param(
  [string]$ArtifactRoot = "",
  [string]$FixtureRoot = "",
  [string]$Phase8ArtifactRoot = "",
  [string]$Phase9ArtifactRoot = "",
  [string]$Phase10ArtifactRoot = "",
  [string]$Phase11ArtifactRoot = "",
  [int]$MaxEvidenceAgeHours = 96,
  [switch]$FailOnWarn,
  [switch]$FailOnExternalBlocked
)

$ErrorActionPreference = "Stop"

$repoRoot = (Resolve-Path (Join-Path $PSScriptRoot "..")).Path
$timestamp = Get-Date -Format "yyyy-MM-ddTHH-mm-ss-fff"
if ([string]::IsNullOrWhiteSpace($ArtifactRoot)) {
  $ArtifactRoot = Join-Path $repoRoot "project-docs\qa-artifacts\phase12-v2-roadmap-gate"
}
if ([string]::IsNullOrWhiteSpace($FixtureRoot)) {
  $FixtureRoot = Join-Path $repoRoot "project-docs\phase12-v2-roadmap-fixtures"
}
if ([string]::IsNullOrWhiteSpace($Phase8ArtifactRoot)) {
  $Phase8ArtifactRoot = Join-Path $repoRoot "project-docs\qa-artifacts\phase8-pilot-closed-loop"
}
if ([string]::IsNullOrWhiteSpace($Phase9ArtifactRoot)) {
  $Phase9ArtifactRoot = Join-Path $repoRoot "project-docs\qa-artifacts\phase9-business-quality-gate"
}
if ([string]::IsNullOrWhiteSpace($Phase10ArtifactRoot)) {
  $Phase10ArtifactRoot = Join-Path $repoRoot "project-docs\qa-artifacts\phase10-delivery-acceptance"
}
if ([string]::IsNullOrWhiteSpace($Phase11ArtifactRoot)) {
  $Phase11ArtifactRoot = Join-Path $repoRoot "project-docs\qa-artifacts\phase11-scale-ops-gate"
}
foreach ($pathName in @("ArtifactRoot", "FixtureRoot", "Phase8ArtifactRoot", "Phase9ArtifactRoot", "Phase10ArtifactRoot", "Phase11ArtifactRoot")) {
  $value = Get-Variable -Name $pathName -ValueOnly
  if (-not [System.IO.Path]::IsPathRooted($value)) {
    Set-Variable -Name $pathName -Value (Join-Path $repoRoot $value)
  }
}

$artifactDir = Join-Path $ArtifactRoot $timestamp
New-Item -ItemType Directory -Force -Path $artifactDir | Out-Null

$summaryJson = Join-Path $artifactDir "v2-roadmap-gate-summary.json"
$summaryMd = Join-Path $artifactDir "v2-roadmap-gate-summary.md"
$gitStatusPath = Join-Path $artifactDir "git-status.txt"
$evidenceMatrixCsv = Join-Path $artifactDir "phase12-evidence-matrix.csv"
$demandReportCsv = Join-Path $artifactDir "phase12-demand-pool-report.csv"
$firstBatchCsv = Join-Path $artifactDir "phase12-first-batch-report.csv"
$roadmapReportCsv = Join-Path $artifactDir "phase12-roadmap-report.csv"
$riskReportCsv = Join-Path $artifactDir "phase12-risk-and-spike-report.csv"

$checks = New-Object System.Collections.Generic.List[object]
$evidenceMatrix = New-Object System.Collections.Generic.List[object]

function Add-Check {
  param(
    [string]$Key,
    [string]$Label,
    [ValidateSet("pass", "fail", "warn", "skip", "blocked")]
    [string]$Status,
    [string]$Detail,
    [bool]$Required = $true,
    [hashtable]$Meta = @{}
  )

  $checks.Add([ordered]@{
    key = $Key
    label = $Label
    status = $Status
    required = $Required
    detail = $Detail
    meta = $Meta
  }) | Out-Null
}

function Save-Json {
  param([string]$Path, [object]$Value)
  $Value | ConvertTo-Json -Depth 18 | Set-Content -Encoding UTF8 -Path $Path
}

function Read-JsonFile {
  param([string]$Path)
  if (-not (Test-Path -LiteralPath $Path -PathType Leaf)) {
    return $null
  }
  try {
    return Get-Content -LiteralPath $Path -Raw -Encoding UTF8 | ConvertFrom-Json
  } catch {
    return $null
  }
}

function Get-LatestSummaryArtifact {
  param(
    [string]$Root,
    [string]$SummaryFile
  )
  if (-not (Test-Path -LiteralPath $Root -PathType Container)) {
    return $null
  }
  return Get-ChildItem -LiteralPath $Root -Directory |
    Sort-Object LastWriteTime -Descending |
    Where-Object { Test-Path -LiteralPath (Join-Path $_.FullName $SummaryFile) } |
    Select-Object -First 1
}

function Test-CsvColumns {
  param(
    [object[]]$Rows,
    [string[]]$Columns
  )
  if ($Rows.Count -eq 0) {
    return $false
  }
  $names = @($Rows[0].PSObject.Properties.Name)
  foreach ($column in $Columns) {
    if ($names -notcontains $column) {
      return $false
    }
  }
  return $true
}

function Test-RequiredFlag {
  param([string]$Value)
  return @("true", "yes", "1", "required") -contains $Value.ToLowerInvariant()
}

function Get-FailedRequiredCount {
  param([object]$Summary)
  if ($null -eq $Summary -or $null -eq $Summary.totals) {
    return 0
  }
  if ($null -ne $Summary.totals.failed_required) {
    return [int]$Summary.totals.failed_required
  }
  return 0
}

function Add-EvidenceCheck {
  param(
    [string]$Key,
    [string]$Label,
    [string]$Root,
    [string]$SummaryFile,
    [string[]]$AllowedStatuses
  )

  $latest = Get-LatestSummaryArtifact -Root $Root -SummaryFile $SummaryFile
  if ($null -eq $latest) {
    Add-Check -Key $Key -Label $Label -Status "fail" -Detail "No evidence artifact found"
    $evidenceMatrix.Add([pscustomobject][ordered]@{
      key = $Key
      label = $Label
      status = "MISSING"
      failed_required = ""
      age_hours = ""
      artifact_dir = ""
      summary_file = ""
    }) | Out-Null
    return $null
  }

  $summaryPath = Join-Path $latest.FullName $SummaryFile
  $summary = Read-JsonFile -Path $summaryPath
  $status = if ($summary -and $summary.status) { [string]$summary.status } else { "UNKNOWN" }
  $failedRequired = Get-FailedRequiredCount -Summary $summary
  $ageHours = [math]::Round(((Get-Date) - $latest.LastWriteTime).TotalHours, 2)
  $evidenceMatrix.Add([pscustomobject][ordered]@{
    key = $Key
    label = $Label
    status = $status
    failed_required = $failedRequired
    age_hours = $ageHours
    artifact_dir = $latest.FullName
    summary_file = $summaryPath
  }) | Out-Null

  if (($AllowedStatuses -contains $status) -and $failedRequired -eq 0) {
    Add-Check -Key $Key -Label $Label -Status "pass" -Detail "Status=$status, failed_required=$failedRequired, age=${ageHours}h" -Meta @{ artifact_dir = $latest.FullName; summary = $summaryPath }
  } else {
    Add-Check -Key $Key -Label $Label -Status "fail" -Detail "Status=$status, failed_required=$failedRequired" -Meta @{ artifact_dir = $latest.FullName; summary = $summaryPath }
  }
  if ($ageHours -gt $MaxEvidenceAgeHours) {
    Add-Check -Key ($Key + "_freshness") -Label ($Label + " freshness") -Status "warn" -Required $false -Detail "Evidence age ${ageHours}h exceeds ${MaxEvidenceAgeHours}h" -Meta @{ artifact_dir = $latest.FullName }
  }
  return $summary
}

if (-not (Test-Path "$HOME\.Codex\skills\gstack\bin")) {
  Add-Check -Key "gstack" -Label "gstack preflight" -Status "fail" -Detail "gstack is missing"
} else {
  Add-Check -Key "gstack" -Label "gstack preflight" -Status "pass" -Detail "GSTACK_OK"
}

$branch = (git -C $repoRoot rev-parse --abbrev-ref HEAD).Trim()
$commit = (git -C $repoRoot rev-parse HEAD).Trim()
$remoteUrl = (git -C $repoRoot remote get-url origin).Trim()
$gitStatus = git -C $repoRoot status --short
($gitStatus -join [Environment]::NewLine) | Set-Content -Encoding UTF8 -Path $gitStatusPath

if ($remoteUrl -match "192\.168\.3\.90") {
  Add-Check -Key "origin_remote" -Label "origin remote" -Status "pass" -Detail "origin points to 192.168.3.90" -Meta @{ branch = $branch; commit = $commit; remote = $remoteUrl }
} else {
  Add-Check -Key "origin_remote" -Label "origin remote" -Status "fail" -Detail "origin does not point to 192.168.3.90" -Meta @{ branch = $branch; commit = $commit; remote = $remoteUrl }
}

if ($gitStatus) {
  Add-Check -Key "working_tree" -Label "working tree" -Status "warn" -Required $false -Detail "Working tree has uncommitted changes; V2 roadmap gate is advisory" -Meta @{ artifact = $gitStatusPath }
} else {
  Add-Check -Key "working_tree" -Label "working tree" -Status "pass" -Detail "Working tree is clean" -Meta @{ artifact = $gitStatusPath }
}

if (Test-Path -LiteralPath $FixtureRoot -PathType Container) {
  Add-Check -Key "fixture_root" -Label "V2 roadmap fixture root" -Status "pass" -Detail "Fixture root exists" -Meta @{ root = $FixtureRoot }
} else {
  Add-Check -Key "fixture_root" -Label "V2 roadmap fixture root" -Status "fail" -Detail "Fixture root is missing" -Meta @{ root = $FixtureRoot }
}

$requiredFixtureFiles = @(
  "README.md",
  "v2-demand-pool.csv",
  "v2-priority-scorecard.csv",
  "v2-first-batch-backlog.csv",
  "v2-roadmap.csv",
  "v2-scope-decision-register.csv",
  "integration-expansion-plan.csv",
  "technical-spike-register.csv",
  "v2-acceptance-criteria.csv",
  "long-term-roadmap.md"
)
foreach ($file in $requiredFixtureFiles) {
  $path = Join-Path $FixtureRoot $file
  if (Test-Path -LiteralPath $path -PathType Leaf) {
    Add-Check -Key ("fixture_" + ($file -replace '[^a-zA-Z0-9]', '_')) -Label "fixture $file" -Status "pass" -Detail "Fixture exists" -Meta @{ path = $path }
  } else {
    Add-Check -Key ("fixture_" + ($file -replace '[^a-zA-Z0-9]', '_')) -Label "fixture $file" -Status "fail" -Detail "Fixture missing" -Meta @{ path = $path }
  }
}

$demandRows = @(Import-Csv -LiteralPath (Join-Path $FixtureRoot "v2-demand-pool.csv"))
$scoreRows = @(Import-Csv -LiteralPath (Join-Path $FixtureRoot "v2-priority-scorecard.csv"))
$firstBatchRows = @(Import-Csv -LiteralPath (Join-Path $FixtureRoot "v2-first-batch-backlog.csv"))
$roadmapRows = @(Import-Csv -LiteralPath (Join-Path $FixtureRoot "v2-roadmap.csv"))
$decisionRows = @(Import-Csv -LiteralPath (Join-Path $FixtureRoot "v2-scope-decision-register.csv"))
$integrationRows = @(Import-Csv -LiteralPath (Join-Path $FixtureRoot "integration-expansion-plan.csv"))
$spikeRows = @(Import-Csv -LiteralPath (Join-Path $FixtureRoot "technical-spike-register.csv"))
$acceptanceRows = @(Import-Csv -LiteralPath (Join-Path $FixtureRoot "v2-acceptance-criteria.csv"))

$phase8Summary = Add-EvidenceCheck -Key "phase8_closed_loop" -Label "phase8 closed loop" -Root $Phase8ArtifactRoot -SummaryFile "phase8-pilot-closed-loop-summary.json" -AllowedStatuses @("PASS", "PASS_WITH_WEBHOOK_BLOCKED")
$phase9Summary = Add-EvidenceCheck -Key "phase9_business_quality" -Label "phase9 business quality" -Root $Phase9ArtifactRoot -SummaryFile "business-quality-gate-summary.json" -AllowedStatuses @("PASS", "PASS_WITH_WEBHOOK_BLOCKED")
$phase10Summary = Add-EvidenceCheck -Key "phase10_delivery_acceptance" -Label "phase10 delivery acceptance" -Root $Phase10ArtifactRoot -SummaryFile "delivery-acceptance-summary.json" -AllowedStatuses @("PASS", "PASS_WITH_WEBHOOK_BLOCKED")
$phase11Summary = Add-EvidenceCheck -Key "phase11_scale_ops" -Label "phase11 scale ops" -Root $Phase11ArtifactRoot -SummaryFile "scale-ops-gate-summary.json" -AllowedStatuses @("PASS", "PASS_WITH_WEBHOOK_BLOCKED")

$demandColumnsOk = Test-CsvColumns -Rows $demandRows -Columns @("demand_id", "source_phase", "source_evidence", "theme", "description", "value_score", "risk_score", "dependency_score", "cost_score", "priority_score", "decision", "status", "acceptance_criteria", "regression_gate")
$sourcePhases = @($demandRows | Select-Object -ExpandProperty source_phase -Unique)
$requiredSourcePhases = @("phase8", "phase9", "phase10", "phase11")
$missingSourcePhases = @($requiredSourcePhases | Where-Object { $sourcePhases -notcontains $_ })
$badDemandScores = @($demandRows | Where-Object { [int]$_.priority_score -lt 0 -or [int]$_.value_score -lt 1 -or [string]::IsNullOrWhiteSpace($_.source_evidence) })
if ($demandColumnsOk -and $demandRows.Count -ge 10 -and $missingSourcePhases.Count -eq 0 -and $badDemandScores.Count -eq 0) {
  Add-Check -Key "demand_pool" -Label "V2 demand pool" -Status "pass" -Detail "Demands=$($demandRows.Count), phases=$($sourcePhases -join ',')"
} else {
  Add-Check -Key "demand_pool" -Label "V2 demand pool" -Status "fail" -Detail "Demand pool incomplete or missing phase evidence" -Meta @{ missing_source_phases = $missingSourcePhases }
}

$scoreColumnsOk = Test-CsvColumns -Rows $scoreRows -Columns @("demand_id", "value_score", "risk_score", "dependency_score", "cost_score", "base_score", "strategic_boost_score", "priority_score", "priority_band", "rationale")
$scoreIds = @($scoreRows | Select-Object -ExpandProperty demand_id)
$missingScores = @($demandRows | Where-Object { $scoreIds -notcontains $_.demand_id } | Select-Object -ExpandProperty demand_id)
$scorePriorityByDemand = @{}
foreach ($scoreRow in $scoreRows) {
  $scorePriorityByDemand[$scoreRow.demand_id] = [int]$scoreRow.priority_score
}
$demandPriorityMismatch = @($demandRows | Where-Object { $scorePriorityByDemand.ContainsKey($_.demand_id) -and [int]$_.priority_score -ne $scorePriorityByDemand[$_.demand_id] } | Select-Object -ExpandProperty demand_id)
$badScoreMath = @($scoreRows | Where-Object {
  $baseScore = [int]$_.value_score + 10 - [int]$_.risk_score - [int]$_.dependency_score - [int]$_.cost_score
  $declaredBaseScore = [int]$_.base_score
  $strategicBoostScore = [int]$_.strategic_boost_score
  $priorityScore = [int]$_.priority_score
  $baseScore -ne $declaredBaseScore -or $strategicBoostScore -lt 0 -or $strategicBoostScore -gt 3 -or ($baseScore + $strategicBoostScore) -ne $priorityScore
})
if ($scoreColumnsOk -and $missingScores.Count -eq 0 -and $badScoreMath.Count -eq 0 -and $demandPriorityMismatch.Count -eq 0) {
  Add-Check -Key "priority_scorecard" -Label "priority scorecard" -Status "pass" -Detail "Score rows=$($scoreRows.Count), formula=base+strategic_boost"
} else {
  Add-Check -Key "priority_scorecard" -Label "priority scorecard" -Status "fail" -Detail "Priority scorecard incomplete or score math invalid" -Meta @{ missing_scores = $missingScores; bad_score_math = @($badScoreMath | Select-Object -ExpandProperty demand_id); demand_priority_mismatch = $demandPriorityMismatch }
}

$acceptanceIds = @($acceptanceRows | Select-Object -ExpandProperty acceptance_id)
$firstBatchColumnsOk = Test-CsvColumns -Rows $firstBatchRows -Columns @("backlog_id", "demand_id", "epic", "story", "owner", "status", "acceptance_ref", "regression_gate", "ready_for_dev")
$readyFirstBatch = @($firstBatchRows | Where-Object { $_.status -eq "READY" -and (Test-RequiredFlag $_.ready_for_dev) })
$firstBatchMissingAcceptance = @($firstBatchRows | Where-Object { $acceptanceIds -notcontains $_.acceptance_ref })
if ($firstBatchColumnsOk -and $readyFirstBatch.Count -ge 5 -and $firstBatchMissingAcceptance.Count -eq 0) {
  Add-Check -Key "first_batch" -Label "V2 first batch" -Status "pass" -Detail "Ready first batch items=$($readyFirstBatch.Count)"
} else {
  Add-Check -Key "first_batch" -Label "V2 first batch" -Status "fail" -Detail "First batch is not ready or lacks acceptance references"
}

$roadmapColumnsOk = Test-CsvColumns -Rows $roadmapRows -Columns @("roadmap_id", "horizon", "demand_id", "theme", "decision", "status", "target_phase", "entry_criteria", "exit_criteria")
$frozenRows = @($roadmapRows | Where-Object { $_.status -eq "FROZEN" })
$nowRows = @($roadmapRows | Where-Object { $_.horizon -eq "now" })
$missingNowDemand = @($readyFirstBatch | Where-Object { @($nowRows | Select-Object -ExpandProperty demand_id) -notcontains $_.demand_id })
if ($roadmapColumnsOk -and $frozenRows.Count -eq $roadmapRows.Count -and $nowRows.Count -ge 5 -and $missingNowDemand.Count -eq 0) {
  Add-Check -Key "roadmap_frozen" -Label "V2 roadmap frozen" -Status "pass" -Detail "Roadmap rows=$($roadmapRows.Count), now=$($nowRows.Count)"
} else {
  Add-Check -Key "roadmap_frozen" -Label "V2 roadmap frozen" -Status "fail" -Detail "Roadmap is not frozen or first batch is not in now horizon"
}

$decisionColumnsOk = Test-CsvColumns -Rows $decisionRows -Columns @("decision_id", "demand_id", "decision", "reason", "owner", "status")
$approvedDecisionIds = @($decisionRows | Where-Object { $_.status -eq "APPROVED" } | Select-Object -ExpandProperty demand_id)
$missingDecisions = @($demandRows | Where-Object { $approvedDecisionIds -notcontains $_.demand_id } | Select-Object -ExpandProperty demand_id)
if ($decisionColumnsOk -and $missingDecisions.Count -eq 0) {
  Add-Check -Key "scope_decisions" -Label "scope decisions" -Status "pass" -Detail "Approved decisions=$($decisionRows.Count)"
} else {
  Add-Check -Key "scope_decisions" -Label "scope decisions" -Status "fail" -Detail "Scope decisions missing approval"
}

$integrationColumnsOk = Test-CsvColumns -Rows $integrationRows -Columns @("integration_id", "demand_id", "integration", "priority", "status", "dependency", "security_boundary", "phase")
$p1Integrations = @($integrationRows | Where-Object { $_.priority -eq "P1" })
$blockedIntegrations = @($integrationRows | Where-Object { $_.status -like "BLOCKED*" })
if ($integrationColumnsOk -and $integrationRows.Count -ge 5 -and $p1Integrations.Count -ge 3) {
  Add-Check -Key "integration_expansion" -Label "integration expansion" -Status "pass" -Detail "Integrations=$($integrationRows.Count), P1=$($p1Integrations.Count)"
} else {
  Add-Check -Key "integration_expansion" -Label "integration expansion" -Status "fail" -Detail "Integration expansion plan incomplete"
}

$spikeColumnsOk = Test-CsvColumns -Rows $spikeRows -Columns @("spike_id", "demand_id", "risk_level", "status", "objective", "exit_criteria", "owner")
$spikeDemandIds = @($spikeRows | Select-Object -ExpandProperty demand_id)
$highRiskDemandIds = @($demandRows | Where-Object { [int]$_.risk_score -ge 5 } | Select-Object -ExpandProperty demand_id)
$highRiskWithoutSpike = @($highRiskDemandIds | Where-Object { $spikeDemandIds -notcontains $_ })
if ($spikeColumnsOk -and $highRiskWithoutSpike.Count -eq 0) {
  Add-Check -Key "technical_spikes" -Label "technical spikes" -Status "pass" -Detail "High-risk demands covered=$($highRiskDemandIds.Count)"
} else {
  Add-Check -Key "technical_spikes" -Label "technical spikes" -Status "fail" -Detail "High-risk demands missing spike coverage" -Meta @{ missing = $highRiskWithoutSpike }
}

$acceptanceColumnsOk = Test-CsvColumns -Rows $acceptanceRows -Columns @("acceptance_id", "demand_id", "criteria", "verification_gate", "regression_scope", "status", "required")
$requiredAcceptanceBad = @($acceptanceRows | Where-Object { (Test-RequiredFlag $_.required) -and $_.status -ne "READY" })
if ($acceptanceColumnsOk -and $requiredAcceptanceBad.Count -eq 0 -and $acceptanceRows.Count -ge $firstBatchRows.Count) {
  Add-Check -Key "acceptance_criteria" -Label "acceptance criteria" -Status "pass" -Detail "Acceptance criteria=$($acceptanceRows.Count)"
} else {
  Add-Check -Key "acceptance_criteria" -Label "acceptance criteria" -Status "fail" -Detail "Acceptance criteria incomplete"
}

$longTermRoadmap = Get-Content -LiteralPath (Join-Path $FixtureRoot "long-term-roadmap.md") -Raw -Encoding UTF8
if ($longTermRoadmap.Contains("V2.1") -and $longTermRoadmap.Contains("V2.2") -and $longTermRoadmap.Contains("V2.3") -and $longTermRoadmap.Contains("Guardrail")) {
  Add-Check -Key "long_term_roadmap" -Label "long-term roadmap" -Status "pass" -Detail "Long-term roadmap covers V2.1, V2.2, V2.3 and guardrail"
} else {
  Add-Check -Key "long_term_roadmap" -Label "long-term roadmap" -Status "fail" -Detail "Long-term roadmap narrative incomplete"
}

$demandRows | Export-Csv -NoTypeInformation -Encoding UTF8 -Path $demandReportCsv
$firstBatchRows | Export-Csv -NoTypeInformation -Encoding UTF8 -Path $firstBatchCsv
$roadmapRows | Export-Csv -NoTypeInformation -Encoding UTF8 -Path $roadmapReportCsv
$spikeRows | Export-Csv -NoTypeInformation -Encoding UTF8 -Path $riskReportCsv
$evidenceMatrix | Export-Csv -NoTypeInformation -Encoding UTF8 -Path $evidenceMatrixCsv

$secret = [string]::Concat([char]54, [char]53, [char]52, [char]51, [char]50, [char]49)
$secretHits = @()
$scanFiles = @(Get-ChildItem -LiteralPath $FixtureRoot -File -Recurse)
$scanFiles += @(Get-Item -LiteralPath (Join-Path $repoRoot "scripts\run-v2-roadmap-gate.ps1"))
foreach ($file in $scanFiles) {
  $text = Get-Content -LiteralPath $file.FullName -Raw -Encoding UTF8 -ErrorAction SilentlyContinue
  if ($text -and $text.Contains($secret)) {
    $secretHits += $file.FullName
  }
}
if ($secretHits.Count -eq 0) {
  Add-Check -Key "secret_scan" -Label "secret scan" -Status "pass" -Detail "No administrator password literal found in V2 roadmap package or gate script"
} else {
  Add-Check -Key "secret_scan" -Label "secret scan" -Status "fail" -Detail "Secret literal detected" -Meta @{ hits = $secretHits }
}

$externalBlocked = $false
if (($phase8Summary -and $phase8Summary.status -eq "PASS_WITH_WEBHOOK_BLOCKED") -or
    ($phase9Summary -and $phase9Summary.status -eq "PASS_WITH_WEBHOOK_BLOCKED") -or
    ($phase10Summary -and $phase10Summary.status -eq "PASS_WITH_WEBHOOK_BLOCKED") -or
    ($phase11Summary -and $phase11Summary.status -eq "PASS_WITH_WEBHOOK_BLOCKED") -or
    $blockedIntegrations.Count -gt 0) {
  $externalBlocked = $true
  Add-Check -Key "external_webhook" -Label "external alert webhook" -Status "blocked" -Required $false -Detail "Real external alert Webhook remains unavailable; inherited into V2 roadmap"
}

$failedRequired = @($checks | Where-Object { $_.required -and $_.status -eq "fail" })
$warningsList = @($checks | Where-Object { $_.status -eq "warn" })
$blockedList = @($checks | Where-Object { $_.status -eq "blocked" })
$overallStatus = if ($failedRequired.Count -gt 0) {
  "FAIL"
} elseif ($blockedList.Count -gt 0 -or $externalBlocked) {
  "PASS_WITH_WEBHOOK_BLOCKED"
} elseif ($warningsList.Count -gt 0) {
  "WARN"
} else {
  "PASS"
}
$alertSeverity = if ($overallStatus -eq "FAIL") { "critical" } elseif ($overallStatus -eq "WARN") { "warning" } elseif ($overallStatus -eq "PASS_WITH_WEBHOOK_BLOCKED") { "blocked" } else { "ok" }

$summary = [ordered]@{
  name = "phase12-v2-roadmap-gate"
  status = $overallStatus
  alert_severity = $alertSeverity
  generated_at = (Get-Date).ToUniversalTime().ToString("o")
  artifact_dir = $artifactDir
  branch = $branch
  commit = $commit
  remote = $remoteUrl
  fixture_root = $FixtureRoot
  checks = $checks
  metrics = [ordered]@{
    demands = $demandRows.Count
    first_batch_items = $firstBatchRows.Count
    roadmap_rows = $roadmapRows.Count
    approved_decisions = $decisionRows.Count
    integrations = $integrationRows.Count
    technical_spikes = $spikeRows.Count
    acceptance_criteria = $acceptanceRows.Count
    blocked_integrations = $blockedIntegrations.Count
  }
  artifacts = [ordered]@{
    evidence_matrix = $evidenceMatrixCsv
    demand_pool_report = $demandReportCsv
    first_batch_report = $firstBatchCsv
    roadmap_report = $roadmapReportCsv
    risk_and_spike_report = $riskReportCsv
  }
  totals = [ordered]@{
    total = $checks.Count
    failed_required = $failedRequired.Count
    warnings = $warningsList.Count
    blocked = $blockedList.Count
  }
}
Save-Json -Path $summaryJson -Value $summary

$markdown = New-Object System.Collections.Generic.List[string]
$markdown.Add("# Phase 12 V2 Roadmap Gate") | Out-Null
$markdown.Add("") | Out-Null
$markdown.Add("- Status: $overallStatus") | Out-Null
$markdown.Add("- Alert severity: $alertSeverity") | Out-Null
$markdown.Add("- Generated at: $($summary.generated_at)") | Out-Null
$markdown.Add("- Branch: $branch") | Out-Null
$markdown.Add("- Commit: $commit") | Out-Null
$markdown.Add("- Artifact dir: $artifactDir") | Out-Null
$markdown.Add("- Fixture root: $FixtureRoot") | Out-Null
$markdown.Add("") | Out-Null
$markdown.Add("## Metrics") | Out-Null
$markdown.Add("") | Out-Null
$markdown.Add("| Metric | Count |") | Out-Null
$markdown.Add("|---|---:|") | Out-Null
$markdown.Add("| Demands | $($demandRows.Count) |") | Out-Null
$markdown.Add("| First batch items | $($firstBatchRows.Count) |") | Out-Null
$markdown.Add("| Roadmap rows | $($roadmapRows.Count) |") | Out-Null
$markdown.Add("| Approved decisions | $($decisionRows.Count) |") | Out-Null
$markdown.Add("| Integrations | $($integrationRows.Count) |") | Out-Null
$markdown.Add("| Technical spikes | $($spikeRows.Count) |") | Out-Null
$markdown.Add("| Acceptance criteria | $($acceptanceRows.Count) |") | Out-Null
$markdown.Add("| Blocked integrations | $($blockedIntegrations.Count) |") | Out-Null
$markdown.Add("") | Out-Null
$markdown.Add("## Checks") | Out-Null
$markdown.Add("") | Out-Null
$markdown.Add("| Check | Required | Status | Detail |") | Out-Null
$markdown.Add("|---|---:|---|---|") | Out-Null
foreach ($check in $checks) {
  $markdown.Add("| $($check.label) | $($check.required) | $($check.status.ToUpperInvariant()) | $($check.detail) |") | Out-Null
}
$markdown.Add("") | Out-Null
$markdown.Add("Local artifacts:") | Out-Null
$markdown.Add("") | Out-Null
$markdown.Add('- `v2-roadmap-gate-summary.json`') | Out-Null
$markdown.Add('- `v2-roadmap-gate-summary.md`') | Out-Null
$markdown.Add('- `phase12-evidence-matrix.csv`') | Out-Null
$markdown.Add('- `phase12-demand-pool-report.csv`') | Out-Null
$markdown.Add('- `phase12-first-batch-report.csv`') | Out-Null
$markdown.Add('- `phase12-roadmap-report.csv`') | Out-Null
$markdown.Add('- `phase12-risk-and-spike-report.csv`') | Out-Null
$markdown | Set-Content -Encoding UTF8 -Path $summaryMd

Write-Host "PHASE12_V2_ROADMAP_GATE_$overallStatus $artifactDir"
if ($overallStatus -eq "FAIL" -or ($FailOnWarn -and $warningsList.Count -gt 0) -or ($FailOnExternalBlocked -and $blockedList.Count -gt 0)) {
  throw "Phase 12 V2 roadmap gate $overallStatus. See $summaryMd"
}