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const _ = require('lodash');
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const Debug = require('../../helper/debug');
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const debugLog = new Debug('controller:predicates:is_layer_requested');
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const stackTraceLine = require('../../helper/stackTraceLine');
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// this function returns true IFF request.clean.layers is either undefined or
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// contains the supplied layer
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module.exports = layer => {
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return (request, response) => {
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// default request.clean.layers to the requested layer for simpler "contains" logic
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const is_layer_requested = _.get(request, ['clean', 'layers'], [layer]).indexOf(layer) >= 0;
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debugLog.push(request, () => ({
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reply: is_layer_requested,
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stack_trace: stackTraceLine()
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}));
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return is_layer_requested;
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};
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};
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