package main

import (
	"net/http"
	"net/http/httptest"
	"testing"

	"github.com/gin-gonic/gin"

	"git.gobha.me/xcaliber/chat-switchboard/config"
	"git.gobha.me/xcaliber/chat-switchboard/handlers"
	"git.gobha.me/xcaliber/chat-switchboard/middleware"
)

func init() {
	gin.SetMode(gin.TestMode)
}

func TestHealthEndpoint(t *testing.T) {
	r := gin.New()
	r.GET("/health", func(c *gin.Context) {
		c.JSON(200, gin.H{"status": "ok", "version": "test", "database": false})
	})

	w := httptest.NewRecorder()
	req, _ := http.NewRequest("GET", "/health", nil)
	r.ServeHTTP(w, req)

	if w.Code != http.StatusOK {
		t.Errorf("Expected status %d, got %d", http.StatusOK, w.Code)
	}
}

func TestCORSHeaders(t *testing.T) {
	r := gin.New()
	r.Use(middleware.CORS())
	r.GET("/test", func(c *gin.Context) {
		c.Status(200)
	})

	w := httptest.NewRecorder()
	req, _ := http.NewRequest("OPTIONS", "/test", nil)
	r.ServeHTTP(w, req)

	if w.Code != http.StatusNoContent {
		t.Errorf("Expected %d for OPTIONS, got %d", http.StatusNoContent, w.Code)
	}
	if w.Header().Get("Access-Control-Allow-Origin") != "*" {
		t.Error("Missing CORS header")
	}
}

func TestAuthRoutesRegistered(t *testing.T) {
	cfg := &config.Config{JWTSecret: "test-secret"}
	auth := handlers.NewAuthHandler(cfg)

	r := gin.New()
	api := r.Group("/api/v1")
	authGroup := api.Group("/auth")
	{
		authGroup.POST("/register", auth.Register)
		authGroup.POST("/login", auth.Login)
		authGroup.POST("/refresh", auth.Refresh)
		authGroup.POST("/logout", auth.Logout)
	}

	routes := r.Routes()
	routePaths := make(map[string]bool)
	for _, route := range routes {
		routePaths[route.Method+" "+route.Path] = true
	}

	expected := []string{
		"POST /api/v1/auth/register",
		"POST /api/v1/auth/login",
		"POST /api/v1/auth/refresh",
		"POST /api/v1/auth/logout",
	}

	for _, e := range expected {
		if !routePaths[e] {
			t.Errorf("Expected route %s to be registered", e)
		}
	}
}

func TestProtectedRoutesRegistered(t *testing.T) {
	r := gin.New()
	api := r.Group("/api/v1")
	protected := api.Group("")
	{
		protected.GET("/chats", handleListChats)
		protected.POST("/chats", handleCreateChat)
		protected.GET("/chats/:id", handleGetChat)
		protected.DELETE("/chats/:id", handleDeleteChat)
		protected.GET("/chats/:id/messages", handleGetMessages)
		protected.POST("/chats/:id/messages", handleCreateMessage)
		protected.GET("/settings", handleGetSettings)
		protected.GET("/api-configs", handleListAPIConfigs)
		protected.GET("/models", handleListModels)
	}

	routes := r.Routes()
	if len(routes) != 9 {
		t.Errorf("Expected 9 routes, got %d", len(routes))
	}
}

func TestAuthMiddlewareNoDatabase(t *testing.T) {
	cfg := &config.Config{JWTSecret: "test-secret"}
	r := gin.New()
	r.Use(middleware.Auth(cfg))
	r.GET("/protected", func(c *gin.Context) {
		c.JSON(200, gin.H{"ok": true})
	})

	w := httptest.NewRecorder()
	req, _ := http.NewRequest("GET", "/protected", nil)
	r.ServeHTTP(w, req)

	// No database connected → middleware should pass through
	if w.Code != http.StatusOK {
		t.Errorf("Expected pass-through with no DB, got status %d", w.Code)
	}
}

func TestPlaceholderHandlersReturn501(t *testing.T) {
	r := gin.New()
	r.GET("/chats", handleListChats)
	r.POST("/chats", handleCreateChat)

	w := httptest.NewRecorder()
	req, _ := http.NewRequest("GET", "/chats", nil)
	r.ServeHTTP(w, req)

	if w.Code != 501 {
		t.Errorf("Expected 501 for unimplemented handler, got %d", w.Code)
	}
}