using System.Text.Json;
using System.Text.Json.Serialization;

namespace StudioE5.SetupWizard;

public enum WizardStep
{
    Welcome,
    Prerequisites,
    InstallVirtualEnvironment,
    RestartRequired,
    InstallPodman,
    ConfigurePodman,
    InstallAgent,
    Finished,
    Uninstall
}

public class InstallerState
{
    [JsonPropertyName("step")]
    public WizardStep Step { get; set; } = WizardStep.Welcome;

    [JsonPropertyName("virtualEnvironmentInstalled")]
    public bool VirtualEnvironmentInstalled { get; set; }

    [JsonPropertyName("podmanInstalled")]
    public bool PodmanInstalled { get; set; }

    [JsonPropertyName("podmanConfigured")]
    public bool PodmanConfigured { get; set; }

    [JsonPropertyName("agentInstalled")]
    public bool AgentInstalled { get; set; }

    private static string StateFilePath
    {
        get
        {
            var dir = Path.Combine(
                Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData),
                "studioE5",
                "installer");
            Directory.CreateDirectory(dir);
            return Path.Combine(dir, "installer-state.json");
        }
    }

    public static InstallerState Load()
    {
        var path = StateFilePath;
        if (!File.Exists(path))
            return new InstallerState();

        try
        {
            var json = File.ReadAllText(path);
            return JsonSerializer.Deserialize<InstallerState>(json) ?? new InstallerState();
        }
        catch
        {
            return new InstallerState();
        }
    }

    public void Save()
    {
        var json = JsonSerializer.Serialize(this, new JsonSerializerOptions { WriteIndented = true });
        File.WriteAllText(StateFilePath, json);
    }

    public static void Delete()
    {
        var path = StateFilePath;
        if (File.Exists(path))
            File.Delete(path);
    }
}