package main

import (
	"context"
	"fmt"
	"os"
	"time"

	"git.netcell-it.de/projekte/edgeguard-native/internal/database"
)

// cmdMigrate fans out to the subcommand handlers. `check` is offline
// (filename validation against the embedded FS) and is the safe
// pre-flight call from postinst — it catches duplicate version
// prefixes before the DB ever gets touched.
func cmdMigrate(args []string) int {
	if len(args) == 0 {
		fmt.Fprintln(os.Stderr, "Usage: edgeguard-ctl migrate up|down|check|dump [dir]")
		return 2
	}
	if args[0] == "check" {
		if err := database.ValidateMigrations(); err != nil {
			fmt.Fprintln(os.Stderr, "migrate check:", err)
			return 1
		}
		fmt.Println("embedded migrations OK")
		return 0
	}

	ctx, cancel := context.WithTimeout(context.Background(), 60*time.Second)
	defer cancel()

	switch args[0] {
	case "up":
		if err := database.Migrate(ctx, ""); err != nil {
			fmt.Fprintln(os.Stderr, "migrate up:", err)
			return 1
		}
		fmt.Println("migrations applied")
		return 0
	case "down":
		if err := database.MigrateDown(ctx, ""); err != nil {
			fmt.Fprintln(os.Stderr, "migrate down:", err)
			return 1
		}
		fmt.Println("one migration rolled back")
		return 0
	case "dump":
		dst := "./migrations"
		if len(args) >= 2 {
			dst = args[1]
		}
		if err := database.CopyEmbeddedMigrationsTo(dst); err != nil {
			fmt.Fprintln(os.Stderr, "migrate dump:", err)
			return 1
		}
		fmt.Println("embedded migrations written to", dst)
		return 0
	default:
		fmt.Fprintln(os.Stderr, "Usage: edgeguard-ctl migrate up|down|check|dump [dir]")
		return 2
	}
}