#!/usr/bin/env pwsh

# Migration script for moving from packages/ to libs/
# This script helps maintain backward compatibility during the transition

$ErrorActionPreference = "Stop"
$PackagesDir = "g:\repos\stock-bot\packages"
$LibsDir = "g:\repos\stock-bot\libs"

function Write-ColorOutput($ForegroundColor) {
    $fc = $host.UI.RawUI.ForegroundColor
    $host.UI.RawUI.ForegroundColor = $ForegroundColor
    if ($args) {
        Write-Output $args
    }
    $host.UI.RawUI.ForegroundColor = $fc
}

function Create-PackageAlias {
    param (
        [string]$PackageName
    )
    
    $PackageDir = Join-Path $PackagesDir $PackageName
    $LibDir = Join-Path $LibsDir $PackageName
    
    # Check if the lib already exists
    if (-not (Test-Path $LibDir)) {
        Write-ColorOutput "Red" "Error: Library $PackageName not found in $LibsDir"
        return
    }
    
    # Create the package directory if it doesn't exist
    if (-not (Test-Path $PackageDir)) {
        New-Item -ItemType Directory -Force -Path $PackageDir | Out-Null
        Write-ColorOutput "Green" "Created directory: $PackageDir"
    }
    
    # Create a package.json that points to the lib
    $PackageJsonPath = Join-Path $PackageDir "package.json"
    $PackageJson = @{
        name = "@stock-bot/$PackageName"
        version = "1.0.0"
        description = "Alias package that points to the new library location"
        main = "../../libs/$PackageName/dist/index.js"
        types = "../../libs/$PackageName/dist/index.d.ts"
        files = @("README.md")
    }
    
    $JsonContent = $PackageJson | ConvertTo-Json -Depth 10
    Set-Content -Path $PackageJsonPath -Value $JsonContent
    Write-ColorOutput "Green" "Created alias package.json: $PackageJsonPath"
    
    # Create a README explaining what this is
    $ReadmePath = Join-Path $PackageDir "README.md"
    $ReadmeContent = @"
# $PackageName (Deprecated Path)

This package is now maintained in the \`libs/$PackageName\` directory.

This is a compatibility alias that points to the new location.

## Migration

Please update your imports to use the new path:

\`\`\`diff
- import { ... } from '@stock-bot/$PackageName'
+ import { ... } from '@stock-bot/$PackageName'
\`\`\`

You don't need to change your imports yet, but this path will be removed in a future version.
"@
    
    Set-Content -Path $ReadmePath -Value $ReadmeContent
    Write-ColorOutput "Green" "Created README: $ReadmePath"
}

# Create aliases for each library
Write-ColorOutput "Yellow" "Creating package aliases for backward compatibility..."
Create-PackageAlias "types"

# Create additional aliases as needed for other libraries

Write-ColorOutput "Blue" "✓ Aliases created successfully. Importing from either packages/ or libs/ will work."
Write-ColorOutput "Blue" "  Please prefer importing from libs/ in new code."