From b77c639a3b6bbc320f92804fff55934ea867a21d Mon Sep 17 00:00:00 2001
From: "Alexander (Sasha) Nosov" <alex.nosov@hotmail.com>
Date: Fri, 25 Apr 2025 15:35:38 -0700
Subject: [PATCH] Initial readme

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 create mode 100644 manage/azure-arc-enabled-sql-server/manage-payg-transition/README.md

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+# Manage Transition to Pay-as-you-go subscription
+
+## Overview
+
+**schedule-pay-transition.ps1** is a PowerShell script that either:
+
+- **Runs once**: Downloads and invokes environment‑specific “pay transition” scripts for Azure, Arc, or both.
+- **Schedules itself**: Registers a Windows Scheduled Task to run daily at 2 AM, invoking itself in “Single” mode.
+
+It supports optional cleanup of downloaded files and passing extra parameters (target resource group, subscription, etc.) to the downstream scripts.
+
+---
+
+## Prerequisites
+
+- **PowerShell 5+.**
+- **User running needs to be Azure Subscription owner or contributor to be able to run the script.**  
+
+
+---
+
+## Parameters
+
+| Name                   | Mandatory | Type    | Acceptable Values        | Description                                                                                  |
+|------------------------|-----------|---------|--------------------------|----------------------------------------------------------------------------------------------|
+| `-Target`              | Yes       | String  | `Arc`, `Azure`, `Both`   | Which environment(s) to process.                                                             |
+| `-RunMode`             | Yes       | String  | `Single`, `Scheduled`    | `Single` runs immediately; `Scheduled` registers an NT Task to run daily at 2 AM.            |
+| `-cleanDownloads`      | No        | Boolean |                          | If `$true`, deletes the download folder after a single run.                                  |
+| `-UsePcoreLicense`     | No        | String  | `Yes`, `No`              | Passed to Arc script to control PCore licensing behavior (defaults to `No`).                 |
+| `-targetResourceGroup` | No        | String  |                          | Subscription resource group to target in downstream scripts.                                 |
+| `-targetSubscription`  | No        | String  |                          | Subscription ID to target in downstream scripts.                                             |
+| `-AutomationAccountName` | No      | String  |                          | Automation Account name for the “General” runbook import operation.                          |
+| `-Location`            | No        | String  |                          | Azure region for the “General” runbook import operation.                                     |
+
+---
+
+## How It Works
+
+1. **Script URL Configuration**  
+   - **General**: points to `set-azurerunbook.ps1` (imports & publishes the helper runbook).  
+   - **Azure**: points to `modify-azure-sql-license-type.ps1`.  
+   - **Arc**: points to `modify-license-type.ps1` for Arc‑enabled SQL.
+
+2. **Download Folder**  
+   - Creates `.\PayTransitionDownloads\` (relative) if missing.  
+   - Downloads chosen script(s) into it.
+
+3. **Invoke-RemoteScript**  
+   - Downloads a script via `Invoke-RestMethod`.  
+   - Invokes it with splatted parameter hashtable derived from `$scriptUrls[...] .Args`.
+
+4. **Modes**  
+   - **Single**: Invokes the selected scripts immediately and (optionally) cleans up.  
+   - **Scheduled**: Registers or updates a Scheduled Task (run as SYSTEM) to call itself every day at 2 AM with `-RunMode Single`.
+
+5. **Cleanup**  
+   - If `-cleanDownloads $true`, removes the download folder after a single run.
+
+---
+
+## Examples
+
+### Run Immediately
+#### Both Environments
+
+```powershell
+.\schedule-pay-transition.ps1 -Target Both -RunMode Single -cleanDownloads $true `
+    -UsePcoreLicense Yes `
+    -targetSubscription "00000000-0000-0000-0000-000000000000" `
+    -targetResourceGroup "MyRG" `
+    -AutomationAccountName "MyAutoAcct" `
+    -Location "EastUS"
+````
+
+### Arc Only, Single Run, With Cleanup
+```powershell
+.\schedule-pay-transition.ps1 `
+  -Target Arc `
+  -RunMode Single `
+  -cleanDownloads $true `
+  -UsePcoreLicense Yes `
+  -targetSubscription "11111111-1111-1111-1111-111111111111" `
+  -targetResourceGroup "ArcRG"
+````
+
+### Both Azure & Arc, Single Run, Full Parameters
+```powershell
+.\schedule-pay-transition.ps1 `
+  -Target Both `
+  -RunMode Single `
+  -cleanDownloads $true `
+  -UsePcoreLicense No `
+  -targetSubscription "22222222-2222-2222-2222-222222222222" `
+  -targetResourceGroup "HybridRG" `
+  -AutomationAccountName "MyAutomationAccount" `
+  -Location "EastUS"
+```
+### Scheduled-Run Scenarios
+
+#### Schedule Daily for Azure Only
+```powershell
+.\schedule-pay-transition.ps1 `
+  -Target Azure `
+  -RunMode Scheduled
+```
+#### Schedule Daily for Arc Only
+```powershell
+.\schedule-pay-transition.ps1 `
+  -Target Arc `
+  -RunMode Scheduled
+```
+
+#### Schedule Daily for Both Environments
+```powershell
+.\schedule-pay-transition.ps1 `
+  -Target Both `
+  -RunMode Scheduled
+```
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