FromYmlToTOC-INDEX-MAP.ps1

[cmdletbinding()]
param (
    [string]$directory = (Get-Location)
)

function Get-DocumentMetadata {
    param (
        [System.IO.FileInfo] $file,
        [string] $relativepath
    )

    $properties = @{
        'Title' = ''
		'UID' = ''
        'RelativePath' = $relativepath.TrimStart('/')
        'Parent' = $file.DirectoryName
        'FileName' = $file.Name
        'tagline' = ''
        'imageAlt' = ''
        'imageSrc' = ''
        'twitter' = ''
        'location' = ''
        'display' = ''
        'lat' = ''
        'long' = ''


    }

    $metadata = New-Object -TypeName PSObject -Prop $properties
    $metadata.PSObject.TypeNames.Insert(0,'DocFX.DocumentMetadata')



    if ($file.Extension -eq '.yml') {
        
        if($file.Name -eq 'index.yml')
        {
			$script:indexTitle = Get-IndexTitle -file $file 
        }
        
        $title = Get-YamlProp -file $file -propName 'name'
        $metadata.Title = if ($title) { $title } 
		
		$uid = Get-YamlProp -file $file -propName 'uid'
        $metadata.UID = if ($uid) { $uid }

        $metadata.tagline = Get-YamlProp -file $file -propName 'tagline'
        #$metadata.twitter = Get-YamlProp -file $file -propName 'twitter'
        #$metadata.location = Get-YamlProp -file $file -propName 'location'
        $metadata.imageAlt = Get-YamlProp -file $file -propName '  alt'
        $metadata.imageSrc = Get-YamlProp -file $file -propName '  src'
        $metadata.display = Get-YamlProp -file $file -propName '  display'
        $metadata.lat = Get-YamlProp -file $file -propName '  lat'
        $metadata.long = Get-YamlProp -file $file -propName '  long'

        return $metadata
    }

    if ($file.Extension -eq '.md') {
		#$title = Get-MarkdownMetadata -file $file
		#$metadata.Title = if ($title) { $title } else { $file.Name }
        if($file.Name -eq 'index.md')
            {
			    $script:indexTitle = Get-IndexTitle -file $file
            }
        
        $title = Get-YamlProp -file $file -propName 'name'
        $metadata.Title = if ($title) { $title } 
		return $metadata
    }
}

function Get-IndexTitle {
    param (
        [System.IO.FileInfo] $file
    )

    $title = ([regex]'^title\:.+')

    # Look for the metadata.name property.
    foreach ($linegroup in (Get-Content $file.FullName -ReadCount 1000)) {
        if ($title.Match($linegroup).Success) {
            return $title.Match($linegroup).Groups[0].Value.Replace('title:', '').TrimStart(' ')
        }
    }    
}

function Get-YamlName {
    param (
        [System.IO.FileInfo] $file
    )

    $name = ([regex]'^name\:.+')

    # Look for the metadata.name property.
    foreach ($linegroup in (Get-Content $file.FullName -ReadCount 1000)) {
        if ($name.Match($linegroup).Success) {
            return $name.Match($linegroup).Groups[0].Value.Replace('name:', '').TrimStart(' ')
        }
    }    
}


function Get-YamlUID {
    param (
        [System.IO.FileInfo] $file
    )

    $uid = ([regex]'^uid\:.+')

    # Look for the metadata.title property.
    foreach ($linegroup in (Get-Content $file.FullName -ReadCount 1000)) {
		
        if ($uid.Match($linegroup).Success) {
            return $linegroup.Replace('uid:', '').TrimStart(' ')
        }
    }    
}

function Get-YamlProp {
    param (
        [System.IO.FileInfo] $file,
        [System.String] $propName

    )

    $propRegex = ([regex]'^{$propName}\:.+')

    # Look for the metadata.title property.
    foreach ($linegroup in (Get-Content -Encoding UTF8 $file.FullName -ReadCount 1000)) {
		
        #if ($propRegex.Match($linegroup).Success) {
        if ($linegroup -match '^'+$propName+'\:.+') 
        {    
            return $linegroup.Replace($propName+':', '').TrimStart(' ')
        }
    } 
    return "";   
}

function Remove-RootPath {
    param (
        [string] $rootpath,
        [string] $fullpath
    )

    return $fullpath.Replace($rootpath, '').Replace([IO.Path]::DirectorySeparatorChar, '/')
}

function Check-GlobMatch {
    param (
        [string[]] $patterns,
        [string] $matchpath
    )

    foreach ($pattern in $patterns) {
        $pattern_regex = ($pattern -split '\*\*' | ForEach-Object { $_.Replace('*', '[^\/]+') }) -join '.*'
        $match = $matchpath -match $pattern_regex

        Write-Verbose "Path $matchpath matches $pattern_regex : $match"
        if($match -eq $true)
        {
        return $match
        }
    }

    return $false
}

function Format-Yaml {
    param (
        $object
    )


    foreach ($item in $object) {
        $depth = $item.Name.Split('/').Length
        $index = $item.Group | Where-Object { $_.FileName -match "index.*" } | Select-Object -First 1
        $children = $item.Group | Where-Object { -Not ($_.FileName -match "index.*") }
        $indent = '  ' * $depth
        $startobject = ('  ' * ($depth - 1)) + '- '
        
		$uid = if ($index) { $index.UID } else { $item.Name.Split('/') | Select-Object -Last 1 }
        $name = $startobject + 'name: Regional Directors' #+ $indexTitle
        $href = if ($index.RelativePath) { $indent, 'href: ', $index.RelativePath -join '' } else { "" } 
        $expanded = $indent + 'expanded: true'
        $items = $indent + 'items: '
        
        if (([array]$children).Length -gt 0) {
            $contents = @(
                ($name, $href, $expanded, $items | Where-Object { $_.Length -gt 0 }) -join [Environment]::NewLine
            )
            
            $indent = '  ' * ($depth + 1)
            $startobject = ('  ' * ($depth)) + '- '
    
            $contents += $children `
                | ForEach-Object {
                    $name = $startobject + 'name: ' + $_.Title
                    $uid = $indent + 'uid: ' + $_.UID
                
                    return $name, $uid -join [Environment]::NewLine
                }
        } else {
            $contents = @(
                ($name, $uid | Where-Object { $_.Length -gt 0 }) -join [Environment]::NewLine
            )
        }
        $contents += '# Add more to the list. Be careful to preserve spaces and hyphen format.'
                        
        return $contents
    }
}

function Format-Index-Yaml {
    param (
        $object
    )


    foreach ($item in $object) {
        $depth = $item.Name.Split('/').Length
        $index = $item.Group | Where-Object { $_.FileName -match "index.*" } | Select-Object -First 1
        $children = $item.Group | Where-Object { -Not ($_.FileName -match "index.*") }
        $indent = '  ' * $depth
        $startobject = ('  ' * ($depth - 1)) + '- '
        
		$uid = if ($index) { $index.UID } else { $item.Name.Split('/') | Select-Object -Last 1 }
        
        if (([array]$children).Length -gt 0) {
            
            $indent = ' ' * ($depth + 1)
            $startobject = ('' * ($depth)) + '- '
    
            $IndexFilecontent = $children `
                | ForEach-Object {

                    $uidVal =  $_.UID
                    IF([string]::IsNullOrEmpty($uidVal))
                    {
                        $uid = ''
                    }
                    else
                    {
                        $uid =  $startobject + 'uid: ' + $_.UID 
                    }
                    
                    $nameVal = $_.Title
                    IF([string]::IsNullOrEmpty($nameVal))
                    {
                        $name = ''
                    }
                    else
                    {
                        $name = $indent + 'name: ' + $_.Title 
                    }

                    $taglineVal = $_.tagline
                    IF([string]::IsNullOrEmpty($taglineVal))
                    {
                        $tagline = ''
                    }
                    else
                    {
                        $tagline = $indent + 'tagline: ' + $_.tagline
                    }

                    ### Image properties
                    $imageSrcVal = $_.imageSrc
                    IF([string]::IsNullOrEmpty($imageSrcVal))
                    {
                        $imageSrc = ''
                    }
                    else
                    {
                        $imageSrc = $indent + '  src: ' + $_.imageSrc 
                    }

                    $imageAltVal = $_.imageAlt
                    IF([string]::IsNullOrEmpty($imageAltVal))
                    {
                        $imageAlt = ''
                    }
                    else
                    {
                        $imageAlt = $indent + '  alt: ' + $_.imageAlt
                    }

                    IF([string]::IsNullOrEmpty($imageAltVal) -and [string]::IsNullOrEmpty($imageSrcVal))
                    {
                        $image = ''
                    }
                    else
                    {
                        $image = $indent + 'image:' 
                    }

                    ### Location properties
                    
                    $displayVal = $_.display
                    IF([string]::IsNullOrEmpty($displayVal))
                    {
                        $display = ''
                    }
                    else
                    {
                        $display = $indent + '  display: ' + $_.display 
                    }


                    $latVal = $_.lat
                    IF([string]::IsNullOrEmpty($latVal))
                    {
                        $lat = ''
                    }
                    else
                    {
                        $lat = $indent + '  lat: ' + $_.lat 
                    }

                    $longVal = $_.long
                    IF([string]::IsNullOrEmpty($longVal))
                    {
                        $long = ''
                    }
                    else
                    {
                        $long = $indent + '  long: ' + $_.long 
                    }
                    
                    IF([string]::IsNullOrEmpty($displayVal) -and [string]::IsNullOrEmpty($latVal) -and [string]::IsNullOrEmpty($longVal))
                    {
                        $location = $null
                    }
                    else
                    {
                        $location = $indent + 'location: ' 
                    }

                    #$twitterval = $_.twitter
                    #IF([string]::IsNullOrEmpty($twitterval))
                    #{
                    #    $twitter = ''
                    #}
                    #else
                    #{
                    #    $twitter = $indent + 'twitter: '  + $_.twitter.Replace('https://twitter.com/', '')
                    #}
                    return ($uid , $name, $tagline, $image, $imageSrc, $imageAlt, $location, $display, $lat, $long | Where-Object { $_.Length -gt 0 } )-join [Environment]::NewLine
                }
        } else {
            Write-Host "No children found"
        }

        return $IndexFilecontent
    }
}

function Format-Markdown {
    param (
        $object
    )

    $object.

    $heading = '#' * $object.RelativePath.Split('/').Length
    return $heading + " [" + $object.Title + "](" + $object.RelativePath + ")"
}

# Set location to directory path
$directory = [System.IO.Path]::GetFullPath(($directory))
$opc_path = [System.IO.Path]::GetFullPath((Join-Path $directory '.openpublishing.publish.config.json'))
Write-Verbose "Working directory is $opc_path"

# Read .openpublishing.publish.config.json (opconfig)
# Look at opconfig's "docsets_to_publish" array. Each item's "build_source_folder" tells us where a docfx.json, toc.md/yml and content is located.
$opc_json = Get-Content -Raw $opc_path | Out-String | ConvertFrom-Json
$source_folders = $opc_json.docsets_to_publish.build_source_folder

$indexTitle = ''

# Read the docfx.json file's "build.content" array. This tells us the glob patterns to use to locate content, and which content to exclude.
foreach ($source_folder in $source_folders) {
    Write-Verbose "Finding docfx.json in source folder: $source_folder"
    $docfx_dir = [System.IO.Path]::GetFullPath((Join-Path $directory $source_folder))
    $docfx_path = [System.IO.Path]::GetFullPath((Join-Path $docfx_dir 'docfx.json'))
    $toc_path = [System.IO.Path]::GetFullPath((Join-Path $docfx_dir 'toc.yml'))
    $index_path = [System.IO.Path]::GetFullPath((Join-Path $docfx_dir 'index.yml'))
    $map_path = [System.IO.Path]::GetFullPath((Join-Path $docfx_dir 'map.yml'))

    Write-Verbose "Found docfx json: $docfx_path"

    # Use the globs to locate the files on disk, and build the TOC structure, serializing to md or yml.
    # TOC should go in top-level output folder from 'docsets_to_publish' array, it seems.
    $docfx_json = Get-Content  -Raw $docfx_path | Out-String | ConvertFrom-Json
    $includes = $docfx_json.build.content.files
    $excludes = $docfx_json.build.content.exclude
    $excludes = "**/toc.*", "**/map.*", "**/tweets.*"  # Exclude TOC, map and tweets files.


    #using @' '@  to avoid new line formatting notation 
    $content = @'
metadata:
  name: advocates_toc
items:
'@  
    $IndexFilecontent = @' 
### YamlMime:ProfileList
title: Microsoft Regional Directors
description: 
  Trusted advisors to the developer and IT professional audiences and Microsoft.
focalImage:
  src: ./media/RD-header-image.png
  alt: ""
metadata:
  title: Microsoft Regional Directors
  description: Trusted advisors to the developer and IT professional audiences and Microsoft.
  hide_bc: true
bannerLinks:
- text: About
  url: ./about/index.md
- text: Code of Conduct
  url: ./CodeOfConduct/index.md
filterText: Regional Directors
profiles:
'@

 $MapFilecontent = @' 
### YamlMime:ProfileList
title: Microsoft Regional Directors
description: 
  Trusted advisors to the developer and IT professional audiences and Microsoft.
focalImage:
  src: ./media/RD-header-image.png
  alt: ""
metadata:
  title: Microsoft Regional Directors
  description: Trusted advisors to the developer and IT professional audiences and Microsoft.
  hide_bc: true
mode: map
bannerLinks:
- text: Map View
  url: ./map.yml
- text: About
  url: ./about/index.md
- text: Code of Conduct
  url: ./CodeOfConduct/index.md
filterText: Regional Directors
profiles:
'@

    $objects = Get-ChildItem -Path $docfx_dir -Recurse -File  `
        | Where-Object { (-Not (Check-GlobMatch -patterns $excludes -matchpath ( Remove-RootPath -rootpath $docfx_dir -fullpath $_.FullName ))) -and (Check-GlobMatch -patterns $includes -matchpath ( Remove-RootPath -rootpath $docfx_dir -fullpath $_.FullName )) } `
        | Sort-Object FullName `
        | ForEach-Object { Get-DocumentMetadata -file $_ -relativepath ( Remove-RootPath -rootpath $docfx_dir -fullpath $_.FullName ) } `
        | Group-Object { Remove-RootPath -rootpath $docfx_dir -fullpath $_.Parent } `
        | Sort-Object Name `
        
    # writing to TOC file    
    ForEach-Object -Begin { return $content } -Process { Format-Yaml -object $objects } `
        | Out-File -filepath $toc_path

    # writing to Index file 
    ForEach-Object -Begin { return $IndexFilecontent } -Process { Format-Index-Yaml -object $objects } `
        | Out-File -filepath $index_path 

        # writing to map file 
    # ForEach-Object -Begin { return $MapFilecontent } -Process { Format-Index-Yaml -object $objects } `
    #     | Out-File -filepath $map_path


    Write-Verbose "Generated table of contents at $toc_path"
    Write-Verbose "Generated Index file at $index_path"
    Write-Verbose "Generated map file at $map_path"
}