using AIStudio.Components;
using AIStudio.Agents.AssistantAudit;
using AIStudio.Dialogs;
using AIStudio.Settings.DataModel;
using AIStudio.Tools.PluginSystem.Assistants;
using AIStudio.Tools.PluginSystem;

using Microsoft.AspNetCore.Components;
using DialogOptions = AIStudio.Dialogs.DialogOptions;

namespace AIStudio.Pages;

public partial class Plugins : MSGComponentBase
{
    private const string GROUP_ENABLED = "Enabled";
    private const string GROUP_DISABLED = "Disabled";
    private const string GROUP_INTERNAL = "Internal";
    private bool isAutoAuditing;

    private DataAssistantPluginAudit AssistantPluginAuditSettings => this.SettingsManager.ConfigurationData.AssistantPluginAudit;
    
    private TableGroupDefinition<IPluginMetadata> groupConfig = null!;

    [Inject]
    private IDialogService DialogService { get; init; } = null!;

    [Inject]
    private AssistantPluginAuditService AssistantPluginAuditService { get; init; } = null!;

    #region Overrides of ComponentBase

    protected override async Task OnInitializedAsync()
    {
        this.ApplyFilters([], [ Event.PLUGINS_RELOADED ]);
        
        this.groupConfig = new TableGroupDefinition<IPluginMetadata>
        {
            Expandable = true,
            IsInitiallyExpanded = true,
            Selector = pluginMeta =>
            {
                if (pluginMeta.IsInternal)
                    return GROUP_INTERNAL;
                
                return this.SettingsManager.IsPluginEnabled(pluginMeta)
                    ? GROUP_ENABLED
                    : GROUP_DISABLED;
            }
        };
        
        await base.OnInitializedAsync();
    }

    protected override async Task OnAfterRenderAsync(bool firstRender)
    {
        if (firstRender)
            await this.TryAutoAuditAssistantsAsync();
    }

    #endregion

    private async Task PluginActivationStateChanged(IPluginMetadata pluginMeta)
    {
        if (this.SettingsManager.IsPluginEnabled(pluginMeta))
        {
            this.SettingsManager.ConfigurationData.EnabledPlugins.Remove(pluginMeta.Id);
            await this.SettingsManager.StoreSettings();
            await this.MessageBus.SendMessage<bool>(this, Event.CONFIGURATION_CHANGED);
            return;
        }

        if (pluginMeta.Type is not PluginType.ASSISTANT)
        {
            this.SettingsManager.ConfigurationData.EnabledPlugins.Add(pluginMeta.Id);
            await this.SettingsManager.StoreSettings();
            await this.MessageBus.SendMessage<bool>(this, Event.CONFIGURATION_CHANGED);
            return;
        }

        var assistantPlugin = PluginFactory.RunningPlugins.OfType<PluginAssistants>().FirstOrDefault(x => x.Id == pluginMeta.Id);
        if (assistantPlugin is null)
            return;

        var securityState = PluginAssistantSecurityResolver.Resolve(this.SettingsManager, assistantPlugin);
        if (securityState.RequiresAudit)
        {
            await this.OpenAssistantAuditDialogAsync(pluginMeta.Id);
            return;
        }

        if (securityState.IsBelowMinimum && securityState.IsBlocked)
        {
            var blockedAudit = securityState.Audit;
            if (blockedAudit is not null)
                await this.DialogService.ShowMessageBox(this.T("Assistant Audit"), $"{blockedAudit.Level.GetName()}: {blockedAudit.Summary}", this.T("Close"));
            return;
        }

        if (securityState.IsBelowMinimum && securityState.CanOverride &&
            !await this.ConfirmActivationBelowMinimumAsync(pluginMeta.Name, securityState.Audit!.Level))
        {
            return;
        }

        this.SettingsManager.ConfigurationData.EnabledPlugins.Add(pluginMeta.Id);
        await this.SettingsManager.StoreSettings();
        await this.MessageBus.SendMessage<bool>(this, Event.CONFIGURATION_CHANGED);
    }

    private async Task OpenAssistantAuditDialogAsync(Guid pluginId)
    {
        var parameters = new DialogParameters<AssistantPluginAuditDialog>
        {
            { x => x.PluginId, pluginId },
        };
        var dialog = await this.DialogService.ShowAsync<AssistantPluginAuditDialog>(this.T("Assistant Audit"), parameters, DialogOptions.FULLSCREEN);
        var result = await dialog.Result;
        if (result is null || result.Canceled || result.Data is not AssistantPluginAuditDialogResult auditResult)
            return;

        if (auditResult.Audit is not null)
            this.UpsertAuditCard(auditResult.Audit);

        if (auditResult.ActivatePlugin)
            this.SettingsManager.ConfigurationData.EnabledPlugins.Add(pluginId);

        await this.SettingsManager.StoreSettings();
        await this.MessageBus.SendMessage<bool>(this, Event.CONFIGURATION_CHANGED);
    }

    private async Task<bool> ConfirmActivationBelowMinimumAsync(string pluginName, AssistantAuditLevel actualLevel)
    {
        var dialogParameters = new DialogParameters<ConfirmDialog>
        {
            {
                x => x.Message,
                string.Format(
                    this.T("The assistant plugin \"{0}\" was audited with the level \"{1}\", which is below the required minimum level \"{2}\". Your current settings allow activation anyway, but this may be potentially dangerous. Do you really want to enable this plugin?"),
                    pluginName,
                    actualLevel.GetName(),
                    this.AssistantPluginAuditSettings.MinimumLevel.GetName())
            },
        };

        var dialogReference = await this.DialogService.ShowAsync<ConfirmDialog>(this.T("Potentially Dangerous Plugin"), dialogParameters,
            DialogOptions.FULLSCREEN);
        var dialogResult = await dialogReference.Result;
        return dialogResult is not null && !dialogResult.Canceled;
    }
    
    private bool IsActivationSwitchDisabled(IPluginMetadata pluginMeta, bool isEnabled)
    {
        if (isEnabled || pluginMeta.Type is not PluginType.ASSISTANT)
            return false;

        var assistantPlugin = this.TryGetAssistantPlugin(pluginMeta.Id);
        if (assistantPlugin is null)
            return false;

        var securityState = PluginAssistantSecurityResolver.Resolve(this.SettingsManager, assistantPlugin);
        return securityState.IsBlocked && !securityState.RequiresAudit;
    }

    private string GetActivationTooltip(IPluginMetadata pluginMeta, bool isEnabled)
    {
        if (isEnabled)
            return this.T("Disable plugin");

        if (pluginMeta.Type is not PluginType.ASSISTANT)
            return this.T("Enable plugin");

        var assistantPlugin = this.TryGetAssistantPlugin(pluginMeta.Id);
        if (assistantPlugin is null)
            return this.T("Enable plugin");

        var securityState = PluginAssistantSecurityResolver.Resolve(this.SettingsManager, assistantPlugin);
        if (securityState.RequiresAudit)
            return securityState.ActionLabel;

        return securityState.IsBlocked
            ? securityState.Description
            : this.T("Enable plugin");
    }

    private static bool IsSendingMail(string sourceUrl) => sourceUrl.TrimStart().StartsWith("mailto:", StringComparison.OrdinalIgnoreCase);

    private PluginAssistants? TryGetAssistantPlugin(Guid pluginId) => PluginFactory.RunningPlugins.OfType<PluginAssistants>().FirstOrDefault(x => x.Id == pluginId);

    private async Task TryAutoAuditAssistantsAsync()
    {
        if (this.isAutoAuditing || !this.AssistantPluginAuditSettings.AutomaticallyAuditAssistants)
            return;

        this.isAutoAuditing = true;

        try
        {
            var wasConfigurationChanged = false;
            var assistantPlugins = PluginFactory.RunningPlugins.OfType<PluginAssistants>().ToList();
            foreach (var assistantPlugin in assistantPlugins)
            {
                var securityState = PluginAssistantSecurityResolver.Resolve(this.SettingsManager, assistantPlugin);
                if (!securityState.RequiresAudit)
                    continue;

                var audit = await this.AssistantPluginAuditService.RunAuditAsync(assistantPlugin);
                if (audit.Level is AssistantAuditLevel.UNKNOWN)
                {
                    await MessageBus.INSTANCE.SendError(new (Icons.Material.Filled.SettingsSuggest, string.Format(this.T("The automatic security audit for the assistant plugin '{0}' failed. Please run it manually."), assistantPlugin.Name)));
                    continue;
                }

                this.UpsertAuditCard(audit);
                wasConfigurationChanged = true;
            }

            if (!wasConfigurationChanged)
                return;

            await this.SettingsManager.StoreSettings();
            await this.MessageBus.SendMessage<bool>(this, Event.CONFIGURATION_CHANGED);
        }
        finally
        {
            this.isAutoAuditing = false;
            await this.InvokeAsync(this.StateHasChanged);
        }
    }

    private void UpsertAuditCard(PluginAssistantAudit audit)
    {
        var audits = this.SettingsManager.ConfigurationData.AssistantPluginAudits;
        var existingIndex = audits.FindIndex(x => x.PluginId == audit.PluginId);
        if (existingIndex >= 0)
            audits[existingIndex] = audit;
        else
            audits.Add(audit);
    }

    #region Overrides of MSGComponentBase

    protected override async Task ProcessIncomingMessage<T>(ComponentBase? sendingComponent, Event triggeredEvent, T? data) where T : default
    {
        switch (triggeredEvent)
        {
            case Event.PLUGINS_RELOADED:
                await this.TryAutoAuditAssistantsAsync();
                await this.InvokeAsync(this.StateHasChanged);
                break;

            case Event.CONFIGURATION_CHANGED:
                await this.InvokeAsync(this.StateHasChanged);
                break;
        }
    }

    #endregion
}