// Test-only executable; isolated credentials arrive through stdin, never argv.
import AppKit
import SwiftUI
import RastrilloApple
import SheetsKit

@main struct Review: App {
  private let input: ReviewInput
  private let client: NativeHTTP

  init() {
    input = try! JSONDecoder().decode(ReviewInput.self, from: FileHandle.standardInput.readDataToEndOfFile())
    precondition(input.origin.scheme == "http" && input.origin.host == "127.0.0.1")
    client = NativeHTTP(origin: input.origin, credential: input.credential)
  }

  var body: some Scene {
    WindowGroup("Sheets native review") {
      SheetsWorkspace(client: client, signOut: {})
        .preferredColorScheme(.light)
        .task { await capture() }
    }.defaultSize(width: 1200, height: 820)
  }

  @MainActor private func capture() async {
    do {
      guard CGPreflightScreenCaptureAccess() else {
        FileHandle.standardError.write(Data("macOS screen-capture access is unavailable for the review executable.\n".utf8))
        exit(2)
      }
      try await Task.sleep(for: .milliseconds(500))
      guard let window = NSApplication.shared.windows.first(where: { $0.title == "Sheets native review" }) else {
        throw NativeClientError.message("Review window did not open.")
      }
      window.makeKeyAndOrderFront(nil)
      NSApplication.shared.activate()
      for _ in 0..<40 {
        if let view = window.contentView, pressFixture(in: view) { break }
        try await Task.sleep(for: .milliseconds(100))
      }
      try await Task.sleep(for: .seconds(2))
      let screenshot = Process()
      screenshot.executableURL = URL(fileURLWithPath: "/usr/sbin/screencapture")
      screenshot.arguments = ["-x", "-o", "-l", String(window.windowNumber), input.output]
      try screenshot.run()
      while screenshot.isRunning { try await Task.sleep(for: .milliseconds(50)) }
      guard screenshot.terminationStatus == 0 else { throw NativeClientError.message("Review window capture failed.") }
      NSApplication.shared.terminate(nil)
    } catch {
      FileHandle.standardError.write(Data("Native review capture failed.\n".utf8))
      exit(1)
    }
  }

  @MainActor private func pressFixture(in element: Any) -> Bool {
    guard let accessible = element as? any NSAccessibilityProtocol else { return false }
    if accessible.accessibilityLabel() == "Native review workbook", accessible.accessibilityPerformPress() { return true }
    for child in accessible.accessibilityChildren() ?? [] {
      if pressFixture(in: child) { return true }
    }
    return false
  }
}