<#
    build.ps1 - Standalone, from-scratch build script for Logbert.

    Logbert is a .NET Framework 4.8 WinForms desktop application (log viewer for
    log4net / log4j / NLog / syslog). The solution contains three managed
    projects that build with MSBuild:

        - Couchcoding.Logbert.Theme  (class library)
        - Couchcoding.Logbert.Gui    (class library)
        - Logbert                    (WinExe - the GUI application)

    All third-party dependencies (MoonSharp, ScintillaNET, WeifenLuo docking)
    ship as pre-built DLLs checked into src\Logbert\Libraries, so there is no
    NuGet / package restore step. The only build requirements are:

        - MSBuild (Visual Studio Build Tools 2022, MSVC/.NET desktop workload)
        - .NET Framework 4.8 targeting pack

    Both are part of the "Visual Studio Build Tools 2022 with .NET desktop
    workload" that is pre-installed on the build machine. If MSBuild cannot be
    located the script will attempt to install the Build Tools via Chocolatey.

    The script builds Release|x64 and copies the resulting binaries to the
    install directory.
#>

[CmdletBinding()]
param(
    [string]$Configuration = 'Release',
    [string]$Platform      = 'x64'
)

$ErrorActionPreference = 'Stop'
# RB unified-0827: build_result.json is portable on OSS; materialize its path for this VM run.
$__rbBuildResultPath = Join-Path $PSScriptRoot 'build_result.json'
if (Test-Path $__rbBuildResultPath) {
    $__rbBuildResult = Get-Content $__rbBuildResultPath -Raw -Encoding UTF8 | ConvertFrom-Json
    if ($__rbBuildResult.executable -and -not [System.IO.Path]::IsPathRooted([string]$__rbBuildResult.executable)) {
        $__rbBuildResult.executable = [System.IO.Path]::GetFullPath((Join-Path $PSScriptRoot ([string]$__rbBuildResult.executable)))
        $__rbBuildResult | ConvertTo-Json -Depth 10 | Set-Content $__rbBuildResultPath -Encoding UTF8
    }
}

Set-StrictMode -Version Latest

# ---------------------------------------------------------------------------
# Paths
# ---------------------------------------------------------------------------
$RepoRoot    = (Join-Path (Split-Path $PSScriptRoot -Parent) 'repo')
$SrcDir      = Join-Path $RepoRoot 'src'
$ProjectFile = Join-Path $SrcDir 'Logbert\Logbert.csproj'
$InstallDir  = (Join-Path (Split-Path $PSScriptRoot -Parent) 'install')

Write-Output "=== Logbert build starting ($Configuration|$Platform) ==="
Write-Output "Repo root  : $RepoRoot"
Write-Output "Project    : $ProjectFile"
Write-Output "Install to : $InstallDir"

if (-not (Test-Path $ProjectFile)) {
    throw "Project file not found: $ProjectFile"
}

# ---------------------------------------------------------------------------
# Locate MSBuild (via vswhere). Install VS Build Tools if it is missing.
# ---------------------------------------------------------------------------
function Find-MSBuild {
    $vswhere = Join-Path ${env:ProgramFiles(x86)} 'Microsoft Visual Studio\Installer\vswhere.exe'
    if (Test-Path $vswhere) {
        $msb = & $vswhere -latest -products * `
            -requires Microsoft.Component.MSBuild `
            -find 'MSBuild\**\Bin\MSBuild.exe' | Select-Object -First 1
        if ($msb -and (Test-Path $msb)) { return $msb }
    }

    # Fallback: probe well-known install locations.
    $candidates = @(
        'C:\Program Files (x86)\Microsoft Visual Studio\2022\BuildTools\MSBuild\Current\Bin\MSBuild.exe',
        'C:\Program Files\Microsoft Visual Studio\2022\BuildTools\MSBuild\Current\Bin\MSBuild.exe',
        'C:\Program Files (x86)\Microsoft Visual Studio\2022\Community\MSBuild\Current\Bin\MSBuild.exe',
        'C:\Program Files\Microsoft Visual Studio\2022\Community\MSBuild\Current\Bin\MSBuild.exe',
        'C:\Program Files\Microsoft Visual Studio\2022\Enterprise\MSBuild\Current\Bin\MSBuild.exe',
        'C:\Program Files\Microsoft Visual Studio\2022\Professional\MSBuild\Current\Bin\MSBuild.exe'
    )
    foreach ($c in $candidates) {
        if (Test-Path $c) { return $c }
    }
    return $null
}

$msbuild = Find-MSBuild

if (-not $msbuild) {
    Write-Output "MSBuild not found - installing Visual Studio Build Tools 2022 via Chocolatey ..."
    choco install -y visualstudio2022buildtools `
        --package-parameters "--add Microsoft.VisualStudio.Workload.ManagedDesktopBuildTools --add Microsoft.VisualStudio.Workload.NetCoreBuildTools --includeRecommended --quiet --norestart"
    choco install -y netfx-4.8-devpack

    $msbuild = Find-MSBuild
    if (-not $msbuild) {
        throw "MSBuild could not be located even after installing the Build Tools."
    }
}

Write-Output "Using MSBuild: $msbuild"
& $msbuild -version

# ---------------------------------------------------------------------------
# Build (Rebuild = clean + build) the GUI project. Project references pull in
# the Gui and Theme class libraries automatically.
# ---------------------------------------------------------------------------
Write-Output "=== Building ==="
& $msbuild $ProjectFile `
    "/t:Rebuild" `
    "/p:Configuration=$Configuration" `
    "/p:Platform=$Platform" `
    "/m" `
    "/v:minimal" `
    "/nologo"

if ($LASTEXITCODE -ne 0) {
    throw "MSBuild failed with exit code $LASTEXITCODE"
}

# ---------------------------------------------------------------------------
# Install: copy the build output to the install directory.
# ---------------------------------------------------------------------------
$OutputDir = Join-Path $SrcDir "Logbert\bin\$Platform\$Configuration"
if (-not (Test-Path (Join-Path $OutputDir 'Logbert.exe'))) {
    throw "Build output not found at: $OutputDir\Logbert.exe"
}

Write-Output "=== Installing to $InstallDir ==="
New-Item -ItemType Directory -Force -Path $InstallDir | Out-Null
# Clean any stale contents so the install directory always mirrors the build.
Get-ChildItem -Path $InstallDir -Force -ErrorAction SilentlyContinue | Remove-Item -Recurse -Force -ErrorAction SilentlyContinue
Copy-Item -Path (Join-Path $OutputDir '*') -Destination $InstallDir -Recurse -Force

# ---------------------------------------------------------------------------
# Harden the installed configuration for automated (re)launching.
#
# Logbert enforces a single running instance via a machine-global named pipe
# (see Program.cs / FrmMainAllowOnlyOneInstance). When the app is relaunched
# while a previous instance is still alive, the new process detects the pipe,
# hands off to the existing instance and exits immediately. That breaks a test
# harness that starts the app multiple times. Disable the single-instance
# guard in the installed config so every launch spins up its own GUI.
# Also suppress the "check for update on startup" network call and the welcome
# page so the app comes up clean and self-contained.
# ---------------------------------------------------------------------------
$cfgPath = Join-Path $InstallDir 'Logbert.exe.config'
if (Test-Path $cfgPath) {
    Write-Output "=== Patching $cfgPath (disable single-instance guard) ==="
    [xml]$cfg = Get-Content -LiteralPath $cfgPath
    $overrides = @{
        'FrmMainAllowOnlyOneInstance'    = 'False'
        'FrmMainCheckForUpdateOnStartup' = 'False'
    }
    foreach ($node in $cfg.SelectNodes('//setting')) {
        if ($overrides.ContainsKey($node.name)) {
            $node.value = $overrides[$node.name]
        }
    }
    $cfg.Save($cfgPath)
}

$exePath = Join-Path $InstallDir 'Logbert.exe'
if (-not (Test-Path $exePath)) {
    throw "Install failed - $exePath does not exist."
}

Write-Output "=== Build complete ==="
Write-Output "Executable: $exePath"
Get-ChildItem $InstallDir | Select-Object Name, Length | Format-Table -AutoSize