package main

import (
	"context"
	"fmt"
	"log"
	"os"

	"moku-backend/internal/config"
	"moku-backend/internal/database"
	"moku-backend/internal/posixproj"
)

func main() {
	command := "rebuild"
	if len(os.Args) > 1 {
		command = os.Args[1]
	}

	switch command {
	case "rebuild":
		if err := rebuildProjection(context.Background()); err != nil {
			log.Fatalf("rebuild POSIX projection: %v", err)
		}
	default:
		log.Fatalf("unsupported posix command %q (supported: rebuild)", command)
	}
}

func rebuildProjection(ctx context.Context) error {
	cfg := config.Load()

	db, err := database.NewPostgres(cfg.PostgresURL)
	if err != nil {
		return fmt.Errorf("connect database: %w", err)
	}
	defer db.Close()

	summary, err := posixproj.NewProjector(db, cfg.POSIXRoot).RebuildWithSummary(ctx)
	if err != nil {
		return err
	}

	fmt.Printf(
		"POSIX projection rebuilt from %s\n  total nodes: %d\n  directories: %d\n  files: %d\n",
		cfg.POSIXRoot,
		summary.TotalNodes,
		summary.DirectoryCount,
		summary.FileCount,
	)
	return nil
}