package db

import (
	"database/sql"
	"fmt"
	"os"
	"path/filepath"

	_ "modernc.org/sqlite"
)

func Open(dbPath string) (*sql.DB, error) {
	dir := filepath.Dir(dbPath)
	if err := os.MkdirAll(dir, 0700); err != nil {
		return nil, fmt.Errorf("create db directory: %w", err)
	}

	db, err := sql.Open("sqlite", dbPath)
	if err != nil {
		return nil, fmt.Errorf("open database: %w", err)
	}

	if _, err := db.Exec("PRAGMA journal_mode=WAL"); err != nil {
		db.Close()
		return nil, fmt.Errorf("set WAL mode: %w", err)
	}

	if _, err := db.Exec("PRAGMA busy_timeout=5000"); err != nil {
		db.Close()
		return nil, fmt.Errorf("set busy_timeout: %w", err)
	}

	if _, err := db.Exec("PRAGMA foreign_keys=ON"); err != nil {
		db.Close()
		return nil, fmt.Errorf("enable foreign keys: %w", err)
	}

	return db, nil
}