@page "/"
@using CodePlay.Core.Models
@using CodePlay.Core.Common
@using CodePlay.Core.Services
@inject ConversionService ConversionService
@inject ILogger<Program> Logger

<PageTitle>CodePlay - 代码转换器</PageTitle>

<div class="container-fluid">
    <div class="row">
        <h1 class="mt-4 mb-4">CodePlay 代码转换平台</h1>
    </div>
    
    <div class="row">
        <div class="col-md-12">
            <div class="card">
                <div class="card-header">
                    <h4>代码转换</h4>
                </div>
                <div class="card-body">
                    @if (isLoading)
                    {
                        <div class="alert alert-info" role="alert">
                            <div class="spinner-border spinner-border-sm" role="status">
                                <span class="visually-hidden">Loading...</span>
                            </div>
                            正在转换中...
                        </div>
                    }
                    
                    @if (!string.IsNullOrEmpty(errorMessage))
                    {
                        <div class="alert alert-danger alert-dismissible fade show" role="alert">
                            <strong>错误:</strong> @errorMessage
                            <button type="button" class="btn-close" data-bs-dismiss="alert" aria-label="Close"></button>
                        </div>
                    }
                    
                    @if (conversionResult != null && conversionResult.Success)
                    {
                        <div class="alert alert-success" role="alert">
                            <strong>转换成功!</strong> 
                            转换行数：@conversionResult.Report?.LinesConverted, 
                            类数量：@conversionResult.Report?.ClassesConverted, 
                            方法数量：@conversionResult.Report?.MethodsConverted
                        </div>
                    }
                    
                    <div class="row">
                        <div class="col-md-4">
                            <div class="mb-3">
                                <label class="form-label">源代码</label>
                                <textarea class="form-control" rows="15" @bind="sourceCode" placeholder="在这里输入源代码..."></textarea>
                            </div>
                            <div class="mb-3">
                                <label class="form-label">源语言</label>
                                <select class="form-select" @bind="sourceLanguage">
                                    <option value="@((int)LanguageType.CSharp)">C#</option>
                                    <option value="@((int)LanguageType.Java)">Java</option>
                                </select>
                            </div>
                        </div>
                        
                        <div class="col-md-4">
                            <div class="mb-3">
                                <label class="form-label">目标语言</label>
                                <select class="form-select" @bind="targetLanguage">
                                    <option value="@((int)LanguageType.Java)">Java</option>
                                    <option value="@((int)LanguageType.CSharp)">C#</option>
                                </select>
                            </div>
                            
                            <div class="mb-3">
                                <label class="form-label">验证轮次</label>
                                <select class="form-select" @bind="validationRounds">
                                    <option value="1">1 轮</option>
                                    <option value="2">2 轮</option>
                                    <option value="3">3 轮</option>
                                </select>
                            </div>
                        </div>
                        
                        <div class="col-md-4">
                            <div class="mb-3">
                                <label class="form-label">转换后代码</label>
                                <textarea class="form-control" rows="15" readonly>@transformedCode</textarea>
                            </div>
                        </div>
                    </div>
                    
                    <div class="row mt-3">
                        <div class="col-md-12">
                            <button class="btn btn-primary" @onclick="ConvertAsync" disabled="@isLoading">
                                <span class="spinner-border spinner-border-sm" role="status" aria-hidden="true" style="display: @Convert.ToString(isLoading ? "inline-block" : "none")"></span>
                                转换
                            </button>
                            <button class="btn btn-secondary ms-2" @onclick="Clear" disabled="@isLoading">清除</button>
                            <button class="btn btn-outline-primary ms-2" @onclick="CopyToClipboard" disabled="@string.IsNullOrEmpty(transformedCode)">复制结果</button>
                        </div>
                    </div>
                    
                    @if (conversionResult != null && conversionResult.Success && 
                        (conversionResult.Report?.TodoItems.Count > 0 || conversionResult.Report?.Issues.Count > 0))
                    {
                        <div class="row mt-4">
                            <div class="col-md-12">
                                <div class="card border-warning">
                                    <div class="card-header bg-warning text-dark">
                                        <h5>需要注意的事项</h5>
                                    </div>
                                    <div class="card-body">
                                        @if (conversionResult.Report?.TodoItems.Count > 0)
                                        {
                                            <h6>TODO 列表</h6>
                                            <ul>
                                                @foreach (var todo in conversionResult.Report.TodoItems)
                                                {
                                                    <li>
                                                        <strong>@todo.Description</strong><br/>
                                                        <small>原因：@todo.WhyNotDirect</small><br/>
                                                        <small>建议：@todo.RecommendedAlternative</small>
                                                    </li>
                                                }
                                            </ul>
                                        }
                                        
                                        @if (conversionResult.Report?.Issues.Count > 0)
                                        {
                                            <h6>问题列表</h6>
                                            <ul>
                                                @foreach (var issue in conversionResult.Report.Issues)
                                                {
                                                    <li>
                                                        <strong>@issue.Description</strong><br/>
                                                        <small>建议：@issue.Suggestion</small>
                                                    </li>
                                                }
                                            </ul>
                                        }
                                    </div>
                                </div>
                            </div>
                        </div>
                    }
                </div>
            </div>
        </div>
    </div>
</div>

@code {
    private string sourceCode = string.Empty;
    private string transformedCode = string.Empty;
    private LanguageType sourceLanguage = LanguageType.CSharp;
    private LanguageType targetLanguage = LanguageType.Java;
    private int validationRounds = 2;
    private bool isLoading = false;
    private string? errorMessage;
    private ConversionResult? conversionResult;
    
    private async Task ConvertAsync()
    {
        if (string.IsNullOrWhiteSpace(sourceCode))
        {
            errorMessage = "请输入源代码";
            return;
        }
        
        isLoading = true;
        errorMessage = null;
        transformedCode = string.Empty;
        conversionResult = null;
        
        try
        {
            var request = new ConversionRequest
            {
                SourceLanguage = sourceLanguage.ToString(),
                TargetLanguage = targetLanguage.ToString(),
                SourceCode = sourceCode,
                ValidationRounds = validationRounds,
                Options = new ConversionOptions
                {
                    KeepComments = true,
                    KeepDocStrings = true
                }
            };
            
            conversionResult = await ConversionService.ConvertAsync(request);
            
            if (conversionResult.Success)
            {
                transformedCode = conversionResult.TransformedCode;
            }
            else
            {
                errorMessage = conversionResult.ErrorMessage ?? "转换失败";
            }
        }
        catch (Exception ex)
        {
            Logger.LogError(ex, "转换过程中发生错误");
            errorMessage = $"转换失败：{ex.Message}";
        }
        finally
        {
            isLoading = false;
        }
    }
    
    private void Clear()
    {
        sourceCode = string.Empty;
        transformedCode = string.Empty;
        errorMessage = null;
        conversionResult = null;
    }
    
    private async Task CopyToClipboard()
    {
        await Task.CompletedTask;
    }
}