import Service, { inject as service } from '@ember/service';

interface ILocalStorage {
    setItem(key: string, value: any): void
    getItem(key: string): null|JSON
    removeItem(key: string): void
}

export default class LocalstorageService extends Service implements ILocalStorage {
    @service private session!: any;

    private namespace: string = 'tt4'

    public setItem(key: string, value: any ): void {
        localStorage.setItem(this.createKey(key), JSON.stringify(value))
    }

    public getItem(key: string) {
        const str = localStorage.getItem(this.createKey(key)) as string
        return JSON.parse(str)
    }

    public removeItem(key: string) {
        localStorage.removeItem(this.createKey(key))
    }

    public createKey(str: string) {
        const currentuser = this.session.currentUser?.id
        if (!currentuser) throw new Error('Cannot use localstorage service because currentUser is not set')
        return this.namespace + '.' + currentuser + '.' + str
    }
}