@namespace TelegramPanel.Web.Components.Dialogs
@using Microsoft.AspNetCore.Components
@using TelegramPanel.Web.Modules
@inject ModuleContributionRegistry Contributions

<MudDialog>
    <DialogContent>
        @if (!string.IsNullOrWhiteSpace(error))
        {
            <MudAlert Severity="Severity.Error" Variant="Variant.Outlined">@error</MudAlert>
        }
        else if (componentType == null)
        {
            <MudProgressCircular Indeterminate="true" />
        }
        else
        {
            <DynamicComponent Type="componentType" Parameters="parameters" />
        }
    </DialogContent>
    <DialogActions>
        <MudButton Variant="Variant.Text" Color="Color.Default" OnClick="Close">关闭</MudButton>
    </DialogActions>
</MudDialog>

@code
{
    [CascadingParameter] private MudDialogInstance MudDialog { get; set; } = default!;

    [Parameter] public string ModuleId { get; set; } = "";
    [Parameter] public string PageKey { get; set; } = "";

    private string? error;
    private Type? componentType;
    private Dictionary<string, object?> parameters = new();

    protected override void OnParametersSet()
    {
        error = null;
        componentType = null;
        parameters = new Dictionary<string, object?>();

        var moduleId = (ModuleId ?? "").Trim();
        var pageKey = (PageKey ?? "").Trim();
        if (moduleId.Length == 0 || pageKey.Length == 0)
        {
            error = "参数无效";
            return;
        }

        var page = Contributions.Pages.FirstOrDefault(p =>
            string.Equals(p.Module.Id, moduleId, StringComparison.OrdinalIgnoreCase)
            && string.Equals(p.Definition.Key, pageKey, StringComparison.OrdinalIgnoreCase));

        if (page == null)
        {
            error = $"未找到扩展页面：{moduleId}/{pageKey}";
            return;
        }

        var typeName = (page.Definition.ComponentType ?? "").Trim();
        if (typeName.Length == 0)
        {
            error = "模块页面未配置 componentType";
            return;
        }

        var moduleTypeName = NormalizeModuleTypeName(typeName);
        componentType =
            Type.GetType(typeName, throwOnError: false, ignoreCase: false)
            ?? page.Module.Instance.GetType().Assembly.GetType(moduleTypeName, throwOnError: false, ignoreCase: false);

        if (componentType == null)
        {
            error = $"无法加载组件类型：{typeName}";
            return;
        }

        parameters = new Dictionary<string, object?>
        {
            ["ModuleId"] = moduleId,
            ["PageKey"] = pageKey
        };
    }

    private static string NormalizeModuleTypeName(string typeName)
    {
        typeName = (typeName ?? "").Trim();
        if (typeName.Length == 0)
            return typeName;

        var comma = typeName.IndexOf(',', StringComparison.Ordinal);
        if (comma > 0)
            return typeName.Substring(0, comma).Trim();

        return typeName;
    }

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