<#
.SYNOPSIS
    Exportiert Jira-Daten fuer pathOS (O2CBS Projekt)
.DESCRIPTION
    Zieht Boards, Sprints, Backlog-Items und Team-Zuordnungen.
    Kompatibel mit PowerShell 5.1.
.USAGE
    powershell -ExecutionPolicy Bypass -File ".\project-audit\scripts\jira-export.ps1"
#>

$JiraUrl = "https://arija.jaas.service.deutschebahn.com"
$ProjectKey = "O2CBS"
$ApiBase = "$JiraUrl/rest"
$OutputDir = "project-audit\data\jira-export"

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

Write-Host "============================================================"
Write-Host "  pathOS Jira Export - Projekt $ProjectKey"
Write-Host "============================================================"
Write-Host ""

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

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

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

# 1. Projekt-Info
Write-Host ">> Projekt-Info..." -ForegroundColor Yellow
$Project = Invoke-JiraApi "$ApiBase/api/2/project/$ProjectKey"
if ($null -eq $Project) { Write-Host "Verbindung fehlgeschlagen. Token pruefen." -ForegroundColor Red; exit 1 }
Write-Host "  Projekt: $($Project.name) ($($Project.key))" -ForegroundColor Green

# 2. Boards finden
Write-Host ">> Boards suchen..." -ForegroundColor Yellow
$Boards = Invoke-JiraApi "$ApiBase/agile/1.0/board?projectKeyOrId=$ProjectKey&maxResults=50"
if ($Boards -and $Boards.values) {
    Write-Host "  $($Boards.values.Count) Boards gefunden" -ForegroundColor Green
    $Boards.values | ForEach-Object { Write-Host "    - $($_.name) (ID: $($_.id), Typ: $($_.type))" }
    $Boards | ConvertTo-Json -Depth 5 | Out-File "$OutputDir\boards.json" -Encoding UTF8
}

# 3. Aktuelle Sprints pro Board
Write-Host ">> Sprints laden..." -ForegroundColor Yellow
$AllSprints = @()
if ($Boards -and $Boards.values) {
    foreach ($Board in $Boards.values) {
        $Sprints = Invoke-JiraApi "$ApiBase/agile/1.0/board/$($Board.id)/sprint?state=active,closed&maxResults=10"
        if ($Sprints -and $Sprints.values) {
            foreach ($S in $Sprints.values) {
                $S | Add-Member -NotePropertyName "boardName" -NotePropertyValue $Board.name -Force
                $S | Add-Member -NotePropertyName "boardId" -NotePropertyValue $Board.id -Force
                $AllSprints += $S
            }
        }
    }
}
Write-Host "  $($AllSprints.Count) Sprints gefunden" -ForegroundColor Green
$AllSprints | ConvertTo-Json -Depth 5 | Out-File "$OutputDir\sprints.json" -Encoding UTF8

# 4. Backlog-Items mit Team-Labels (JQL)
Write-Host ">> Backlog-Items laden (letzte 2 PIs)..." -ForegroundColor Yellow
$Jql = "project = $ProjectKey AND updated >= -90d ORDER BY updated DESC"
$StartAt = 0
$AllIssues = @()
do {
    $SearchUri = "$ApiBase/api/2/search?jql=$([Uri]::EscapeDataString($Jql))&startAt=$StartAt&maxResults=100&fields=summary,status,issuetype,assignee,labels,components,fixVersions,priority,created,updated,customfield_10100"
    $Result = Invoke-JiraApi $SearchUri
    if ($null -eq $Result) { break }
    $AllIssues += $Result.issues
    $StartAt += 100
    Write-Host "  $($AllIssues.Count) / $($Result.total) Issues geladen..."
} while ($AllIssues.Count -lt $Result.total -and $AllIssues.Count -lt 1000)

Write-Host "  $($AllIssues.Count) Issues geladen" -ForegroundColor Green
$AllIssues | ConvertTo-Json -Depth 10 | Out-File "$OutputDir\issues.json" -Encoding UTF8

# 5. Komponenten (= Teams?)
Write-Host ">> Komponenten laden..." -ForegroundColor Yellow
$Components = Invoke-JiraApi "$ApiBase/api/2/project/$ProjectKey/components"
if ($Components) {
    Write-Host "  $($Components.Count) Komponenten" -ForegroundColor Green
    $Components | ForEach-Object { Write-Host "    - $($_.name) (Lead: $(if ($_.lead) { $_.lead.displayName } else { '-' }))" }
    $Components | ConvertTo-Json -Depth 5 | Out-File "$OutputDir\components.json" -Encoding UTF8
}

# 6. Versionen (Releases)
Write-Host ">> Versionen laden..." -ForegroundColor Yellow
$Versions = Invoke-JiraApi "$ApiBase/api/2/project/$ProjectKey/versions"
if ($Versions) {
    $RecentVersions = $Versions | Where-Object { $_.released -eq $true -or $_.archived -eq $false } | Sort-Object -Property releaseDate -Descending | Select-Object -First 20
    Write-Host "  $($Versions.Count) Versionen ($($RecentVersions.Count) aktuelle)" -ForegroundColor Green
    $Versions | ConvertTo-Json -Depth 5 | Out-File "$OutputDir\versions.json" -Encoding UTF8
}

# 7. Analyse: Issues nach Team/Komponente
Write-Host ""
Write-Host ">> Analyse..." -ForegroundColor Yellow

$ByType = $AllIssues | Group-Object { $_.fields.issuetype.name }
$ByStatus = $AllIssues | Group-Object { $_.fields.status.name }
$ByComponent = @{}
foreach ($Issue in $AllIssues) {
    if ($Issue.fields.components) {
        foreach ($Comp in $Issue.fields.components) {
            $ByComponent[$Comp.name] = ($ByComponent[$Comp.name]) + 1
        }
    }
}
$ByLabel = @{}
foreach ($Issue in $AllIssues) {
    if ($Issue.fields.labels) {
        foreach ($Label in $Issue.fields.labels) {
            $ByLabel[$Label] = ($ByLabel[$Label]) + 1
        }
    }
}

# Ergebnis-Markdown
$Md = @()
$Md += "# Jira-Analyse pathOS ($ProjectKey)"
$Md += ""
$Md += "> Exportiert: $(Get-Date -Format 'yyyy-MM-dd HH:mm')"
$Md += "> Issues (letzte 90 Tage): $($AllIssues.Count)"
$Md += ""
$Md += "## Issues nach Typ"
foreach ($G in ($ByType | Sort-Object Count -Descending)) { $Md += "- $($G.Name): $($G.Count)" }
$Md += ""
$Md += "## Issues nach Status"
foreach ($G in ($ByStatus | Sort-Object Count -Descending)) { $Md += "- $($G.Name): $($G.Count)" }
$Md += ""
$Md += "## Issues nach Komponente (Team)"
foreach ($E in ($ByComponent.GetEnumerator() | Sort-Object Value -Descending)) { $Md += "- $($E.Key): $($E.Value)" }
$Md += ""
$Md += "## Issues nach Label"
foreach ($E in ($ByLabel.GetEnumerator() | Sort-Object Value -Descending | Select-Object -First 30)) { $Md += "- $($E.Key): $($E.Value)" }
$Md += ""
$Md += "## Boards"
if ($Boards -and $Boards.values) { foreach ($B in $Boards.values) { $Md += "- $($B.name) (ID: $($B.id), Typ: $($B.type))" } }
$Md += ""
$Md += "## Aktuelle Sprints"
foreach ($S in ($AllSprints | Sort-Object startDate -Descending | Select-Object -First 10)) {
    $Md += "- $($S.name) | Board: $($S.boardName) | Status: $($S.state) | $($S.startDate) - $($S.endDate)"
}
$Md += ""
$Md += "## Letzte Releases"
if ($RecentVersions) { foreach ($V in $RecentVersions) { $Md += "- $($V.name) | Released: $($V.released) | Datum: $($V.releaseDate)" } }

$Md -join "`n" | Out-File "$OutputDir\jira-analyse.md" -Encoding UTF8

# CSV fuer Issues
$CsvData = $AllIssues | ForEach-Object {
    $Comps = if ($_.fields.components) { ($_.fields.components | ForEach-Object { $_.name }) -join ", " } else { "" }
    $Labels = if ($_.fields.labels) { $_.fields.labels -join ", " } else { "" }
    $Fix = if ($_.fields.fixVersions) { ($_.fields.fixVersions | ForEach-Object { $_.name }) -join ", " } else { "" }
    [PSCustomObject]@{
        Key = $_.key
        Typ = $_.fields.issuetype.name
        Status = $_.fields.status.name
        Prioritaet = if ($_.fields.priority) { $_.fields.priority.name } else { "" }
        Zusammenfassung = $_.fields.summary
        Komponenten = $Comps
        Labels = $Labels
        FixVersion = $Fix
        Assignee = if ($_.fields.assignee) { $_.fields.assignee.displayName } else { "" }
        Erstellt = $_.fields.created
        Aktualisiert = $_.fields.updated
    }
}
$CsvData | Export-Csv "$OutputDir\issues.csv" -Delimiter ";" -Encoding UTF8 -NoTypeInformation

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