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user-system/internal/api/handler/common.go

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package handler
import (
"strconv"
"github.com/gin-gonic/gin"
"github.com/user-management-system/internal/pagination"
)
// parsePageAndSize extracts and validates page & page_size from query parameters.
// Returns page (>=1) and pageSize (clamped to [1, MaxPageSize]).
func parsePageAndSize(c *gin.Context) (page, pageSize int) {
page, _ = strconv.Atoi(c.DefaultQuery("page", "1"))
if page < 1 {
page = 1
}
pageSize, _ = strconv.Atoi(c.DefaultQuery("page_size", strconv.Itoa(pagination.DefaultPageSize)))
pageSize = pagination.ClampPageSize(pageSize)
return
}