Add sourcecred functions and db fetch functions

src/utils.ts

@@ -0,0 +1,72 @@
+import { sourcecred } from 'sourcecred'
+import { config } from 'dotenv'
+
+import User, { IUser } from './models/User'
+import LedgerUpdate from './models/LedgerUpdate'
+
+config()
+
+export const log = (message) => console.log(`${Date.now()}: ${message}`)
+
+const fetchLastLedgerUpdate = async (): Promise<number> => {
+  const lastLedgerUpdateEntry = await LedgerUpdate.find({}).sort('-modifiedAt').limit(1)
+
+  return lastLedgerUpdateEntry.length ? lastLedgerUpdateEntry[0].modifiedAt : 0
+}
+
+export const fetchModifiedUsers = async (): Promise<IUser[]> => {
+  const lastLedgerUpdate = await fetchLastLedgerUpdate()
+  const foundUsers = await User.find({
+     modifiedAt: { $gte: lastLedgerUpdate }
+  })
+
+  return foundUsers
+}
+
+const storage = new sourcecred.ledger.storage.GithubStorage({
+  apiToken: process.env.GITHUB_API_TOKEN,
+  repo: process.env.REPO,
+  branch: process.env.BRANCH
+})
+
+export const manager = new sourcecred.ledger.manager.LedgerManager({ storage })
+
+export const loadLedger = async () => {
+  const ledger = await manager.reloadLedger()
+
+  return ledger
+}
+
+export const createDiscourseIdentity = (discourse, ledger) => {
+  const newDiscourseIdentityId = ledger.createIdentity(
+    'USER',
+    ledger.nameAvailable(discourse) ? discourse : `${discourse}-discourse`
+  )
+
+  ledger.addAlias(
+    newDiscourseIdentityId,
+    {
+      description: `discourse/[@${discourse}](https://forum.1hive.org/u/${discourse}/)`,
+      address: `N\u0000sourcecred\u0000discourse\u0000user\u0000https://forum.1hive.org\u0000${discourse}\u0000`
+    }
+  )
+
+  return newDiscourseIdentityId
+}
+
+export const createGithubIdentity = (github, ledger) => {
+  const newGithubIdentityId = ledger.createIdentity(
+    'USER',
+    ledger.nameAvailable(github) ? github : `${github}-github`
+  )
+
+  ledger.addAlias(
+    newGithubIdentityId,
+    {
+      description: `github/[@${github}](https://github.com/${github})`,
+      address: `N\u0000sourcecred\u0000github\u0000USERLIKE\u0000USER\u0000${github}\u0000`
+    }
+  )
+
+  return newGithubIdentityId
+}