package main

import (
	"context"
	"git.aiterp.net/stufflog/server/database"
	"git.aiterp.net/stufflog/server/graph"
	"git.aiterp.net/stufflog/server/internal/generate"
	"git.aiterp.net/stufflog/server/internal/xlerrors"
	"git.aiterp.net/stufflog/server/models"
	"git.aiterp.net/stufflog/server/services"
	"github.com/99designs/gqlgen/graphql/playground"
	"github.com/gin-gonic/gin"
	"github.com/pkg/errors"
	"github.com/pressly/goose"
	"github.com/urfave/cli/v2"
	"log"
	"os"
	"os/signal"
	"sort"
	"syscall"
	"time"
)

func main() {
	app := &cli.App{
		Name:  "stufflog",
		Usage: "Issue tracker for your home and hobbies",
		Flags: []cli.Flag{
			&cli.StringFlag{
				Name:    "db-driver",
				Value:   "mysql",
				Usage:   "Database driver",
				EnvVars: []string{"DATABASE_DRIVER"},
			},
			&cli.StringFlag{
				Name:    "db-connect",
				Value:   "stufflog_user:stuff1234@(localhost:3306)/stufflog",
				Usage:   "Database connection string or path",
				EnvVars: []string{"DATABASE_CONNECT"},
			},
			&cli.StringFlag{
				Name:    "listen",
				Value:   ":8000",
				Usage:   "Address to bind the server to.",
				EnvVars: []string{"SERVER_LISTEN"},
			},
		},
		Commands: []*cli.Command{
			{
				Name:  "reset-admin",
				Usage: "Reset the admin user (or create it)",
				Action: func(c *cli.Context) error {
					db, err := database.Open(c.String("db-driver"), c.String("db-connect"))
					if err != nil {
						return errors.Wrap(err, "Failed to connect to database")
					}

					timeout, cancel := context.WithTimeout(context.Background(), time.Second*5)
					defer cancel()

					newPass := generate.Generate(20, "")

					admin, err := db.Users().Find(timeout, "Admin")
					if xlerrors.IsNotFound(err) {
						admin = &models.User{
							ID:     "Admin",
							Name:   "Administrator",
							Active: true,
							Admin:  true,
						}

						err = admin.SetPassword(newPass)
						if err != nil {
							return errors.Wrap(err, "Failed to set password")
						}

						_, err = db.Users().Insert(timeout, *admin)
						if err != nil {
							return errors.Wrap(err, "Failed to inset user")
						}
					} else if err != nil {
						return err
					} else {
						err = admin.SetPassword(newPass)
						if err != nil {
							return errors.Wrap(err, "Failed to set password")
						}

						err = db.Users().Save(timeout, *admin)
						if err != nil {
							return errors.Wrap(err, "Failed to save user")
						}
					}

					log.Println("Username:", admin.ID)
					log.Println("Password:", newPass)

					return nil
				},
			},
			{
				Name:  "migrate",
				Usage: "Migrate the configured database",
				Action: func(c *cli.Context) error {
					db, err := database.Open(c.String("db-driver"), c.String("db-connect"))
					if err != nil {
						return errors.Wrap(err, "Failed to connect to database")
					}

					err = db.Migrate()
					if err == goose.ErrNoNextVersion {
						log.Println("No more migrations to run")
					} else if err != nil {
						return errors.Wrap(err, "Failed to run migration")
					}

					log.Println("Migration succeeded")

					return nil
				},
			},
			{
				Name:  "server",
				Usage: "Run the server",
				Action: func(c *cli.Context) error {
					db, err := database.Open(c.String("db-driver"), c.String("db-connect"))
					if err != nil {
						return errors.Wrap(err, "Failed to connect to database")
					}

					bundle := services.NewBundle(db)

					server := gin.New()
					server.GET("/graphql", graph.Gin(bundle, db))
					server.POST("/graphql", graph.Gin(bundle, db))
					server.GET("/playground", gin.WrapH(playground.Handler("StuffLog GraphQL Playground", "/graphql")))

					exitSignal := make(chan os.Signal)
					signal.Notify(exitSignal, os.Interrupt, os.Kill, syscall.SIGTERM)

					errCh := make(chan error)
					go func() {
						err := server.Run(c.String("listen"))
						if err != nil {
							errCh <- err
						}
					}()

					select {
					case signal := <-exitSignal:
						{
							log.Println("Received signal", signal)
							return nil
						}
					case err := <-errCh:
						{
							return err
						}
					}
				},
			},
		},
	}

	sort.Sort(cli.FlagsByName(app.Flags))
	sort.Sort(cli.CommandsByName(app.Commands))

	err := app.Run(os.Args)
	if err != nil {
		log.Fatal(err)
	}
}