package controller

import (
	"context"
	"net/http"
	"strconv"

	"dubbo.apache.org/dubbo-go/v3/client"
	"dubbo.apache.org/dubbo-go/v3/common/constant"
	"github.com/gin-gonic/gin"
	"github.com/topfans/backend/gateway/pkg/response"
	"github.com/topfans/backend/pkg/logger"
	pbAsset "github.com/topfans/backend/pkg/proto/asset"
	"go.uber.org/zap"
)

// StarbookController 星册控制器
//
// ★ 批次 4.2 起,星册路由由 gateway → assetService 接管(原 starbookService 已删除)。
// GetMyAssets(home) 与 GetAssetsByType(items) 均由 asset.proto 生成的标准 AssetService client 提供。
type StarbookController struct {
	assetClient pbAsset.AssetService
}

// NewStarbookController 创建星册控制器
func NewStarbookController(assetClient *client.Client) (*StarbookController, error) {
	assetService, err := pbAsset.NewAssetService(assetClient)
	if err != nil {
		return nil, err
	}
	return &StarbookController{assetClient: assetService}, nil
}

// GetStarbookHome 获取星册首页
// @Summary 获取星册首页
// @Description 获取当前用户的星册首页数据(按类型和分组展示)
// @Tags starbook
// @Accept json
// @Produce json
// @Security BearerAuth
// @Success 200 {object} response.Response
// @Router /api/v1/starbook/home [get]
func (ctrl *StarbookController) GetStarbookHome(c *gin.Context) {
	userID, exists := c.Get("user_id")
	if !exists {
		response.Error(c, http.StatusUnauthorized, "未授权")
		return
	}
	starID, exists := c.Get("star_id")
	if !exists {
		response.Error(c, http.StatusUnauthorized, "未授权")
		return
	}

	// 设置 Dubbo attachments(供下游 provider 通过 ctx.Value(constant.AttachmentKey) 解析)
	ctx := context.WithValue(c.Request.Context(), constant.AttachmentKey, map[string]interface{}{
		"user_id": strconv.FormatInt(userID.(int64), 10),
		"star_id": strconv.FormatInt(starID.(int64), 10),
	})

	logger.Logger.Debug("Calling GetStarbookHome",
		zap.Int64("user_id", userID.(int64)),
		zap.Int64("star_id", starID.(int64)),
	)

	// 调用 assetService.GetMyAssets(分组后的全部藏品)
	// 响应形态 {base, data: AssetListData(groups, total, page, ...)} — 与旧 starbook HomeItems 一致
	resp, err := ctrl.assetClient.GetMyAssets(ctx, &pbAsset.GetMyAssetsRequest{})
	if err != nil {
		logger.Logger.Error("GetStarbookHome RPC failed",
			zap.Error(err),
			zap.Int64("user_id", userID.(int64)),
			zap.Int64("star_id", starID.(int64)),
		)
		response.Error(c, http.StatusInternalServerError, "获取星册首页失败: "+err.Error())
		return
	}

	response.Success(c, resp)
}

// GetStarbookItems 获取星册藏品列表
// @Summary 获取星册藏品列表
// @Description 按 type/category/grade 分页获取星册藏品
// @Tags starbook
// @Accept json
// @Produce json
// @Security BearerAuth
// @Param type query string true "资产类型: regular/collection/activity"
// @Param category query string false "子分类，regular 时固定为 castlove"
// @Param grade query int false "等级，仅 regular 类型有效"
// @Param page query int false "页码，默认1"
// @Param page_size query int false "每页数量，默认20"
// @Success 200 {object} response.Response
// @Router /api/v1/starbook/items [get]
func (ctrl *StarbookController) GetStarbookItems(c *gin.Context) {
	userID, exists := c.Get("user_id")
	if !exists {
		response.Error(c, http.StatusUnauthorized, "未授权")
		return
	}
	starID, exists := c.Get("star_id")
	if !exists {
		response.Error(c, http.StatusUnauthorized, "未授权")
		return
	}

	assetType := c.Query("type")
	if assetType == "" {
		response.Error(c, http.StatusBadRequest, "type 参数不能为空")
		return
	}

	category := c.DefaultQuery("category", "castlove")
	grade, _ := strconv.Atoi(c.DefaultQuery("grade", "0"))
	page, _ := strconv.Atoi(c.DefaultQuery("page", "1"))
	pageSize, _ := strconv.Atoi(c.DefaultQuery("page_size", "20"))

	ctx := context.WithValue(c.Request.Context(), constant.AttachmentKey, map[string]interface{}{
		"user_id": strconv.FormatInt(userID.(int64), 10),
		"star_id": strconv.FormatInt(starID.(int64), 10),
	})

	req := &pbAsset.GetAssetsByTypeRequest{
		Type:     assetType,
		Category: category,
		Grade:    int32(grade),
		Page:     int32(page),
		PageSize: int32(pageSize),
	}

	logger.Logger.Debug("Calling GetStarbookItems",
		zap.Int64("user_id", userID.(int64)),
		zap.Int64("star_id", starID.(int64)),
		zap.String("type", assetType),
		zap.Int32("page", int32(page)),
	)

	resp, err := ctrl.assetClient.GetAssetsByType(ctx, req)
	if err != nil {
		logger.Logger.Error("GetStarbookItems RPC failed",
			zap.Error(err),
			zap.Int64("user_id", userID.(int64)),
			zap.Int64("star_id", starID.(int64)),
		)
		response.Error(c, http.StatusInternalServerError, "获取星册藏品列表失败: "+err.Error())
		return
	}

	response.Success(c, resp)
}