/**
 * @license
 * Copyright Google LLC All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */
import { concat, defer, from, of, pipe } from 'rxjs';
import { concatMap, first, map, mergeMap, tap } from 'rxjs/operators';
import { ActivationStart, ChildActivationStart } from '../events';
import { redirectingNavigationError } from '../navigation_canceling_error';
import { isUrlTree } from '../url_tree';
import { wrapIntoObservable } from '../utils/collection';
import { getClosestRouteInjector } from '../utils/config';
import { getCanActivateChild, getTokenOrFunctionIdentity } from '../utils/preactivation';
import { isBoolean, isCanActivate, isCanActivateChild, isCanDeactivate, isCanLoad, isCanMatch } from '../utils/type_guards';
import { prioritizedGuardValue } from './prioritized_guard_value';
export function checkGuards(injector, forwardEvent) {
    return mergeMap(t => {
        const { targetSnapshot, currentSnapshot, guards: { canActivateChecks, canDeactivateChecks } } = t;
        if (canDeactivateChecks.length === 0 && canActivateChecks.length === 0) {
            return of({ ...t, guardsResult: true });
        }
        return runCanDeactivateChecks(canDeactivateChecks, targetSnapshot, currentSnapshot, injector)
            .pipe(mergeMap(canDeactivate => {
            return canDeactivate && isBoolean(canDeactivate) ?
                runCanActivateChecks(targetSnapshot, canActivateChecks, injector, forwardEvent) :
                of(canDeactivate);
        }), map(guardsResult => ({ ...t, guardsResult })));
    });
}
function runCanDeactivateChecks(checks, futureRSS, currRSS, injector) {
    return from(checks).pipe(mergeMap(check => runCanDeactivate(check.component, check.route, currRSS, futureRSS, injector)), first(result => {
        return result !== true;
    }, true));
}
function runCanActivateChecks(futureSnapshot, checks, injector, forwardEvent) {
    return from(checks).pipe(concatMap((check) => {
        return concat(fireChildActivationStart(check.route.parent, forwardEvent), fireActivationStart(check.route, forwardEvent), runCanActivateChild(futureSnapshot, check.path, injector), runCanActivate(futureSnapshot, check.route, injector));
    }), first(result => {
        return result !== true;
    }, true));
}
/**
 * This should fire off `ActivationStart` events for each route being activated at this
 * level.
 * In other words, if you're activating `a` and `b` below, `path` will contain the
 * `ActivatedRouteSnapshot`s for both and we will fire `ActivationStart` for both. Always
 * return
 * `true` so checks continue to run.
 */
function fireActivationStart(snapshot, forwardEvent) {
    if (snapshot !== null && forwardEvent) {
        forwardEvent(new ActivationStart(snapshot));
    }
    return of(true);
}
/**
 * This should fire off `ChildActivationStart` events for each route being activated at this
 * level.
 * In other words, if you're activating `a` and `b` below, `path` will contain the
 * `ActivatedRouteSnapshot`s for both and we will fire `ChildActivationStart` for both. Always
 * return
 * `true` so checks continue to run.
 */
function fireChildActivationStart(snapshot, forwardEvent) {
    if (snapshot !== null && forwardEvent) {
        forwardEvent(new ChildActivationStart(snapshot));
    }
    return of(true);
}
function runCanActivate(futureRSS, futureARS, injector) {
    const canActivate = futureARS.routeConfig ? futureARS.routeConfig.canActivate : null;
    if (!canActivate || canActivate.length === 0)
        return of(true);
    const canActivateObservables = canActivate.map((canActivate) => {
        return defer(() => {
            const closestInjector = getClosestRouteInjector(futureARS) ?? injector;
            const guard = getTokenOrFunctionIdentity(canActivate, closestInjector);
            const guardVal = isCanActivate(guard) ?
                guard.canActivate(futureARS, futureRSS) :
                closestInjector.runInContext(() => guard(futureARS, futureRSS));
            return wrapIntoObservable(guardVal).pipe(first());
        });
    });
    return of(canActivateObservables).pipe(prioritizedGuardValue());
}
function runCanActivateChild(futureRSS, path, injector) {
    const futureARS = path[path.length - 1];
    const canActivateChildGuards = path.slice(0, path.length - 1)
        .reverse()
        .map(p => getCanActivateChild(p))
        .filter(_ => _ !== null);
    const canActivateChildGuardsMapped = canActivateChildGuards.map((d) => {
        return defer(() => {
            const guardsMapped = d.guards.map((canActivateChild) => {
                const closestInjector = getClosestRouteInjector(d.node) ?? injector;
                const guard = getTokenOrFunctionIdentity(canActivateChild, closestInjector);
                const guardVal = isCanActivateChild(guard) ?
                    guard.canActivateChild(futureARS, futureRSS) :
                    closestInjector.runInContext(() => guard(futureARS, futureRSS));
                return wrapIntoObservable(guardVal).pipe(first());
            });
            return of(guardsMapped).pipe(prioritizedGuardValue());
        });
    });
    return of(canActivateChildGuardsMapped).pipe(prioritizedGuardValue());
}
function runCanDeactivate(component, currARS, currRSS, futureRSS, injector) {
    const canDeactivate = currARS && currARS.routeConfig ? currARS.routeConfig.canDeactivate : null;
    if (!canDeactivate || canDeactivate.length === 0)
        return of(true);
    const canDeactivateObservables = canDeactivate.map((c) => {
        const closestInjector = getClosestRouteInjector(currARS) ?? injector;
        const guard = getTokenOrFunctionIdentity(c, closestInjector);
        const guardVal = isCanDeactivate(guard) ?
            guard.canDeactivate(component, currARS, currRSS, futureRSS) :
            closestInjector.runInContext(() => guard(component, currARS, currRSS, futureRSS));
        return wrapIntoObservable(guardVal).pipe(first());
    });
    return of(canDeactivateObservables).pipe(prioritizedGuardValue());
}
export function runCanLoadGuards(injector, route, segments, urlSerializer) {
    const canLoad = route.canLoad;
    if (canLoad === undefined || canLoad.length === 0) {
        return of(true);
    }
    const canLoadObservables = canLoad.map((injectionToken) => {
        const guard = getTokenOrFunctionIdentity(injectionToken, injector);
        const guardVal = isCanLoad(guard) ?
            guard.canLoad(route, segments) :
            injector.runInContext(() => guard(route, segments));
        return wrapIntoObservable(guardVal);
    });
    return of(canLoadObservables)
        .pipe(prioritizedGuardValue(), redirectIfUrlTree(urlSerializer));
}
function redirectIfUrlTree(urlSerializer) {
    return pipe(tap((result) => {
        if (!isUrlTree(result))
            return;
        throw redirectingNavigationError(urlSerializer, result);
    }), map(result => result === true));
}
export function runCanMatchGuards(injector, route, segments, urlSerializer) {
    const canMatch = route.canMatch;
    if (!canMatch || canMatch.length === 0)
        return of(true);
    const canMatchObservables = canMatch.map(injectionToken => {
        const guard = getTokenOrFunctionIdentity(injectionToken, injector);
        const guardVal = isCanMatch(guard) ?
            guard.canMatch(route, segments) :
            injector.runInContext(() => guard(route, segments));
        return wrapIntoObservable(guardVal);
    });
    return of(canMatchObservables)
        .pipe(prioritizedGuardValue(), redirectIfUrlTree(urlSerializer));
}
//# 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* @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nimport {EnvironmentInjector, ProviderToken} from '@angular/core';\nimport {concat, defer, from, MonoTypeOperatorFunction, Observable, of, OperatorFunction, pipe} from 'rxjs';\nimport {concatMap, first, map, mergeMap, tap} from 'rxjs/operators';\n\nimport {ActivationStart, ChildActivationStart, Event} from '../events';\nimport {CanActivateChild, CanActivateChildFn, CanActivateFn, Route} from '../models';\nimport {redirectingNavigationError} from '../navigation_canceling_error';\nimport {NavigationTransition} from '../router';\nimport {ActivatedRouteSnapshot, RouterStateSnapshot} from '../router_state';\nimport {isUrlTree, UrlSegment, UrlSerializer, UrlTree} from '../url_tree';\nimport {wrapIntoObservable} from '../utils/collection';\nimport {getClosestRouteInjector} from '../utils/config';\nimport {CanActivate, CanDeactivate, getCanActivateChild, getTokenOrFunctionIdentity} from '../utils/preactivation';\nimport {isBoolean, isCanActivate, isCanActivateChild, isCanDeactivate, isCanLoad, isCanMatch} from '../utils/type_guards';\n\nimport {prioritizedGuardValue} from './prioritized_guard_value';\n\nexport function checkGuards(injector: EnvironmentInjector, forwardEvent?: (evt: Event) => void):\n    MonoTypeOperatorFunction<NavigationTransition> {\n  return mergeMap(t => {\n    const {targetSnapshot, currentSnapshot, guards: {canActivateChecks, canDeactivateChecks}} = t;\n    if (canDeactivateChecks.length === 0 && canActivateChecks.length === 0) {\n      return of({...t, guardsResult: true});\n    }\n\n    return runCanDeactivateChecks(canDeactivateChecks, targetSnapshot!, currentSnapshot, injector)\n        .pipe(\n            mergeMap(canDeactivate => {\n              return canDeactivate && isBoolean(canDeactivate) ?\n                  runCanActivateChecks(targetSnapshot!, canActivateChecks, injector, forwardEvent) :\n                  of(canDeactivate);\n            }),\n            map(guardsResult => ({...t, guardsResult})));\n  });\n}\n\nfunction runCanDeactivateChecks(\n    checks: CanDeactivate[], futureRSS: RouterStateSnapshot, currRSS: RouterStateSnapshot,\n    injector: EnvironmentInjector) {\n  return from(checks).pipe(\n      mergeMap(\n          check => runCanDeactivate(check.component, check.route, currRSS, futureRSS, injector)),\n      first(result => {\n        return result !== true;\n      }, true as boolean | UrlTree));\n}\n\nfunction runCanActivateChecks(\n    futureSnapshot: RouterStateSnapshot, checks: CanActivate[], injector: EnvironmentInjector,\n    forwardEvent?: (evt: Event) => void) {\n  return from(checks).pipe(\n      concatMap((check: CanActivate) => {\n        return concat(\n            fireChildActivationStart(check.route.parent, forwardEvent),\n            fireActivationStart(check.route, forwardEvent),\n            runCanActivateChild(futureSnapshot, check.path, injector),\n            runCanActivate(futureSnapshot, check.route, injector));\n      }),\n      first(result => {\n        return result !== true;\n      }, true as boolean | UrlTree));\n}\n\n/**\n * This should fire off `ActivationStart` events for each route being activated at this\n * level.\n * In other words, if you're activating `a` and `b` below, `path` will contain the\n * `ActivatedRouteSnapshot`s for both and we will fire `ActivationStart` for both. Always\n * return\n * `true` so checks continue to run.\n */\nfunction fireActivationStart(\n    snapshot: ActivatedRouteSnapshot|null,\n    forwardEvent?: (evt: Event) => void): Observable<boolean> {\n  if (snapshot !== null && forwardEvent) {\n    forwardEvent(new ActivationStart(snapshot));\n  }\n  return of(true);\n}\n\n/**\n * This should fire off `ChildActivationStart` events for each route being activated at this\n * level.\n * In other words, if you're activating `a` and `b` below, `path` will contain the\n * `ActivatedRouteSnapshot`s for both and we will fire `ChildActivationStart` for both. Always\n * return\n * `true` so checks continue to run.\n */\nfunction fireChildActivationStart(\n    snapshot: ActivatedRouteSnapshot|null,\n    forwardEvent?: (evt: Event) => void): Observable<boolean> {\n  if (snapshot !== null && forwardEvent) {\n    forwardEvent(new ChildActivationStart(snapshot));\n  }\n  return of(true);\n}\n\nfunction runCanActivate(\n    futureRSS: RouterStateSnapshot, futureARS: ActivatedRouteSnapshot,\n    injector: EnvironmentInjector): Observable<boolean|UrlTree> {\n  const canActivate = futureARS.routeConfig ? futureARS.routeConfig.canActivate : null;\n  if (!canActivate || canActivate.length === 0) return of(true);\n\n  const canActivateObservables =\n      canActivate.map((canActivate: CanActivateFn|ProviderToken<unknown>) => {\n        return defer(() => {\n          const closestInjector = getClosestRouteInjector(futureARS) ?? injector;\n          const guard = getTokenOrFunctionIdentity<CanActivate>(canActivate, closestInjector);\n          const guardVal = isCanActivate(guard) ?\n              guard.canActivate(futureARS, futureRSS) :\n              closestInjector.runInContext(() => (guard as CanActivateFn)(futureARS, futureRSS));\n          return wrapIntoObservable(guardVal).pipe(first());\n        });\n      });\n  return of(canActivateObservables).pipe(prioritizedGuardValue());\n}\n\nfunction runCanActivateChild(\n    futureRSS: RouterStateSnapshot, path: ActivatedRouteSnapshot[],\n    injector: EnvironmentInjector): Observable<boolean|UrlTree> {\n  const futureARS = path[path.length - 1];\n\n  const canActivateChildGuards = path.slice(0, path.length - 1)\n                                     .reverse()\n                                     .map(p => getCanActivateChild(p))\n                                     .filter(_ => _ !== null);\n\n  const canActivateChildGuardsMapped = canActivateChildGuards.map((d: any) => {\n    return defer(() => {\n      const guardsMapped =\n          d.guards.map((canActivateChild: CanActivateChildFn|ProviderToken<unknown>) => {\n            const closestInjector = getClosestRouteInjector(d.node) ?? injector;\n            const guard =\n                getTokenOrFunctionIdentity<CanActivateChild>(canActivateChild, closestInjector);\n            const guardVal = isCanActivateChild(guard) ?\n                guard.canActivateChild(futureARS, futureRSS) :\n                closestInjector.runInContext(() => guard(futureARS, futureRSS));\n            return wrapIntoObservable(guardVal).pipe(first());\n          });\n      return of(guardsMapped).pipe(prioritizedGuardValue());\n    });\n  });\n  return of(canActivateChildGuardsMapped).pipe(prioritizedGuardValue());\n}\n\nfunction runCanDeactivate(\n    component: Object|null, currARS: ActivatedRouteSnapshot, currRSS: RouterStateSnapshot,\n    futureRSS: RouterStateSnapshot, injector: EnvironmentInjector): Observable<boolean|UrlTree> {\n  const canDeactivate = currARS && currARS.routeConfig ? currARS.routeConfig.canDeactivate : null;\n  if (!canDeactivate || canDeactivate.length === 0) return of(true);\n  const canDeactivateObservables = canDeactivate.map((c: any) => {\n    const closestInjector = getClosestRouteInjector(currARS) ?? injector;\n    const guard = getTokenOrFunctionIdentity<any>(c, closestInjector);\n    const guardVal = isCanDeactivate(guard) ?\n        guard.canDeactivate(component, currARS, currRSS, futureRSS) :\n        closestInjector.runInContext<boolean|UrlTree>(\n            () => guard(component, currARS, currRSS, futureRSS));\n    return wrapIntoObservable(guardVal).pipe(first());\n  });\n  return of(canDeactivateObservables).pipe(prioritizedGuardValue());\n}\n\nexport function runCanLoadGuards(\n    injector: EnvironmentInjector, route: Route, segments: UrlSegment[],\n    urlSerializer: UrlSerializer): Observable<boolean> {\n  const canLoad = route.canLoad;\n  if (canLoad === undefined || canLoad.length === 0) {\n    return of(true);\n  }\n\n  const canLoadObservables = canLoad.map((injectionToken: any) => {\n    const guard = getTokenOrFunctionIdentity<any>(injectionToken, injector);\n    const guardVal = isCanLoad(guard) ?\n        guard.canLoad(route, segments) :\n        injector.runInContext<boolean|UrlTree>(() => guard(route, segments));\n    return wrapIntoObservable(guardVal);\n  });\n\n  return of(canLoadObservables)\n      .pipe(\n          prioritizedGuardValue(),\n          redirectIfUrlTree(urlSerializer),\n      );\n}\n\nfunction redirectIfUrlTree(urlSerializer: UrlSerializer):\n    OperatorFunction<UrlTree|boolean, boolean> {\n  return pipe(\n      tap((result: UrlTree|boolean) => {\n        if (!isUrlTree(result)) return;\n\n        throw redirectingNavigationError(urlSerializer, result);\n      }),\n      map(result => result === true),\n  );\n}\n\nexport function runCanMatchGuards(\n    injector: EnvironmentInjector, route: Route, segments: UrlSegment[],\n    urlSerializer: UrlSerializer): Observable<boolean> {\n  const canMatch = route.canMatch;\n  if (!canMatch || canMatch.length === 0) return of(true);\n\n  const canMatchObservables = canMatch.map(injectionToken => {\n    const guard = getTokenOrFunctionIdentity(injectionToken, injector);\n    const guardVal = isCanMatch(guard) ?\n        guard.canMatch(route, segments) :\n        injector.runInContext<boolean|UrlTree>(() => guard(route, segments));\n    return wrapIntoObservable(guardVal);\n  });\n\n  return of(canMatchObservables)\n      .pipe(\n          prioritizedGuardValue(),\n          redirectIfUrlTree(urlSerializer),\n      );\n}\n"]}