using HanaToolbox.Config;
using Spectre.Console;

namespace HanaToolbox.Tui;

/// <summary>
/// TUI wizard for configuring cron task schedules and settings.
/// Saves results back to the provided AppConfig (caller is responsible for persisting).
/// </summary>
public sealed class CronSetupTui
{
    public AppConfig Run(AppConfig current)
    {
        AnsiConsole.Clear();
        AnsiConsole.Write(new Rule("[cyan]Cron Task Configuration[/]").RuleStyle("cyan"));
        AnsiConsole.MarkupLine("[grey]Configure which tasks run automatically and when.[/]\n");

        ConfigureBackup(current.Backup);
        ConfigureCleaner(current.Cleaner);
        ConfigureAurora(current.Aurora, current.Hana);
        ConfigureFirewall(current.Firewall);
        ConfigureMonitor(current.Monitor);

        return current;
    }

    private static void ConfigureBackup(BackupConfig b)
    {
        AnsiConsole.Write(new Rule("[green]Backup[/]").RuleStyle("green"));
        b.Enabled = AnsiConsole.Confirm("Enable scheduled backup?", b.Enabled);
        if (!b.Enabled) { AnsiConsole.WriteLine(); return; }

        b.ScheduleHour   = AnsiConsole.Prompt(new TextPrompt<int>("Run hour (0-23):").DefaultValue(b.ScheduleHour));
        b.ScheduleMinute = AnsiConsole.Prompt(new TextPrompt<int>("Run minute (0-59):").DefaultValue(b.ScheduleMinute));

        var typeStr = AnsiConsole.Prompt(
            new SelectionPrompt<string>()
                .Title("Backup type:")
                .AddChoices("All", "Tenant", "Schema")
                .HighlightStyle("cyan"));
        b.Type = Enum.Parse<BackupType>(typeStr);
        b.UserKey       = AnsiConsole.Prompt(new TextPrompt<string>("hdbuserstore key:").DefaultValue(b.UserKey));
        b.BackupBasePath = AnsiConsole.Prompt(new TextPrompt<string>("Tenant backup path:").DefaultValue(b.BackupBasePath));
        b.Compress      = AnsiConsole.Confirm("Compress tenant backup?", b.Compress);

        if (b.Type is BackupType.Schema or BackupType.All)
        {
            b.SchemaBackupPath = AnsiConsole.Prompt(new TextPrompt<string>("Schema backup path:").DefaultValue(b.SchemaBackupPath));
            b.CompressSchema   = AnsiConsole.Confirm("Compress schema backup?", b.CompressSchema);
            var schemas = AnsiConsole.Prompt(new TextPrompt<string>("Schema names (comma-separated):")
                .DefaultValue(string.Join(",", b.SchemaNames)));
            b.SchemaNames = schemas.Split(',', StringSplitOptions.RemoveEmptyEntries)
                                   .Select(s => s.Trim()).ToList();
        }

        b.BackupSystemDb = AnsiConsole.Confirm("Also backup SYSTEMDB?", b.BackupSystemDb);
        if (b.BackupSystemDb)
            b.SystemDbUserKey = AnsiConsole.Prompt(
                new TextPrompt<string>("SYSTEMDB hdbuserstore key:").DefaultValue(b.SystemDbUserKey));

        AnsiConsole.WriteLine();
    }

    private static void ConfigureCleaner(CleanerConfig c)
    {
        AnsiConsole.Write(new Rule("[green]Cleaner[/]").RuleStyle("green"));
        c.Enabled = AnsiConsole.Confirm("Enable scheduled cleanup?", c.Enabled);
        if (!c.Enabled) { AnsiConsole.WriteLine(); return; }

        c.ScheduleHour      = AnsiConsole.Prompt(new TextPrompt<int>("Run hour (0-23):").DefaultValue(c.ScheduleHour));
        c.ScheduleMinute    = AnsiConsole.Prompt(new TextPrompt<int>("Run minute (0-59):").DefaultValue(c.ScheduleMinute));
        c.TenantBackupPath  = AnsiConsole.Prompt(new TextPrompt<string>("Tenant backup path:").DefaultValue(c.TenantBackupPath));
        c.TenantRetentionDays = AnsiConsole.Prompt(new TextPrompt<int>("Tenant retention (days):").DefaultValue(c.TenantRetentionDays));
        c.LogRetentionDays  = AnsiConsole.Prompt(new TextPrompt<int>("Log backup retention (days):").DefaultValue(c.LogRetentionDays));

        AnsiConsole.MarkupLine("[grey]Current log backup paths:[/]");
        c.LogBackupPaths.ForEach(p => AnsiConsole.MarkupLine($"  [grey]- {p}[/]"));

        while (AnsiConsole.Confirm("Add a log backup path?", defaultValue: c.LogBackupPaths.Count == 0))
        {
            var p = AnsiConsole.Prompt(new TextPrompt<string>("Log backup path:"));
            if (!string.IsNullOrWhiteSpace(p)) c.LogBackupPaths.Add(p);
        }

        AnsiConsole.WriteLine();
    }

    private static void ConfigureAurora(AuroraConfig a, HanaConfig hana)
    {
        AnsiConsole.Write(new Rule("[green]Aurora[/]").RuleStyle("green"));
        a.Enabled = AnsiConsole.Confirm("Enable Aurora schema refresh?", a.Enabled);
        if (!a.Enabled) { AnsiConsole.WriteLine(); return; }

        a.ScheduleHour   = AnsiConsole.Prompt(new TextPrompt<int>("Run hour (0-23):").DefaultValue(a.ScheduleHour));
        a.ScheduleMinute = AnsiConsole.Prompt(new TextPrompt<int>("Run minute (0-59):").DefaultValue(a.ScheduleMinute));
        a.AdminUserKey   = AnsiConsole.Prompt(new TextPrompt<string>("Admin hdbuserstore key:").DefaultValue(a.AdminUserKey));
        a.SourceSchema   = AnsiConsole.Prompt(new TextPrompt<string>("Source schema name:").DefaultValue(a.SourceSchema));
        a.AuroraUser     = AnsiConsole.Prompt(new TextPrompt<string>("Aurora target user:").DefaultValue(a.AuroraUser));
        a.BackupBasePath = AnsiConsole.Prompt(new TextPrompt<string>("Temp export base path:").DefaultValue(a.BackupBasePath));
        AnsiConsole.WriteLine();
    }

    private static void ConfigureFirewall(FirewallConfig f)
    {
        AnsiConsole.Write(new Rule("[green]Firewall[/]").RuleStyle("green"));
        f.Enabled = AnsiConsole.Confirm("Enable scheduled firewall rule application?", f.Enabled);
        if (!f.Enabled) { AnsiConsole.WriteLine(); return; }

        f.ScheduleHour   = AnsiConsole.Prompt(new TextPrompt<int>("Run hour (0-23):").DefaultValue(f.ScheduleHour));
        f.ScheduleMinute = AnsiConsole.Prompt(new TextPrompt<int>("Run minute (0-59):").DefaultValue(f.ScheduleMinute));
        AnsiConsole.MarkupLine("[grey]Note: Firewall rules are configured via [cyan]hanatoolbox firewall[/][/]");
        AnsiConsole.WriteLine();
    }

    private static void ConfigureMonitor(MonitorConfig m)
    {
        AnsiConsole.Write(new Rule("[green]Monitor[/]").RuleStyle("green"));
        m.Enabled = AnsiConsole.Confirm("Enable monitor (runs every cron tick)?", m.Enabled);
        if (!m.Enabled) { AnsiConsole.WriteLine(); return; }

        m.HanaUserKey           = AnsiConsole.Prompt(new TextPrompt<string>("Monitor hdbuserstore key:").DefaultValue(m.HanaUserKey));
        m.CompanyName           = AnsiConsole.Prompt(new TextPrompt<string>("Company name (for alerts):").DefaultValue(m.CompanyName));
        m.SapcontrolPath        = AnsiConsole.Prompt(new TextPrompt<string>("sapcontrol path:").DefaultValue(m.SapcontrolPath));
        m.DiskUsageThresholdPercent = AnsiConsole.Prompt(new TextPrompt<int>("Disk usage alert threshold (%):").DefaultValue(m.DiskUsageThresholdPercent));
        m.BackupThresholdHours  = AnsiConsole.Prompt(new TextPrompt<int>("Max backup age (hours):").DefaultValue(m.BackupThresholdHours));

        AnsiConsole.MarkupLine("[grey]Current monitored directories:[/]");
        m.DirectoriesToMonitor.ForEach(d => AnsiConsole.MarkupLine($"  [grey]- {d}[/]"));
        while (AnsiConsole.Confirm("Add a directory to monitor?", defaultValue: false))
        {
            var d = AnsiConsole.Prompt(new TextPrompt<string>("Directory path:"));
            if (!string.IsNullOrWhiteSpace(d)) m.DirectoriesToMonitor.Add(d);
        }

        AnsiConsole.WriteLine();
    }
}