Lots of changes to the website

internal/handler/handler.go

@@ -8,11 +8,13 @@ import (
 	"net/http"
 	"os"
 	"path/filepath"
+	"strings"
 	"time"
 
 	"ridgwaysystems.org/website/internal/blog"
 	"ridgwaysystems.org/website/internal/newsletter"
 	"ridgwaysystems.org/website/internal/ratelimit"
+	"ridgwaysystems.org/website/internal/status"
 )
 
 // Handler holds shared dependencies for all HTTP handlers.
@@ -84,12 +86,15 @@ func mustLoadTemplates() map[string]*template.Template {
 		{"uses", "templates/uses.html"},
 		{"projects", "templates/projects.html"},
 		{"error", "templates/error.html"},
+		{"changelog", "templates/changelog.html"},
 		{"admin-login", "templates/admin/login.html"},
 		{"admin-dashboard", "templates/admin/dashboard.html"},
 		{"admin-editor", "templates/admin/editor.html"},
 		{"admin-status", "templates/admin/status.html"},
 		{"admin-uploads", "templates/admin/uploads.html"},
 		{"admin-newsletter", "templates/admin/newsletter.html"},
+		{"admin-changelog", "templates/admin/changelog.html"},
+		{"admin-changelog-editor", "templates/admin/changelog-editor.html"},
 	}
 
 	for _, p := range pages {
@@ -103,6 +108,56 @@ func mustLoadTemplates() map[string]*template.Template {
 	return m
 }
 
+// baseEnvelope wraps page-specific data with shared layout data for the base template.
+type baseEnvelope struct {
+	Banner *siteBanner
+	Inner  any
+}
+
+// siteBanner holds the data for the site-wide status banner.
+type siteBanner struct {
+	Level   string // "danger" | "warning"
+	Message string
+}
+
+// computeBanner loads status.json and returns a banner if any services are down or degraded.
+func (h *Handler) computeBanner() *siteBanner {
+	p, err := status.Load(filepath.Join(h.dataDir, "status.json"))
+	if err != nil || p == nil {
+		return nil
+	}
+	var down, degraded []string
+	for _, s := range p.Services {
+		switch s.Status {
+		case "down":
+			down = append(down, s.Name)
+		case "degraded":
+			degraded = append(degraded, s.Name)
+		}
+	}
+	switch {
+	case len(down) > 0:
+		noun := "are unavailable"
+		if len(down) == 1 {
+			noun = "is unavailable"
+		}
+		return &siteBanner{
+			Level:   "danger",
+			Message: "Major Outage \u2014 " + strings.Join(down, ", ") + " " + noun + ".",
+		}
+	case len(degraded) > 0:
+		noun := "are experiencing issues"
+		if len(degraded) == 1 {
+			noun = "is experiencing issues"
+		}
+		return &siteBanner{
+			Level:   "warning",
+			Message: "Partial Outage \u2014 " + strings.Join(degraded, ", ") + " " + noun + ".",
+		}
+	}
+	return nil
+}
+
 func (h *Handler) render(w http.ResponseWriter, name string, data any) {
 	t := h.tmpl(name)
 	if t == nil {
@@ -110,7 +165,7 @@ func (h *Handler) render(w http.ResponseWriter, name string, data any) {
 		return
 	}
 	w.Header().Set("Content-Type", "text/html; charset=utf-8")
-	if err := t.ExecuteTemplate(w, "base", data); err != nil {
+	if err := t.ExecuteTemplate(w, "base", baseEnvelope{Banner: h.computeBanner(), Inner: data}); err != nil {
 		log.Printf("render %s: %v", name, err)
 	}
 }
@@ -132,7 +187,7 @@ func (h *Handler) renderErr(w http.ResponseWriter, code int, msg string) {
 			code, http.StatusText(code), msg)
 		return
 	}
-	if err := t.ExecuteTemplate(w, "base", data); err != nil {
+	if err := t.ExecuteTemplate(w, "base", baseEnvelope{Banner: h.computeBanner(), Inner: data}); err != nil {
 		log.Printf("renderErr %d: %v", code, err)
 	}
 }