package user

import (
	"context"

	"github.com/perfect-panel/server/internal/model/user"
	"github.com/perfect-panel/server/internal/svc"
	"github.com/perfect-panel/server/internal/types"
	"github.com/perfect-panel/server/pkg/constant"
	"github.com/perfect-panel/server/pkg/logger"
	"github.com/perfect-panel/server/pkg/tool"
)

type GetDeviceListLogic struct {
	logger.Logger
	ctx    context.Context
	svcCtx *svc.ServiceContext
}

// Get Device List
func NewGetDeviceListLogic(ctx context.Context, svcCtx *svc.ServiceContext) *GetDeviceListLogic {
	return &GetDeviceListLogic{
		Logger: logger.WithContext(ctx),
		ctx:    ctx,
		svcCtx: svcCtx,
	}
}

func (l *GetDeviceListLogic) GetDeviceList() (resp *types.GetDeviceListResponse, err error) {
	userInfo := l.ctx.Value(constant.CtxKeyUser).(*user.User)
	scopeHelper := newFamilyScopeHelper(l.ctx, l.svcCtx)
	scopeUserIds, err := scopeHelper.resolveScopedUserIds(userInfo.Id)
	if err != nil {
		return nil, err
	}
	list, count, err := l.svcCtx.UserModel.QueryDeviceListByUserIds(l.ctx, scopeUserIds)
	if err != nil {
		return nil, err
	}
	// FIX: 逐条复制并设置 DeviceNo，避免 DeepCopy 批量复制后 len(userRespList) 与 list 不一致
	// 导致 if i < len(userRespList) 条件失效、只有第一条设备号被正确赋值的 bug。
	// 原始代码（保留以供对照）：
	// userRespList := make([]types.UserDevice, 0)
	// tool.DeepCopy(&userRespList, list)
	// for i, d := range list {
	// 	if i < len(userRespList) {
	// 		userRespList[i].DeviceNo = tool.DeviceIdToHash(d.Id)
	// 	}
	// }
	userRespList := make([]types.UserDevice, 0, len(list))
	for _, d := range list {
		var item types.UserDevice
		tool.DeepCopy(&item, d)
		item.DeviceNo = tool.DeviceIdToHash(d.Id)
		userRespList = append(userRespList, item)
	}
	resp = &types.GetDeviceListResponse{
		Total: count,
		List:  userRespList,
	}
	return
}