add merge artifact sub-action

src/merge/input-helper.ts

@@ -0,0 +1,44 @@
+import * as core from '@actions/core'
+import {Inputs} from './constants'
+import {MergeInputs} from './merge-inputs'
+
+/**
+ * Helper to get all the inputs for the action
+ */
+export function getInputs(): MergeInputs {
+  const name = core.getInput(Inputs.Name, {required: true})
+  const pattern = core.getInput(Inputs.Pattern, {required: true})
+  const separateDirectories = core.getBooleanInput(Inputs.SeparateDirectories)
+  const deleteMerged = core.getBooleanInput(Inputs.DeleteMerged)
+
+  const inputs = {
+    name,
+    pattern,
+    separateDirectories,
+    deleteMerged,
+    retentionDays: 0,
+    compressionLevel: 6
+  } as MergeInputs
+
+  const retentionDaysStr = core.getInput(Inputs.RetentionDays)
+  if (retentionDaysStr) {
+    inputs.retentionDays = parseInt(retentionDaysStr)
+    if (isNaN(inputs.retentionDays)) {
+      core.setFailed('Invalid retention-days')
+    }
+  }
+
+  const compressionLevelStr = core.getInput(Inputs.CompressionLevel)
+  if (compressionLevelStr) {
+    inputs.compressionLevel = parseInt(compressionLevelStr)
+    if (isNaN(inputs.compressionLevel)) {
+      core.setFailed('Invalid compression-level')
+    }
+
+    if (inputs.compressionLevel < 0 || inputs.compressionLevel > 9) {
+      core.setFailed('Invalid compression-level. Valid values are 0-9')
+    }
+  }
+
+  return inputs
+}