package neo4j

import (
	"log"
	"net/http"

	"github.com/gin-contrib/cors"
	"github.com/gin-gonic/gin"

	"knowledge-graph-backend/handlers"
	"knowledge-graph-backend/services"
)

const (
	PORT      = "3001"
	DATA_FILE = "data.json"
)

func test() {

	dataService, err := services.NewDataService(DATA_FILE)
	if err != nil {
		log.Fatalf("Failed to initialize data service: %v", err)
	}

	graphHandler := handlers.NewGraphHandler(dataService)
	searchHandler := handlers.NewSearchHandler(dataService)
	nodeHandler := handlers.NewNodeHandler(dataService)

	router := gin.Default()

	router.Use(cors.New(cors.Config{
		AllowOrigins:     []string{"http://localhost:5173", "http://localhost:3000"},
		AllowMethods:     []string{"GET", "POST", "PUT", "DELETE", "OPTIONS"},
		AllowHeaders:     []string{"Origin", "Content-Type", "Authorization", "Accept"},
		ExposeHeaders:    []string{"Content-Length", "Content-Type"},
		AllowCredentials: true,
		MaxAge:           12 * 3600,
	}))

	router.GET("/health", func(c *gin.Context) {
		c.JSON(http.StatusOK, gin.H{
			"status":  "ok",
			"message": "Knowledge Graph API is running",
			"version": "1.0.0",
		})
	})

	api := router.Group("/api")
	{
		api.GET("/graph", graphHandler.GetGraphData)
		api.GET("/graph/stats", graphHandler.GetStats)

		api.GET("/search", searchHandler.SearchNodes)

		api.GET("/nodes/:id", nodeHandler.GetNodeByID)
		api.GET("/nodes/:id/neighbors", nodeHandler.GetNeighbors)
	}

	log.Println("Knowledge Graph API Server running on http://localhost:" + PORT)
	log.Println("Data file loaded from: " + DATA_FILE)
	log.Println("Available endpoints:")
	log.Println("  GET /health - Health check")
	log.Println("  GET /api/graph - Get all graph data")
	log.Println("  GET /api/graph/stats - Get graph statistics")
	log.Println("  GET /api/search?q=query - Search nodes")
	log.Println("  GET /api/nodes/:id - Get node by ID")
	log.Println("  GET /api/nodes/:id/neighbors - Get node neighbors")

	if err := router.Run(":" + PORT); err != nil {
		log.Fatalf("Failed to start server: %v", err)
	}
}