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store.go
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/
store.go
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package database // import "github.com/eriol/wp24-deities/database"
import (
"database/sql"
"os"
_ "github.com/mattn/go-sqlite3"
)
var database *sql.DB
// Open an SQLite3 database at the specified path.
func Open(path string) (err error) {
db, err := sql.Open("sqlite3", path)
if err != nil {
return err
}
database = db
if _, err := os.Stat(path); err != nil {
if os.IsNotExist(err) {
if err := createDatabase(); err != nil {
return err
}
}
}
return nil
}
// Close SQLite3 databaser.
func Close() error {
return database.Close()
}
func createDatabase() error {
tables := `
PRAGMA foreign_keys = ON;
CREATE TABLE IF NOT EXISTS deities (
deity_id TEXT NOT NULL PRIMARY KEY,
name TEXT COLLATE NOCASE,
description TEXT COLLATE NOCASE,
gender TEXT
);
CREATE TABLE IF NOT EXISTS sports (
sport_id TEXT NOT NULL PRIMARY KEY,
name TEXT COLLATE NOCASE
);
CREATE TABLE IF NOT EXISTS olympian_influence (
deity_id TEXT NOT NULL,
sport_id TEXT NOT NULL,
influence REAL,
FOREIGN KEY(deity_id) REFERENCES deities(deity_id)
FOREIGN KEY(sport_id) REFERENCES sports(sport_id)
);
`
_, err := database.Exec(tables)
if err != nil {
return err
}
return nil
}