evdist: Retactor + include dashboard lookup

evdist/dashboard.go

@@ -0,0 +1,92 @@
+package main
+
+import (
+	"fmt"
+	"log"
+	"os"
+	"path"
+	"strconv"
+	"strings"
+	"time"
+)
+
+var DashboardDir = "DASHBOARD"
+
+type NextDashboardFile struct {
+	Id     int64     `json:"id"`
+	Name   string    `json:"name"`
+	Screen int       `json:"screen"`
+	Date   time.Time `json:"date"`
+}
+
+func (ndf *NextDashboardFile) GetId() int64 {
+	return ndf.Id
+}
+
+func (ndf *NextDashboardFile) GetDate() *time.Time {
+	return &ndf.Date
+}
+
+// NewDashboardDistList creates a distList from the given src directory
+func NewDashboardDistList(src string) (*distList, error) {
+	var list []DistEvent
+
+	files, err := os.ReadDir(DashboardDir)
+	if err != nil {
+		return nil, err
+	}
+
+	for _, file := range files {
+		if !strings.HasPrefix(file.Name(), "public") || len(file.Name()) < 18 {
+			continue
+		}
+
+		ts, err := strconv.ParseInt(file.Name()[8:18], 10, 64)
+		if err == nil {
+			s, _ := strconv.Atoi(file.Name()[6:7])
+			list = append(list, &NextDashboardFile{
+				Id:     ts * int64(s),
+				Name:   file.Name(),
+				Screen: s,
+				Date:   time.Unix(ts, 0),
+			})
+		}
+	}
+
+	return &distList{List: list, Timer: time.NewTimer(time.Minute)}, nil
+}
+
+func parseDashboardFilename(fname string) (int64, error) {
+	return strconv.ParseInt(fname[8:18], 10, 64)
+}
+
+func newDashboardFile(l *distList, raw_path string) {
+	bpath := path.Base(raw_path)
+
+	if !strings.HasPrefix(bpath, "public") || len(bpath) < 18 {
+		return
+	}
+
+	if ts, err := parseSettingsFilename(bpath); err == nil {
+		activateTime := time.Unix(ts, 0)
+
+		log.Printf("Preparing %s: activation time at %s", bpath, activateTime)
+
+		s, _ := strconv.Atoi(bpath[6:7])
+		l.AddEvent(&NextDashboardFile{
+			Id:     ts * int64(s),
+			Name:   bpath,
+			Screen: s,
+			Date:   activateTime,
+		})
+	} else {
+		log.Println("WARNING: Unknown file to treat: not a valid timestamp:", err.Error())
+	}
+}
+
+func treatDashboardFile(e *NextDashboardFile) {
+	err := os.Rename(path.Join(DashboardDir, e.Name), path.Join(DashboardDir, fmt.Sprintf("public%d.json", e.Screen)))
+	if err != nil {
+		log.Printf("Unable to move %q: %s", e.Name, err.Error())
+	}
+}