@ng-doc/builder/engine/core/operators/when-done.js

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"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.whenDone = whenDone;
exports.factoryChain = factoryChain;
const rxjs_1 = require("rxjs");
const operators_1 = require("rxjs/operators");
const types_1 = require("../types");
const distinct_pending_1 = require("./distinct-pending");
const join_builder_states_1 = require("./join-builder-states");
const stack_1 = require("./stack");
/**
 * Operator function that projects each source value to an Observable which is merged in the output Observable,
 * only if the source value is a BuilderDone state.
 *
 * The project function is applied to each value emitted by the source Observable. If the source value is a BuilderDone state,
 * the project function is called with the result of the BuilderDone state and the index as arguments, and the returned Observable
 * is merged into the output Observable. If the source value is not a BuilderDone state, it is emitted directly to the output Observable.
 * @param {Function} project - The function to apply to each BuilderDone value emitted by the source Observable.
 * @returns {OperatorFunction} - An OperatorFunction that emits the items from the source Observable or the projected Observables.
 */
function whenDone(project) {
    return (source) => source.pipe(
    // This will destroy the observable chain if the state is not a BuilderDone state
    (0, operators_1.switchMap)((state) => {
        if ((0, types_1.isBuilderDone)(state)) {
            return (0, rxjs_1.of)(state.result).pipe((0, operators_1.switchMap)(project));
        }
        return (0, rxjs_1.of)(state);
    }), (0, distinct_pending_1.distinctPending)());
}
/**
 *
 * @param tag
 * @param builders
 * @param project
 */
function factoryChain(tag, builders, project) {
    return (0, rxjs_1.combineLatest)(builders).pipe((0, operators_1.switchMap)((states) => (0, join_builder_states_1.joinBuilderStates)(tag, states, (...args) => (0, rxjs_1.combineLatest)(...project(...args)).pipe((0, operators_1.switchMap)((states) => (0, join_builder_states_1.joinBuilderStates)(tag, states, (...args) => (0, rxjs_1.of)(...args.map((result) => new types_1.BuilderDone(tag, result)))))))), (0, distinct_pending_1.distinctPending)(), (0, stack_1.addToStack)(tag));
}
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