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/**
* Handles stitching ads into pages.
*
* At a high level:
* 1. Setup `AdStitcher` w/ content to stitch.
* 2. Pass to builder
* 3. Destructively consume tasks during building.
*/
"use strict";
import { isNull } from "../../foundation/json-parsing/server-data";
/**
* Creates a string identifier representing the position information for an ad stitch task.
* @param positionInfo The position information object to create an identifier for.
* @returns The string identifier.
*/
function stringIdentifierForPositionInfo(positionInfo) {
return `${positionInfo.shelfIdentifier}.${positionInfo.slot}`;
}
// region exports
/**
* Create a new ad stitcher
*/
export function newAdStitcher() {
return {
tasks: {},
};
}
/// Add task
export function addTask(stitcher, task) {
if (isNull(stitcher)) {
return;
}
const positionIdentifier = stringIdentifierForPositionInfo(task.positionInfo);
stitcher.tasks[positionIdentifier] = task;
}
/**
* Consume a single task, if available, for a given position information.
* @param stitcher The relevant ad stitcher.
* @param positionInfo The position information to check for an available task.
* @returns A task for the position, or null if unavailable.
*/
export function consumeTask(stitcher, positionInfo) {
if (isNull(stitcher)) {
return null;
}
const positionIdentifier = stringIdentifierForPositionInfo(positionInfo);
const task = stitcher.tasks[positionIdentifier];
if (isNull(task)) {
return null;
}
delete stitcher.tasks[positionIdentifier];
return task;
}
/**
* Consume all tasks for a given shelf identifier. Useful where ad data is being stitched in prior to view models being built.
* @param stitcher The relevant ad stitcher.
* @param shelfIdentifier The identifier for the shelf to get all available tasks for.
* @returns An array of relevant tasks for the shelf.
*/
export function consumeTasksForShelfIdentifier(stitcher, shelfIdentifier) {
if (isNull(stitcher)) {
return [];
}
const tasksForShelf = [];
Object.entries(stitcher.tasks).forEach(([key, value]) => {
if (key.startsWith(shelfIdentifier)) {
tasksForShelf.push(value);
delete stitcher.tasks[key];
}
});
return tasksForShelf;
}
//# sourceMappingURL=ad-stitcher.js.map
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