$ErrorActionPreference = 'Stop'
$project = $PSScriptRoot
$env:IDF_PATH = if ($env:IDF_PATH) { $env:IDF_PATH } else { 'E:\Espressif\frameworks\esp-idf-v5.5.4' }
$env:IDF_TOOLS_PATH = if ($env:IDF_TOOLS_PATH) { $env:IDF_TOOLS_PATH } else { 'E:\Espressif' }
$env:IDF_PYTHON_ENV_PATH = if ($env:IDF_PYTHON_ENV_PATH) { $env:IDF_PYTHON_ENV_PATH } else { 'E:\Espressif\python_env\idf5.5_py3.11_env' }
$env:IDF_TARGET = 'esp32p4'
$env:PYTHON = Join-Path $env:IDF_PYTHON_ENV_PATH 'Scripts\python.exe'
$env:IDF_PYTHON = $env:PYTHON
$ninja = Get-ChildItem (Join-Path $env:IDF_TOOLS_PATH 'tools\ninja') -Directory | Sort-Object Name -Descending | Select-Object -First 1
$cmake = Get-ChildItem (Join-Path $env:IDF_TOOLS_PATH 'tools\cmake') -Directory | Sort-Object Name -Descending | Select-Object -First 1
$riscv = Get-ChildItem (Join-Path $env:IDF_TOOLS_PATH 'tools\riscv32-esp-elf') -Directory | Sort-Object Name -Descending | Select-Object -First 1
$toolDirs = @($ninja.FullName, (Join-Path $cmake.FullName 'bin'), (Join-Path $riscv.FullName 'riscv32-esp-elf\bin'))
if (@($toolDirs | Where-Object { -not (Test-Path $_) }).Count) { throw 'ESP-IDF build tools not installed.' }
$env:PATH = ($toolDirs -join ';') + ';' + $env:PATH
$csv = (Resolve-Path (Join-Path $project '..\partitions.csv')).Path.Replace('\','/')
$config = Join-Path $project 'sdkconfig'
# sdkconfig is generated/ignored; the actual partition table is always the parent project CSV.
if (Test-Path $config) {
    $text = [System.IO.File]::ReadAllText($config)
    $text = [regex]::Replace($text, '(?m)^CONFIG_PARTITION_TABLE_CUSTOM_FILENAME=.*$', 'CONFIG_PARTITION_TABLE_CUSTOM_FILENAME="' + $csv + '"')
    $text = [regex]::Replace($text, '(?m)^CONFIG_PARTITION_TABLE_FILENAME=.*$', 'CONFIG_PARTITION_TABLE_FILENAME="' + $csv + '"')
    [System.IO.File]::WriteAllText($config,$text)
} else {
    $defaults = Join-Path $project 'sdkconfig.defaults'
    $text = [System.IO.File]::ReadAllText($defaults)
    $text = [regex]::Replace($text, '(?m)^CONFIG_PARTITION_TABLE_CUSTOM_FILENAME=.*$', 'CONFIG_PARTITION_TABLE_CUSTOM_FILENAME="' + $csv + '"')
    [System.IO.File]::WriteAllText($config,$text)
}
Push-Location $project
try {
    $ErrorActionPreference = 'Continue'
    & $env:PYTHON (Join-Path $env:IDF_PATH 'tools\idf.py') -B build_release app
    $result = $LASTEXITCODE
    $ErrorActionPreference = 'Stop'
    if ($result -ne 0) { throw "App build failed: $result" }
} finally { Pop-Location }
$app = Join-Path $project 'build_release\nand_xfer.bin'
Write-Host "App image: $app"