/* This Source Code Form is subject to the terms of the Mozilla Public

* License, v. 2.0. If a copy of the MPL was not distributed with this

* file, You can obtain one at <http://mozilla.org/MPL/2.0/>. */

// @flow

import { getBreakpoints } from "../reducers/breakpoints";

import { getSelectedSource } from "../reducers/sources";

import { isGeneratedId } from "devtools-source-map";

import { createSelector } from "reselect";

import memoize from "../utils/memoize";

import type { BreakpointsMap } from "../reducers/types";

import type { Source } from "../types";

function getLocation(breakpoint, isGeneratedSource) {

return isGeneratedSource

? breakpoint.generatedLocation || breakpoint.location

: breakpoint.location;

}

const formatBreakpoint = memoize(function(breakpoint, selectedSource) {

const { condition, loading, disabled, hidden } = breakpoint;

const sourceId = selectedSource.id;

const isGeneratedSource = isGeneratedId(sourceId);

return {

location: getLocation(breakpoint, isGeneratedSource),

condition,

loading,

disabled,

hidden

};

});

function isVisible(breakpoint, selectedSource) {

const sourceId = selectedSource.id;

const isGeneratedSource = isGeneratedId(sourceId);

const location = getLocation(breakpoint, isGeneratedSource);

return location.sourceId === sourceId;

}

/*

* Finds the breakpoints, which appear in the selected source.

*/

export const getVisibleBreakpoints = createSelector(

getSelectedSource,

getBreakpoints,

(selectedSource: Source, breakpoints: BreakpointsMap) => {

if (!selectedSource) {

return null;

}

return breakpoints

.filter(bp => isVisible(bp, selectedSource))

.map(bp => formatBreakpoint(bp, selectedSource));

}

);