import { AbstractProvider } from '../model/abstract.provider';

const GLOBAL_MAP_NAME: string = 'spellProvider';

export class SandStormService {
    private static instance: SandStormService = new SandStormService();
    private readonly cache: any;

    private constructor() {
        this.cache = global[GLOBAL_MAP_NAME] = global[GLOBAL_MAP_NAME] || {};
    }

    public setProvider(provider: AbstractProvider, internalIdentifier?: string): void {
        if (internalIdentifier) {
            this.cache[internalIdentifier] = provider;
        } else {
            const providerKey: string = provider.constructor.name;

            if (providerKey) {
                this.cache[provider.constructor.name] = provider;
            } else {
                console.log('\x1b[31m', '\x1b[2m', `The Provider with the name ${providerKey} has already been provided.`, '\x1b[0m');
            }
        }
    }

    public getProvider(providerClass: any): AbstractProvider {
        const providerKey: string = typeof providerClass === 'string' ? providerClass : providerClass.name;

        return this.cache[providerKey];
    }

    public static getInstance(): SandStormService {
        return this.instance;
    }
}