Code coverage report for src/navigation-plan.js

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import {Redirect} from './navigation-commands';
import {_resolveUrl} from './util';
 
/**
* The strategy to use when activating modules during navigation.
*/
export const activationStrategy = {
  noChange: 'no-change',
  invokeLifecycle: 'invoke-lifecycle',
  replace: 'replace'
};
 
export class BuildNavigationPlanStep {
  run(navigationInstruction: NavigationInstruction, next: Function) {
    return _buildNavigationPlan(navigationInstruction)
      .then(plan => {
        navigationInstruction.plan = plan;
        return next();
      }).catch(next.cancel);
  }
}
 
export function _buildNavigationPlan(instruction: NavigationInstruction, forceLifecycleMinimum): Promise<Object> {
  let prev = instruction.previousInstruction;
  let config = instruction.config;
  let plan = {};
 
  if ('redirect' in config) {
    let redirectLocation = _resolveUrl(config.redirect, getInstructionBaseUrl(instruction));
    Eif (instruction.queryString) {
      redirectLocation += '?' + instruction.queryString;
    }
 
    return Promise.reject(new Redirect(redirectLocation));
  }
 
  if (prev) {
    let newParams = hasDifferentParameterValues(prev, instruction);
    let pending = [];
 
    for (let viewPortName in prev.viewPortInstructions) {
      let prevViewPortInstruction = prev.viewPortInstructions[viewPortName];
      let nextViewPortConfig = config.viewPorts[viewPortName];
 
      Iif (!nextViewPortConfig) throw new Error(`Invalid Route Config: Configuration for viewPort "${viewPortName}" was not found for route: "${instruction.config.route}."`);
 
      let viewPortPlan = plan[viewPortName] = {
        name: viewPortName,
        config: nextViewPortConfig,
        prevComponent: prevViewPortInstruction.component,
        prevModuleId: prevViewPortInstruction.moduleId
      };
 
      if (prevViewPortInstruction.moduleId !== nextViewPortConfig.moduleId) {
        viewPortPlan.strategy = activationStrategy.replace;
      } else if ('determineActivationStrategy' in prevViewPortInstruction.component.viewModel) {
        viewPortPlan.strategy = prevViewPortInstruction.component.viewModel
          .determineActivationStrategy(...instruction.lifecycleArgs);
      } else if (config.activationStrategy) {
        viewPortPlan.strategy = config.activationStrategy;
      } else if (newParams || forceLifecycleMinimum) {
        viewPortPlan.strategy = activationStrategy.invokeLifecycle;
      } else {
        viewPortPlan.strategy = activationStrategy.noChange;
      }
 
      Iif (viewPortPlan.strategy !== activationStrategy.replace && prevViewPortInstruction.childRouter) {
        let path = instruction.getWildcardPath();
        let task = prevViewPortInstruction.childRouter
          ._createNavigationInstruction(path, instruction).then(childInstruction => { // eslint-disable-line no-loop-func
            viewPortPlan.childNavigationInstruction = childInstruction;
 
            return _buildNavigationPlan(
              childInstruction,
              viewPortPlan.strategy === activationStrategy.invokeLifecycle)
              .then(childPlan => {
                childInstruction.plan = childPlan;
              });
          });
 
        pending.push(task);
      }
    }
 
    return Promise.all(pending).then(() => plan);
  }
 
  for (let viewPortName in config.viewPorts) {
    plan[viewPortName] = {
      name: viewPortName,
      strategy: activationStrategy.replace,
      config: instruction.config.viewPorts[viewPortName]
    };
  }
 
  return Promise.resolve(plan);
}
 
function hasDifferentParameterValues(prev: NavigationInstruction, next: NavigationInstruction): boolean {
  let prevParams = prev.params;
  let nextParams = next.params;
  let nextWildCardName = next.config.hasChildRouter ? next.getWildCardName() : null;
 
  for (let key in nextParams) {
    Iif (key === nextWildCardName) {
      continue;
    }
 
    if (prevParams[key] !== nextParams[key]) {
      return true;
    }
  }
 
  for (let key in prevParams) {
    Iif (key === nextWildCardName) {
      continue;
    }
 
    if (prevParams[key] !== nextParams[key]) {
      return true;
    }
  }
 
  if (!next.options.compareQueryParams) {
    return false;
  }
 
  let prevQueryParams = prev.queryParams;
  let nextQueryParams = next.queryParams;
  for (let key in nextQueryParams) {
    Eif (prevQueryParams[key] !== nextQueryParams[key]) {
      return true;
    }
  }
 
  for (let key in prevQueryParams) {
    if (prevQueryParams[key] !== nextQueryParams[key]) {
      return true;
    }
  }
 
  return false;
}
 
function getInstructionBaseUrl(instruction: NavigationInstruction): string {
  let instructionBaseUrlParts = [];
  instruction = instruction.parentInstruction;
 
  while (instruction) {
    instructionBaseUrlParts.unshift(instruction.getBaseUrl());
    instruction = instruction.parentInstruction;
  }
 
  instructionBaseUrlParts.unshift('/');
  return instructionBaseUrlParts.join('');
}