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package db
import (
"database/sql"
"errors"
"log"
"os"
"time"
_ "github.com/mattn/go-sqlite3"
"github.com/yulqen/datamaps-go/pkg/reader"
)
func SetupDB(path string) (*sql.DB, error) {
stmt_base := `DROP TABLE IF EXISTS datamap;
CREATE TABLE datamap(id INTEGER PRIMARY KEY, name TEXT, date_created TEXT);
DROP TABLE IF EXISTS datamap_line;
CREATE TABLE datamap_line(
id INTEGER PRIMARY KEY,
dm_id INTEGER,
key TEXT NOT NULL,
sheet TEXT NOT NULL,
cellref TEXT,
FOREIGN KEY (dm_id)
REFERENCES datamap(id)
ON DELETE CASCADE
);
`
os.Create(path)
db, err := sql.Open("sqlite3", path)
if err != nil {
return db, errors.New("Cannot open that damn database file")
}
// We probably don't need pragma here but we have it for later.
pragma := "PRAGMA foreign_keys = ON;"
_, err = db.Exec(pragma)
if err != nil {
log.Printf("%q: %s\n", err, pragma)
}
_, err = db.Exec(stmt_base)
if err != nil {
log.Printf("%q: %s\n", err, stmt_base)
}
return db, nil
}
//DatamapToDB takes a slice of DatamapLine and writes it to a sqlite3 db file.
func DatamapToDB(data []reader.DatamapLine, dm_name string, dm_path string) error {
log.Printf("Importing Datamap")
db, err := SetupDB("/home/lemon/.config/datamaps-go/datamaps.db")
if err != nil {
return err
}
tx, err := db.Begin()
if err != nil {
return err
}
pragma := "PRAGMA foreign_keys = ON;"
_, err = db.Exec(pragma)
if err != nil {
log.Printf("%q: %s\n", err, pragma)
return err
}
stmt_dm, err := tx.Prepare("INSERT INTO datamap (name, date_created) VALUES(?,?)")
if err != nil {
return err
}
_, err = stmt_dm.Exec(dm_name, time.Now())
stmt_dml, err := tx.Prepare("INSERT INTO datamap_line (dm_id, key, sheet, cellref) VALUES(?,?,?,?);")
if err != nil {
return err
}
defer stmt_dm.Close()
defer stmt_dml.Close()
for _, dml := range data {
_, err = stmt_dml.Exec(1, dml.Key, dml.Sheet, dml.Cellref)
if err != nil {
return err
}
}
err = tx.Commit()
if err != nil {
return err
}
return nil
}
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