import { Mode, Retailer } from '../entities/Enums';

export class HostExtractor {
  readonly mode: Mode;
  readonly isAgentMode: boolean;
  readonly retailer: Retailer;

  constructor($location: ng.ILocationService) {
    const hostRegex = /^.*(switch|movein)(-csa)?(-\w+)?\.(.*)$/;

    try {
      const [/*ignore*/, mode, csa, /*ignore*/, site] = $location.host().match(hostRegex);
      this.mode = this.getMode(mode);
      this.isAgentMode = !!csa;
      this.retailer = this.getRetailer(site);
    } catch (e) {
      console.warn("Host URL malformed. Make sure you are accessing the site via a 'switch-xyz' route")
    }
  }

  private getMode(mode: string): Mode {
    switch (mode) {
      case 'switch': return 'Switch';
      case 'movein': return 'MoveIn';
    }
  }

  private getRetailer(site: string): Retailer {
    switch (site) {
      case 'ovoenergy.com': return 'OVO';
      case 'fairerpower.co.uk': return 'Fairerpower';
      case 'peterboroughenergy.co.uk': return 'PeterboroughEnergy';
      case 'southendenergy.co.uk': return 'SouthendEnergy';
      case 'energysw.co.uk': return 'EnergySW';
    }
  }
}