package dbi

import (
	"database/sql"
	"os"

	_ "modernc.org/sqlite"
)

func GetDbConn() (*sql.DB, error) {
	const dbPath = "data/facultyactivity.sqlite"

	_, err := os.Stat(dbPath)
	if os.IsNotExist(err) {
		if err := os.MkdirAll("data", 0755); err != nil {
			return nil, err
		}
		db, err := sql.Open("sqlite", dbPath)
		if err != nil {
			return nil, err
		}
		if _, err := db.Exec(ActivityReportSchema); err != nil {
			db.Close()
			return nil, err
		}
		return db, nil
	}
	if err != nil {
		return nil, err
	}
	return sql.Open("sqlite", dbPath)
}