#!/usr/bin/env pwsh
<#
.SYNOPSIS
    Builds (and optionally tests) all module solutions under src/.

.DESCRIPTION
    Discovers all *.sln files under src/ (excluding the root StellaOps.sln)
    and runs dotnet build on each. Pass -Test to also run dotnet test.

.PARAMETER Test
    Also run dotnet test on each solution after building.

.PARAMETER Configuration
    Build configuration. Defaults to Debug.

.EXAMPLE
    .\scripts\build-all-solutions.ps1
    .\scripts\build-all-solutions.ps1 -Test
    .\scripts\build-all-solutions.ps1 -Test -Configuration Release
#>
[CmdletBinding()]
param(
    [switch]$Test,
    [switch]$StopRepoHostProcesses,
    [ValidateSet('Debug', 'Release')]
    [string]$Configuration = 'Debug'
)

Set-StrictMode -Version Latest
$ErrorActionPreference = 'Continue'

$repoRoot = Split-Path -Parent $PSScriptRoot
$srcDir = Join-Path $repoRoot 'src'

function Get-RepoRelativePath {
    param(
        [Parameter(Mandatory = $true)]
        [string]$Root,
        [Parameter(Mandatory = $true)]
        [string]$Path
    )

    $normalizedRoot = [System.IO.Path]::GetFullPath($Root).TrimEnd('\', '/')
    $normalizedPath = [System.IO.Path]::GetFullPath($Path)

    if ($normalizedPath.StartsWith($normalizedRoot, [System.StringComparison]::OrdinalIgnoreCase)) {
        return $normalizedPath.Substring($normalizedRoot.Length).TrimStart('\', '/')
    }

    return $normalizedPath
}

function Test-RepoOwnedText {
    param(
        [Parameter(Mandatory = $true)]
        [string]$Root,
        [AllowNull()]
        [string]$Value
    )

    if ([string]::IsNullOrWhiteSpace($Value)) {
        return $false
    }

    $normalizedRoot = [System.IO.Path]::GetFullPath($Root).TrimEnd('\', '/')
    $normalizedValue = $Value.Replace('/', '\')

    return $normalizedValue.IndexOf($normalizedRoot, [System.StringComparison]::OrdinalIgnoreCase) -ge 0
}

function Test-IsWindowsPlatform {
    return [System.Runtime.InteropServices.RuntimeInformation]::IsOSPlatform(
        [System.Runtime.InteropServices.OSPlatform]::Windows)
}

function Stop-RepoHostProcesses {
    param(
        [Parameter(Mandatory = $true)]
        [string]$Root
    )

    if (-not (Test-IsWindowsPlatform)) {
        return
    }

    $candidates = @(Get-CimInstance Win32_Process -Filter "Name = 'dotnet.exe' OR Name LIKE 'StellaOps.%'")
    $staleProcesses = @()

    foreach ($candidate in $candidates) {
        if ($candidate.ProcessId -eq $PID) {
            continue
        }

        $executablePath = "$($candidate.ExecutablePath)"
        $commandLine = "$($candidate.CommandLine)"
        $name = "$($candidate.Name)"

        $repoOwned = (Test-RepoOwnedText -Root $Root -Value $executablePath) -or
            (Test-RepoOwnedText -Root $Root -Value $commandLine)
        if (-not $repoOwned) {
            continue
        }

        $looksLikeService = $name -like 'StellaOps.*' -or $commandLine -match 'StellaOps\.[A-Za-z0-9_.-]+'
        if (-not $looksLikeService) {
            continue
        }

        $staleProcesses += [pscustomobject]@{
            ProcessId = $candidate.ProcessId
            Name = $name
            ExecutablePath = $executablePath
            CommandLine = $commandLine
        }
    }

    $staleProcesses = @($staleProcesses | Sort-Object ProcessId -Unique)
    if ($staleProcesses.Count -eq 0) {
        Write-Host 'No repo-local Stella host processes detected.' -ForegroundColor DarkGray
        return
    }

    Write-Host "Stopping $($staleProcesses.Count) repo-local Stella host process(es) before build." -ForegroundColor Yellow

    foreach ($stale in $staleProcesses) {
        $location = if (-not [string]::IsNullOrWhiteSpace($stale.ExecutablePath)) {
            Get-RepoRelativePath -Root $Root -Path $stale.ExecutablePath
        } else {
            $stale.CommandLine
        }

        Write-Host "  - [$($stale.ProcessId)] $($stale.Name) :: $location" -ForegroundColor DarkYellow
        Stop-Process -Id $stale.ProcessId -Force -ErrorAction Stop
    }

    Start-Sleep -Seconds 1
    $remaining = @($staleProcesses | Where-Object { Get-Process -Id $_.ProcessId -ErrorAction SilentlyContinue })
    if ($remaining.Count -gt 0) {
        $remainingIds = ($remaining | ForEach-Object { $_.ProcessId }) -join ', '
        throw "Failed to stop repo-local Stella host processes: $remainingIds"
    }

    Write-Host 'Repo-local Stella host processes stopped.' -ForegroundColor Green
}

if ($StopRepoHostProcesses) {
    Stop-RepoHostProcesses -Root $repoRoot
}

$solutions = Get-ChildItem -Path $srcDir -Filter '*.sln' -Recurse |
    Where-Object {
        $_.Name -ne 'StellaOps.sln' -and
        $_.FullName -notmatch '[\\/](node_modules|bin|obj)[\\/]'
    } |
    Sort-Object FullName

if ($solutions.Count -eq 0) {
    Write-Error 'No solution files found under src/.'
    exit 1
}

Write-Host "Found $($solutions.Count) solution(s) to build." -ForegroundColor Cyan
Write-Host ''

$buildPass = @()
$buildFail = @()
$testPass = @()
$testFail = @()
$testSkipped = @()

foreach ($sln in $solutions) {
    $rel = Get-RepoRelativePath -Root $repoRoot -Path $sln.FullName
    Write-Host "--- BUILD: $rel ---" -ForegroundColor Yellow

    dotnet build $sln.FullName --configuration $Configuration --nologo -v quiet
    if ($LASTEXITCODE -eq 0) {
        $buildPass += $rel
    } else {
        $buildFail += $rel
        Write-Host "  FAILED" -ForegroundColor Red
        continue  # skip test if build failed
    }

    if ($Test) {
        Write-Host "--- TEST:  $rel ---" -ForegroundColor Yellow
        dotnet test $sln.FullName --configuration $Configuration --nologo --no-build -v quiet
        if ($LASTEXITCODE -eq 0) {
            $testPass += $rel
        } else {
            $testFail += $rel
            Write-Host "  TEST FAILED" -ForegroundColor Red
        }
    }
}

Write-Host ''
Write-Host '========== Summary ==========' -ForegroundColor Cyan
Write-Host "Build passed : $($buildPass.Count)" -ForegroundColor Green
if ($buildFail.Count -gt 0) {
    Write-Host "Build failed : $($buildFail.Count)" -ForegroundColor Red
    $buildFail | ForEach-Object { Write-Host "  - $_" -ForegroundColor Red }
}
if ($Test) {
    Write-Host "Test passed  : $($testPass.Count)" -ForegroundColor Green
    if ($testFail.Count -gt 0) {
        Write-Host "Test failed  : $($testFail.Count)" -ForegroundColor Red
        $testFail | ForEach-Object { Write-Host "  - $_" -ForegroundColor Red }
    }
}

if ($buildFail.Count -gt 0 -or $testFail.Count -gt 0) {
    exit 1
}