internal/component => internal/dis/component

internal/dis/component/home/public.go

@@ -0,0 +1,94 @@
+package home
+
+import (
+	"bytes"
+	"context"
+	"time"
+
+	_ "embed"
+
+	"github.com/FAU-CDI/wisski-distillery/internal/dis/component/static"
+	"github.com/FAU-CDI/wisski-distillery/internal/wisski"
+	"github.com/FAU-CDI/wisski-distillery/pkg/timex"
+	"github.com/tkw1536/goprogram/stream"
+	"golang.org/x/sync/errgroup"
+)
+
+func (home *Home) updateInstances(ctx context.Context, io stream.IOStream) {
+	go func() {
+		for t := range timex.TickContext(ctx, home.RefreshInterval) {
+			io.Printf("[%s]: reloading instance list\n", t.Format(time.Stamp))
+
+			names, _ := home.instanceMap()
+			home.instanceNames.Set(names)
+		}
+	}()
+}
+
+func (home *Home) instanceMap() (map[string]struct{}, error) {
+	wissKIs, err := home.Instances.All()
+	if err != nil {
+		return nil, err
+	}
+
+	names := make(map[string]struct{}, len(wissKIs))
+	for _, w := range wissKIs {
+		names[w.Slug] = struct{}{}
+	}
+	return names, nil
+}
+
+func (home *Home) updateRender(ctx context.Context, io stream.IOStream) {
+	go func() {
+		for t := range timex.TickContext(ctx, home.RefreshInterval) {
+			io.Printf("[%s]: reloading home render\n", t.Format(time.Stamp))
+
+			bytes, _ := home.homeRender()
+			home.homeBytes.Set(bytes)
+		}
+	}()
+}
+
+//go:embed "home.html"
+var homeHTMLStr string
+var homeTemplate = static.AssetsHomeHome.MustParse(homeHTMLStr)
+
+func (home *Home) homeRender() ([]byte, error) {
+	var context HomeContext
+
+	// setup a couple of static things
+	context.Time = time.Now().UTC()
+	context.SelfRedirect = home.Config.SelfRedirect.String()
+
+	// find all the WissKIs
+	wissKIs, err := home.Instances.All()
+	if err != nil {
+		return nil, err
+	}
+	context.Instances = make([]wisski.WissKIInfo, len(wissKIs))
+
+	// determine their infos
+	var eg errgroup.Group
+	for i, instance := range wissKIs {
+		i := i
+		wissKI := instance
+		eg.Go(func() (err error) {
+			context.Instances[i], err = wissKI.Info(true)
+			return
+		})
+	}
+	eg.Wait()
+
+	// render the template
+	var buffer bytes.Buffer
+	homeTemplate.Execute(&buffer, context)
+	return buffer.Bytes(), nil
+}
+
+type HomeContext struct {
+	Instances []wisski.WissKIInfo
+
+	Time time.Time
+
+	SelfRedirect string
+}