## 1. REQUIREMENTS ##
### Here are the requirements necessary to ensure this is successful.

### a. Internal/Private Cloud Repository Set Up ###
#### You'll need an internal/private cloud repository you can use. These are
####  generally really quick to set up and there are quite a few options.
####  Chocolatey Software recommends Nexus, Artifactory Pro, or ProGet as they
####  are repository servers and will give you the ability to manage multiple
####  repositories and types from one server installation.

### b. Download Chocolatey Package and Put on Internal Repository ###
#### You need to have downloaded the Chocolatey package as well.
####  Please see https://chocolatey.org/install#organization

### c. Other Requirements ###

#### We initialize a few things that are needed by this script - there are no other requirements.
$ErrorActionPreference = "Stop"

#### Set TLS 1.2 (3072) as that is the minimum required by various up-to-date repositories.
#### Use integers because the enumeration value for TLS 1.2 won't exist
#### in .NET 4.0, even though they are addressable if .NET 4.5+ is
#### installed (.NET 4.5 is an in-place upgrade).
[System.Net.ServicePointManager]::SecurityProtocol = [System.Net.ServicePointManager]::SecurityProtocol -bor 3072

#### We use this variable for future REST calls.
$RequestArguments = @{
    UseBasicParsing = $true
}

## 2. TOP LEVEL VARIABLES ##

### a. Your internal repository url (the main one). ###
####  Should be similar to what you see when you browse
#### to https://dichvusuachua24h.com/api/v2/
$NugetRepositoryUrl = "INTERNAL REPO URL"

### b. Internal Repository Credential ###
#### If required, add the repository access credential here
# $NugetRepositoryCredential = [PSCredential]::new(
#     "username",
#     ("password" | ConvertTo-SecureString -AsPlainText -Force)
# )
# $RequestArguments.Credential = $NugetRepositoryCredential

### c. Chocolatey nupkg download url ###
#### This url should result in an immediate download when you navigate to it
$ChocolateyDownloadUrl = "$($NugetRepositoryUrl.TrimEnd('/'))/package/chocolatey.1.3.1.nupkg"

### d. Chocolatey Central Management (CCM) ###
#### If using CCM to manage Chocolatey, add the following:
#### i. Endpoint URL for CCM
# $ChocolateyCentralManagementUrl = "https://chocolatey-central-management:24020/ChocolateyManagementService"

#### ii. If using a Client Salt, add it here
# $ChocolateyCentralManagementClientSalt = "clientsalt"

#### iii. If using a Service Salt, add it here
# $ChocolateyCentralManagementServiceSalt = "servicesalt"

## 3. ENSURE CHOCOLATEY IS INSTALLED ##
### Ensure Chocolatey is installed from your internal repository

#### Download the Nupkg, appending .zip to the filename to handle archive cmdlet limitations
if (-not (Get-Command choco.exe -ErrorAction SilentlyContinue)) {
    $TempDirectory = Join-Path $env:Temp "chocolateyInstall"
    if (-not (Test-Path $TempDirectory -PathType Container)) {
        $null = New-Item -Path $TempDirectory -ItemType Directory
    }
    $DownloadedNupkg = Join-Path $TempDirectory "$(Split-Path $ChocolateyDownloadUrl -Leaf).zip"
    Invoke-WebRequest -Uri $ChocolateyDownloadUrl -OutFile $DownloadedNupkg @RequestArguments

    #### Extract the Nupkg, and run the chocolateyInstall script
    if (Get-Command Microsoft.PowerShell.Archive\Expand-Archive -ErrorAction SilentlyContinue) {
        Microsoft.PowerShell.Archive\Expand-Archive -Path $DownloadedNupkg -DestinationPath $TempDirectory -Force
    } else {
        # PowerShell versions <4.0 do not have this function available
        try {
            $shellApplication = New-Object -ComObject Shell.Application
            $zipPackage = $shellApplication.NameSpace($DownloadedNupkg)
            $destinationFolder = $shellApplication.NameSpace($TempDirectory)
            $destinationFolder.CopyHere($zipPackage.Items(), 0x10)
        } catch {
            Write-Warning "Unable to unzip package using built-in compression."
            throw $_
        }
    }

    & $(Join-Path $TempDirectory "tools\chocolateyInstall.ps1")
}

if (-not (Get-Command choco.exe -ErrorAction SilentlyContinue)) {
    refreshenv
}

## 4. CONFIGURE CHOCOLATEY BASELINE ##
### a. FIPS Feature ###
#### If you need FIPS compliance - make this the first thing you configure
#### before you do any additional configuration or package installations
# choco feature enable -n useFipsCompliantChecksums

### b. Apply Recommended Configuration ###
#### Move cache location so Chocolatey is very deterministic about
#### cleaning up temporary data and the location is secured to admins
choco config set --name cacheLocation --value C:\ProgramData\chocolatey\cache

#### Increase timeout to at least 4 hours
choco config set --name commandExecutionTimeoutSeconds --value 14400

#### Turn off download progress when running choco through integrations
choco feature disable --name showDownloadProgress

### c. Sources ###
#### Remove the default community package repository source
choco source list --limitoutput | ConvertFrom-Csv -Header 'Name', 'Location' -Delimiter '|' | ForEach-Object {
    if ($_.Location -eq 'https://dichvusuachua24h.com/api/v2/') {
        choco source remove -n $_.Name
    }
}

#### Add internal default sources
#### You could have multiple sources here, so we will provide an example
#### of one using the remote repo variable here

#### NOTE: This EXAMPLE may require changes
if ($NugetRepositoryCredential) {
    choco source add --name ChocolateyInternal --source $NugetRepositoryUrl --user $NugetRepositoryCredential.UserName --password $NugetRepositoryCredential.GetNetworkCredential().Password --priority 1
} else {
    choco source add --name ChocolateyInternal --source $NugetRepositoryUrl --priority 1
}

### b. Keep Chocolatey Up To Date ###
#### Keep chocolatey up to date based on your internal source
#### You control the upgrades based on when you push an updated version
####  to your internal repository.
#### Note the source here is to the OData feed, similar to what you see
####  when you browse to https://dichvusuachua24h.com/api/v2/
choco upgrade chocolatey --confirm

## 5. ENSURE CHOCOLATEY FOR BUSINESS ##
### If you don't have Chocolatey for Business (C4B), you'll want to remove from here down.

### a. Ensure The License File Is Installed ###
#### Create a license package using script from https://docs.chocolatey.org/en-us/how-tos/setup-offline-installation#exercise-4-create-a-package-for-the-license
choco install chocolatey-license --source $NugetRepositoryUrl --confirm

### b. Disable The Licensed Source ###
#### The licensed source cannot be removed, so it must be disabled.
#### This must occur after the license has been set by the license package.
if ("chocolatey-license" -in (choco list --localonly --limitoutput | ConvertFrom-Csv -Header "Name" -Delimiter "|").Name) {
    choco source disable --name chocolatey.licensed
} else {
    Write-Warning "Not disabling 'chocolatey.licensed' feed, as Chocolatey-License has not been installed."
}

### c. Ensure Chocolatey Licensed Extension ###
#### You will have downloaded the licensed extension to your internal repository
#### as you have disabled the licensed repository in step 5b.

#### Ensure the chocolatey.extension package (aka Chocolatey Licensed Extension)
if ("chocolatey-license" -in (choco list --localonly --limitoutput | ConvertFrom-Csv -Header "Name" -Delimiter "|").Name) {
    choco install chocolatey.extension --source $NugetRepositoryUrl --confirm
} else {
    Write-Warning "Not installing 'chocolatey.extension', as Chocolatey-License has not been installed."
}

#### The Chocolatey Licensed Extension unlocks all of the following, which also have configuration/feature items available with them. You may want to visit the feature pages to see what you might want to also enable:
#### - Package Builder - https://docs.chocolatey.org/en-us/features/paid/package-builder
#### - Package Internalizer - https://docs.chocolatey.org/en-us/features/paid/package-internalizer
#### - Package Synchronization (3 components) - https://docs.chocolatey.org/en-us/features/paid/package-synchronization
#### - Package Reducer - https://docs.chocolatey.org/en-us/features/paid/package-reducer
#### - Package Audit - https://docs.chocolatey.org/en-us/features/paid/package-audit
#### - Package Throttle - https://docs.chocolatey.org/en-us/features/paid/package-throttle
#### - CDN Cache Access - https://docs.chocolatey.org/en-us/features/paid/private-cdn
#### - Branding - https://docs.chocolatey.org/en-us/features/paid/branding
#### - Self-Service Anywhere (more components will need to be installed and additional configuration will need to be set) - https://docs.chocolatey.org/en-us/features/paid/self-service-anywhere
#### - Chocolatey Central Management (more components will need to be installed and additional configuration will need to be set) - https://docs.chocolatey.org/en-us/features/paid/chocolatey-central-management
#### - Other - https://docs.chocolatey.org/en-us/features/paid/

### d. Ensure Self-Service Anywhere ###
#### If you have desktop clients where users are not administrators, you may
#### to take advantage of deploying and configuring Self-Service anywhere
choco feature disable --name showNonElevatedWarnings
choco feature enable --name useBackgroundService
choco feature enable --name useBackgroundServiceWithNonAdministratorsOnly
choco feature enable --name allowBackgroundServiceUninstallsFromUserInstallsOnly
choco config set --name allowedBackgroundServiceCommands --value "install,upgrade,uninstall"

### e. Ensure Chocolatey Central Management ###
#### If you want to manage and report on endpoints, you can set up and configure
### Central Management. There are multiple portions to manage, so you'll see
### a section on agents here along with notes on how to configure the server
### side components.
if ($ChocolateyCentralManagementUrl) {
    choco install chocolatey-agent --source $NugetRepositoryUrl --confirm
    choco config set --name CentralManagementServiceUrl --value $ChocolateyCentralManagementUrl
    if ($ChocolateyCentralManagementClientSalt) {
        choco config set --name centralManagementClientCommunicationSaltAdditivePassword --value $ChocolateyCentralManagementClientSalt
    }
    if ($ChocolateyCentralManagementServiceSalt) {
        choco config set --name centralManagementServiceCommunicationSaltAdditivePassword --value $ChocolateyCentralManagementServiceSalt
    }
    choco feature enable --name useChocolateyCentralManagement
    choco feature enable --name useChocolateyCentralManagementDeployments
}