Add new API client to consolidate REST API calls

src/api-client.js

@@ -0,0 +1,87 @@
+const axios = require('axios')
+const core = require('@actions/core')
+
+async function enablePagesSite({ repositoryNwo, githubToken }) {
+  const pagesEndpoint = `https://api.github.com/repos/${repositoryNwo}/pages`
+
+  try {
+    const response = await axios.post(
+      pagesEndpoint,
+      { build_type: 'workflow' },
+      {
+        headers: {
+          Accept: 'application/vnd.github.v3+json',
+          Authorization: `Bearer ${githubToken}`,
+          'Content-type': 'application/json'
+        }
+      }
+    )
+
+    const pageObject = response.data
+    return pageObject
+  } catch (error) {
+    if (error.response && error.response.status === 409) {
+      return null
+    }
+
+    throw error
+  }
+}
+
+async function getPagesSite({ repositoryNwo, githubToken }) {
+  try {
+    const pagesEndpoint = `https://api.github.com/repos/${repositoryNwo}/pages`
+
+    const response = await axios.get(pagesEndpoint, {
+      headers: {
+        Accept: 'application/vnd.github.v3+json',
+        Authorization: `Bearer ${githubToken}`
+      }
+    })
+
+    const pageObject = response.data
+    return pageObject
+  } catch (error) {
+    throw error
+  }
+}
+
+async function findOrCreatePagesSite({ repositoryNwo, githubToken, enablement = true }) {
+  let pageObject
+
+  // Try to find an existing Pages site first
+  try {
+    pageObject = await getPagesSite({ repositoryNwo, githubToken })
+  } catch (error) {
+    if (!enablement) {
+      core.error('Get Pages site failed', error)
+      throw error
+    }
+    core.warning('Get Pages site failed', error)
+  }
+
+  if (!pageObject && enablement) {
+    // Create a new Pages site if one doesn't exist
+    try {
+      pageObject = await enablePagesSite({ repositoryNwo, githubToken })
+    } catch (error) {
+      core.error('Create Pages site failed', error)
+      throw error
+    }
+
+    // This somehow implies that the Pages site was already created but initially failed to be retrieved.
+    // Try one more time for this extreme edge case!
+    if (pageObject == null) {
+      try {
+        pageObject = await getPagesSite({ repositoryNwo, githubToken })
+      } catch (error) {
+        core.error('Get Pages site still failed', error)
+        throw error
+      }
+    }
+  }
+
+  return pageObject
+}
+
+module.exports = { findOrCreatePagesSite, enablePagesSite, getPagesSite }