Set-StrictMode -Version Latest
$ErrorActionPreference = 'Stop'

function Write-Step {
  param([string]$Message)
  Write-Host "==> $Message" -ForegroundColor Cyan
}

function Write-Note {
  param([string]$Message)
  Write-Host "  -> $Message" -ForegroundColor DarkGray
}

function Assert-Command {
  param([string]$Name)

  if (-not (Get-Command $Name -ErrorAction SilentlyContinue)) {
    throw "Required command '$Name' was not found in PATH."
  }
}

function Resolve-AbsolutePath {
  param(
    [Parameter(Mandatory = $true)][string]$BasePath,
    [Parameter(Mandatory = $true)][string]$Path
  )

  if ([System.IO.Path]::IsPathRooted($Path)) {
    return [System.IO.Path]::GetFullPath($Path)
  }

  return [System.IO.Path]::GetFullPath((Join-Path $BasePath $Path))
}

function Invoke-Checked {
  param(
    [Parameter(Mandatory = $true)][string]$FilePath,
    [Parameter(Mandatory = $true)][string[]]$Arguments,
    [string]$WorkingDirectory
  )

  if ($WorkingDirectory) {
    Push-Location $WorkingDirectory
  }

  try {
    & $FilePath @Arguments

    if ($LASTEXITCODE -ne 0) {
      throw "Command failed: $FilePath $($Arguments -join ' ')"
    }
  } finally {
    if ($WorkingDirectory) {
      Pop-Location
    }
  }
}

function Invoke-DockerCompose {
  param(
    [Parameter(Mandatory = $true)][string]$ComposeFile,
    [Parameter(Mandatory = $true)][string[]]$Arguments,
    [string]$ProjectName,
    [string]$WorkingDirectory
  )

  $dockerArgs = @('compose', '-f', $ComposeFile)

  if ($ProjectName) {
    $dockerArgs += @('-p', $ProjectName)
  }

  $dockerArgs += $Arguments

  Invoke-Checked -FilePath 'docker' -Arguments $dockerArgs -WorkingDirectory $WorkingDirectory
}

function Wait-ForHttpOk {
  param(
    [Parameter(Mandatory = $true)][string]$Url,
    [int]$TimeoutSeconds = 120
  )

  $deadline = (Get-Date).AddSeconds($TimeoutSeconds)

  while ((Get-Date) -lt $deadline) {
    try {
      $response = Invoke-WebRequest -Uri $Url -UseBasicParsing -TimeoutSec 10

      if ($response.StatusCode -ge 200 -and $response.StatusCode -lt 300) {
        return
      }
    } catch {
      Start-Sleep -Seconds 2
      continue
    }

    Start-Sleep -Seconds 2
  }

  throw "Timed out waiting for a healthy response from $Url."
}