package pagination

import "math"

type Params struct {
	Page         int
	PerPage      int
	TotalCount   int
	TotalPages   int
	OverallCount int
}

func PrepareParams(params *Params) *Params {
	totalPages := int(math.Ceil(float64(params.TotalCount) / float64(params.PerPage)))
	params.TotalPages = totalPages

	if params.Page > totalPages {
		params.Page = totalPages
	}
	return params
}

func PaginatedResponse(data any, params *Params) *Response {
	pagination := Pagination{
		Page:         params.Page,
		PerPage:      params.PerPage,
		Total:        params.TotalCount,
		TotalPages:   params.TotalPages,
		HasNext:      params.Page < params.TotalPages,
		HasPrev:      params.Page > 1,
		OverallCount: params.OverallCount,
	}

	return &Response{Pagination: pagination, Data: data}
}