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user.state.ts
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user.state.ts
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import { Action, NgxsOnInit, Selector, State, StateContext } from '@ngxs/store';
import { tap } from 'rxjs/operators';
import { StorageService } from '../../services/storage.service';
import { InitUser, LogIn, LogOut, SetLanguage } from './user.action';
import { UserService } from './user.service';
export interface UserStateModel {
login?: string;
password?: string;
language?: string;
}
@State<UserStateModel>({
name: 'user'
})
export class UserState implements NgxsOnInit {
constructor(private userService: UserService, private storageService: StorageService) {}
@Selector()
static login({ login }: UserStateModel): string | undefined {
return login;
}
@Selector()
static language({ language }: UserStateModel): string | undefined {
return language;
}
ngxsOnInit({ dispatch, patchState }: StateContext<UserStateModel>) {
this.storageService.init();
}
@Action(InitUser)
initUser({ patchState }: StateContext<UserStateModel>, { user }: InitUser) {
patchState({ ...user });
}
@Action(LogIn)
logIn({ patchState }: StateContext<UserStateModel>, { login, password }: LogIn) {
return this.userService.logIn(login, password).pipe(
tap(() =>
patchState({
login,
password
})
)
);
}
@Action(LogOut)
logOut({ patchState }: StateContext<UserStateModel>) {
patchState({
login: undefined,
password: undefined
});
}
@Action(SetLanguage)
setLanguage({ getState, patchState }: StateContext<UserStateModel>, { language }: SetLanguage) {
language = language || getState().language || this.userService.getDefaultLanguage();
return this.userService.setLanguage(language).pipe(tap(() => patchState({ language })));
}
}