@libsql/sqlite3/lib/statement.js

node-sqlite3-compatible API for libSQL

"use strict";
var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
    if (k2 === undefined) k2 = k;
    var desc = Object.getOwnPropertyDescriptor(m, k);
    if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) {
      desc = { enumerable: true, get: function() { return m[k]; } };
    }
    Object.defineProperty(o, k2, desc);
}) : (function(o, m, k, k2) {
    if (k2 === undefined) k2 = k;
    o[k2] = m[k];
}));
var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
    Object.defineProperty(o, "default", { enumerable: true, value: v });
}) : function(o, v) {
    o["default"] = v;
});
var __importStar = (this && this.__importStar) || function (mod) {
    if (mod && mod.__esModule) return mod;
    var result = {};
    if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
    __setModuleDefault(result, mod);
    return result;
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.Statement = void 0;
const node_buffer_1 = require("node:buffer");
const node_events_1 = require("node:events");
const hrana = __importStar(require("@libsql/hrana-client"));
class Statement extends node_events_1.EventEmitter {
    #database;
    #stmt;
    lastID;
    changes;
    /** @private */
    constructor(database, sql) {
        super();
        this.#database = database;
        this.#stmt = new hrana.Stmt(sql);
        this.lastID = NaN;
        this.changes = 0;
    }
    bind(...args) {
        this.#stmt.unbindAll();
        const callback = bindArgs(this.#stmt, args);
        this.#database._enqueue(() => Promise.resolve(null).then(callback));
        return this;
    }
    reset(callback) {
        this.#database._enqueue(() => Promise.resolve(null).then(callback));
        return this;
    }
    finalize(callback) {
        this.#database._enqueue(() => Promise.resolve(null).then(callback));
        return this.#database;
    }
    run(...args) {
        const callback = bindArgs(this.#stmt, args);
        this.#database._enqueueStream((stream) => stream.run(this.#stmt)
            .then((stmtResult) => {
            this.#setRunResult(stmtResult);
            if (callback !== undefined) {
                callback.apply(this, [null]);
            }
        })
            .catch((e) => {
            if (callback !== undefined) {
                callback.apply(this, [e]);
            }
        }));
        return this;
    }
    get(...args) {
        const callback = bindArgs(this.#stmt, args);
        this.#database._enqueueStream((stream) => stream.queryRow(this.#stmt)
            .then((rowResult) => {
            this.#setRunResult(rowResult);
            if (callback !== undefined) {
                callback.apply(this, [null, rowResult.row]);
            }
        })
            .catch((e) => {
            if (callback !== undefined) {
                callback.apply(this, [e]);
            }
        }));
        return this;
    }
    all(...args) {
        const callback = bindArgs(this.#stmt, args);
        this.#database._enqueueStream((stream) => stream.query(this.#stmt)
            .then((rowsResult) => {
            this.#setRunResult(rowsResult);
            if (callback !== undefined) {
                callback.apply(this, [null, rowsResult.rows]);
            }
        })
            .catch((e) => {
            if (callback !== undefined) {
                callback.apply(this, [e, []]);
            }
        }));
        return this;
    }
    map(...args) {
        const callback = bindArgs(this.#stmt, args);
        this.#database._enqueueStream((stream) => stream.query(this.#stmt)
            .then((rowsResult) => {
            this.#setRunResult(rowsResult);
            if (callback !== undefined) {
                const resultObj = mapRowsToObject(rowsResult);
                callback.apply(this, [null, resultObj]);
            }
        })
            .catch((e) => {
            if (callback !== undefined) {
                callback.apply(this, [e, []]);
            }
        }));
        return this;
    }
    each(...args) {
        let completeCallback;
        if (args.length >= 2 && typeof args[args.length - 1] === "function" &&
            typeof args[args.length - 2] == "function") {
            completeCallback = args.pop();
        }
        const rowCallback = bindArgs(this.#stmt, args);
        this.#database._enqueueStream((stream) => stream.query(this.#stmt)
            .then((rowsResult) => {
            this.#setRunResult(rowsResult);
            if (rowCallback !== undefined) {
                for (const row of rowsResult.rows) {
                    rowCallback.apply(this, [null, row]);
                }
            }
            if (completeCallback !== undefined) {
                completeCallback(null, rowsResult.rows.length);
            }
        })
            .catch((e) => {
            if (rowCallback !== undefined) {
                rowCallback.apply(this, [e, []]);
            }
            if (completeCallback !== undefined) {
                completeCallback(e, 0);
            }
        }));
        return this;
    }
    #setRunResult(result) {
        this.lastID = +(result.lastInsertRowid ?? "NaN");
        this.changes = result.affectedRowCount;
    }
}
exports.Statement = Statement;
// this logic is taken from `Statement::Bind` in `node-sqlite3/src/statement.cc`
function bindArgs(stmt, args) {
    let callback = undefined;
    if (args.length > 0 && typeof args[args.length - 1] === "function") {
        callback = args.pop();
    }
    if (args.length > 0) {
        stmt.unbindAll();
        const arg0 = args[0];
        if (Array.isArray(arg0)) {
            for (let i = 0; i < arg0.length; ++i) {
                if (arg0[i] !== undefined) {
                    stmt.bindIndex(i + 1, arg0[i]);
                }
            }
        }
        else if (typeof arg0 !== "object" || arg0 instanceof RegExp
            || arg0 instanceof Date || node_buffer_1.Buffer.isBuffer(arg0)) {
            for (let i = 0; i < args.length; ++i) {
                if (args[i] !== undefined) {
                    stmt.bindIndex(i + 1, args[i]);
                }
            }
        }
        else if (typeof arg0 === "object") {
            for (let name in arg0) {
                if (arg0[name] !== undefined) {
                    stmt.bindName(name, arg0[name]);
                }
            }
        }
        else {
            throw new TypeError("Unsupported type of argument");
        }
    }
    return callback;
}
function mapRowsToObject(rowsResult) {
    const resultObj = {};
    const columnCount = rowsResult.columnNames.length;
    rowsResult.rows.forEach((row) => {
        let value;
        if (columnCount === 2) {
            value = row[1];
        }
        else if (columnCount === 1) {
            value = undefined;
        }
        else {
            value = row;
        }
        resultObj[row[0]] = value;
    });
    return resultObj;
}