import copy from 'copy-to-clipboard';
import { action, makeAutoObservable, observable } from 'mobx';
import { toast } from 'react-toastify';

import { userService } from 'App/services';

import User from './types/user';

export default class UserStore {
  list: User[] = [];
  instance: User | null = null;
  page: number = 1;
  pageSize: number = 10;
  searchQuery: string = '';
  modifiedCount: number = 0;

  loading: boolean = false;
  saving: boolean = false;
  limits: any = {};
  initialDataFetched: boolean = false;

  constructor() {
    makeAutoObservable(this, {
      instance: observable,
      updateUser: action,
      updateKey: action,
      initUser: action,
      setLimits: action,
    });
  }

  fetchLimits(): Promise<any> {
    return new Promise((resolve, reject) => {
      userService
        .getLimits()
        .then((response: any) => {
          this.setLimits(response);
          resolve(response);
        })
        .catch((error: any) => {
          reject(error);
        });
    });
  }

  setLimits(limits: any) {
    this.limits = limits;
  }

  initUser(user?: any): Promise<void> {
    return new Promise((resolve) => {
      if (user) {
        this.instance = new User().fromJson(user.toJson());
      } else {
        this.instance = new User();
      }
      resolve();
    });
  }

  updateKey(key: keyof this, value: any) {
    this[key] = value;

    if (key === 'searchQuery') {
      this.page = 1;
    }
  }

  updateUser(user: User) {
    const index = this.list.findIndex((u) => u.userId === user.userId);
    if (index > -1) {
      this.list[index] = user;
    }
  }

  fetchUser(userId: string): Promise<any> {
    this.loading = true;
    return new Promise((resolve, reject) => {
      userService
        .one(userId)
        .then((response) => {
          this.instance = new User().fromJson(response.data);
          resolve(response);
        })
        .catch((error) => {
          this.loading = false;
          reject(error);
        })
        .finally(() => {
          this.loading = false;
        });
    });
  }

  fetchUsers(): Promise<any> {
    this.loading = true;
    return new Promise((resolve, reject) => {
      userService
        .all()
        .then((response) => {
          this.list = response.map((user) => new User().fromJson(user));
          resolve(response);
        })
        .catch((error) => {
          this.loading = false;
          reject(error);
        })
        .finally(() => {
          this.loading = false;
        });
    });
  }

  saveUser(user: User): Promise<any> {
    this.saving = true;
    const wasCreating = !user.userId;
    return new Promise((resolve, reject) => {
      userService
        .save(user)
        .then((response) => {
          const newUser = new User().fromJson(response);
          if (wasCreating) {
            this.modifiedCount -= 1;
            this.list.push(newUser);
            toast.success('User created successfully');
          } else {
            this.updateUser(newUser);
            toast.success('User updated successfully');
          }
          resolve(response);
        })
        .catch(async (e) => {
          const err = await e.response?.json();
          this.saving = false;
          const errStr = err.errors[0]
            ? err.errors[0].includes('already exists')
              ? `This email is already linked to an account or team on OpenReplay and can't be used again.`
              : err.errors[0]
            : 'Error saving user';
          toast.error(errStr);
          reject(e);
        })
        .finally(() => {
          this.saving = false;
        });
    });
  }

  deleteUser(userId: string): Promise<any> {
    this.saving = true;
    return new Promise((resolve, reject) => {
      userService
        .delete(userId)
        .then((response) => {
          this.modifiedCount += 1;
          this.list = this.list.filter((user) => user.userId !== userId);
          resolve(response);
        })
        .catch((error) => {
          this.saving = false;
          toast.error('Error deleting user');
          reject(error);
        })
        .finally(() => {
          this.saving = false;
        });
    });
  }

  copyInviteCode(userId: string): void {
    const content = this.list.find((u) => u.userId === userId)?.invitationLink;
    if (content) {
      copy(content);
      toast.success('Invite code copied successfully');
    } else {
      toast.error('Invite code not found');
    }
  }

  generateInviteCode(userId: string): Promise<any> {
    this.saving = true;
    const promise = new Promise((resolve, reject) => {
      userService
        .generateInviteCode(userId)
        .then((response) => {
          const index = this.list.findIndex((u) => u.userId === userId);
          if (index > -1) {
            this.list[index].updateKey('isExpiredInvite', false);
            this.list[index].updateKey(
              'invitationLink',
              response.invitationLink
            );
          }
          resolve(response);
        })
        .catch((error) => {
          this.saving = false;
          reject(error);
        })
        .finally(() => {
          this.saving = false;
        });
    });

    toast.promise(promise, {
      pending: 'Generating an invite code...',
      success: 'Invite code generated successfully',
    });

    return promise;
  }
}