using HanaToolbox.Config;
using HanaToolbox.Logging;
using HanaToolbox.Services;
using HanaToolbox.Services.Interfaces;
using Spectre.Console;

namespace HanaToolbox.Tui;

/// <summary>
/// Full guided onboarding wizard.
/// Walks through every setting, creates hdbuserstore keys, and writes hanatoolbox.json.
/// </summary>
public sealed class OnboardTui(
    KeyManagerTui keyManagerTui,
    CronSetupTui cronSetupTui,
    FirewallTui firewallTui,
    AppLogger _logger)
{
    public async Task RunAsync(CancellationToken ct = default)
    {
        AnsiConsole.Clear();
        AnsiConsole.Write(new FigletText("HanaToolbox").Color(Color.Cyan1));
        AnsiConsole.Write(new Rule("[cyan]Initial Setup Wizard[/]").RuleStyle("cyan"));
        AnsiConsole.MarkupLine("[grey]This wizard will configure HanaToolbox for this system.[/]\n");

        // Root check
        if (Environment.UserName != "root")
        {
            AnsiConsole.MarkupLine("[red]Warning: Not running as root. Some operations may fail.[/]");
            if (!AnsiConsole.Confirm("Continue anyway?", defaultValue: false)) return;
        }

        var config = ConfigService.Exists() ? ConfigService.Load() : new AppConfig();

        // Step 1: HANA global settings
        AnsiConsole.Write(new Rule("[blue]Step 1 of 7 — HANA Settings[/]").RuleStyle("blue"));
        config.Hana.Sid            = AnsiConsole.Prompt(new TextPrompt<string>("HANA SID:").DefaultValue(config.Hana.Sid));
        config.Hana.InstanceNumber = AnsiConsole.Prompt(new TextPrompt<string>("Instance number:").DefaultValue(config.Hana.InstanceNumber));
        AnsiConsole.WriteLine();

        // Step 2: hdbuserstore keys
        AnsiConsole.Write(new Rule("[blue]Step 2 of 7 — Key Manager[/]").RuleStyle("blue"));
        AnsiConsole.MarkupLine("[grey]Set up hdbuserstore keys needed for automated operations.[/]");
        if (AnsiConsole.Confirm("Open Key Manager now?", defaultValue: true))
            await keyManagerTui.RunAsync(config.Hana, config.Hana.Sid, ct);
        AnsiConsole.WriteLine();

        // Step 3: Cron tasks
        AnsiConsole.Write(new Rule("[blue]Step 3 of 7 — Cron Task Settings[/]").RuleStyle("blue"));
        config = cronSetupTui.Run(config);

        // Step 4: Firewall
        AnsiConsole.Write(new Rule("[blue]Step 4 of 7 — Firewall[/]").RuleStyle("blue"));
        if (AnsiConsole.Confirm("Configure firewall rules now?", defaultValue: true))
        {
            var updated = await firewallTui.RunAsync(config.Firewall, ct);
            if (updated != null) config.Firewall = updated;
        }
        AnsiConsole.WriteLine();

        // Step 5: Binary paths (optional overrides)
        AnsiConsole.Write(new Rule("[blue]Step 5 of 7 — Binary Paths (optional)[/]").RuleStyle("blue"));
        AnsiConsole.MarkupLine("[grey]Leave empty to use auto-detection (which, /usr/sap/hdbclient, etc.)[/]");
        var hdbsqlOverride = AnsiConsole.Prompt(
            new TextPrompt<string>("hdbsql path override (empty = auto):").AllowEmpty().DefaultValue(""));
        var hdbusOverride = AnsiConsole.Prompt(
            new TextPrompt<string>("hdbuserstore path override (empty = auto):").AllowEmpty().DefaultValue(""));
        if (!string.IsNullOrWhiteSpace(hdbsqlOverride)) config.Hana.HdbsqlPath = hdbsqlOverride;
        if (!string.IsNullOrWhiteSpace(hdbusOverride))  config.Hana.HdbuserstorePath = hdbusOverride;
        AnsiConsole.WriteLine();

        // Step 6: ntfy notifications
        AnsiConsole.Write(new Rule("[blue]Step 6 of 7 — Notifications (ntfy)[/]").RuleStyle("blue"));
        AnsiConsole.MarkupLine("[grey]HanaToolbox sends alerts via ntfy.sh (or a self-hosted ntfy server).[/]");
        AnsiConsole.MarkupLine("[grey]Leave the token empty to disable notifications.[/]");
        AnsiConsole.WriteLine();

        config.Ntfy.Url = AnsiConsole.Prompt(
            new TextPrompt<string>("ntfy server URL (topic included):")
                .DefaultValue(config.Ntfy.Url));

        config.Ntfy.Token = AnsiConsole.Prompt(
            new TextPrompt<string>("ntfy access token (empty = no auth):")
                .Secret()
                .AllowEmpty()
                .DefaultValue(string.IsNullOrWhiteSpace(config.Ntfy.Token) ? string.Empty : "(existing)"));

        // If user accepted "(existing)" prompt without typing, keep the real token
        if (config.Ntfy.Token == "(existing)")
            config.Ntfy.Token = ConfigService.Exists() ? ConfigService.Load().Ntfy.Token : string.Empty;

        AnsiConsole.WriteLine();

        // Step 7: Save
        AnsiConsole.Write(new Rule("[blue]Step 7 of 7 — Finalize[/]").RuleStyle("blue"));

        var crontabLine = $"* * * * * root /usr/local/bin/hanatoolbox cron";
        AnsiConsole.MarkupLine("[grey]Add the following line to your system crontab ([cyan]/etc/crontab[/] or [cyan]/etc/cron.d/hanatoolbox[/]):[/]");
        AnsiConsole.MarkupLine($"[cyan]{crontabLine}[/]");
        AnsiConsole.WriteLine();

        if (!AnsiConsole.Confirm("Save configuration to /etc/hanatoolbox/hanatoolbox.json?", defaultValue: true))
        {
            AnsiConsole.MarkupLine("[yellow]Aborted. No changes saved.[/]");
            return;
        }

        ConfigService.Save(config);
        AnsiConsole.MarkupLine("[green]✅ Configuration saved successfully![/]");
        AnsiConsole.MarkupLine($"[grey]Config file: /etc/hanatoolbox/hanatoolbox.json[/]");
    }
}