function Download-File {
  param (
    [string]$Url,
    [string]$File
  )
  Write-Host "Downloading $Url to $File"
  [Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12
  Invoke-WebRequest -Uri $url -OutFile $File
}

function Remove-Directory {
  param (
    [string]$Path
  )
  if ([System.IO.Directory]::Exists($Path)) {
    Write-Host "Deleting $Path"
    [System.IO.Directory]::Delete($Path, $true)
  }
}

function Unzip-File {
  param(
    [string]$File,
    [string]$Destination = (Get-Location).Path
  )

  $FilePath = Resolve-Path $File
  $DestinationPath = $ExecutionContext.SessionState.Path.GetUnresolvedProviderPathFromPSPath($Destination)

  If ($PSVersionTable.PSVersion.Major -ge 3) {
    [System.IO.Compression.ZipFile]::ExtractToDirectory("$FilePath", "$DestinationPath")
  }
  else {
    throw "Unzip-File is not supported on PowerShell versions less than 3.0"
  }
}

function Move-DirectoryContent {
  param (
    [string]$Source,
    [string]$Destination
  )

  $SourcePath = Resolve-Path $Source
  $DestinationPath = Resolve-Path $Destination

  Write-Output "Moving content of $SourcePath to $DestinationPath"
  Get-ChildItem -Path $SourcePath -Recurse | Move-Item -Destination $DestinationPath
}

$UserName = "tsugami"
$RepoName = "dotfiles"
$Branch = "master"

$DotfileTmpDir = $env:TEMP
$SourceFile = Join-Path $DotfileTmpDir "dotfiles.zip"
$DestPath = Join-Path $env:userprofile ".dotfiles"

Download-File "https://github.com/$UserName/$RepoName/archive/$Branch.zip" $SourceFile
Remove-Directory $DestPath
Unzip-File $SourceFile $DestPath

$ZipOutputDir = Join-Path $DestPath "$RepoName-$Branch"

Move-DirectoryContent $ZipOutputDir $DestPath
Remove-Directory $ZipOutputDir