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storage.go
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storage.go
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package storage
import (
"database/sql"
"errors"
"fmt"
"log/slog"
"net/url"
"github.com/ErikKalkoken/evebuddy/internal/storage/queries"
)
var ErrNotFound = errors.New("object not found")
type Storage struct {
q *queries.Queries
db *sql.DB
}
// New returns a new storage object.
func New(db *sql.DB) *Storage {
r := &Storage{q: queries.New(db), db: db}
return r
}
// InitDB initializes the database and returns it.
func InitDB(dsn string) (*sql.DB, error) {
v := url.Values{}
v.Add("_fk", "on")
v.Add("_journal_mode", "WAL")
v.Add("_synchronous", "normal")
dsn2 := fmt.Sprintf("%s?%s", dsn, v.Encode())
slog.Debug("Connecting to sqlite", "dsn", dsn2)
db, err := sql.Open("sqlite3", dsn2)
if err != nil {
return nil, err
}
slog.Info(fmt.Sprintf("Connected to database: %s", dsn))
hasSchema, err := schemaExists(db)
if err != nil {
return nil, err
}
if !hasSchema {
_, err = db.Exec(queries.Schema())
if err != nil {
return nil, err
}
slog.Info("Database created")
}
return db, nil
}
func schemaExists(db *sql.DB) (bool, error) {
rows, err := db.Query("SELECT NAME from sqlite_master;")
if err != nil {
return false, err
}
for rows.Next() {
return true, nil
}
return false, nil
}