jlelse
/
kis3
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kis3/main.go

203 lines
4.6 KiB
Go

package main
import (
"encoding/json"
"fmt"
"github.com/gobuffalo/packr/v2"
"github.com/gorilla/handlers"
"github.com/gorilla/mux"
"html/template"
"kis3.dev/kis3/helpers"
"log"
"net/http"
"strconv"
"strings"
)
type kis3 struct {
db *Database
router *mux.Router
staticBox *packr.Box
}
var (
app = &kis3{
staticBox: packr.New("staticFiles", "./static"),
}
)
func init() {
e := setupDB()
if e != nil {
log.Fatal("Database setup failed:", e)
}
setupRouter()
setupReports()
}
func main() {
startListening()
}
func setupDB() (e error) {
app.db, e = initDatabase()
return
}
func setupRouter() {
app.router = mux.NewRouter()
corsHandler := handlers.CORS(handlers.AllowedOrigins([]string{"*"}))
viewRouter := app.router.PathPrefix("/view").Subrouter()
viewRouter.Use(corsHandler)
viewRouter.Path("").HandlerFunc(TrackingHandler)
app.router.HandleFunc("/stats", StatsHandler)
staticRouter := app.router.PathPrefix("").Subrouter()
staticRouter.Use(corsHandler)
staticRouter.HandleFunc("/kis3.js", TrackingScriptHandler)
staticRouter.PathPrefix("").Handler(http.HandlerFunc(HelloResponseHandler))
}
func startListening() {
port := appConfig.Port
addr := ":" + port
fmt.Printf("Listening to %s\n", addr)
log.Fatal(http.ListenAndServe(addr, app.router))
}
func TrackingHandler(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Cache-Control", "no-cache, no-store, must-revalidate, max-age=0")
url := r.URL.Query().Get("url")
ref := r.URL.Query().Get("ref")
ua := r.Header.Get("User-Agent")
if !(r.Header.Get("DNT") == "1" && appConfig.Dnt) {
go app.db.trackView(url, ref, ua) // run with goroutine for awesome speed!
_, _ = fmt.Fprint(w, "true")
}
}
func HelloResponseHandler(w http.ResponseWriter, _ *http.Request) {
_, _ = fmt.Fprint(w, "Hello from KISSS")
}
func TrackingScriptHandler(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Content-Type", "application/javascript")
w.Header().Set("Cache-Control", "public, max-age=432000") // 5 days
filename := "kis3.js"
file, err := app.staticBox.Open(filename)
if err != nil {
return
}
defer file.Close()
stat, err := file.Stat()
if err != nil {
return
}
http.ServeContent(w, r, filename, stat.ModTime(), file)
}
func StatsHandler(w http.ResponseWriter, r *http.Request) {
// Require authentication
if appConfig.statsAuth() {
if !helpers.CheckAuth(w, r, appConfig.StatsUsername, appConfig.StatsPassword) {
return
}
}
// Do request
queries := r.URL.Query()
view := PAGES
switch strings.ToLower(queries.Get("view")) {
case "pages":
view = PAGES
case "referrers":
view = REFERRERS
case "useragents":
view = USERAGENTS
case "useragentnames":
view = USERAGENTNAMES
case "hours":
view = HOURS
case "days":
view = DAYS
case "weeks":
view = WEEKS
case "months":
view = MONTHS
case "allhours":
view = ALLHOURS
case "alldays":
view = ALLDAYS
}
result, e := app.db.request(&ViewsRequest{
view: view,
from: queries.Get("from"),
to: queries.Get("to"),
url: queries.Get("url"),
ref: queries.Get("ref"),
ua: queries.Get("ua"),
orderrow: strings.ToLower(queries.Get("orderrow")),
order: strings.ToUpper(queries.Get("order")),
})
if e != nil {
fmt.Println("Database request failed:", e)
w.WriteHeader(500)
} else if result != nil {
w.Header().Set("Cache-Control", "max-age=0")
switch queries.Get("format") {
case "json":
sendJsonResponse(result, w)
case "chart":
sendChartResponse(result, w)
default: // "plain"
sendPlainResponse(result, w)
}
}
}
func sendPlainResponse(result []*RequestResultRow, w http.ResponseWriter) {
w.Header().Set("Content-Type", "text/plain")
for _, row := range result {
_, _ = fmt.Fprintln(w, (*row).First+": "+strconv.Itoa((*row).Second))
}
}
func sendJsonResponse(result []*RequestResultRow, w http.ResponseWriter) {
w.Header().Set("Content-Type", "application/json")
jsonBytes, _ := json.Marshal(result)
_, _ = fmt.Fprintln(w, string(jsonBytes))
}
func sendChartResponse(result []*RequestResultRow, w http.ResponseWriter) {
labels := make([]string, len(result))
values := make([]int, len(result))
for i, row := range result {
labels[i] = row.First
values[i] = row.Second
}
chartJSString, e := app.staticBox.FindString("Chart.min.js")
if e != nil {
return
}
data := struct {
Labels []string
Values []int
ChartJS template.JS
}{
Labels: labels,
Values: values,
ChartJS: template.JS(chartJSString),
}
chartTemplateString, e := app.staticBox.FindString("chart.html")
if e != nil {
return
}
t, e := template.New("chart").Parse(chartTemplateString)
if e != nil {
return
}
_ = t.Execute(w, data)
}