
<#
.SYNOPSIS
    将所有包含 'status: hidden' 的文章标记为草稿 (draft: true)，并清理冲突的设置。

.DESCRIPTION
    此脚本用于批量处理 Hugo 文章。它会遍历 content/posts 目录下的所有 .md 文件。
    如果发现 'status: hidden'：
    1. 将 'draft: false' 修改为 'draft: true'。
    2. 注释掉冲突的 'status: public' 设置。
    3. 如果没有 'draft: true'，则添加它。
    
    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。

.EXAMPLE
    .\scripts\add_draft_to_hidden.ps1
#>

$postsPath = "content/posts"
# Ensure path exists
if (-not (Test-Path $postsPath)) {
    Write-Error "Path not found: $postsPath"
    exit 1
}

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

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

# Set console encoding to UTF8 to correctly display filenames
[Console]::OutputEncoding = [System.Text.Encoding]::UTF8

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
    }

    $modified = $false
    $newContent = $content

    # Check for 'status: hidden' or 'status: "hidden"'
    if ($content -match "(?m)^status:\s*(`"hidden`"|hidden)") {
        
        # 1. Replace draft: false -> draft: true
        if ($newContent -match "(?m)^draft:\s*false") {
            $newContent = $newContent -replace "(?m)^draft:\s*false", "draft: true"
            $modified = $true
            Write-Host "  Fixed 'draft: false' in $($file.Name)" -ForegroundColor Yellow
        }
        
        # 2. Comment out status: public / status: "public"
        if ($newContent -match "(?m)^status:\s*(`"public`"|public)") {
            $newContent = $newContent -replace "(?m)(^status:\s*(`"public`"|public))", "# `$1 # Auto-hidden by script"
            $modified = $true
            Write-Host "  Commented out 'status: public' in $($file.Name)" -ForegroundColor Yellow
        }
        
        # 3. Ensure draft: true exists
        if ($newContent -notmatch "(?m)^draft:\s*true") {
            # Append after status: hidden
            $newContent = $newContent -replace "(?m)(^status:\s*(`"hidden`"|hidden).*$)", "`$1`ndraft: true"
            $modified = $true
            Write-Host "  Added 'draft: true' to $($file.Name)" -ForegroundColor Yellow
        }
        
        if ($modified) {
             # SAFETY CHECK: Ensure new content is not empty and size is reasonable
            if ([string]::IsNullOrEmpty($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 without BOM
            $utf8NoBom = New-Object System.Text.UTF8Encoding $false
            [System.IO.File]::WriteAllText($file.FullName, $newContent, $utf8NoBom)
            Write-Host "  -> Saved changes to $($file.Name)" -ForegroundColor Green
            $count++
        }
    }
}

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