using AIStudio.Components;
using AIStudio.Tools.PluginSystem;

using Microsoft.AspNetCore.Components;

namespace AIStudio.Dialogs;

/// <summary>
/// Shows the details of a plugin on the plugins page: what its authors state about it, and whether an
/// organization manages it.
/// </summary>
/// <remarks>
/// The plugins page lists only the name, the version, and the description of a plugin. Everything else
/// a plugin states, such as its authors or where to get support, would otherwise only be found in its
/// code.
/// </remarks>
public partial class PluginInfoDialog : MSGComponentBase
{
    [CascadingParameter]
    private IMudDialogInstance MudDialog { get; set; } = null!;

    /// <summary>
    /// The plugin to show. The metadata alone would not do, because only an available plugin knows
    /// whether an organization manages it.
    /// </summary>
    [Parameter]
    public IAvailablePlugin Plugin { get; set; } = null!;

    private string TypeText => this.Plugin.Type.GetName();

    private string AuthorsText => this.Plugin.Authors.Length > 0 ? string.Join(", ", this.Plugin.Authors) : this.T("No authors specified");

    private string CategoriesText => this.Plugin.Categories.Length > 0 ? string.Join(", ", this.Plugin.Categories.Select(category => category.GetName())) : this.T("No categories specified");

    private string TargetGroupsText => this.Plugin.TargetGroups.Length > 0 ? string.Join(", ", this.Plugin.TargetGroups.Select(targetGroup => targetGroup.Name())) : this.T("No target groups specified");

    /// <summary>
    /// The plugin states the time in UTC; the user reads it in their own time zone.
    /// </summary>
    private string LastChangedText => this.Plugin.LastChanged?.ToLocalTime().ToString("g", I18N.I.Culture) ?? this.T("Not specified");

    private string SupportContactText => this.GetLinkText(this.Plugin.SupportContact);

    private string SourceText => this.GetLinkText(this.Plugin.SourceURL);

    /// <summary>
    /// The field SOURCE_URL holds a website, such as a repository or a wiki, or a mail address. The
    /// label and the icon of its row name which of both it is, since "source" would fit neither a wiki
    /// nor a mail address.
    /// </summary>
    private bool IsSourceAMail => PluginLinks.TryParse(this.Plugin.SourceURL, out var link) && PluginLinks.IsMail(link);

    private string SourceLabel => this.IsSourceAMail ? this.T("Email contact") : this.T("Related link");

    private string SourceIcon => this.IsSourceAMail ? Icons.Material.Filled.ContactMail : Icons.Material.Filled.Link;

    /// <summary>
    /// Shows a link the way the user recognizes it: a mail address without its scheme, and a placeholder
    /// of the Assistant Builder as not stated. A text which is no link stays as it is.
    /// </summary>
    private string GetLinkText(string text)
    {
        if (PluginLinks.IsPlaceholder(text))
            return this.T("Not specified");

        return PluginLinks.TryParse(text, out var link) ? PluginLinks.GetDisplayText(link) : text;
    }

    private void Close() => this.MudDialog.Close();
}