package handler

import (
	"errors"
	"net/http"
	"strconv"

	"github.com/gin-gonic/gin"
	"gorm.io/gorm"

	"github.com/wangjia/jiu/backend/internal/middleware"
	"github.com/wangjia/jiu/backend/internal/service"
	"github.com/wangjia/jiu/backend/internal/util"
)

type SessionHandler struct {
	svc *service.AuthService
}

func NewSessionHandler(svc *service.AuthService) *SessionHandler {
	return &SessionHandler{svc: svc}
}

// List GET /api/v1/sessions —— 列出本店在线会话（所有登录用户只读）
func (h *SessionHandler) List(c *gin.Context) {
	shopID := middleware.GetShopID(c)
	views, err := h.svc.ListSessions(shopID, middleware.GetSID(c))
	if err != nil {
		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
		return
	}
	util.RespondSuccess(c, views)
}

// ForceLogout DELETE /api/v1/sessions/:id —— 强制下线（仅 admin/superadmin，挂 AdminOnly）
func (h *SessionHandler) ForceLogout(c *gin.Context) {
	id, err := strconv.ParseUint(c.Param("id"), 10, 64)
	if err != nil {
		c.JSON(http.StatusBadRequest, gin.H{"error": "invalid session id"})
		return
	}
	shopID := middleware.GetShopID(c)
	if err := h.svc.ForceLogout(shopID, id, middleware.GetUserID(c)); err != nil {
		if errors.Is(err, gorm.ErrRecordNotFound) {
			c.JSON(http.StatusNotFound, gin.H{"error": "session not found"})
			return
		}
		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
		return
	}
	util.RespondSuccess(c, gin.H{"ok": true})
}