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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,101 @@ | ||
| import { coerce, inc } from 'semver'; | ||
| import { FhirArtifact } from './types/fhir'; | ||
| import { Bundle } from 'fhir/r4'; | ||
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| /** | ||
| * Helper function that returns the new version for an artifact. | ||
| * It increments the version if the artifact has one or sets it to | ||
| * 0.0.1 if it does not | ||
| */ | ||
| export async function calculateVersion(artifact: FhirArtifact) { | ||
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| let newVersion = '0.0.1'; | ||
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| // initial version coercion and increment | ||
| // we can only increment artifacts whose versions are either semantic, can be coerced | ||
| // to semantic, or are in x.x.xxx/x.xx.xxx format. Every other kind of version will become 0.0.1 | ||
| if (artifact.version) { | ||
| const coerced = coerce(artifact.version); | ||
| const incVersion = coerced !== null ? inc(coerced, 'patch') : null; | ||
| if (checkVersionFormat(artifact.version)) { | ||
| // check that it is x.x.xxx/x.xx.xxx, format and increment manually | ||
| newVersion = incrementArtifactVersion(artifact.version); | ||
| } else if (incVersion !== null) { | ||
| // if possible, coerce the version to semver, and increment | ||
| newVersion = incVersion; | ||
| } | ||
| } | ||
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| // subsequent version increments | ||
| if (artifact.url) { | ||
| let count = 0; | ||
| // check for existing draft with proposed version | ||
| let existingDraft = await getResourceByUrl(artifact.url, newVersion, artifact.resourceType); | ||
| // only increment a limited number of times | ||
| while (existingDraft && count < 10) { | ||
| // increment artifact version | ||
| const incVersion = inc(artifact.version, 'patch'); | ||
| newVersion = incVersion ?? incrementArtifactVersion(newVersion); | ||
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| existingDraft = await getResourceByUrl(artifact.url, newVersion, artifact.resourceType); | ||
| count++; | ||
| } | ||
| } | ||
| return newVersion; | ||
| } | ||
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| /** | ||
| * Increments an artifact version that is in x.x.xxx/x.xx.xxx format | ||
| */ | ||
| function incrementArtifactVersion(version: string): string { | ||
| const stringParts = version.split('.'); | ||
| const padMinor = stringParts[1].length === 2; //pad minor version if it's x.xx.xxx format | ||
| const versionParts = stringParts.map(Number); | ||
| // increment the patch version | ||
| versionParts[2]++; | ||
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| // if the patch version reaches 1000, reset it to 0 and increment the minor version | ||
| if (versionParts[2] >= 1000) { | ||
| versionParts[2] = 0; | ||
| versionParts[1]++; | ||
| } | ||
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| // if the minor version reaches 10/100 (depending on minor pad), reset it to 0 and increment the major version | ||
| const minorLimit = padMinor ? 100 : 10; | ||
| if (versionParts[1] >= minorLimit) { | ||
| versionParts[1] = 0; | ||
| versionParts[0]++; | ||
| } | ||
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| let formattedPatch = versionParts[2].toString(); | ||
| if (versionParts[2] < 100) { | ||
| formattedPatch = versionParts[2].toString().padStart(3, '0'); | ||
| } | ||
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| let formattedMinor = versionParts[1].toString(); | ||
| if (padMinor && versionParts[1] < 10) { | ||
| formattedMinor = versionParts[1].toString().padStart(2, '0'); | ||
| } | ||
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| return `${versionParts[0]}.${formattedMinor}.${formattedPatch}`; | ||
| } | ||
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| /** | ||
| * Takes in an artifact version and returns true if it is in x.x.xxx | ||
| * format and returns false if it is not | ||
| */ | ||
| function checkVersionFormat(version: string): boolean { | ||
| const format = /^\d\.\d{1,2}\.\d{3}$/; | ||
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| return format.test(version); | ||
| } | ||
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| // a function to check if the given url/version/resourceType exists on the server | ||
| // in order to decide whether to increment the version further | ||
| async function getResourceByUrl(url: string, version: string, resourceType: string) { | ||
| const res = await fetch(`${process.env.MRS_SERVER}/${resourceType}?url=${url}&version=${version}`); | ||
| const bundle:Bundle<FhirArtifact> = await res.json(); | ||
| // return first entry found in bundle | ||
| return bundle.entry && bundle.entry.length > 0 ? bundle.entry[0].resource : null; | ||
| } | ||
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