From d782c8840a31749c57e632a8a4d0cdc18ef19e58 Mon Sep 17 00:00:00 2001
From: Mykola Morhun <mmorhun@redhat.com>
Date: Tue, 5 May 2020 12:33:17 +0300
Subject: [PATCH] [Helm] Generate password for Keycloak

Signed-off-by: Mykola Morhun <mmorhun@redhat.com>
---
 src/tasks/installers/common-tasks.ts |  2 +-
 src/tasks/installers/helm.ts         |  8 ++++++++
 src/util.ts                          | 29 ++++++++++++++++++++++++++++
 3 files changed, 38 insertions(+), 1 deletion(-)

diff --git a/src/tasks/installers/common-tasks.ts b/src/tasks/installers/common-tasks.ts
index 99d0b8411..11f8fc212 100644
--- a/src/tasks/installers/common-tasks.ts
+++ b/src/tasks/installers/common-tasks.ts
@@ -88,7 +88,7 @@ export function createEclipeCheCluster(flags: any, kube: KubeHelper): ListrTask
         }
 
         if (cr.spec.auth && cr.spec.auth.updateAdminPassword) {
-          ctx.highlightedMessages.push('You will be asked to change the default Che admin password on the first login.')
+          ctx.highlightedMessages.push('Eclipse Che admin credentials are: "admin:admin". You will be asked to change default Che admin password on the first login.')
         }
 
         task.title = `${task.title}...done.`
diff --git a/src/tasks/installers/helm.ts b/src/tasks/installers/helm.ts
index 79cd8a8e2..d0703edf6 100644
--- a/src/tasks/installers/helm.ts
+++ b/src/tasks/installers/helm.ts
@@ -21,6 +21,7 @@ import { KubeHelper } from '../../api/kube'
 import { VersionHelper } from '../../api/version'
 import { CHE_TLS_SECRET_NAME } from '../../constants'
 import { CertManagerTasks } from '../../tasks/component-installers/cert-manager'
+import { generatePassword } from '../../util'
 
 export class HelmTasks {
   protected kubeHelper: KubeHelper
@@ -333,6 +334,13 @@ error: E_COMMAND_FAILED`)
       setOptions.push(`--set global.chePostgresPVCStorageClassName=${flags['postgres-pvc-storage-class-name']}`)
     }
 
+    if (flags.multiuser) {
+      // Generate Keycloak admin password
+      const keycloakPassword = generatePassword(12)
+      setOptions.push(`--set che-keycloak.keycloakAdminUserPassword=${keycloakPassword}`)
+      ctx.highlightedMessages.push(`Autogenerated Keycloak credentials are: "admin:${keycloakPassword}"`)
+    }
+
     setOptions.push(`--set global.ingressDomain=${flags.domain}`)
     setOptions.push(`--set cheImage=${flags.cheimage}`)
     setOptions.push(`--set che.disableProbes=${flags.debug}`)
diff --git a/src/util.ts b/src/util.ts
index 39a5fd639..2c64404ad 100644
--- a/src/util.ts
+++ b/src/util.ts
@@ -31,3 +31,32 @@ export function isKubernetesPlatformFamily(platform: string): boolean {
 export function isOpenshiftPlatformFamily(platform: string): boolean {
   return platform === 'openshift' || platform === 'minishift' || platform === 'crc'
 }
+
+export function generatePassword(passwodLength: number, charactersSet = '') {
+  let dictionary: string[]
+  if (!charactersSet) {
+    const ZERO_CHAR_CODE = 48
+    const NINE_CHAR_CODE = 57
+    const A_CHAR_CODE = 65
+    const Z_CHAR_CODE = 90
+    const a_CHAR_CODE = 97
+    const z_CHAR_CODE = 122
+    const ranges = [[ZERO_CHAR_CODE, NINE_CHAR_CODE], [A_CHAR_CODE, Z_CHAR_CODE], [a_CHAR_CODE, z_CHAR_CODE]]
+
+    dictionary = []
+    for (let range of ranges) {
+      for (let charCode = range[0]; charCode <= range[1]; charCode++) {
+        dictionary.push(String.fromCharCode(charCode))
+      }
+    }
+  } else {
+    dictionary = [...charactersSet]
+  }
+
+  let generatedPassword = ''
+  for (let i = 0; i < passwodLength; i++) {
+    const randomIndex = Math.floor(Math.random() * dictionary.length)
+    generatedPassword += dictionary[randomIndex]
+  }
+  return generatedPassword
+}