PowerShell database class

AddItem.ps1

[JhaContentDB]::new($dbPath).Load().Add($item).Save().Close()

JhaContentDB.ps1

Class JhaContentDB {
    [string]$Path
    [JhaContentDBItem[]]$Items
    [boolean]$Dirty
    [string]$LockPath
    JhaContentDB([string]$Path) {
        $this.Path = $Path
        $this.LockPath = (GetLockPath Play JhaContentDB)
    }
    [JhaContentDB]Load() {
        if ($this.IsLocked()) {
            Write-Error "DB Locked: $($this.Path)" -ErrorAction:Stop
        }
        $this.Lock()
        if (Test-Path $this.Path) {
            $this.Items = [JhaContentDBItem[]](Import-Csv $this.Path)
        }
        Return $this
    }
    [JhaContentDB]Add([JhaContentDBItem]$Item) {
        $this.Items += $Item
        $this.Dirty = $true
        Return $this
    }
    [JhaContentDB]Save() {
        if ($this.Dirty) {
            Write-Verbose "Saving DB to disk"
            $this | Select-Object -ExpandProperty Items | Export-Csv $this.Path
        }
        Return $this
    }
    Close() {
        $this.Save()
        $this.Unlock()
    }
    hidden Lock() {
        Set-Content -Path $this.LockPath -Value (Get-Date).ToString()
    }
    hidden Unlock() {
        Remove-Item -Path $this.LockPath
    }
    hidden [boolean]IsLocked() {
        Return (Test-Path $this.LockPath)
    }
}