#Requires -Version 5.1
<#
.SYNOPSIS
  Build (optional) and flash YNGJ-GT1-M app via IAR cspybat + J-Link.
  Auto-selects Cortex-M4 and suppresses J-Link device-selection dialogs.
#>
param(
    [switch]$NoBuild
)

$ErrorActionPreference = "Stop"
$Root = Split-Path -Parent $PSScriptRoot
$Ewp = Join-Path $Root "project\IAR_V7.4\YNGJ-GT1-M.ewp"
$ExeDir = Join-Path $Root "project\IAR_V7.4\YNGJ-GT1-M\Exe"
$Out = Join-Path $ExeDir "YNGJ-GT1-M.out"
$Bin = Join-Path $ExeDir "YNGJ-GT1-M.bin"
$ToolsDir = Join-Path $Root "tools"
$SettingsSrc = Join-Path $ToolsDir "JLinkSettings.ini"
$JlinkScript = Join-Path $ToolsDir "jlink_hidedevid.jlink"
$GeneralXcl = Join-Path $Root "project\IAR_V7.4\settings\YNGJ-GT1-M.YNGJ-GT1-M.general.xcl"
$DriverXcl = Join-Path $Root "project\IAR_V7.4\settings\YNGJ-GT1-M.YNGJ-GT1-M.driver.xcl"
$IarBuild = "C:\Program Files (x86)\IAR Systems\Embedded Workbench 7.3\common\bin\IarBuild.exe"
$CspyBat = "C:\Program Files (x86)\IAR Systems\Embedded Workbench 7.3\common\bin\cspybat.exe"
$TempFlash = "C:\Temp\k1flash"

# Suppress J-Link unknown-device popup (cwd / AppData / ASCII path for script).
New-Item -ItemType Directory -Force -Path $ExeDir, $TempFlash | Out-Null
Copy-Item -Force $SettingsSrc (Join-Path $ExeDir "JLinkSettings.ini")
Copy-Item -Force $SettingsSrc (Join-Path $TempFlash "JLinkSettings.ini")
Copy-Item -Force $JlinkScript (Join-Path $TempFlash "jlink_hidedevid.jlink")
$Roaming = Join-Path $env:APPDATA "SEGGER"
New-Item -ItemType Directory -Force -Path $Roaming | Out-Null
Copy-Item -Force $SettingsSrc (Join-Path $Roaming "JLinkSettings.ini")

# Stop leftover debug servers that hold the probe.
Get-Process -Name CSpyBat, JLinkGUIServer, JLink -ErrorAction SilentlyContinue |
    Where-Object { $_.ProcessName -match 'CSpyBat|JLinkGUIServer' } |
    Stop-Process -Force -ErrorAction SilentlyContinue

if (-not $NoBuild) {
    Write-Host "Building..."
    & $IarBuild $Ewp -make YNGJ-GT1-M
    if ($LASTEXITCODE -ne 0) { throw "IarBuild failed: $LASTEXITCODE" }
}

if (-not (Test-Path $Out)) { throw "Missing $Out" }

if (Test-Path $Bin) {
    Copy-Item -Force $Bin (Join-Path $TempFlash "YNGJ-GT1-M.bin")
}

Write-Host "Flashing (Cortex-M4, no device dialog)..."
Push-Location $ExeDir
try {
    # HideDeviceSelection comes from JLinkSettings.ini + driver.xcl jlink script.
    & $CspyBat -f $GeneralXcl --download_only --silent --backend -f $DriverXcl
    $code = $LASTEXITCODE
} finally {
    Pop-Location
}

if ($code -ne 0) { throw "Flash failed: $code" }
Write-Host "Flash OK"
exit 0