feat: Wraps handler into its own package

Although this creates more complex folder structure will allow in the
feature for a easier testing of those given handlers.

1 files changed, 57 insertions, 0 deletions

diff --git a/pkg/handler/about/handler.go b/pkg/handler/about/handler.go
new file mode 100644
index 0000000..a2caa4e
--- /dev/null
+++ b/pkg/handler/about/handler.go
@@ -0,0 +1,57 @@
+package about
+
+import (
+	"io"
+	"log/slog"
+	"net/http"
+	"os"
+
+	"github.com/gomarkdown/markdown"
+	"github.com/gomarkdown/markdown/html"
+	"github.com/gomarkdown/markdown/parser"
+
+	"git.gabrielgio.me/cerrado/templates"
+)
+
+type (
+	AboutHandler struct {
+		readmePath string
+	}
+
+	configurationRepository interface {
+		GetRootReadme() string
+	}
+)
+
+func NewAboutHandler(configRepo configurationRepository) *AboutHandler {
+	return &AboutHandler{configRepo.GetRootReadme()}
+}
+
+func (g *AboutHandler) About(w http.ResponseWriter, _ *http.Request) {
+	f, err := os.Open(g.readmePath)
+	if err != nil {
+		slog.Error("Error loading readme file", "error", err)
+		return
+	}
+
+	bs, err := io.ReadAll(f)
+	if err != nil {
+		slog.Error("Error reading readme file bytes", "error", err)
+		return
+	}
+
+	extensions := parser.CommonExtensions | parser.AutoHeadingIDs | parser.NoEmptyLineBeforeBlock
+	p := parser.NewWithExtensions(extensions)
+	doc := p.Parse(bs)
+
+	htmlFlags := html.CommonFlags | html.HrefTargetBlank
+	opts := html.RendererOptions{Flags: htmlFlags}
+	renderer := html.NewRenderer(opts)
+
+	bs = markdown.Render(doc, renderer)
+
+	gitList := &templates.HelloPage{
+		Body: bs,
+	}
+	templates.WritePageTemplate(w, gitList)
+}