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100 lines
2.5 KiB
Go
100 lines
2.5 KiB
Go
package db
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import (
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"database/sql"
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"fmt"
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"os"
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_ "github.com/mattn/go-sqlite3"
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)
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type SQLite struct {
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db *sql.DB
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}
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func OpenSQLite(path string) (*SQLite, error) {
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db, err := sql.Open("sqlite3", path)
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if err != nil {
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return nil, fmt.Errorf("unable to open sqlite3 database at %s: %w", path, err)
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}
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if _, err := db.Exec(`pragma foreign_keys = on;`); err != nil {
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fmt.Fprintf(os.Stderr, "failed to enforce foreign key constraints: %v\n", err)
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}
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if _, err := db.Exec(`
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create table if not exists players (
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id integer primary key autoincrement,
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name text unique not null,
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phash text not null,
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psalt text not null
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);`); err != nil {
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fmt.Fprintf(os.Stderr, "failed to create players table: %v\n", err)
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}
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db.Exec(`insert or ignore
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into players (id, name, phash, psalt)
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values (0, "admin", "", "")`)
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if _, err := db.Exec(`
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create table if not exists bodies (
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id integer primary key autoincrement,
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player integer not null,
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x real not null,
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y real not null,
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z real not null,
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died_at datetime default current_timestamp not null,
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found_at datetime,
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found_by integer,
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foreign key (player) references players(id),
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foreign key (found_by) references players(id)
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);`); err != nil {
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fmt.Fprintf(os.Stderr, "failed to create bodies table: %v\n", err)
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}
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return &SQLite{db: db}, nil
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}
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func (db *SQLite) CreatePlayer(p *Player) error {
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if _, err := db.db.Exec(`
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insert into players (name, phash, psalt)
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values (?, ?, ?);
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`, p.Name, p.Hash, p.Salt); err != nil {
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return fmt.Errorf("unable to insert user: %w", err)
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}
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row := db.db.QueryRow(`select id from players where name = ?`, p.Name)
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if err := row.Scan(&p.ID); err != nil {
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return fmt.Errorf("unable to scan user ID: %w", err)
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}
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return nil
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}
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func (db *SQLite) ReadPlayer(p *Player) error {
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args := make([]interface{}, 0, 1)
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q := `select id, name, phash, psalt from players `
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if p.ID != 0 {
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q += `where id = ?`
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args = append(args, p.ID)
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} else {
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q += `where name = ?`
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args = append(args, p.Name)
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}
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row := db.db.QueryRow(q, args...)
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if err := row.Scan(&p.ID, &p.Name, &p.Hash, &p.Salt); err != nil {
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return fmt.Errorf("unable to read player row: %w", err)
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}
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return nil
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}
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func (db *SQLite) UpdatePlayer(p *Player) error {
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q := `update players set name = ?, phash = ?, pstalt = ? where id = ?`
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args := []interface{}{p.Name, p.Hash, p.Salt, p.ID}
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if _, err := db.db.Exec(q, args...); err != nil {
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return fmt.Errorf("unable to update player %s: %w", *p, err)
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}
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return nil
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}
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func (db *SQLite) Close() error { return db.db.Close() }
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