/
main.go
46 lines (41 loc) · 979 Bytes
/
main.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
package main
import (
"fmt"
"log"
"net/http"
"os"
"text/template"
"time"
)
func main() {
log.Println("I started!")
fs := http.FileServer(http.Dir("./static"))
http.Handle("/static/", http.StripPrefix("/static/", fs))
http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
log.Println("Starting regenerate...")
regeneratePng()
log.Println("Done!")
funcMap := template.FuncMap{
"now": time.Now,
}
templateText := `<html><body><img src="/static/sample.png?{{now.Unix}}" /></body></html>`
tmpl, err := template.New("titleTest").Funcs(funcMap).Parse(templateText)
if err != nil {
log.Fatalf("parsing: %s", err)
}
err = tmpl.Execute(w, nil)
if err != nil {
log.Fatalf("execution: %s", err)
}
})
port := os.Getenv("PORT")
if port == "" {
log.Fatal("$PORT must be set")
}
if err := http.ListenAndServe(fmt.Sprintf(":%v", port), nil); err != nil {
log.Fatal(err)
}
}
func regeneratePng() {
drawFireworksInTheFog()
}