# RadioTEDU Terminal — Windows PowerShell
# Download: https://radiotedu.com/install.ps1
$ErrorActionPreference = 'Stop'
$terminalRelease = Invoke-RestMethod -Uri 'https://radiotedu.com/tui/latest.json' -Headers @{'Cache-Control'='no-cache'}
$terminalVersion = $terminalRelease.version
$terminalPackageUrl = [uri]$terminalRelease.package
if ($terminalPackageUrl.Scheme -ne 'https' -or $terminalPackageUrl.Host -ne 'radiotedu.com' -or $terminalPackageUrl.AbsolutePath -notmatch '^/tui/radiotedu-[a-zA-Z0-9.-]+\.tgz$' -or $terminalRelease.sha256 -notmatch '^[a-f0-9]{64}$') { throw 'The release manifest is invalid.' }

if (-not (Get-Command node -ErrorAction SilentlyContinue)) {
    throw 'Node.js is required. Install the current LTS release from https://nodejs.org or use: winget install OpenJS.NodeJS.LTS'
}
$terminalNodeMajor = [int]((& node --version).TrimStart('v').Split('.')[0])
if ($terminalNodeMajor -lt 18) { throw 'RadioTEDU requires Node.js 18 or newer. Please install the current LTS release.' }
$terminalNpm = Get-Command npm.cmd -ErrorAction SilentlyContinue
if (-not $terminalNpm) { $terminalNpm = Get-Command npm -ErrorAction SilentlyContinue }
if (-not $terminalNpm) { throw 'npm was not found. Reinstall Node.js with npm, then open a new terminal.' }

Write-Host "Installing RadioTEDU Terminal $terminalVersion..."
$terminalDownload = Join-Path ([IO.Path]::GetTempPath()) ('radiotedu-' + [guid]::NewGuid().ToString('N') + '.tgz')
Invoke-WebRequest -Uri $terminalPackageUrl -OutFile $terminalDownload -UseBasicParsing
if ((Get-FileHash -LiteralPath $terminalDownload -Algorithm SHA256).Hash.ToLowerInvariant() -ne $terminalRelease.sha256) { Remove-Item -LiteralPath $terminalDownload; throw 'Package checksum mismatch. Installation stopped.' }
$terminalArgs = @('install', '--global', '--ignore-scripts', $terminalDownload)
$terminalGlobalRoot = (& $terminalNpm.Source root --global | Select-Object -Last 1)
if ($LASTEXITCODE -ne 0) { throw 'Could not determine the npm global package directory.' }
$terminalOtherName = if ($terminalRelease.name -eq 'radiotedu-tui') { 'radiotedu' } else { 'radiotedu-tui' }
$terminalLegacy = Join-Path $terminalGlobalRoot ($terminalOtherName + '\package.json')
if (Test-Path -LiteralPath $terminalLegacy) {
    $terminalLegacyPackage = Get-Content -LiteralPath $terminalLegacy -Raw | ConvertFrom-Json
    if ($terminalLegacyPackage.name -eq $terminalOtherName) {
        # Both official package names own these two launch commands. Keep user data intact.
        $terminalArgs += '--force'
        Write-Host 'Updating the existing RadioTEDU command aliases. Saved account settings are preserved.'
    }
}
try {
    & $terminalNpm.Source @terminalArgs
    if ($LASTEXITCODE -ne 0) { throw 'Installation failed. Account settings have not been deleted.' }
} finally { if (Test-Path -LiteralPath $terminalDownload) { Remove-Item -LiteralPath $terminalDownload } }

$terminalPrefix = (& $terminalNpm.Source prefix --global | Select-Object -Last 1)
$terminalCommand = Join-Path $terminalPrefix 'radiotedu.cmd'
if (-not (Test-Path -LiteralPath $terminalCommand)) { throw 'The package was installed, but its Windows launch command is missing.' }
& $terminalCommand --version
if ($LASTEXITCODE -ne 0) { throw 'The installed command did not pass its version check.' }

if (-not (Get-Command radiotedu -ErrorAction SilentlyContinue)) {
    $terminalUserPath = [string][Environment]::GetEnvironmentVariable('Path', 'User')
    if ($terminalPrefix -notin ($terminalUserPath -split ';')) {
        [Environment]::SetEnvironmentVariable('Path', (($terminalUserPath.TrimEnd(';') + ';' + $terminalPrefix).TrimStart(';')), 'User')
    }
    $env:Path = $env:Path + ';' + $terminalPrefix
}
Write-Host 'Ready. Type radiotedu in CMD or PowerShell to open the player.' -ForegroundColor Green
Write-Host 'If an older terminal does not find it, open a new terminal window.'
if (-not (Get-Command mpv -ErrorAction SilentlyContinue) -and -not (Get-Command ffplay -ErrorAction SilentlyContinue)) {
    Write-Host 'Audio needs mpv or ffplay. The application can offer a player download; you can also install an audio engine yourself.'
}
Write-Host 'Optional account pairing: radiotedu login'