Restructure project layout

internal/api/health.go

@@ -0,0 +1,22 @@
+package api
+
+import (
+	"net/http"
+
+	"github.com/gin-gonic/gin"
+)
+
+// HealthHandler holds information for processing requests about the server's health.
+type HealthHandler struct {
+	DB Database
+}
+
+// Health returns the health status of the server.
+func (h *HealthHandler) Health(ctx *gin.Context) {
+	if err := h.DB.Health(); err != nil {
+		ctx.AbortWithError(http.StatusInternalServerError, err)
+		return
+	}
+
+	ctx.JSON(http.StatusOK, gin.H{})
+}