package routes

import (
	"context"
	"enshi/middleware"
	"enshi/middleware/getters"
	"enshi/routes/authRoutes"
	"enshi/routes/blogRoutes"
	bookmarksroutes "enshi/routes/bookmarksRoutes"
	"enshi/routes/postsRoutes"
	"enshi/routes/userProfileRoutes"
	userroutes "enshi/routes/userRoutes"
	voteroutes "enshi/routes/voteRoutes"
	"log"
	"net/http"
	"os"
	"strings"

	"github.com/gin-gonic/gin"

	"go.opentelemetry.io/contrib/instrumentation/github.com/gin-gonic/gin/otelgin"
	"go.opentelemetry.io/otel"
	"go.opentelemetry.io/otel/attribute"
	"go.opentelemetry.io/otel/exporters/otlp/otlptrace"
	"go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc"
	"google.golang.org/grpc/credentials"

	"go.opentelemetry.io/otel/sdk/resource"
	sdktrace "go.opentelemetry.io/otel/sdk/trace"
)

var (
	serviceName  = os.Getenv("SERVICE_NAME")
	collectorURL = os.Getenv("OTEL_EXPORTER_OTLP_ENDPOINT")
	insecure     = os.Getenv("INSECURE_MODE")
)

func testCookie(c *gin.Context) {
	cock, _ := c.Cookie("auth_cookie")
	c.IndentedJSON(http.StatusOK, gin.H{"token": "SLESAR' U STASA " + strings.Split(cock, "_")[0]})
}

func testAdmin(c *gin.Context) {
	c.IndentedJSON(http.StatusOK, gin.H{"message": "you are an admin, congrats!"})
}

func testAuth(c *gin.Context) {
	userInfo, err := getters.GetClaimsFromContext(c)
	if err != nil {
		c.IndentedJSON(http.StatusUnauthorized, gin.H{"message": "you are not logged in"})

	}
	c.IndentedJSON(
		http.StatusOK,
		gin.H{
			"message":  "you are logged in, congrats!",
			"username": userInfo.Username,
			"is_admin": userInfo.IsAdmin,
			"id":       userInfo.Id,
		},
	)
}

func initTracer() func(context.Context) error {

	var secureOption otlptracegrpc.Option

	if strings.ToLower(insecure) == "false" || insecure == "0" || strings.ToLower(insecure) == "f" {
		secureOption = otlptracegrpc.WithTLSCredentials(credentials.NewClientTLSFromCert(nil, ""))
	} else {
		secureOption = otlptracegrpc.WithInsecure()
	}

	exporter, err := otlptrace.New(
		context.Background(),
		otlptracegrpc.NewClient(
			secureOption,
			otlptracegrpc.WithEndpoint(collectorURL),
		),
	)

	if err != nil {
		log.Fatalf("Failed to create exporter: %v", err)
	}
	resources, err := resource.New(
		context.Background(),
		resource.WithAttributes(
			attribute.String("service.name", serviceName),
			attribute.String("library.language", "go"),
		),
	)
	if err != nil {
		log.Fatalf("Could not set resources: %v", err)
	}

	otel.SetTracerProvider(
		sdktrace.NewTracerProvider(
			sdktrace.WithSampler(sdktrace.AlwaysSample()),
			sdktrace.WithBatcher(exporter),
			sdktrace.WithResource(resources),
		),
	)
	return exporter.Shutdown
}

func SetupRotes(g *gin.Engine) error {
	InitMiddlewareProvider()

	cleanup := initTracer()
	defer cleanup(context.Background())

	g.Use(otelgin.Middleware(serviceName))
	g.Use(middleware.CORSMiddleware())
	g.Use(middleware.TargetMiddleware())

	testGroup := g.Group("/test/")
	testGroup.Use(MiddlewareProvider.GetMiddleware(POST_MIDDLEWARE))

	testGroup.GET(
		"posts/:post-id",
		postsRoutes.GetPost,
	)

	testGroup.GET(
		"posts/random",
		postsRoutes.GetRandomPost,
	)

	testGroup.PUT(
		"posts/:post-id",
		postsRoutes.UpdatePost,
	)
	testGroup.POST(
		"posts",
		postsRoutes.CreatePost,
	)
	testGroup.DELETE(
		"posts/:post-id",
		postsRoutes.DeletePost,
	)

	// Free group routes
	freeGroup := g.Group("/")

	freeGroup.GET("getCookie", testCookie)

	freeGroup.POST(
		"login",
		authRoutes.Login,
	)
	freeGroup.POST(
		"users",
		authRoutes.RegisterUser,
	)

	postsGroup := g.Group("/")
	postsGroup.Use(middleware.PostsMiddleware())

	postsGroup.GET(
		"posts/:post-id",
		postsRoutes.GetPost,
	)

	postsGroup.GET(
		"posts/random",
		postsRoutes.GetRandomPost,
	)

	postsGroup.PUT(
		"posts/:post-id",
		postsRoutes.UpdatePost,
	)
	postsGroup.PUT(
		"posts/:post-id/blogs/:blog-id",
		postsRoutes.UpdatePostBlog,
	)
	postsGroup.POST(
		"posts",
		postsRoutes.CreatePost,
	)
	postsGroup.DELETE(
		"posts/:post-id",
		postsRoutes.DeletePost,
	)
	postsGroup.DELETE(
		"posts/:post-id/blogs",
		postsRoutes.DeletePostBlog,
	)

	blogGroup := g.Group("/")
	blogGroup.Use(MiddlewareProvider.GetMiddleware(BLOG_MIDDLEWARE))

	blogGroup.POST(
		"blogs",
		blogRoutes.CreateBlog,
	)

	blogGroup.PUT(
		"blogs/:blog-id",
		blogRoutes.UpdateBlog,
	)

	blogGroup.DELETE(
		"blogs/:blog-id",
		blogRoutes.DeleteBlog,
	)

	blogGroup.GET(
		"blogs/:blog-id",
		blogRoutes.GetBlog,
	)

	profilesGroup := g.Group("/")
	profilesGroup.Use(middleware.ProfileMiddleware())

	profilesGroup.PUT(
		"profiles",
		userProfileRoutes.UpdateUserProfile,
	)

	bookmarksGroup := g.Group("/")
	bookmarksGroup.Use(middleware.BookmarksMiddleware())

	bookmarksGroup.POST(
		"bookmarks/:post-id",
		bookmarksroutes.CreateBookmark,
	)

	bookmarksGroup.DELETE(
		"bookmarks/:post-id",
		bookmarksroutes.DeleteBookmark,
	)

	bookmarksGroup.GET(
		"bookmarks/:post-id",
		bookmarksroutes.GetBookmark,
	)

	postVoteGroup := g.Group("/")
	postVoteGroup.Use(middleware.PostVotesMiddleware())

	postVoteGroup.POST(
		"post-votes/:post-id",
		voteroutes.CreateVote,
	)

	postVoteGroup.DELETE(
		"post-votes/:post-id",
		voteroutes.DeleteVote,
	)

	postVoteGroup.GET(
		"post-vote/:post-id",
		voteroutes.GetVote,
	)

	postVoteGroup.GET(
		"post-votes/:post-id",
		voteroutes.GetVotes,
	)

	userGroup := g.Group("/users/")
	userGroup.Use(MiddlewareProvider.GetMiddleware(USER_MIDDLEWARE))

	userGroup.GET(
		"/info/:user-id",
		userroutes.GetUserInfo,
	)

	// Admin group routes
	adminGroup := g.Group("/admin/")
	adminGroup.Use(middleware.AdminMiddleware())

	adminGroup.GET("check", testAdmin)

	authGroup := g.Group("/auth/")
	authGroup.Use(middleware.AuthMiddleware())
	authGroup.GET("check", testAuth)

	authGroup.DELETE(
		"logout",
		authRoutes.Logout,
	)

	temporal := g.Group("/")
	temporal.Use(middleware.AuthMiddleware())

	temporal.GET(
		"/user/blogs",
		blogRoutes.GetUserBlogs,
	)

	freeGroup.GET(
		"/user/:user-id",
		userroutes.GetUserUsername,
	)

	return nil
}