56 lines
1.5 KiB
JavaScript
56 lines
1.5 KiB
JavaScript
const R = require('ramda')
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module.exports = {
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unscoped,
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cryptoScoped,
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machineScoped,
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scoped
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}
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function matchesValue (crypto, machine, instance) {
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return instance.fieldLocator.fieldScope.crypto === crypto &&
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instance.fieldLocator.fieldScope.machine === machine
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}
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function permutations (crypto, machine) {
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return R.uniq([
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[crypto, machine],
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[crypto, 'global'],
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['global', machine],
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['global', 'global']
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])
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}
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function fallbackValue (crypto, machine, instances) {
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const notNil = R.pipe(R.isNil, R.not)
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const pickValue = arr => R.find(instance => matchesValue(arr[0], arr[1], instance), instances)
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const fallbackRec = R.find(notNil, R.map(pickValue, permutations(crypto, machine)))
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return fallbackRec && fallbackRec.fieldValue.value
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}
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function generalScoped (crypto, machine, config) {
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const scopedValue = (key, instances) =>
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fallbackValue(crypto, machine, instances)
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const allScopes = key => config.filter(R.pathEq(['fieldLocator', 'code'], key))
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const keys = R.uniq(R.map(r => r.fieldLocator.code, config))
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const keyedValues = keys.map(key => scopedValue(key, allScopes(key)))
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return R.fromPairs(keys, keyedValues)
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}
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function machineScoped (machine, config) {
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return generalScoped('global', machine, config)
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}
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function unscoped (config) {
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return generalScoped('global', 'global', config)
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}
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function cryptoScoped (crypto, config) {
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return generalScoped(crypto, 'global', config)
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}
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function scoped (crypto, machine, config) {
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return generalScoped(crypto, machine, config)
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}
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