feat: first frontend implementation

adapters/secondary/TemplateAdapter.go

@@ -0,0 +1,48 @@
+package secondary
+
+import (
+	"bytes"
+	"html/template"
+	"os"
+)
+
+func ProcessTemplate(html []byte, data interface{}) ([]byte, error) {
+	tmpl, err := template.New("template").Parse(string(html))
+	if err != nil {
+		return nil, err
+	}
+
+	var processedHTML bytes.Buffer
+	err = tmpl.Execute(&processedHTML, data)
+	if err != nil {
+		return nil, err
+	}
+
+	return processedHTML.Bytes(), nil
+}
+
+func GetTemplate(name string) []byte {
+	file, err := os.Open("./web/templates/" + name + ".html")
+	if err != nil {
+		panic(err)
+	}
+	defer func(file *os.File) {
+		err := file.Close()
+		if err != nil {
+			panic(err)
+		}
+	}(file)
+
+	stat, err := file.Stat()
+	if err != nil {
+		panic(err)
+	}
+
+	bs := make([]byte, stat.Size())
+	_, err = file.Read(bs)
+	if err != nil {
+		panic(err)
+	}
+
+	return bs
+}