# leaga_skills.ps1 - expune folderul canonic de agent-skills al ROA catre agenti, fara sa dubleze fisiere.
# Creeaza cate un link de director (symlink) pentru fiecare skill din sursa in folderul global
# %USERPROFILE%\.claude\skills. Atat Claude Code cat si opencode citesc %USERPROFILE%\.claude\skills\<nume>\SKILL.md,
# deci un singur set de link-uri serveste ambele gazde.
# Link-urile de director cer Developer Mode pe Windows sau o consola de administrator (mklink /D).
# Utilizare:
#   powershell -File COMUN\utile\leaga_skills.ps1              # leaga toate skill-urile
#   powershell -File COMUN\utile\leaga_skills.ps1 -DryRun      # doar listeaza ce ar face
#   powershell -File COMUN\utile\leaga_skills.ps1 -Force       # inlocuieste si link-urile care arata in alta parte
param(
    [string]$Source = (Join-Path $PSScriptRoot '..\skills'),
    [string]$Target = (Join-Path $env:USERPROFILE '.claude\skills'),
    [switch]$DryRun,
    [switch]$Force
)

$ErrorActionPreference = 'Stop'

function Normalize-Cale {
    param([string]$Cale)
    if (-not $Cale) { return '' }
    ([System.IO.Path]::GetFullPath($Cale)).TrimEnd('\')
}

function Ia-TintaLink {
    # PowerShell 5.1 da Target ca string, PowerShell 7 ca lista de string-uri
    param($Item)
    $t = $Item.Target
    if ($t -is [array]) { return ($t | Select-Object -First 1) }
    return $t
}

function Sterge-Link {
    # sterge doar link-ul (reparse point), niciodata continutul din tinta
    param([string]$Link)
    try {
        if (Test-Path -LiteralPath $Link -PathType Container) {
            [System.IO.Directory]::Delete($Link, $false)
        } else {
            Remove-Item -LiteralPath $Link -Force
        }
        return $true
    } catch {
        return $false
    }
}

function Creeaza-Link {
    # intoarce $true la succes; $script:EroareLink primeste mesajul la esec
    param([string]$Link, [string]$Dir)
    $script:EroareLink = ''
    try {
        New-Item -ItemType SymbolicLink -Path $Link -Target $Dir -ErrorAction Stop | Out-Null
        return $true
    } catch {
        $script:EroareLink = $_.Exception.Message
    }
    $r = & cmd /c mklink /D "$Link" "$Dir" 2>&1
    if ($LASTEXITCODE -eq 0) { return $true }
    $script:EroareLink = (($r | ForEach-Object { [string]$_ }) -join ' ').Trim()
    return $false
}

if (-not (Test-Path -LiteralPath $Source -PathType Container)) {
    Write-Output ('leaga_skills: nu gasesc folderul sursa ' + $Source + ' - nimic de facut.')
    exit 0
}
$skilluri = @(Get-ChildItem -LiteralPath $Source -Directory | Sort-Object Name)
if ($skilluri.Count -eq 0) {
    Write-Output ('leaga_skills: ' + $Source + ' nu contine niciun subfolder de skill - nimic de facut.')
    exit 0
}

if (-not (Test-Path -LiteralPath $Target -PathType Container)) {
    if ($DryRun) {
        Write-Output ('DryRun - as crea folderul tinta ' + $Target)
    } else {
        New-Item -ItemType Directory -Force -Path $Target | Out-Null
        Write-Output ('creat folderul tinta ' + $Target)
    }
}

$creat = 0; $ok = 0; $atentionat = 0; $anuntPrivilegii = $false

foreach ($s in $skilluri) {
    $dir = $s.FullName
    $link = Join-Path $Target $s.Name
    $item = Get-Item -LiteralPath $link -Force -ErrorAction SilentlyContinue

    if (-not $item) {
        if ($DryRun) {
            Write-Output ('  ar crea    ' + $s.Name + ' -> ' + $dir)
            $creat++
            continue
        }
        if (Creeaza-Link -Link $link -Dir $dir) {
            Write-Output ('  creat      ' + $s.Name + ' -> ' + $dir)
            $creat++
        } else {
            Write-Output ('  EROARE     ' + $s.Name + ' - ' + $script:EroareLink)
            $atentionat++
            if (-not $anuntPrivilegii) {
                Write-Output '  Link-urile de director cer Windows Developer Mode (Settings > Privacy & security > For developers)'
                Write-Output '  sau o consola PowerShell pornita ca administrator. Alternativ, copiaza manual folderele de skill.'
                $anuntPrivilegii = $true
            }
        }
        continue
    }

    if ($item.LinkType) {
        $actual = Normalize-Cale (Ia-TintaLink $item)
        if ($actual -eq (Normalize-Cale $dir)) {
            Write-Output ('  ok         ' + $s.Name + ' (link deja corect)')
            $ok++
            continue
        }
        Write-Output ('Atentie: ' + $link + ' arata catre ' + $actual + ', nu catre ' + $dir)
        if (-not $Force) {
            Write-Output ('  sarit      ' + $s.Name + ' - ruleaza cu -Force ca sa il inlocuiesc.')
            $atentionat++
            continue
        }
        if ($DryRun) {
            Write-Output ('  ar lega    ' + $s.Name + ' (inlocuieste link-ul gresit) -> ' + $dir)
            $creat++
            continue
        }
        if (-not (Sterge-Link -Link $link)) {
            Write-Output ('  EROARE     ' + $s.Name + ' - nu pot sterge link-ul vechi.')
            $atentionat++
            continue
        }
        if (Creeaza-Link -Link $link -Dir $dir) {
            Write-Output ('  refacut    ' + $s.Name + ' -> ' + $dir)
            $creat++
        } else {
            Write-Output ('  EROARE     ' + $s.Name + ' - ' + $script:EroareLink)
            $atentionat++
            if (-not $anuntPrivilegii) {
                Write-Output '  Link-urile de director cer Windows Developer Mode (Settings > Privacy & security > For developers)'
                Write-Output '  sau o consola PowerShell pornita ca administrator.'
                $anuntPrivilegii = $true
            }
        }
        continue
    }

    # nume ocupat de un director/fisier real - nu il atingem niciodata
    $tip = 'fisier'
    if ($item.PSIsContainer) { $tip = 'director real' }
    Write-Output ('  sarit      ' + $s.Name + ' - ' + $tip + ' exista deja la ' + $link + '; nu il sterg si nu il suprascriu.')
    $atentionat++
}

Write-Output ''
if ($DryRun) {
    Write-Output ('leaga_skills (DryRun): ' + $creat + ' de creat, ' + $ok + ' ok, ' + $atentionat + ' atentionari')
} else {
    Write-Output ('leaga_skills: ' + $creat + ' create, ' + $ok + ' ok, ' + $atentionat + ' atentionari')
}
exit 0