import { Inject, Injectable, Optional } from '@angular/core';
import { NzSafeAny } from 'ng-zorro-antd/core/types';
import { deepMergeKey } from '../other/deep';
import { OhayoConfig, OhayoConfigKey, OHAYO_CONFIG } from './config.types';

@Injectable({ providedIn: 'root' })
export class OhayoConfigService {
  private config: OhayoConfig;

  constructor(@Optional() @Inject(OHAYO_CONFIG) defaultConfig?: OhayoConfig) {
    this.config = { ...defaultConfig };
  }

  get<T extends OhayoConfigKey>(componentName: T, key?: string): OhayoConfig[T] {
    const res = ((this.config[componentName] as { [key: string]: NzSafeAny }) || {}) as NzSafeAny;
    return key ? { [key]: res[key] } : res;
  }

  merge<T extends OhayoConfigKey>(componentName: T, ...defaultValues: OhayoConfig[T][]): OhayoConfig[T] {
    return deepMergeKey({}, true, ...defaultValues, this.get(componentName));
  }

  attach<T extends OhayoConfigKey>(componentThis: NzSafeAny, componentName: T, defaultValues: OhayoConfig[T]): void {
    Object.assign(componentThis, this.merge(componentName, defaultValues));
  }

  attachKey<T extends OhayoConfigKey>(componentThis: NzSafeAny, componentName: T, key: string): void {
    Object.assign(componentThis, this.get(componentName, key));
  }

  set<T extends OhayoConfigKey>(componentName: T, value: OhayoConfig[T]): void {
    this.config[componentName] = { ...this.config[componentName], ...value };
  }
}