field in datasource forms
*/
function* getDatasourceFieldConfig(
  replayEntity: Datasource,
  modifiedProperty: string,
) {
  const formConfig: [Record<any, any>] = yield select(
    getPluginForm,
    replayEntity.pluginId,
  );
  const fieldInfo = findFieldInfo(formConfig, modifiedProperty);
  return { fieldInfo };
}

/*
  Figure out the tab in which the last modified field is present and the
  field config of the last modified field.
*/
function* getEditorFieldConfig(replayEntity: Action, modifiedProperty: string) {
  let currentTab = "";
  let fieldInfo = {};
  if (!modifiedProperty) return { currentTab, fieldInfo };
  if (isAPIAction(replayEntity)) {
    if (modifiedProperty.includes("headers"))
      currentTab = API_EDITOR_TABS.HEADERS;
    else if (modifiedProperty.includes("queryParameters"))
      currentTab = API_EDITOR_TABS.PARAMS;
    else if (modifiedProperty.includes("body"))
      currentTab = API_EDITOR_TABS.BODY;
    else if (
      modifiedProperty.includes("pagination") ||
      modifiedProperty.includes("next") ||
      modifiedProperty.includes("previous")
    )
      currentTab = API_EDITOR_TABS.PAGINATION;
    if (!currentTab) {
      const settingsConfig: [Record<any, any>] = yield select(
        getSettingConfig,
        replayEntity.pluginId,
      );
      fieldInfo = findFieldInfo(settingsConfig, modifiedProperty);
      if (!isEmpty(fieldInfo)) currentTab = API_EDITOR_TABS.SETTINGS;
    }
  } else {
    const editorConfig: [Record<any, any>] = yield select(
      getEditorConfig,
      replayEntity.pluginId,
    );
    fieldInfo = findFieldInfo(editorConfig, modifiedProperty);
    if (!isEmpty(fieldInfo)) {
      currentTab = EDITOR_TABS.QUERY;
    } else {
      const settingsConfig: [Record<any, any>] = yield select(
        getSettingConfig,
        replayEntity.pluginId,
      );
      fieldInfo = findFieldInfo(settingsConfig, modifiedProperty);
      if (!isEmpty(fieldInfo)) currentTab = EDITOR_TABS.SETTINGS;
    }
  }
  return { currentTab, fieldInfo };
}