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pixels_handler.go
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/
pixels_handler.go
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package routes
import (
"database/sql"
"log"
"net/http"
"net/url"
"strconv"
"strings"
"github.com/jonahgeorge/weatherglass/models"
repo "github.com/jonahgeorge/weatherglass/repositories"
"github.com/mssola/user_agent"
)
func (app *Application) PixelsCreateHandler(w http.ResponseWriter, r *http.Request) {
eventsRepo := repo.NewEventsRepository(app.db)
event := eventFromRequest(r)
_, err := eventsRepo.Create(event)
if err != nil && err != sql.ErrNoRows {
log.Println(err)
w.WriteHeader(500)
return
}
w.WriteHeader(200)
}
func eventFromRequest(r *http.Request) *models.Event {
queryParams, _ := ParseQuery(r.URL.RawQuery)
siteId, _ := strconv.Atoi(queryParams.Get("site_id"))
userAgent := getOrNil(queryParams, "user_agent")
ua := user_agent.New(*userAgent)
name, version := ua.Browser()
return &models.Event{
SiteId: siteId,
Resource: getOrNil(queryParams, "resource"),
Referrer: getOrNil(queryParams, "referrer"),
Title: getOrNil(queryParams, "title"),
UserAgent: getOrNil(queryParams, "user_agent"),
BrowserName: &name,
BrowserVersion: &version,
}
}
func getOrNil(values url.Values, key string) *string {
val := values.Get(key)
if len(val) > 0 {
return &val
} else {
return nil
}
}
func ParseQuery(query string) (url.Values, error) {
m := make(url.Values)
err := tolerantParseQuery(m, query)
return m, err
}
func tolerantParseQuery(m url.Values, query string) (err error) {
for query != "" {
key := query
if i := strings.IndexAny(key, "&"); i >= 0 {
key, query = key[:i], key[i+1:]
} else {
query = ""
}
if key == "" {
continue
}
value := ""
if i := strings.Index(key, "="); i >= 0 {
key, value = key[:i], key[i+1:]
}
key, err1 := url.QueryUnescape(key)
if err1 != nil {
if err == nil {
err = err1
}
continue
}
value, err1 = url.QueryUnescape(value)
if err1 != nil {
if err == nil {
err = err1
}
continue
}
m[key] = append(m[key], value)
}
return err
}