mirror of https://github.com/muety/wakapi.git
59 lines
1.4 KiB
Go
59 lines
1.4 KiB
Go
package utils
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import (
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"encoding/json"
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"github.com/muety/wakapi/config"
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"github.com/muety/wakapi/models"
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"net/http"
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"regexp"
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"strconv"
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"strings"
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"time"
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)
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const (
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cacheMaxAgePattern = `max-age=(\d+)`
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)
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var (
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cacheMaxAgeRe *regexp.Regexp
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)
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func init() {
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cacheMaxAgeRe = regexp.MustCompile(cacheMaxAgePattern)
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}
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func RespondJSON(w http.ResponseWriter, r *http.Request, status int, object interface{}) {
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w.Header().Set("Content-Type", "application/json")
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w.WriteHeader(status)
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if err := json.NewEncoder(w).Encode(object); err != nil {
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config.Log().Request(r).Error("error while writing json response: %v", err)
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}
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}
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func IsNoCache(r *http.Request, cacheTtl time.Duration) bool {
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cacheControl := r.Header.Get("cache-control")
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if strings.Contains(cacheControl, "no-cache") {
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return true
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}
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if match := cacheMaxAgeRe.FindStringSubmatch(cacheControl); match != nil && len(match) > 1 {
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if maxAge, _ := strconv.Atoi(match[1]); time.Duration(maxAge)*time.Second <= cacheTtl {
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return true
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}
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}
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return false
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}
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func ParsePageParams(r *http.Request) *models.PageParams {
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pageParams := &models.PageParams{}
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page := r.URL.Query().Get("page")
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pageSize := r.URL.Query().Get("page_size")
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if p, err := strconv.Atoi(page); err == nil {
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pageParams.Page = p
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}
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if p, err := strconv.Atoi(pageSize); err == nil && pageParams.Page > 0 {
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pageParams.PageSize = p
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}
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return pageParams
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}
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