package cmd

import (
	"database/sql"
	"log"
	"net/http"

	"github.com/spf13/cobra"
	"github.com/spf13/viper"
	httpSwagger "github.com/swaggo/http-swagger"
	"github.com/uptrace/bun"
	"github.com/uptrace/bun/dialect/pgdialect"
	"github.com/uptrace/bun/driver/pgdriver"
	"github.com/uptrace/bun/extra/bunotel"
	"github.com/uptrace/bunrouter"
	"go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp"
	"go.uber.org/zap"

	"gitea.konchin.com/service/amane-tanikaze-dcbot/amane/handlers/api"
	_ "gitea.konchin.com/service/amane-tanikaze-dcbot/amane/handlers/docs"
	"gitea.konchin.com/service/amane-tanikaze-dcbot/amane/middlewares"
	"gitea.konchin.com/service/amane-tanikaze-dcbot/amane/tracing"
)

//	@Title			Amane Tanikaze Discord Bot Backend
//	@Version		2.0-alpha1
//	@TermsOfService	http://swagger.io/terms/

// @License.Name	0BSD
// @BasePath		/
var backendCmd = &cobra.Command{
	Use:   "backend",
	Short: "backend server",
	Run: func(cmd *cobra.Command, args []string) {
		ctx := cmd.Context()
		tracing.InitTracer()

		sqldb := sql.OpenDB(pgdriver.NewConnector(pgdriver.WithDSN(
			viper.GetString("pg-dsn"))))
		db := bun.NewDB(sqldb, pgdialect.New())
		db.AddQueryHook(bunotel.NewQueryHook(bunotel.WithDBName("PostgreSQL")))

		router := bunrouter.New()

		middlewaresHandlers := middlewares.NewHandlers(db)

		backend := router.NewGroup("").
			Use(middlewaresHandlers.ErrorHandler)

		if viper.GetBool("swagger") {
			backend.GET("/docs/*any",
				bunrouter.HTTPHandlerFunc(httpSwagger.Handler()))
		}

		apiHandlers := api.NewHandlers(db)

		apiGroup := backend.NewGroup("/api")
		apiGroup.GET("/image",
			apiHandlers.GetImage)

		tracing.Logger.Ctx(ctx).
			Info("http server up",
				zap.String("http.port", viper.GetString("port")))

		log.Println(http.ListenAndServe(":"+viper.GetString("port"),
			otelhttp.NewHandler(router, "")))
	},
}

func init() {
	backendCmd.Flags().
		String("port", "8080", "Port to listen on")

	backendCmd.Flags().
		String("pg-dsn",
			"postgres://amane:amane@postgres:5432/amane?sslmode=disable",
			"PostgreSQL connection string")

	backendCmd.Flags().
		Bool("zap-develop", false, "Enable development log")

	backendCmd.Flags().
		Bool("swagger", false, "Enable swagger")
}