| 1 | package main |
| 2 | |
| 3 | import ( |
| 4 | "bytes" |
| 5 | "fmt" |
| 6 | "html/template" |
| 7 | "io/fs" |
| 8 | "net/http" |
| 9 | "path" |
| 10 | "strings" |
| 11 | ) |
| 12 | |
| 13 | func buildTemplates() (map[string]*template.Template, error) { |
| 14 | pages, err := fs.Glob(appFS, "templates/*.html") |
| 15 | if err != nil { |
| 16 | return nil, err |
| 17 | } |
| 18 | |
| 19 | out := make(map[string]*template.Template, len(pages)) |
| 20 | for _, page := range pages { |
| 21 | if strings.HasSuffix(page, "/base.html") { |
| 22 | continue |
| 23 | } |
| 24 | tmpl, err := template.ParseFS(appFS, "templates/base.html", page) |
| 25 | if err != nil { |
| 26 | return nil, fmt.Errorf("parse %s: %w", page, err) |
| 27 | } |
| 28 | out[path.Base(page)] = tmpl |
| 29 | } |
| 30 | return out, nil |
| 31 | } |
| 32 | |
| 33 | func (a *App) renderPage(w http.ResponseWriter, name string, data any) { |
| 34 | a.renderPageStatus(w, http.StatusOK, name, data) |
| 35 | } |
| 36 | |
| 37 | func (a *App) renderPageStatus(w http.ResponseWriter, status int, name string, data any) { |
| 38 | tmpl, ok := a.Templates[name] |
| 39 | if !ok { |
| 40 | a.Log.Error("template missing", "name", name) |
| 41 | http.Error(w, "template missing", http.StatusInternalServerError) |
| 42 | return |
| 43 | } |
| 44 | |
| 45 | var buf bytes.Buffer |
| 46 | if err := tmpl.ExecuteTemplate(&buf, name, data); err != nil { |
| 47 | a.Log.Error("template render failed", "name", name, "err", err) |
| 48 | http.Error(w, "template error", http.StatusInternalServerError) |
| 49 | return |
| 50 | } |
| 51 | |
| 52 | w.Header().Set("Content-Type", "text/html; charset=utf-8") |
| 53 | w.WriteHeader(status) |
| 54 | _, _ = w.Write(buf.Bytes()) |
| 55 | } |