fun downloadFile()

in src/download-file/src.main.kts [57:86]

• 27 lines of code
• 4 McCabe index (conditional complexity)

fun downloadFile(
    url: String,
    targetFile: File,
    authToken: String,
    customHeaders: List<String>
) {
    HttpClients.createDefault().use { httpClient ->
        val httpGet = HttpGet(url)

        if (authToken.isNotEmpty()) httpGet.addHeader(HttpHeaders.AUTHORIZATION, "Bearer $authToken")

        customHeaders.forEach {
            if (!it.contains(":")) {
                error("Invalid header format: '$it'. Expected format: 'Header-Name: Value'")
            }
            val (name, value) = it.split(":", limit = 2).map(String::trim)
            httpGet.addHeader(name, value)
        }

        httpClient.execute(httpGet) { response ->
            val statusCode = response.code
            if (statusCode !in 200..299) {
                error("Failed to download file. HTTP Response: $response")
            }
            response.entity?.content?.use { inputStream ->
                FileOutputStream(targetFile).use { it.write(inputStream.readBytes()) }
            }
        }
    }
}