using System.Diagnostics;
using System.IO;
using System.Runtime.Versioning;
using System.Text;

namespace SourceGit.Native {
    [SupportedOSPlatform("macOS")]
    internal class MacOS : OS.IBackend {
        public string FindGitInstallDir() {
            if (File.Exists("/usr/bin/git")) return "/usr";
            return string.Empty;
        }

        public string FindVSCode() {
            if (File.Exists("/Applications/Visual Studio Code.app/Contents/Resources/app/bin/code")) {
                return "/Applications/Visual Studio Code.app/Contents/Resources/app/bin/code";
            }

            return string.Empty;
        }

        public void OpenBrowser(string url) {
            Process.Start("open", url);
        }

        public void OpenInFileManager(string path, bool select) {
            if (Directory.Exists(path)) {
                Process.Start("open", path);
            } else if (File.Exists(path)) {
                Process.Start("open", $"\"{path}\" -R");
            }
        }

        public void OpenTerminal(string workdir) {
            var dir = string.IsNullOrEmpty(workdir) ? "~" : workdir;
            var builder = new StringBuilder();
            builder.AppendLine("on run argv");
            builder.AppendLine("    tell application \"Terminal\"");
            builder.AppendLine($"        do script \"cd '{dir}'\"");
            builder.AppendLine("        activate");
            builder.AppendLine("    end tell");
            builder.AppendLine("end run");

            var tmp = Path.GetTempFileName();
            File.WriteAllText(tmp, builder.ToString());

            var proc = Process.Start("/usr/bin/osascript", $"\"{tmp}\"");
            proc.Exited += (o, e) => File.Delete(tmp);
        }

        public void OpenWithDefaultEditor(string file) {
            Process.Start("open", file);
        }
    }
}