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import Database from "libsql";
import { Buffer } from "node:buffer";
import { LibsqlError } from "@libsql/core/api";
import { expandConfig, isInMemoryConfig } from "@libsql/core/config";
import { supportedUrlLink, transactionModeToBegin, ResultSetImpl, } from "@libsql/core/util";
export * from "@libsql/core/api";
export function createClient(config) {
return _createClient(expandConfig(config, true));
}
/** @private */
export function _createClient(config) {
if (config.scheme !== "file") {
throw new LibsqlError(`URL scheme ${JSON.stringify(config.scheme + ":")} is not supported by the local sqlite3 client. ` +
`For more information, please read ${supportedUrlLink}`, "URL_SCHEME_NOT_SUPPORTED");
}
const authority = config.authority;
if (authority !== undefined) {
const host = authority.host.toLowerCase();
if (host !== "" && host !== "localhost") {
throw new LibsqlError(`Invalid host in file URL: ${JSON.stringify(authority.host)}. ` +
'A "file:" URL with an absolute path should start with one slash ("file:/absolute/path.db") ' +
'or with three slashes ("file:///absolute/path.db"). ' +
`For more information, please read ${supportedUrlLink}`, "URL_INVALID");
}
if (authority.port !== undefined) {
throw new LibsqlError("File URL cannot have a port", "URL_INVALID");
}
if (authority.userinfo !== undefined) {
throw new LibsqlError("File URL cannot have username and password", "URL_INVALID");
}
}
let isInMemory = isInMemoryConfig(config);
if (isInMemory && config.syncUrl) {
throw new LibsqlError(`Embedded replica must use file for local db but URI with in-memory mode were provided instead: ${config.path}`, "URL_INVALID");
}
let path = config.path;
if (isInMemory) {
// note: we should prepend file scheme in order for SQLite3 to recognize :memory: connection query parameters
path = `${config.scheme}:${config.path}`;
}
const options = {
authToken: config.authToken,
encryptionKey: config.encryptionKey,
syncUrl: config.syncUrl,
syncPeriod: config.syncInterval,
};
const db = new Database(path, options);
executeStmt(db, "SELECT 1 AS checkThatTheDatabaseCanBeOpened", config.intMode);
return new Sqlite3Client(path, options, db, config.intMode);
}
export class Sqlite3Client {
#path;
#options;
#db;
#intMode;
closed;
protocol;
/** @private */
constructor(path, options, db, intMode) {
this.#path = path;
this.#options = options;
this.#db = db;
this.#intMode = intMode;
this.closed = false;
this.protocol = "file";
}
async execute(stmtOrSql, args) {
let stmt;
if (typeof stmtOrSql === "string") {
stmt = {
sql: stmtOrSql,
args: args || [],
};
}
else {
stmt = stmtOrSql;
}
this.#checkNotClosed();
return executeStmt(this.#getDb(), stmt, this.#intMode);
}
async batch(stmts, mode = "deferred") {
this.#checkNotClosed();
const db = this.#getDb();
try {
executeStmt(db, transactionModeToBegin(mode), this.#intMode);
const resultSets = stmts.map((stmt) => {
if (!db.inTransaction) {
throw new LibsqlError("The transaction has been rolled back", "TRANSACTION_CLOSED");
}
return executeStmt(db, stmt, this.#intMode);
});
executeStmt(db, "COMMIT", this.#intMode);
return resultSets;
}
finally {
if (db.inTransaction) {
executeStmt(db, "ROLLBACK", this.#intMode);
}
}
}
async transaction(mode = "write") {
const db = this.#getDb();
executeStmt(db, transactionModeToBegin(mode), this.#intMode);
this.#db = null; // A new connection will be lazily created on next use
return new Sqlite3Transaction(db, this.#intMode);
}
async executeMultiple(sql) {
this.#checkNotClosed();
const db = this.#getDb();
try {
return executeMultiple(db, sql);
}
finally {
if (db.inTransaction) {
executeStmt(db, "ROLLBACK", this.#intMode);
}
}
}
async sync() {
this.#checkNotClosed();
await this.#getDb().sync();
}
close() {
this.closed = true;
if (this.#db !== null) {
this.#db.close();
}
}
#checkNotClosed() {
if (this.closed) {
throw new LibsqlError("The client is closed", "CLIENT_CLOSED");
}
}
// Lazily creates the database connection and returns it
#getDb() {
if (this.#db === null) {
this.#db = new Database(this.#path, this.#options);
}
return this.#db;
}
}
export class Sqlite3Transaction {
#database;
#intMode;
/** @private */
constructor(database, intMode) {
this.#database = database;
this.#intMode = intMode;
}
async execute(stmtOrSql, args) {
let stmt;
if (typeof stmtOrSql === "string") {
stmt = {
sql: stmtOrSql,
args: args || [],
};
}
else {
stmt = stmtOrSql;
}
this.#checkNotClosed();
return executeStmt(this.#database, stmt, this.#intMode);
}
async batch(stmts) {
return stmts.map((stmt) => {
this.#checkNotClosed();
return executeStmt(this.#database, stmt, this.#intMode);
});
}
async executeMultiple(sql) {
this.#checkNotClosed();
return executeMultiple(this.#database, sql);
}
async rollback() {
if (!this.#database.open) {
return;
}
this.#checkNotClosed();
executeStmt(this.#database, "ROLLBACK", this.#intMode);
}
async commit() {
this.#checkNotClosed();
executeStmt(this.#database, "COMMIT", this.#intMode);
}
close() {
if (this.#database.inTransaction) {
executeStmt(this.#database, "ROLLBACK", this.#intMode);
}
}
get closed() {
return !this.#database.inTransaction;
}
#checkNotClosed() {
if (this.closed) {
throw new LibsqlError("The transaction is closed", "TRANSACTION_CLOSED");
}
}
}
function executeStmt(db, stmt, intMode) {
let sql;
let args;
if (typeof stmt === "string") {
sql = stmt;
args = [];
}
else {
sql = stmt.sql;
if (Array.isArray(stmt.args)) {
args = stmt.args.map((value) => valueToSql(value, intMode));
}
else {
args = {};
for (const name in stmt.args) {
const argName = name[0] === "@" || name[0] === "$" || name[0] === ":"
? name.substring(1)
: name;
args[argName] = valueToSql(stmt.args[name], intMode);
}
}
}
try {
const sqlStmt = db.prepare(sql);
sqlStmt.safeIntegers(true);
let returnsData = true;
try {
sqlStmt.raw(true);
}
catch {
// raw() throws an exception if the statement does not return data
returnsData = false;
}
if (returnsData) {
const columns = Array.from(sqlStmt.columns().map((col) => col.name));
const columnTypes = Array.from(sqlStmt.columns().map((col) => col.type ?? ""));
const rows = sqlStmt.all(args).map((sqlRow) => {
return rowFromSql(sqlRow, columns, intMode);
});
// TODO: can we get this info from better-sqlite3?
const rowsAffected = 0;
const lastInsertRowid = undefined;
return new ResultSetImpl(columns, columnTypes, rows, rowsAffected, lastInsertRowid);
}
else {
const info = sqlStmt.run(args);
const rowsAffected = info.changes;
const lastInsertRowid = BigInt(info.lastInsertRowid);
return new ResultSetImpl([], [], [], rowsAffected, lastInsertRowid);
}
}
catch (e) {
throw mapSqliteError(e);
}
}
function rowFromSql(sqlRow, columns, intMode) {
const row = {};
// make sure that the "length" property is not enumerable
Object.defineProperty(row, "length", { value: sqlRow.length });
for (let i = 0; i < sqlRow.length; ++i) {
const value = valueFromSql(sqlRow[i], intMode);
Object.defineProperty(row, i, { value });
const column = columns[i];
if (!Object.hasOwn(row, column)) {
Object.defineProperty(row, column, {
value,
enumerable: true,
configurable: true,
writable: true,
});
}
}
return row;
}
function valueFromSql(sqlValue, intMode) {
if (typeof sqlValue === "bigint") {
if (intMode === "number") {
if (sqlValue < minSafeBigint || sqlValue > maxSafeBigint) {
throw new RangeError("Received integer which cannot be safely represented as a JavaScript number");
}
return Number(sqlValue);
}
else if (intMode === "bigint") {
return sqlValue;
}
else if (intMode === "string") {
return "" + sqlValue;
}
else {
throw new Error("Invalid value for IntMode");
}
}
else if (sqlValue instanceof Buffer) {
return sqlValue.buffer;
}
return sqlValue;
}
const minSafeBigint = -9007199254740991n;
const maxSafeBigint = 9007199254740991n;
function valueToSql(value, intMode) {
if (typeof value === "number") {
if (!Number.isFinite(value)) {
throw new RangeError("Only finite numbers (not Infinity or NaN) can be passed as arguments");
}
return value;
}
else if (typeof value === "bigint") {
if (value < minInteger || value > maxInteger) {
throw new RangeError("bigint is too large to be represented as a 64-bit integer and passed as argument");
}
return value;
}
else if (typeof value === "boolean") {
switch (intMode) {
case "bigint":
return value ? 1n : 0n;
case "string":
return value ? "1" : "0";
default:
return value ? 1 : 0;
}
}
else if (value instanceof ArrayBuffer) {
return Buffer.from(value);
}
else if (value instanceof Date) {
return value.valueOf();
}
else if (value === undefined) {
throw new TypeError("undefined cannot be passed as argument to the database");
}
else {
return value;
}
}
const minInteger = -9223372036854775808n;
const maxInteger = 9223372036854775807n;
function executeMultiple(db, sql) {
try {
db.exec(sql);
}
catch (e) {
throw mapSqliteError(e);
}
}
function mapSqliteError(e) {
if (e instanceof Database.SqliteError) {
return new LibsqlError(e.message, e.code, e.rawCode, e);
}
return e;
}