/**
 * @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 { ɵisInjectable as isInjectable } from '@angular/core';
import { equalParamsAndUrlSegments } from '../router_state';
import { equalPath } from '../url_tree';
import { shallowEqual } from '../utils/collection';
import { nodeChildrenAsMap } from '../utils/tree';
export class CanActivate {
    constructor(path) {
        this.path = path;
        this.route = this.path[this.path.length - 1];
    }
}
export class CanDeactivate {
    constructor(component, route) {
        this.component = component;
        this.route = route;
    }
}
export function getAllRouteGuards(future, curr, parentContexts) {
    const futureRoot = future._root;
    const currRoot = curr ? curr._root : null;
    return getChildRouteGuards(futureRoot, currRoot, parentContexts, [futureRoot.value]);
}
export function getCanActivateChild(p) {
    const canActivateChild = p.routeConfig ? p.routeConfig.canActivateChild : null;
    if (!canActivateChild || canActivateChild.length === 0)
        return null;
    return { node: p, guards: canActivateChild };
}
export function getTokenOrFunctionIdentity(tokenOrFunction, injector) {
    const NOT_FOUND = Symbol();
    const result = injector.get(tokenOrFunction, NOT_FOUND);
    if (result === NOT_FOUND) {
        if (typeof tokenOrFunction === 'function' && !isInjectable(tokenOrFunction)) {
            // We think the token is just a function so return it as-is
            return tokenOrFunction;
        }
        else {
            // This will throw the not found error
            return injector.get(tokenOrFunction);
        }
    }
    return result;
}
function getChildRouteGuards(futureNode, currNode, contexts, futurePath, checks = {
    canDeactivateChecks: [],
    canActivateChecks: []
}) {
    const prevChildren = nodeChildrenAsMap(currNode);
    // Process the children of the future route
    futureNode.children.forEach(c => {
        getRouteGuards(c, prevChildren[c.value.outlet], contexts, futurePath.concat([c.value]), checks);
        delete prevChildren[c.value.outlet];
    });
    // Process any children left from the current route (not active for the future route)
    Object.entries(prevChildren)
        .forEach(([k, v]) => deactivateRouteAndItsChildren(v, contexts.getContext(k), checks));
    return checks;
}
function getRouteGuards(futureNode, currNode, parentContexts, futurePath, checks = {
    canDeactivateChecks: [],
    canActivateChecks: []
}) {
    const future = futureNode.value;
    const curr = currNode ? currNode.value : null;
    const context = parentContexts ? parentContexts.getContext(futureNode.value.outlet) : null;
    // reusing the node
    if (curr && future.routeConfig === curr.routeConfig) {
        const shouldRun = shouldRunGuardsAndResolvers(curr, future, future.routeConfig.runGuardsAndResolvers);
        if (shouldRun) {
            checks.canActivateChecks.push(new CanActivate(futurePath));
        }
        else {
            // we need to set the data
            future.data = curr.data;
            future._resolvedData = curr._resolvedData;
        }
        // If we have a component, we need to go through an outlet.
        if (future.component) {
            getChildRouteGuards(futureNode, currNode, context ? context.children : null, futurePath, checks);
            // if we have a componentless route, we recurse but keep the same outlet map.
        }
        else {
            getChildRouteGuards(futureNode, currNode, parentContexts, futurePath, checks);
        }
        if (shouldRun && context && context.outlet && context.outlet.isActivated) {
            checks.canDeactivateChecks.push(new CanDeactivate(context.outlet.component, curr));
        }
    }
    else {
        if (curr) {
            deactivateRouteAndItsChildren(currNode, context, checks);
        }
        checks.canActivateChecks.push(new CanActivate(futurePath));
        // If we have a component, we need to go through an outlet.
        if (future.component) {
            getChildRouteGuards(futureNode, null, context ? context.children : null, futurePath, checks);
            // if we have a componentless route, we recurse but keep the same outlet map.
        }
        else {
            getChildRouteGuards(futureNode, null, parentContexts, futurePath, checks);
        }
    }
    return checks;
}
function shouldRunGuardsAndResolvers(curr, future, mode) {
    if (typeof mode === 'function') {
        return mode(curr, future);
    }
    switch (mode) {
        case 'pathParamsChange':
            return !equalPath(curr.url, future.url);
        case 'pathParamsOrQueryParamsChange':
            return !equalPath(curr.url, future.url) ||
                !shallowEqual(curr.queryParams, future.queryParams);
        case 'always':
            return true;
        case 'paramsOrQueryParamsChange':
            return !equalParamsAndUrlSegments(curr, future) ||
                !shallowEqual(curr.queryParams, future.queryParams);
        case 'paramsChange':
        default:
            return !equalParamsAndUrlSegments(curr, future);
    }
}
function deactivateRouteAndItsChildren(route, context, checks) {
    const children = nodeChildrenAsMap(route);
    const r = route.value;
    Object.entries(children).forEach(([childName, node]) => {
        if (!r.component) {
            deactivateRouteAndItsChildren(node, context, checks);
        }
        else if (context) {
            deactivateRouteAndItsChildren(node, context.children.getContext(childName), checks);
        }
        else {
            deactivateRouteAndItsChildren(node, null, checks);
        }
    });
    if (!r.component) {
        checks.canDeactivateChecks.push(new CanDeactivate(null, r));
    }
    else if (context && context.outlet && context.outlet.isActivated) {
        checks.canDeactivateChecks.push(new CanDeactivate(context.outlet.component, r));
    }
    else {
        checks.canDeactivateChecks.push(new CanDeactivate(null, r));
    }
}
//# 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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 {Injector, ProviderToken, ɵisInjectable as isInjectable} from '@angular/core';\n\nimport {RunGuardsAndResolvers} from '../models';\nimport {ChildrenOutletContexts, OutletContext} from '../router_outlet_context';\nimport {ActivatedRouteSnapshot, equalParamsAndUrlSegments, RouterStateSnapshot} from '../router_state';\nimport {equalPath} from '../url_tree';\nimport {shallowEqual} from '../utils/collection';\nimport {nodeChildrenAsMap, TreeNode} from '../utils/tree';\n\nexport class CanActivate {\n  readonly route: ActivatedRouteSnapshot;\n  constructor(public path: ActivatedRouteSnapshot[]) {\n    this.route = this.path[this.path.length - 1];\n  }\n}\n\nexport class CanDeactivate {\n  constructor(public component: Object|null, public route: ActivatedRouteSnapshot) {}\n}\n\nexport declare type Checks = {\n  canDeactivateChecks: CanDeactivate[],\n  canActivateChecks: CanActivate[],\n};\n\nexport function getAllRouteGuards(\n    future: RouterStateSnapshot, curr: RouterStateSnapshot,\n    parentContexts: ChildrenOutletContexts) {\n  const futureRoot = future._root;\n  const currRoot = curr ? curr._root : null;\n\n  return getChildRouteGuards(futureRoot, currRoot, parentContexts, [futureRoot.value]);\n}\n\nexport function getCanActivateChild(p: ActivatedRouteSnapshot):\n    {node: ActivatedRouteSnapshot, guards: any[]}|null {\n  const canActivateChild = p.routeConfig ? p.routeConfig.canActivateChild : null;\n  if (!canActivateChild || canActivateChild.length === 0) return null;\n  return {node: p, guards: canActivateChild};\n}\n\nexport function getTokenOrFunctionIdentity<T>(\n    tokenOrFunction: Function|ProviderToken<T>, injector: Injector): Function|T {\n  const NOT_FOUND = Symbol();\n  const result = injector.get<T|Symbol>(tokenOrFunction, NOT_FOUND);\n  if (result === NOT_FOUND) {\n    if (typeof tokenOrFunction === 'function' && !isInjectable(tokenOrFunction)) {\n      // We think the token is just a function so return it as-is\n      return tokenOrFunction;\n    } else {\n      // This will throw the not found error\n      return injector.get<T>(tokenOrFunction);\n    }\n  }\n  return result as T;\n}\n\nfunction getChildRouteGuards(\n    futureNode: TreeNode<ActivatedRouteSnapshot>, currNode: TreeNode<ActivatedRouteSnapshot>|null,\n    contexts: ChildrenOutletContexts|null, futurePath: ActivatedRouteSnapshot[], checks: Checks = {\n      canDeactivateChecks: [],\n      canActivateChecks: []\n    }): Checks {\n  const prevChildren = nodeChildrenAsMap(currNode);\n\n  // Process the children of the future route\n  futureNode.children.forEach(c => {\n    getRouteGuards(c, prevChildren[c.value.outlet], contexts, futurePath.concat([c.value]), checks);\n    delete prevChildren[c.value.outlet];\n  });\n\n  // Process any children left from the current route (not active for the future route)\n  Object.entries(prevChildren)\n      .forEach(\n          ([k, v]: [string, TreeNode<ActivatedRouteSnapshot>]) =>\n              deactivateRouteAndItsChildren(v, contexts!.getContext(k), checks));\n\n  return checks;\n}\n\nfunction getRouteGuards(\n    futureNode: TreeNode<ActivatedRouteSnapshot>, currNode: TreeNode<ActivatedRouteSnapshot>,\n    parentContexts: ChildrenOutletContexts|null, futurePath: ActivatedRouteSnapshot[],\n    checks: Checks = {\n      canDeactivateChecks: [],\n      canActivateChecks: []\n    }): Checks {\n  const future = futureNode.value;\n  const curr = currNode ? currNode.value : null;\n  const context = parentContexts ? parentContexts.getContext(futureNode.value.outlet) : null;\n\n  // reusing the node\n  if (curr && future.routeConfig === curr.routeConfig) {\n    const shouldRun =\n        shouldRunGuardsAndResolvers(curr, future, future.routeConfig!.runGuardsAndResolvers);\n    if (shouldRun) {\n      checks.canActivateChecks.push(new CanActivate(futurePath));\n    } else {\n      // we need to set the data\n      future.data = curr.data;\n      future._resolvedData = curr._resolvedData;\n    }\n\n    // If we have a component, we need to go through an outlet.\n    if (future.component) {\n      getChildRouteGuards(\n          futureNode, currNode, context ? context.children : null, futurePath, checks);\n\n      // if we have a componentless route, we recurse but keep the same outlet map.\n    } else {\n      getChildRouteGuards(futureNode, currNode, parentContexts, futurePath, checks);\n    }\n\n    if (shouldRun && context && context.outlet && context.outlet.isActivated) {\n      checks.canDeactivateChecks.push(new CanDeactivate(context.outlet.component, curr));\n    }\n  } else {\n    if (curr) {\n      deactivateRouteAndItsChildren(currNode, context, checks);\n    }\n\n    checks.canActivateChecks.push(new CanActivate(futurePath));\n    // If we have a component, we need to go through an outlet.\n    if (future.component) {\n      getChildRouteGuards(futureNode, null, context ? context.children : null, futurePath, checks);\n\n      // if we have a componentless route, we recurse but keep the same outlet map.\n    } else {\n      getChildRouteGuards(futureNode, null, parentContexts, futurePath, checks);\n    }\n  }\n\n  return checks;\n}\n\nfunction shouldRunGuardsAndResolvers(\n    curr: ActivatedRouteSnapshot, future: ActivatedRouteSnapshot,\n    mode: RunGuardsAndResolvers|undefined): boolean {\n  if (typeof mode === 'function') {\n    return mode(curr, future);\n  }\n  switch (mode) {\n    case 'pathParamsChange':\n      return !equalPath(curr.url, future.url);\n\n    case 'pathParamsOrQueryParamsChange':\n      return !equalPath(curr.url, future.url) ||\n          !shallowEqual(curr.queryParams, future.queryParams);\n\n    case 'always':\n      return true;\n\n    case 'paramsOrQueryParamsChange':\n      return !equalParamsAndUrlSegments(curr, future) ||\n          !shallowEqual(curr.queryParams, future.queryParams);\n\n    case 'paramsChange':\n    default:\n      return !equalParamsAndUrlSegments(curr, future);\n  }\n}\n\nfunction deactivateRouteAndItsChildren(\n    route: TreeNode<ActivatedRouteSnapshot>, context: OutletContext|null, checks: Checks): void {\n  const children = nodeChildrenAsMap(route);\n  const r = route.value;\n\n  Object.entries(children).forEach(([childName, node]) => {\n    if (!r.component) {\n      deactivateRouteAndItsChildren(node, context, checks);\n    } else if (context) {\n      deactivateRouteAndItsChildren(node, context.children.getContext(childName), checks);\n    } else {\n      deactivateRouteAndItsChildren(node, null, checks);\n    }\n  });\n\n  if (!r.component) {\n    checks.canDeactivateChecks.push(new CanDeactivate(null, r));\n  } else if (context && context.outlet && context.outlet.isActivated) {\n    checks.canDeactivateChecks.push(new CanDeactivate(context.outlet.component, r));\n  } else {\n    checks.canDeactivateChecks.push(new CanDeactivate(null, r));\n  }\n}\n"]}