Provision configured Geo database

src/db.ts

@@ -6,16 +6,30 @@ const ARANGODB_PASSWORD = process.env.ARANGODB_PASSWORD || ''
 
 let _db: Database | null = null
 
+function database(databaseName: string): Database {
+  const url = ARANGODB_URL.startsWith('http') ? ARANGODB_URL : `http://${ARANGODB_URL}`
+  return new Database({ url, databaseName, auth: { username: 'root', password: ARANGODB_PASSWORD } })
+}
+
 export function getDb(): Database {
   if (!_db) {
-    const url = ARANGODB_URL.startsWith('http') ? ARANGODB_URL : `http://${ARANGODB_URL}`
-    _db = new Database({ url, databaseName: ARANGODB_DATABASE, auth: { username: 'root', password: ARANGODB_PASSWORD } })
-    console.log(`Connected to ArangoDB: ${url}/${ARANGODB_DATABASE}`)
+    _db = database(ARANGODB_DATABASE)
+    console.log(`Connected to ArangoDB: ${ARANGODB_URL}/${ARANGODB_DATABASE}`)
   }
   return _db
 }
 
+async function ensureDatabase(): Promise<void> {
+  const system = database('_system')
+  const databases = await system.listDatabases()
+  if (!databases.includes(ARANGODB_DATABASE)) {
+    await system.createDatabase(ARANGODB_DATABASE)
+    console.log(`Created ArangoDB database: ${ARANGODB_DATABASE}`)
+  }
+}
+
 export async function ensureGraph(): Promise<void> {
+  await ensureDatabase()
   const db = getDb()
 
   const nodes = db.collection('nodes')