package user

import (
	"encoding/json"
	"errors"

	"github.com/gin-gonic/gin"
	"github.com/perfect-panel/server/internal/logic/admin/user"
	"github.com/perfect-panel/server/internal/svc"
	"github.com/perfect-panel/server/internal/types"
	"github.com/perfect-panel/server/pkg/result"
)

// Update user subcribe
func UpdateUserSubscribeHandler(svcCtx *svc.ServiceContext) func(c *gin.Context) {
	return func(c *gin.Context) {
		var req types.UpdateUserSubscribeRequest
		_ = c.ShouldBind(&req)
		validateErr := svcCtx.Validate(&req)
		if validateErr != nil {
			result.ParamErrorResult(c, validateErr)
			return
		}
		if err := validateUpdateUserSubscribeTrafficLimit(&req); err != nil {
			result.ParamErrorResult(c, err)
			return
		}

		l := user.NewUpdateUserSubscribeLogic(c.Request.Context(), svcCtx)
		err := l.UpdateUserSubscribe(&req)
		result.HttpResult(c, nil, err)
	}
}

func validateUpdateUserSubscribeTrafficLimit(req *types.UpdateUserSubscribeRequest) error {
	if req.TrafficLimit == nil || *req.TrafficLimit == "" {
		return nil
	}

	var rules []types.TrafficLimit
	if err := json.Unmarshal([]byte(*req.TrafficLimit), &rules); err != nil {
		return errors.New("traffic_limit must be a valid JSON array")
	}
	return nil
}