implement Get person endpoint

backend/handlers/viewPerson.go

@@ -0,0 +1,48 @@
+package handlers
+
+import (
+	"context"
+	"fmt"
+	"log"
+	"net/http"
+	"time"
+
+	"github.com/gin-gonic/gin"
+	"github.com/neo4j/neo4j-go-driver/v5/neo4j"
+)
+
+func ViewPerson(driver neo4j.DriverWithContext) gin.HandlerFunc {
+	return func(c *gin.Context) {
+		ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+		defer cancel()
+
+		session := driver.NewSession(ctx, neo4j.SessionConfig{AccessMode: neo4j.AccessModeRead})
+		defer session.Close(ctx)
+
+		id := c.Query("id")
+		if id == "" {
+			c.JSON(http.StatusBadRequest, gin.H{"error": "id is required"})
+
+			return
+		}
+		query := fmt.Sprintf("MATCH (n:Person) WHERE n.ID = '%s' RETURN n", id)
+
+		result, err := session.Run(ctx, query, nil)
+		if err != nil {
+			log.Println(err)
+			c.JSON(http.StatusInternalServerError, gin.H{"error": "internal server error"})
+
+			return
+		}
+
+		rec, err := result.Single(ctx)
+		if err != nil {
+			log.Println(err)
+			c.JSON(http.StatusNotFound, gin.H{"error": "could not find person with information provided"})
+
+			return
+		}
+
+		c.JSON(200, gin.H{"person": rec.AsMap()})
+	}
+}