@page "/editor"
@using Katheryne.Exceptions
@using Katheryne.Abstractions
@using Frontend.Services
@inject NavigationManager Navigation
@inject IChatRobotFactory RobotFactory
@inject GrammarStorageService GrammarStorage

<Layout>
    <Content>
        <div class="editor-zone">
            <div class="control-zone">
                <Space Size="@("0")">
                    <SpaceItem>
                        <Tooltip Placement="@Placement.Bottom"
                                 Title="退出语法编辑器">
                            <Button Type="@ButtonType.Text" OnClick="@QuitButtonClicked">
                                退出
                            </Button>
                        </Tooltip>
                    </SpaceItem>

                    <SpaceItem>
                        <Tooltip Placement="@Placement.Bottom"
                                 Title="编译文法并保存在浏览器缓存中">
                            <Button Type="@ButtonType.Text" @onclick="@CompileGrammarClicked">
                                编译
                            </Button>
                        </Tooltip>
                    </SpaceItem>

                    <SpaceItem>
                        <Tooltip Placement="@Placement.Bottom"
                                 Title="清除浏览器缓存中的文法">
                            <Button Type="@ButtonType.Text" @onclick="@ClearGrammarClicked">
                                清除
                            </Button>
                        </Tooltip>
                    </SpaceItem>

                    <SpaceItem>
                        <Button Type="@ButtonType.Text" @onclick="HelpButtonClicked">
                            帮助
                        </Button>
                    </SpaceItem>
                </Space>
            </div>

            <StandaloneCodeEditor Id="code-editor" @ref="@_editor"
                                  ConstructionOptions="GetEditorConstructionOptions"/>

            <div class="logging-zone">
                <AntList TItem="@string" DataSource="@_logs" Split="@false" @ref="@_logList">
                    <ListItem Style="padding: 0 0 0">
                        <p class="logging-item">@context</p>
                    </ListItem>
                </AntList>
            </div>
        </div>
    </Content>
</Layout>

<GrammarHelp @ref="@_grammarHelp"/>

@code {
    private StandaloneCodeEditor _editor = null!;
    private AntList<string> _logList = null!;
    private GrammarHelp _grammarHelp = null!;

    private readonly List<string> _logs = new();

    protected override async Task OnAfterRenderAsync(bool firstRender)
    {
        if (firstRender)
        {
            Log("编辑器加载完成");
            if (await GrammarStorage.RestoreGrammar())
            {
                await _editor.SetValue(RobotFactory.GrammarText);
                Log("从浏览器中恢复成功");
            }
            else
            {
                Log("尚未设置语法");
            }
        }

        await base.OnAfterRenderAsync(firstRender);
    }

    private StandaloneEditorConstructionOptions GetEditorConstructionOptions(StandaloneCodeEditor editor)
    {
        return new StandaloneEditorConstructionOptions
        {
            Language = "yaml",
            Value = !string.IsNullOrEmpty(RobotFactory.GrammarText) ? RobotFactory.GrammarText : string.Empty
        };
    }

    private async Task CompileGrammarClicked()
    {
        string grammarText = await _editor.GetValue();

        try
        {
            Log("编译文法...");
            RobotFactory.SetGrammar(grammarText);
            Log("编译成功!");
            await GrammarStorage.StoreGrammar();
        }
        catch (GrammarException e)
        {
            Log($"编译文法遇到错误：{e.Message}");
        }
    }

    private void QuitButtonClicked()
    {
        Navigation.NavigateTo("/", replace: true);
    }

    private async Task ClearGrammarClicked()
    {
        await GrammarStorage.RemoveGrammar();
        Log("清除浏览器中的语法成功");
    }

    private void HelpButtonClicked()
    {
        _grammarHelp.Show();
    }

    private void Log(string message)
    {
        _logs.Add($"{DateTime.Now:HH:mm:ss} {message}");
        StateHasChanged();
    }
}