param(
    [string]$Hex = "build\merged.hex",
    [string]$BuildDir = "build"
)

Set-StrictMode -Version Latest
$ErrorActionPreference = "Stop"

$RepoRoot = Split-Path -Parent $PSScriptRoot
$HexPath = Join-Path $RepoRoot $Hex
$BuildPath = Join-Path $RepoRoot $BuildDir
$Cmake = "C:\ncs\toolchains\fd21892d0f\opt\bin\cmake.exe"
if (-not (Test-Path -LiteralPath $Cmake)) {
    $Cmake = "cmake"
}

Write-Host "[FLASH] Rebuilding: $BuildPath"
& $Cmake --build $BuildPath

if (-not (Test-Path -LiteralPath $HexPath)) {
    throw "Hex file not found: $HexPath. Build the project first."
}

Write-Host "[FLASH] PRESERVE mode"
Write-Host "[FLASH] Uses sector erase, so NVS/settings and BLE bonds are preserved if the hex has no records in settings_storage."
Write-Host "[FLASH] settings_storage is expected at 0xFE000-0x100000 for this project."
Write-Host "[FLASH] Programming: $HexPath"

nrfjprog --program $HexPath --sectorerase --verify --reset