package handler

import (
	"dianshang/internal/model"
	"dianshang/internal/service"
	"dianshang/pkg/response"
	"github.com/gin-gonic/gin"
	"strconv"
)

// PlatformHandler 平台处理器
type PlatformHandler struct {
	platformService *service.PlatformService
}

// NewPlatformHandler 创建平台处理器
func NewPlatformHandler(platformService *service.PlatformService) *PlatformHandler {
	return &PlatformHandler{
		platformService: platformService,
	}
}

// GetPlatforms 获取平台列表
func (h *PlatformHandler) GetPlatforms(c *gin.Context) {
	page, _ := strconv.Atoi(c.DefaultQuery("page", "1"))
	pageSize, _ := strconv.Atoi(c.DefaultQuery("page_size", "10"))
	name := c.Query("name")
	
	var status *int
	if statusStr := c.Query("status"); statusStr != "" {
		if s, err := strconv.Atoi(statusStr); err == nil {
			status = &s
		}
	}

	platforms, pagination, err := h.platformService.GetPlatformList(page, pageSize, status, name)
	if err != nil {
		response.ErrorWithMessage(c, response.ERROR, err.Error())
		return
	}

	if pagination != nil {
		response.Page(c, platforms, pagination.Total, pagination.Page, pagination.PageSize)
	} else {
		response.Success(c, platforms)
	}
}

// GetPlatform 获取平台详情
func (h *PlatformHandler) GetPlatform(c *gin.Context) {
	id, err := strconv.ParseUint(c.Param("id"), 10, 32)
	if err != nil {
		response.ErrorWithMessage(c, response.ERROR_INVALID_PARAMS, "无效的平台ID")
		return
	}

	platform, err := h.platformService.GetPlatformByID(uint(id))
	if err != nil {
		response.ErrorWithMessage(c, response.ERROR, err.Error())
		return
	}

	response.Success(c, platform)
}

// CreatePlatform 创建平台
func (h *PlatformHandler) CreatePlatform(c *gin.Context) {
	var platform model.Platform
	if err := c.ShouldBindJSON(&platform); err != nil {
		response.ErrorWithMessage(c, response.ERROR_INVALID_PARAMS, err.Error())
		return
	}

	// 验证必填字段
	if platform.Code == "" {
		response.ErrorWithMessage(c, response.ERROR_INVALID_PARAMS, "平台代码不能为空")
		return
	}
	if platform.Name == "" {
		response.ErrorWithMessage(c, response.ERROR_INVALID_PARAMS, "平台名称不能为空")
		return
	}

	if err := h.platformService.CreatePlatform(&platform); err != nil {
		response.ErrorWithMessage(c, response.ERROR, err.Error())
		return
	}

	response.Success(c, platform)
}

// UpdatePlatform 更新平台
func (h *PlatformHandler) UpdatePlatform(c *gin.Context) {
	id, err := strconv.ParseUint(c.Param("id"), 10, 32)
	if err != nil {
		response.ErrorWithMessage(c, response.ERROR_INVALID_PARAMS, "无效的平台ID")
		return
	}

	var updates map[string]interface{}
	if err := c.ShouldBindJSON(&updates); err != nil {
		response.ErrorWithMessage(c, response.ERROR_INVALID_PARAMS, err.Error())
		return
	}

	if err := h.platformService.UpdatePlatform(uint(id), updates); err != nil {
		response.ErrorWithMessage(c, response.ERROR, err.Error())
		return
	}

	response.SuccessWithMessage(c, "平台更新成功", nil)
}

// DeletePlatform 删除平台
func (h *PlatformHandler) DeletePlatform(c *gin.Context) {
	id, err := strconv.ParseUint(c.Param("id"), 10, 32)
	if err != nil {
		response.ErrorWithMessage(c, response.ERROR_INVALID_PARAMS, "无效的平台ID")
		return
	}

	if err := h.platformService.DeletePlatform(uint(id)); err != nil {
		response.ErrorWithMessage(c, response.ERROR, err.Error())
		return
	}

	response.SuccessWithMessage(c, "平台删除成功", nil)
}

// GetAllActivePlatforms 获取所有启用的平台（用于下拉选择）
func (h *PlatformHandler) GetAllActivePlatforms(c *gin.Context) {
	platforms, err := h.platformService.GetAllActivePlatforms()
	if err != nil {
		response.ErrorWithMessage(c, response.ERROR, err.Error())
		return
	}

	response.Success(c, platforms)
}