202 lines
4.6 KiB
Go
202 lines
4.6 KiB
Go
package main
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import (
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"encoding/json"
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"fmt"
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"github.com/gobuffalo/packr/v2"
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"github.com/gorilla/handlers"
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"github.com/gorilla/mux"
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"github.com/wcharczuk/go-chart"
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"github.com/wcharczuk/go-chart/drawing"
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"kis3.dev/kis3/helpers"
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"log"
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"math"
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"net/http"
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"strconv"
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)
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type kis3 struct {
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db *Database
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router *mux.Router
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staticBox *packr.Box
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staticFS http.Handler
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}
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var (
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app = &kis3{}
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)
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func init() {
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e := app.setupDB()
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if e != nil {
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log.Fatal("Database setup failed:", e)
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}
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app.setupRouter()
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}
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func main() {
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app.startListening()
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}
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func (kis3 *kis3) setupDB() (e error) {
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kis3.db, e = initDatabase()
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return
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}
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func (kis3 *kis3) setupRouter() {
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kis3.router = mux.NewRouter()
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corsHandler := handlers.CORS(handlers.AllowedOrigins([]string{"*"}))
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viewRouter := kis3.router.PathPrefix("/view").Subrouter()
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viewRouter.Use(corsHandler)
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viewRouter.Path("").HandlerFunc(kis3.trackView)
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kis3.router.HandleFunc("/stats", kis3.requestStats)
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staticRouter := kis3.router.PathPrefix("").Subrouter()
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staticRouter.Use(corsHandler)
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staticRouter.PathPrefix("").Handler(http.HandlerFunc(kis3.serveStaticFile))
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}
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func (kis3 kis3) startListening() {
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port := appConfig.port
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addr := ":" + port
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fmt.Printf("Listening to %s\n", addr)
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log.Fatal(http.ListenAndServe(addr, kis3.router))
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}
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func (kis3 kis3) trackView(w http.ResponseWriter, r *http.Request) {
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url := r.Header.Get("Referer") // URL of requesting source
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ref := r.URL.Query().Get("ref")
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ua := r.Header.Get("User-Agent")
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if !(r.Header.Get("DNT") == "1" && appConfig.dnt) {
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go kis3.db.trackView(url, ref, ua) // run with goroutine for awesome speed!
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_, _ = fmt.Fprint(w, "true")
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}
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}
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func sendHelloResponse(w http.ResponseWriter) {
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_, _ = fmt.Fprint(w, "Hello from KISSS")
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}
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func (kis3 kis3) serveStaticFile(w http.ResponseWriter, r *http.Request) {
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if kis3.staticBox == nil || kis3.staticFS == nil {
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kis3.staticBox = packr.New("staticFiles", "./static")
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kis3.staticFS = http.FileServer(kis3.staticBox)
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}
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uPath := r.URL.Path
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if uPath != "/" && kis3.staticBox.Has(uPath) {
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kis3.staticFS.ServeHTTP(w, r)
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} else {
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sendHelloResponse(w)
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}
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}
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func (kis3 kis3) requestStats(w http.ResponseWriter, r *http.Request) {
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// Require authentication
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if appConfig.statsAuth {
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if !helpers.CheckAuth(w, r, appConfig.statsUsername, appConfig.statsPassword) {
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return
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}
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}
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// Do request
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queries := r.URL.Query()
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view := PAGES
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switch queries.Get("view") {
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case "pages":
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view = PAGES
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case "referrers":
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view = REFERRERS
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case "hours":
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view = HOURS
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case "days":
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view = DAYS
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case "weeks":
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view = WEEKS
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case "months":
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view = MONTHS
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}
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result, e := kis3.db.request(&ViewsRequest{
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view: view,
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from: queries.Get("from"),
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to: queries.Get("to"),
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url: queries.Get("url"),
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domain: queries.Get("domain"),
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ref: queries.Get("ref"),
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})
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if e != nil {
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fmt.Println("Database request failed:", e)
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w.WriteHeader(500)
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} else if result != nil {
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switch queries.Get("format") {
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case "json":
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sendJsonResponse(result, w)
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return
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case "chart":
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sendChartResponse(result, w)
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return
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default: // "plain"
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sendPlainResponse(result, w)
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return
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}
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}
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}
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func sendPlainResponse(result []*RequestResultRow, w http.ResponseWriter) {
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w.Header().Add("Content-Type", "text/plain")
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for _, row := range result {
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_, _ = fmt.Fprintln(w, (*row).First+": "+strconv.Itoa((*row).Second))
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}
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}
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func sendJsonResponse(result []*RequestResultRow, w http.ResponseWriter) {
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w.Header().Add("Content-Type", "application/json")
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jsonBytes, _ := json.Marshal(result)
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_, _ = fmt.Fprintln(w, string(jsonBytes))
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}
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func sendChartResponse(result []*RequestResultRow, w http.ResponseWriter) {
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var values []chart.Value
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max := float64(1)
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for _, row := range result {
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values = append(values, chart.Value{Label: row.First, Value: float64(row.Second), Style: chart.Style{
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FillColor: drawing.ColorBlue,
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StrokeColor: drawing.ColorBlue,
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}})
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max = math.Max(max, float64(row.Second))
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}
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chartRange := &chart.ContinuousRange{
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Min: float64(0),
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Max: max,
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}
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chartWidth := len(values)*30 + 100
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barChart := chart.BarChart{
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Title: "Stats",
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Height: 500,
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Width: chartWidth,
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TitleStyle: chart.StyleShow(),
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Background: chart.Style{
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Padding: chart.Box{
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Top: 40,
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},
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},
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BarWidth: 20,
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BarSpacing: 10,
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XAxis: chart.Style{
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Show: true,
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TextRotationDegrees: 90.0,
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},
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YAxis: chart.YAxis{
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Style: chart.StyleShow(),
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Range: chartRange,
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},
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Bars: values,
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}
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w.Header().Set("Content-Type", chart.ContentTypeSVG)
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e := barChart.Render(chart.SVG, w)
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if e != nil {
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sendPlainResponse(result, w) // Fallback to plain
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}
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}
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