using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Authorization;
using ToolHub.Models;
using ToolHub.Services;

namespace ToolHub.Controllers;

[Authorize(Roles = "Admin")]
public class ToolController : Controller
{
    private readonly IToolService _toolService;
    private readonly IFreeSql _freeSql;

    public ToolController(IToolService toolService, IFreeSql freeSql)
    {
        _toolService = toolService;
        _freeSql = freeSql;
    }

    // 工具管理页面
    public async Task<IActionResult> Index(int page = 1, int categoryId = 0)
    {
        ViewBag.Categories = await _toolService.GetCategoriesAsync();
        ViewBag.CurrentCategory = categoryId;
        ViewBag.CurrentPage = page;

        var pageSize = 20;
        var tools = await _toolService.GetToolsByCategoryAsync(categoryId, page, pageSize,true);
        
        // 获取总数用于分页
        var totalCount = await GetToolsCountAsync(categoryId);
        var totalPages = (int)Math.Ceiling((double)totalCount / pageSize);
        
        ViewBag.TotalCount = totalCount;
        ViewBag.TotalPages = totalPages;
        ViewBag.PageSize = pageSize;
        
        return View(tools);
    }

    // 获取工具总数
    private async Task<int> GetToolsCountAsync(int categoryId = 0)
    {
        var query = _freeSql.Select<Tool>().Where(t => t.IsActive);
        
        if (categoryId > 0)
        {
            query = query.Where(t => t.CategoryId == categoryId);
        }
        
        return (int)await query.CountAsync();
    }

    // 获取分页工具列表（AJAX）
    [HttpGet]
    public async Task<IActionResult> GetTools(int page = 1, int categoryId = 0, string search = "")
    {
        try
        {
            var pageSize = 20;
            List<Tool> tools;
            int totalCount;
            
            if (!string.IsNullOrEmpty(search))
            {
                tools = await _toolService.SearchToolsAsync(search, page, pageSize);
                totalCount = (int)await _freeSql.Select<Tool>()
                    .Where(t => t.IsActive && (t.Name.Contains(search) || t.Description!.Contains(search)))
                    .CountAsync();
            }
            else
            {
                tools = await _toolService.GetToolsByCategoryAsync(categoryId, page, pageSize);
                totalCount = await GetToolsCountAsync(categoryId);
            }
            
            var totalPages = (int)Math.Ceiling((double)totalCount / pageSize);
            
            return Json(new
            {
                tools = tools,
                pagination = new
                {
                    currentPage = page,
                    totalPages = totalPages,
                    totalCount = totalCount,
                    pageSize = pageSize,
                    hasNext = page < totalPages,
                    hasPrev = page > 1
                }
            });
        }
        catch
        {
            return Json(new { success = false, message = "获取工具列表失败" });
        }
    }

    // 获取所有工具列表（用于统计页面）
    [HttpGet]
    public async Task<IActionResult> GetAllTools()
    {
        try
        {
            var tools = await _freeSql.Select<Tool>()
                .Where(t => t.IsActive)
                .OrderBy(t => t.Name)
                .ToListAsync();
            
            return Json(new { success = true, tools = tools });
        }
        catch
        {
            return Json(new { success = false, message = "获取工具列表失败" });
        }
    }

    // 获取单个工具信息
    [HttpGet]
    public async Task<IActionResult> Get(int id)
    {
        try
        {
            var tool = await _freeSql.Select<Tool>()
                .Where(t => t.Id == id)
                .FirstAsync();
            
            if (tool == null)
                return NotFound();
                
            return Json(tool);
        }
        catch
        {
            return StatusCode(500);
        }
    }

    // 保存工具（添加/编辑）
    [HttpPost]
    public async Task<IActionResult> Save([FromBody] ToolDto toolDto)
    {
        try
        {
            if (toolDto.Id == 0)
            {
                // 添加新工具
                var tool = new Tool
                {
                    Name = toolDto.Name,
                    Description = toolDto.Description,
                    Icon = toolDto.Icon,
                    Image = toolDto.Image,
                    Url = toolDto.Url,
                    CategoryId = toolDto.CategoryId,
                    IsHot = toolDto.IsHot,
                    IsNew = toolDto.IsNew,
                    IsRecommended = toolDto.IsRecommended,
                    SortOrder = toolDto.SortOrder,
                    IsActive = true
                };
                await _freeSql.Insert(tool).ExecuteAffrowsAsync();
            }
            else
            {
                // 更新工具
                await _freeSql.Update<Tool>()
                    .Where(t => t.Id == toolDto.Id)
                    .Set(t => t.Name, toolDto.Name)
                    .Set(t => t.Description, toolDto.Description)
                    .Set(t => t.Icon, toolDto.Icon)
                    .Set(t => t.Image, toolDto.Image)
                    .Set(t => t.Url, toolDto.Url)
                    .Set(t => t.CategoryId, toolDto.CategoryId)
                    .Set(t => t.IsHot, toolDto.IsHot)
                    .Set(t => t.IsNew, toolDto.IsNew)
                    .Set(t => t.IsRecommended, toolDto.IsRecommended)
                    .Set(t => t.SortOrder, toolDto.SortOrder)
                    .Set(t => t.UpdatedAt, DateTime.Now)
                    .ExecuteAffrowsAsync();
            }
            return Json(new { success = true });
        }
        catch
        {
            return Json(new { success = false });
        }
    }

    // 删除工具
    [HttpPost]
    public async Task<IActionResult> Delete([FromBody] DeleteToolRequest request)
    {
        try
        {
            var result = await _toolService.DeleteToolAsync(request.Id);
            return Json(new { success = result });
        }
        catch
        {
            return Json(new { success = false });
        }
    }

    // 切换工具状态
    [HttpPost]
    public async Task<IActionResult> ToggleStatus([FromBody] ToggleToolStatusRequest request)
    {
        try
        {
            await _freeSql.Update<Tool>()
                .Where(t => t.Id == request.Id)
                .Set(t => t.IsActive, request.IsActive)
                .Set(t => t.UpdatedAt, DateTime.Now)
                .ExecuteAffrowsAsync();
            return Json(new { success = true });
        }
        catch
        {
            return Json(new { success = false });
        }
    }

    // 更新工具标志
    [HttpPost]
    public async Task<IActionResult> UpdateFlags([FromBody] UpdateToolFlagsRequest request)
    {
        try
        {
            await _freeSql.Update<Tool>()
                .Where(t => t.Id == request.Id)
                .Set(t => t.IsHot, request.IsHot)
                .Set(t => t.IsNew, request.IsNew)
                .Set(t => t.IsRecommended, request.IsRecommended)
                .Set(t => t.UpdatedAt, DateTime.Now)
                .ExecuteAffrowsAsync();
            return Json(new { success = true });
        }
        catch
        {
            return Json(new { success = false });
        }
    }

    // 初始化图片压缩工具
    [HttpGet]
    public async Task<IActionResult> InitImageCompressor()
    {
        try
        {
            // 检查是否已存在图片压缩工具
            var existingTool = await _freeSql.Select<Tool>()
                .Where(t => t.Name == "图片压缩工具" || t.Url!.Contains("/Tools/ImageCompressor"))
                .FirstAsync();
            
            if (existingTool != null)
            {
                return Json(new { success = false, message = "图片压缩工具已存在" });
            }
            
            // 查找或创建图像处理分类
            var category = await _freeSql.Select<Category>()
                .Where(c => c.Name == "图像处理" || c.Name == "图片工具")
                .FirstAsync();
            
            if (category == null)
            {
                // 创建图像处理分类
                category = new Category
                {
                    Name = "图像处理",
                    Description = "图片处理、编辑、转换等相关工具",
                    Icon = "fas fa-image",
                    Color = "#FF6B35",
                    SortOrder = 3,
                    IsActive = true,
                    CreatedAt = DateTime.Now
                };
                var categoryId = await _freeSql.Insert(category).ExecuteIdentityAsync();
                category.Id = (int)categoryId;
            }
            
            // 添加图片压缩工具
            var tool = new Tool
            {
                Name = "图片压缩工具",
                Description = "快速压缩图片文件，支持JPG、PNG、WebP等格式，保持高质量的同时大幅减小文件体积",
                Icon = "fas fa-compress-alt",
                Image = "",
                Url = "/Tools/ImageCompressor",
                CategoryId = category.Id,
                IsHot = true,
                IsNew = true,
                IsRecommended = true,
                IsActive = true,
                SortOrder = 1,
                ViewCount = 0,
                CreatedAt = DateTime.Now
            };
            
            await _freeSql.Insert(tool).ExecuteAffrowsAsync();
            
            return Json(new { success = true, message = "图片压缩工具初始化成功" });
        }
        catch (Exception ex)
        {
            return Json(new { success = false, message = ex.Message });
        }
    }
}

// DTOs
public class ToolDto
{
    public int Id { get; set; }
    public string Name { get; set; } = string.Empty;
    public string? Description { get; set; }
    public string? Icon { get; set; }
    public string? Image { get; set; }
    public string? Url { get; set; }
    public int CategoryId { get; set; }
    public bool IsHot { get; set; }
    public bool IsNew { get; set; }
    public bool IsRecommended { get; set; }
    public int SortOrder { get; set; }
}

public class DeleteToolRequest
{
    public int Id { get; set; }
}

public class ToggleToolStatusRequest
{
    public int Id { get; set; }
    public bool IsActive { get; set; }
}

public class UpdateToolFlagsRequest
{
    public int Id { get; set; }
    public bool IsHot { get; set; }
    public bool IsNew { get; set; }
    public bool IsRecommended { get; set; }
}