import { omit, set } from "lodash";
import { observable, action, makeObservable, runInAction, computed } from "mobx";
// services
import { ViewService } from "services/view.service";
import { RootStore } from "store/root.store";
// types
import { IProjectView } from "types";

export interface IProjectViewStore {
  // states
  loader: boolean;
  error: any | null;
  // observables
  viewMap: Record<string, IProjectView>;
  // computed
  projectViews: string[] | null;
  // computed actions
  getViewById: (viewId: string) => IProjectView;
  // actions
  fetchViews: (workspaceSlug: string, projectId: string) => Promise<IProjectView[]>;
  fetchViewDetails: (workspaceSlug: string, projectId: string, viewId: string) => Promise<IProjectView>;
  createView: (workspaceSlug: string, projectId: string, data: Partial<IProjectView>) => Promise<IProjectView>;
  updateView: (
    workspaceSlug: string,
    projectId: string,
    viewId: string,
    data: Partial<IProjectView>
  ) => Promise<IProjectView>;
  deleteView: (workspaceSlug: string, projectId: string, viewId: string) => Promise<any>;
  addViewToFavorites: (workspaceSlug: string, projectId: string, viewId: string) => Promise<any>;
  removeViewFromFavorites: (workspaceSlug: string, projectId: string, viewId: string) => Promise<any>;
}

export class ProjectViewStore implements IProjectViewStore {
  // states
  loader: boolean = false;
  error: any | null = null;
  // observables
  viewMap: Record<string, IProjectView> = {};
  // root store
  rootStore;
  // services
  viewService;

  constructor(_rootStore: RootStore) {
    makeObservable(this, {
      // states
      loader: observable.ref,
      error: observable.ref,
      // observables
      viewMap: observable,
      // computed
      projectViews: computed,
      // computed actions
      getViewById: action,
      // actions
      fetchViews: action,
      fetchViewDetails: action,
      createView: action,
      updateView: action,
      deleteView: action,
      addViewToFavorites: action,
      removeViewFromFavorites: action,
    });

    this.rootStore = _rootStore;

    this.viewService = new ViewService();
  }

  get projectViews() {
    const projectId = this.rootStore.app.router.projectId;

    if (!projectId) return null;

    const viewIds = Object.keys(this.viewMap ?? {})?.filter((viewId) => this.viewMap?.[viewId]?.project === projectId);

    return viewIds;
  }

  getViewById = (viewId: string) => this.viewMap?.[viewId] ?? null;

  fetchViews = async (workspaceSlug: string, projectId: string) => {
    try {
      runInAction(() => {
        this.loader = true;
      });

      const response = await this.viewService.getViews(workspaceSlug, projectId);

      runInAction(() => {
        this.loader = false;
        response.forEach((view) => {
          set(this.viewMap, [view.id], view);
        });
      });

      return response;
    } catch (error) {
      runInAction(() => {
        this.loader = false;
        this.error = error;
      });

      throw error;
    }
  };

  fetchViewDetails = async (workspaceSlug: string, projectId: string, viewId: string): Promise<IProjectView> => {
    try {
      runInAction(() => {
        this.loader = true;
      });

      const response = await this.viewService.getViewDetails(workspaceSlug, projectId, viewId);

      runInAction(() => {
        this.loader = false;
        set(this.viewMap, [viewId], response);
      });

      return response;
    } catch (error) {
      runInAction(() => {
        this.loader = false;
        this.error = error;
      });

      throw error;
    }
  };

  createView = async (workspaceSlug: string, projectId: string, data: Partial<IProjectView>): Promise<IProjectView> => {
    try {
      const response = await this.viewService.createView(workspaceSlug, projectId, data);

      runInAction(() => {
        this.loader = false;
        set(this.viewMap, [response.id], response);
      });

      return response;
    } catch (error) {
      runInAction(() => {
        this.error = error;
      });

      throw error;
    }
  };

  updateView = async (
    workspaceSlug: string,
    projectId: string,
    viewId: string,
    data: Partial<IProjectView>
  ): Promise<IProjectView> => {
    try {
      const currentView = this.getViewById(viewId);

      runInAction(() => {
        set(this.viewMap, [viewId], { ...currentView, ...data });
      });

      const response = await this.viewService.patchView(workspaceSlug, projectId, viewId, data);

      return response;
    } catch (error) {
      this.fetchViewDetails(workspaceSlug, projectId, viewId);

      runInAction(() => {
        this.error = error;
      });

      throw error;
    }
  };

  deleteView = async (workspaceSlug: string, projectId: string, viewId: string): Promise<any> => {
    try {
      runInAction(() => {
        omit(this.viewMap, [viewId]);
      });

      await this.viewService.deleteView(workspaceSlug, projectId, viewId);
    } catch (error) {
      this.fetchViews(workspaceSlug, projectId);

      runInAction(() => {
        this.error = error;
      });

      throw error;
    }
  };

  addViewToFavorites = async (workspaceSlug: string, projectId: string, viewId: string) => {
    try {
      const currentView = this.getViewById(viewId);

      if (currentView?.is_favorite) return;

      runInAction(() => {
        set(this.viewMap, [viewId, "is_favorite"], true);
      });

      await this.viewService.addViewToFavorites(workspaceSlug, projectId, {
        view: viewId,
      });
    } catch (error) {
      console.error("Failed to add view to favorites in view store", error);

      runInAction(() => {
        set(this.viewMap, [viewId, "is_favorite"], false);
      });
    }
  };

  removeViewFromFavorites = async (workspaceSlug: string, projectId: string, viewId: string) => {
    try {
      const currentView = this.getViewById(viewId);

      if (!currentView?.is_favorite) return;

      runInAction(() => {
        set(this.viewMap, [viewId, "is_favorite"], false);
      });

      await this.viewService.removeViewFromFavorites(workspaceSlug, projectId, viewId);
    } catch (error) {
      console.error("Failed to remove view from favorites in view store", error);

      runInAction(() => {
        set(this.viewMap, [viewId, "is_favorite"], true);
      });
    }
  };
}