import { Pipe, PipeTransform } from '@angular/core';
import { Sublevel, WorkflowLevel } from '@core/typings/workflow.typing';

@Pipe({
  name: 'gcCanDeleteOrDisableLevel'
})
export class CanDeleteOrDisableLevelPipe implements PipeTransform {

  transform (
    level: WorkflowLevel,
    sub: Sublevel,
    allLevels: WorkflowLevel[] = [],
    workflowHasApps = true,
    type: 'delete'|'disable'|'enable'
  ): boolean {
    const isSub = !!sub;
    const levelToEvaluate = sub || level;
    if (type === 'delete') {
      const passes = !workflowHasApps &&
        !levelToEvaluate.hasAutomationRules &&
        !levelToEvaluate.isDefaultLevelOnProgram;
      if (isSub) {
        return passes;
      } else {
        const notLastLevel = allLevels.length !== 1;
        const notLastNonDisabledLevel = allLevels.some((lvl) => {
          return !lvl.disabled && lvl.id !== level.id;
        });

        return passes && notLastLevel && notLastNonDisabledLevel;
      }
    } else if (type === 'disable') {
      if (isSub) {
        return true;
      } else {
        const notLastLevel = allLevels.some((lvl) => {
          return !lvl.disabled && lvl.id !== level.id;
        });

        return notLastLevel;
      }
    } else {
      if (isSub) {
        return !level.disabled;
      }

      return true;
    }
  }
}