| package main |
| |
| import ( |
| "encoding/json" |
| "fmt" |
| "html/template" |
| "net/http" |
| "strings" |
| |
| "github.com/golang/glog" |
| |
| "code.hackerspace.pl/hscloud/hswaw/site/calendar" |
| "code.hackerspace.pl/hscloud/hswaw/site/templates" |
| ) |
| |
| // parseTemplates parses a set of templates from |
| // //hswaw/site/templates/$name.html into a Go HTML template. Typical Go text |
| // templating ordering behaviour applies (this basically replicates |
| // template.ParseFiles, but for statically embedded files instead). |
| func parseTemplates(names ...string) (*template.Template, error) { |
| if len(names) == 0 { |
| return nil, fmt.Errorf("at least one template must be given") |
| } |
| |
| var t *template.Template |
| for _, n := range names { |
| path := fmt.Sprintf("hswaw/site/templates/%s.html", n) |
| data, ok := templates.Data[path] |
| if !ok { |
| return nil, fmt.Errorf("template %q (%s) not found", n, path) |
| } |
| s := string(data) |
| |
| if t == nil { |
| t = template.New(n) |
| } |
| _, err := t.Parse(s) |
| if err != nil { |
| return nil, fmt.Errorf("template %q could not be parsed: %w", n, err) |
| } |
| } |
| return t, nil |
| } |
| |
| var ( |
| tmplIndex = template.Must(parseTemplates("index")) |
| ) |
| |
| // render attempts to render a given Go template with data into the HTTP |
| // response writer, and logs a warning if anything goes wrong. |
| func render(w http.ResponseWriter, t *template.Template, data interface{}) { |
| if err := t.Execute(w, data); err != nil { |
| glog.Warningf("Rendering %v failed: %v", t, err) |
| } |
| } |
| |
| // handleIndex handles rendering the main page at /. |
| func (s *service) handleIndex(w http.ResponseWriter, r *http.Request) { |
| // Necessary as "/" is a catch-all in net/http. |
| if r.URL.Path != "/" { |
| http.NotFound(w, r) |
| return |
| } |
| |
| ctx := r.Context() |
| |
| atStatus, atError := getAt(ctx) |
| |
| render(w, tmplIndex, map[string]interface{}{ |
| "Entries": s.getFeeds(), |
| "Events": s.getEvents(), |
| "AtStatus": atStatus, |
| "AtError": atError, |
| }) |
| } |
| |
| func (s *service) handleRobotsTxt(w http.ResponseWriter, r *http.Request) { |
| // Allow everyone everywhere. We don't really host much on hackerspace.pl anyway. |
| fmt.Fprintf(w, "User-agent: *\n") |
| fmt.Fprintf(w, "Allow: /\n") |
| } |
| |
| func (s *service) handleJSONEvents(w http.ResponseWriter, r *http.Request) { |
| w.Header().Set("Content-Type", "application/json") |
| json.NewEncoder(w).Encode(s.getEvents()) |
| } |
| |
| // handleEvent is a fallback HTML-only event render view. |
| // TODO(q3k): make this pretty by either making a template or redirecting to a |
| // pretty viewer. |
| func (s *service) handleEvent(w http.ResponseWriter, r *http.Request) { |
| parts := strings.Split(r.URL.Path, "/") |
| uid := parts[len(parts)-1] |
| |
| events := s.getEvents() |
| var event *calendar.UpcomingEvent |
| for _, ev := range events { |
| if ev.UID == uid { |
| event = ev |
| break |
| } |
| } |
| if event == nil { |
| http.NotFound(w, r) |
| return |
| } |
| |
| render(w, template.Must(template.New("event").Parse(`<!DOCTYPE html> |
| <meta charset="utf-8"> |
| <title>Event details: {{ .Summary }}</title> |
| <body> |
| <i>this interface intentionally left ugly...</i><br/> |
| <b>summary:</b> {{ .Summary }}<br /> |
| <b>date:</b> {{ .WarsawDate }}<br /> |
| <pre>{{ .Description }}</pre>`)), event) |
| } |
| |
| func (s *service) handleSpaceAPI(w http.ResponseWriter, r *http.Request) { |
| ctx := r.Context() |
| w.Header().Set("Content-Type", "application/json") |
| json.NewEncoder(w).Encode(generateSpaceAPIResponse(ctx)) |
| } |