package user

import (
	"nixcn-cms/internal/exception"
	"nixcn-cms/service/service_user"
	"nixcn-cms/utils"

	"github.com/gin-gonic/gin"
)

// List retrieves a paginated list of users from the search engine.
//	@Summary		List Users
//	@Description	Fetches a list of users with support for pagination via limit and offset. Data is sourced from the search engine for high performance.
//	@Tags			User
//	@Accept			json
//	@Produce		json
//	@Param			limit	query		string										false	"Maximum number of users to return (default 0)"
//	@Param			offset	query		string										true	"Number of users to skip"
//	@Success		200		{object}	utils.RespStatus{data=[]data.UserSearchDoc}	"Successful paginated list retrieval"
//	@Failure		400		{object}	utils.RespStatus{data=nil}					"Invalid Input (Format Error)"
//	@Failure		500		{object}	utils.RespStatus{data=nil}					"Internal Server Error (Search Engine or Missing Offset)"
//	@Security		ApiKeyAuth
//	@Router			/user/list [get]
func (self *UserHandler) List(c *gin.Context) {
	type ListQuery struct {
		Limit  *string `form:"limit"`
		Offset *string `form:"offset"`
	}

	var query ListQuery
	if err := c.ShouldBindQuery(&query); err != nil {
		exception := new(exception.Builder).
			SetStatus(exception.StatusClient).
			SetService(exception.ServiceUser).
			SetEndpoint(exception.EndpointUserServiceList).
			SetType(exception.TypeCommon).
			SetOriginal(exception.CommonErrorInvalidInput).
			Throw(c).
			String()

		utils.HttpResponse(c, 400, exception)
		return
	}

	userListPayload := &service_user.UserListPayload{
		Context: c,
		Limit:   query.Limit,
		Offset:  query.Offset,
	}

	result := self.svc.ListUsers(userListPayload)

	if result.Common.Exception.Original != exception.CommonSuccess {
		utils.HttpResponse(c, result.Common.HttpCode, result.Common.Exception.String())
		return
	}

	utils.HttpResponse(c, result.Common.HttpCode, result.Common.Exception.String(), result.Data)
}