#Requires -Version 5.1
<#
.SYNOPSIS
    Launches OBS Studio hidden with the replay buffer running, then starts the tray icon.
    Intended to be called by DEM as a logon task (fire and forget — do not wait for completion).

.NOTES
    Reads settings from config.psd1 one level above this script.
    Writes the OBS profile basic.ini dynamically so the correct UNC path and buffer
    duration are baked in at session start.
#>

$ErrorActionPreference = 'Stop'

$configPath = Join-Path $PSScriptRoot '..\config.psd1'
$config     = Import-PowerShellDataFile -Path $configPath

# --- Start transcript logging ---
try {
    $logDir = [System.Environment]::ExpandEnvironmentVariables($config.LogPath)
    New-Item -ItemType Directory -Path $logDir -Force -ErrorAction SilentlyContinue | Out-Null
    Start-Transcript -Path (Join-Path $logDir 'OBSReplayBuffer.log') -Append -ErrorAction Stop
} catch {
    # Log path unavailable — continue without transcript
}

Write-Host "$(Get-Date -Format 'yyyy-MM-dd HH:mm:ss') [INFO] Starting OBS Replay Buffer for user: $env:USERNAME"

# --- Verify required project files are accessible ---
$requiredPaths = @(
    (Join-Path $PSScriptRoot '..\obs-config\global.ini')
    (Join-Path $PSScriptRoot '..\obs-config\plugin_config\obs-websocket\config.json')
    (Join-Path $PSScriptRoot 'Show-ReplayTray.ps1')
    $config.OBSExecutable
)
foreach ($path in $requiredPaths) {
    if (-not (Test-Path -Path $path)) {
        Write-Host "$(Get-Date -Format 'yyyy-MM-dd HH:mm:ss') [ERROR] Required path not accessible: $path"
        Stop-Transcript -ErrorAction SilentlyContinue
        exit 1
    }
}
Write-Host "$(Get-Date -Format 'yyyy-MM-dd HH:mm:ss') [INFO] All required paths verified."

# --- Skip if OBS is already running (handles reconnect scenarios) ---
if (Get-Process -Name 'obs64' -ErrorAction SilentlyContinue) {
    Write-Host "$(Get-Date -Format 'yyyy-MM-dd HH:mm:ss') [INFO] OBS already running - exiting."
    Stop-Transcript -ErrorAction SilentlyContinue
    exit 0
}

# --- Create user capture subfolder on UNC share ---
$userCapturePath = Join-Path $config.UNCPath $env:USERNAME
if (-not (Test-Path -Path $userCapturePath)) {
    New-Item -ItemType Directory -Path $userCapturePath -Force | Out-Null
    Write-Host "$(Get-Date -Format 'yyyy-MM-dd HH:mm:ss') [INFO] Created capture folder: $userCapturePath"
} else {
    Write-Host "$(Get-Date -Format 'yyyy-MM-dd HH:mm:ss') [INFO] Capture folder exists: $userCapturePath"
}

# --- Detect primary monitor resolution ---
Add-Type -AssemblyName System.Windows.Forms
$screen = [System.Windows.Forms.Screen]::PrimaryScreen
$width  = $screen.Bounds.Width
$height = $screen.Bounds.Height
Write-Host "$(Get-Date -Format 'yyyy-MM-dd HH:mm:ss') [INFO] Detected resolution: ${width}x${height}"

# --- Deploy global OBS config and WebSocket plugin config ---
$obsConfigRoot = "$env:APPDATA\obs-studio"
$sourceConfig  = Join-Path $PSScriptRoot '..\obs-config'

New-Item -ItemType Directory -Path $obsConfigRoot -Force | Out-Null
Copy-Item -Path "$sourceConfig\global.ini" -Destination "$obsConfigRoot\global.ini" -Force

$wsConfigDir = "$obsConfigRoot\plugin_config\obs-websocket"
New-Item -ItemType Directory -Path $wsConfigDir -Force | Out-Null
Copy-Item -Path "$sourceConfig\plugin_config\obs-websocket\config.json" -Destination "$wsConfigDir\config.json" -Force

Write-Host "$(Get-Date -Format 'yyyy-MM-dd HH:mm:ss') [INFO] OBS config files deployed to: $obsConfigRoot"

# --- Write OBS profile (basic.ini) ---
$profileDir = "$env:APPDATA\obs-studio\basic\profiles\$($config.ProfileName)"
New-Item -ItemType Directory -Path $profileDir -Force | Out-Null

Set-Content -Path "$profileDir\basic.ini" -Encoding UTF8 -Value @(
    '[General]'
    "Name=$($config.ProfileName)"
    ''
    '[Output]'
    'Mode=Simple'
    'FilenameFormatting=%CCYY-%MM-%DD_%hh-%mm-%ss'
    ''
    '[SimpleOutput]'
    "FilePath=$userCapturePath"
    'RecFormat2=mkv'
    'RecQuality=HQ'
    "RecRBTime=$($config.BufferSeconds)"
    'RecRBSize=512'
    ''
    '[Video]'
    "BaseCX=$width"
    "BaseCY=$height"
    "OutputCX=$width"
    "OutputCY=$height"
    'FPSType=1'
    'FPSNum=30'
    'FPSDen=1'
    'ScaleType=bicubic'
    'ColorFormat=NV12'
    'ColorSpace=709'
    'ColorRange=Partial'
)

Write-Host "$(Get-Date -Format 'yyyy-MM-dd HH:mm:ss') [INFO] OBS profile written: $profileDir\basic.ini"

# --- Launch OBS hidden ---
$obsArgs = @(
    '--minimize-to-tray'
    '--startreplaybuffer'
    '--disable-updater'
    '--profile'
    $config.ProfileName
    '--collection'
    $config.SceneCollection
)

Start-Process -FilePath $config.OBSExecutable -ArgumentList $obsArgs -WindowStyle Hidden -WorkingDirectory (Split-Path $config.OBSExecutable)
Write-Host "$(Get-Date -Format 'yyyy-MM-dd HH:mm:ss') [INFO] OBS launched: $($config.OBSExecutable)"

# --- Launch tray icon as a separate background process ---
$trayScript = Join-Path $PSScriptRoot 'Show-ReplayTray.ps1'
Start-Process -FilePath 'powershell.exe' -ArgumentList @(
    '-ExecutionPolicy', 'Bypass'
    '-NonInteractive'
    '-WindowStyle', 'Hidden'
    '-File', $trayScript
) -WindowStyle Hidden
Write-Host "$(Get-Date -Format 'yyyy-MM-dd HH:mm:ss') [INFO] Tray icon launched."

Stop-Transcript -ErrorAction SilentlyContinue