BridgeWatcher

1.0.101

Public/Get-BridgePreviousStatus.ps1

<#
.SYNOPSIS
    Reads the previously saved bridge status from a JSON file.

.DESCRIPTION
    Reads the state file generated by Export-BridgeStatusJson and returns the records as PSCustomObjects.
    Filters out any records that do not match the expected schema.

.PARAMETER InputFile
    The path to the JSON file containing the previous status.

.PARAMETER JsonDepth
    The maximum depth to parse the JSON file. Defaults to 10.

.PARAMETER Configuration
    The configuration object containing logging settings.

.EXAMPLE
    Get-BridgePreviousStatus -InputFile 'C:\temp\status.json' -Configuration $Config

.OUTPUTS
    [PSCustomObject[]]
#>
function Get-BridgePreviousStatus {
    [CmdletBinding()]
    [OutputType([object[]])]
    param (
        [Parameter(Mandatory)][ValidateNotNullOrEmpty()][string]$InputFile,
        [Parameter()][ValidateRange(1, 20)][int]$JsonDepth = 10,
        [Parameter(Mandatory)][ValidateNotNull()][PSCustomObject]$Configuration
    )
    begin {
    }
    process {
        if (-not (Test-Path $InputFile)) {
            $writeBridgeLogSplat = @{
                Stage   = $Configuration.LoggingConfig.ErrorStage
                Message = "Το αρχείο $($InputFile) δεν βρέθηκε – επιστρέφεται κενό array."
                Level   = $Configuration.LoggingConfig.WarningLevel
            }
            Write-BridgeLog @writeBridgeLogSplat -Configuration $Configuration
            return @()
        }        try {
            $getContentSplat = @{
                Path     = $InputFile
                Raw      = $true
                Encoding = 'utf8BOM'
            }
            $convertFromJsonSplat = @{
                Depth = $JsonDepth
            }
            $results = Get-Content @getContentSplat | ConvertFrom-Json @convertFromJsonSplat

            # Φιλτράρισμα άκυρων εγγραφών (π.χ. αν αποθηκεύτηκε BridgeResult αντί για Array)
            $validResults = @($results) | Where-Object {
                $null -ne $_ -and $_.psobject.properties.match('GefyraName').Count -gt 0
            }

            if ($validResults.Count -eq 0) {
                return @()
            }

            # Backfill ImageHash for state files saved before this property existed
            foreach ($item in $validResults) {
                if (-not ($item.PSObject.Properties.Name -contains 'ImageHash')) {
                    $item | Add-Member -MemberType NoteProperty -Name 'ImageHash' -Value $null
                }
            }
            return $validResults
        } catch {
            $writeBridgeLogSplat = @{
                Stage   = $Configuration.LoggingConfig.ErrorStage
                Message = "Σφάλμα κατά την ανάλυση JSON: $($_.Exception.Message)"
                Level   = $Configuration.LoggingConfig.WarningLevel
            }
            Write-BridgeLog @writeBridgeLogSplat -Configuration $Configuration
            $PSCmdlet.ThrowTerminatingError(
                [System.Management.Automation.ErrorRecord]::new(
                    ([System.Exception]::new("Σφάλμα κατά την ανάλυση JSON: $($_.Exception.Message)", $_.Exception)),
                    'BridgeJsonParseError',
                    [System.Management.Automation.ErrorCategory]::InvalidData,
                    $InputFile
                )
            )
        }
    }
}