
<#
.SYNOPSIS
    将所有包含 'status: hidden' 的文章标记为草稿 (draft: true)。

.DESCRIPTION
    此脚本用于批量处理 Hugo 文章。它会遍历 content/post 目录下的所有 .md 文件，
    解析 Front Matter。如果发现 'status: hidden' 且没有 'draft: true'，
    则会在 'status: hidden' 下一行添加 'draft: true'，以确保 Hugo 不会生成这些页面。
    
    脚本包含安全检查：
    1. 确保读取和写入使用 UTF-8 编码。
    2. 确保新内容不为空。
    3. 确保文件大小没有异常减小（防止数据丢失）。

.EXAMPLE
    .\scripts\add_draft_to_hidden.ps1
#>

$postsPath = "content/post"
$files = Get-ChildItem -Path $postsPath -Recurse -Filter "*.md"
$count = 0

Write-Host "Starting scan for hidden posts..." -ForegroundColor Cyan

foreach ($file in $files) {
    # Read with UTF8
    $content = Get-Content $file.FullName -Raw -Encoding UTF8
    
    if ([string]::IsNullOrEmpty($content)) {
        Write-Warning "Skipping empty file: $($file.Name)"
        continue
    }

    # Check for 'status: hidden'
    if ($content -match "(?m)^status:\s*hidden") {
        
        # Check if 'draft: true' is already present
        if ($content -notmatch "(?m)^draft:\s*true") {
            Write-Host "Processing: $($file.Name)"
            
            # Use regex replace
            # Capture the status: hidden line and append draft: true
            # Note: `n is newline in PowerShell
            $newContent = $content -replace "(?m)(^status:\s*hidden.*$)", "`$1`ndraft: true"
            
            # SAFETY CHECK: Ensure new content is not empty and size is reasonable
            if ([string]::IsNullOrEmpty($newContent) -or $newContent.Length -eq 0) {
                Write-Error "CRITICAL: New content is empty for $($file.Name). Skipping save."
                continue
            }
            
            # SAFETY CHECK: Ensure we haven't lost significant data (e.g. > 10% size drop)
            if ($newContent.Length -lt ($content.Length * 0.9)) {
                Write-Error "CRITICAL: Suspicious size drop for $($file.Name). Skipping save."
                continue
            }
            
            # Save file using .NET method to ensure UTF8 no BOM (or compatible UTF8)
            [System.IO.File]::WriteAllText($file.FullName, $newContent, [System.Text.Encoding]::UTF8)
            Write-Host "  -> Updated." -ForegroundColor Green
            $count++
        }
    }
}

Write-Host "Completed. Updated $count files." -ForegroundColor Cyan