# Set the path to your posts directory
$postsPath = "content/post"

# Get all markdown files in the posts directory
$files = Get-ChildItem -Path $postsPath -Filter "*.md"

# Initialize max ID
$maxId = 0

# Loop through each file to find the maximum pid
foreach ($file in $files) {
    $content = Get-Content $file.FullName -Raw -Encoding UTF8
    
    # Check if the file has a pid field
    if ($content -match "(?m)^pid:\s*(\d+)") {
        $currentId = [int]$matches[1]
        if ($currentId -gt $maxId) {
            $maxId = $currentId
        }
    }
}

# Calculate the next ID
$nextId = $maxId + 1
Write-Host "Current max PID is $maxId. Next PID will be $nextId." -ForegroundColor Green

# Prompt user for the new post filename (slug)
$slug = Read-Host "Enter the filename for the new post (e.g., my-new-post, without .md extension)"

if ([string]::IsNullOrWhiteSpace($slug)) {
    Write-Error "Filename cannot be empty."
    exit
}

# Ensure the filename ends with .md (optional, hugo new handles it usually but let's be safe)
if (-not $slug.EndsWith(".md")) {
    $filename = "$slug.md"
} else {
    $filename = $slug
}

# Create the new post using Hugo
Write-Host "Creating new post: content/post/$filename"
hugo new "content/post/$filename"

# Path to the new file
$newFilePath = Join-Path $postsPath $filename

# Check if file was created successfully
if (Test-Path $newFilePath) {
    # Read the new file content
    $newFileContent = Get-Content $newFilePath -Raw -Encoding UTF8
    
    # Add the pid field to the front matter
    # Assuming front matter ends with --- or similar. 
    # We'll just insert it after the date or title, or at the end of the front matter.
    
    # Simple replacement to add pid after date
    if ($newFileContent -match "(?m)^date:.*$") {
        $newFileContent = $newFileContent -replace "(?m)(^date:.*$)", "`$1`npid: $nextId"
    } else {
        # Fallback: add to the end of the first YAML block if date not found
        if ($newFileContent -match "^---[\s\S]*?---") {
             $newFileContent = $newFileContent -replace "(?m)(^---[\s\S]*?)(\r?\n---)", "`$1`npid: $nextId`$2"
        }
    }
    
    # Save the updated content back to the file
    Set-Content -Path $newFilePath -Value $newFileContent -Encoding UTF8
    
    Write-Host "Successfully added 'pid: $nextId' to $newFilePath" -ForegroundColor Cyan
} else {
    Write-Error "Failed to create the new post file."
}