<#
.SYNOPSIS
    Exportiert Jira-Daten aller pathOS Team-Boards
#>

$JiraUrl = "https://arija.jaas.service.deutschebahn.com"
$ApiBase = "$JiraUrl/rest"
$OutputDir = "project-audit\data\jira-teams"
$TeamProjects = @(
    @{ key = "O2C404"; name = "Team 404 (Portal)" }
    @{ key = "O2CCIB"; name = "Team CIB (Prozesse/Backend)" }
    @{ key = "O2CZERO"; name = "Team Zero (TAF/TAP)" }
    @{ key = "O2COS"; name = "OPs Squad (Infrastruktur)" }
    @{ key = "O2CSYS"; name = "STeam/System (ehem.)" }
    @{ key = "O2CQST"; name = "QA/Test" }
    @{ key = "O2CDEVOPS"; name = "DevOps" }
)

[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12

Write-Host "============================================================"
Write-Host "  pathOS Team-Boards Jira Export"
Write-Host "============================================================"

$Token = Read-Host "Jira PAT"
$Headers = @{ "Authorization" = "Bearer $Token"; "Content-Type" = "application/json" }

New-Item -ItemType Directory -Path $OutputDir -Force | Out-Null

function Invoke-JiraApi($Uri) {
    try {
        $R = Invoke-WebRequest -Uri $Uri -Headers $Headers -UseBasicParsing -ErrorAction Stop
        return ($R.Content | ConvertFrom-Json)
    } catch {
        Write-Host "    FEHLER: $($_.Exception.Message)" -ForegroundColor Red
        return $null
    }
}

$Summary = @()

foreach ($Team in $TeamProjects) {
    $Key = $Team.key
    $Name = $Team.name
    Write-Host ""
    Write-Host ">> $Name ($Key)" -ForegroundColor Yellow

    # Projekt-Info
    $Proj = Invoke-JiraApi "$ApiBase/api/2/project/$Key"
    if ($null -eq $Proj) { Write-Host "  Nicht gefunden oder kein Zugriff" -ForegroundColor Red; continue }
    Write-Host "  Projekt: $($Proj.name)"

    # Issues (letzte 90 Tage)
    $Jql = "project = $Key AND updated >= -90d ORDER BY updated DESC"
    $Issues = @()
    $Start = 0
    do {
        $Uri = "$ApiBase/api/2/search?jql=$([Uri]::EscapeDataString($Jql))&startAt=$Start&maxResults=100&fields=summary,status,issuetype,assignee,labels,components,fixVersions,priority,created,updated,sprint"
        $Result = Invoke-JiraApi $Uri
        if ($null -eq $Result) { break }
        $Issues += $Result.issues
        $Start += 100
    } while ($Issues.Count -lt $Result.total -and $Issues.Count -lt 500)
    Write-Host "  $($Issues.Count) Issues (90 Tage)"

    # Analyse
    $ByType = $Issues | Group-Object { $_.fields.issuetype.name }
    $ByStatus = $Issues | Group-Object { $_.fields.status.name }

    $Done = ($Issues | Where-Object { $_.fields.status.name -eq "Fertig" -or $_.fields.status.name -match "Done|Closed|Resolved" }).Count
    $InProgress = ($Issues | Where-Object { $_.fields.status.name -match "Implementation|In Bearbeitung|In Progress|Review|Validierung" }).Count
    $Open = $Issues.Count - $Done - $InProgress

    $TeamInfo = [PSCustomObject]@{
        Team = $Name
        Key = $Key
        Total = $Issues.Count
        Done = $Done
        InProgress = $InProgress
        Open = $Open
        Features = ($ByType | Where-Object { $_.Name -eq "Feature" }).Count
        Enabler = ($ByType | Where-Object { $_.Name -eq "Enabler" }).Count
        Bugs = ($ByType | Where-Object { $_.Name -match "Bug|Fehler" }).Count
        Tasks = ($ByType | Where-Object { $_.Name -eq "Aufgabe" }).Count
    }
    $Summary += $TeamInfo

    Write-Host "  Fertig: $Done | In Arbeit: $InProgress | Offen: $Open"

    # Issues als CSV speichern
    $CsvData = $Issues | ForEach-Object {
        [PSCustomObject]@{
            Key = $_.key
            Typ = $_.fields.issuetype.name
            Status = $_.fields.status.name
            Prioritaet = if ($_.fields.priority) { $_.fields.priority.name } else { "" }
            Zusammenfassung = $_.fields.summary
            Assignee = if ($_.fields.assignee) { $_.fields.assignee.displayName } else { "" }
            Labels = if ($_.fields.labels) { $_.fields.labels -join ", " } else { "" }
            Erstellt = $_.fields.created
            Aktualisiert = $_.fields.updated
        }
    }
    $CsvData | Export-Csv "$OutputDir\$Key-issues.csv" -Delimiter ";" -Encoding UTF8 -NoTypeInformation
    $Issues | ConvertTo-Json -Depth 10 | Out-File "$OutputDir\$Key-issues.json" -Encoding UTF8
}

# Zusammenfassung
Write-Host ""
Write-Host ">> Zusammenfassung" -ForegroundColor Yellow
$Summary | Format-Table -AutoSize

$Md = @()
$Md += "# Jira Team-Boards Analyse pathOS"
$Md += ""
$Md += "> Exportiert: $(Get-Date -Format 'yyyy-MM-dd HH:mm')"
$Md += ""
$Md += "| Team | Key | Issues (90d) | Fertig | In Arbeit | Offen | Features | Enabler | Bugs | Tasks |"
$Md += "|------|-----|-------------|--------|-----------|-------|----------|---------|------|-------|"
foreach ($T in $Summary) {
    $Md += "| $($T.Team) | $($T.Key) | $($T.Total) | $($T.Done) | $($T.InProgress) | $($T.Open) | $($T.Features) | $($T.Enabler) | $($T.Bugs) | $($T.Tasks) |"
}
$Md += ""

# Assignee-Analyse (wer arbeitet wo)
$Md += "## Assignees pro Team"
foreach ($Team in $TeamProjects) {
    $Key = $Team.key
    $JsonPath = "$OutputDir\$Key-issues.json"
    if (Test-Path $JsonPath) {
        $Issues = Get-Content $JsonPath -Raw | ConvertFrom-Json
        $Assignees = $Issues | Where-Object { $_.fields.assignee } | Group-Object { $_.fields.assignee.displayName } | Sort-Object Count -Descending
        if ($Assignees.Count -gt 0) {
            $Md += ""
            $Md += "### $($Team.name) ($Key)"
            foreach ($A in $Assignees) {
                $Md += "- $($A.Name): $($A.Count) Issues"
            }
        }
    }
}

$Md -join "`n" | Out-File "$OutputDir\team-summary.md" -Encoding UTF8
$Summary | Export-Csv "$OutputDir\team-summary.csv" -Delimiter ";" -Encoding UTF8 -NoTypeInformation

Write-Host ""
Write-Host "============================================================" -ForegroundColor Green
Write-Host "  FERTIG! Ergebnisse in $OutputDir" -ForegroundColor Green
Write-Host "============================================================" -ForegroundColor Green