access-db/lib/fastdb/set.js

[统一数据库的连接]Unified access to all kinds of databases

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const pathTo_1 = require("../utils/pathTo");
const timeHash_1 = require("../utils/timeHash");
const error_1 = require("../constants/error");
const utils_1 = require("../utils/utils");
const fs = require('fs');
function fetchSet(table, params = {}) {
    const filePath = (0, pathTo_1.pathTo)(table);
    let oldBuf, tempParams = Object.assign({}, params);
    if (!fs.existsSync(filePath)) {
        (0, pathTo_1.mkdir)(filePath, '[]');
    }
    if (!tempParams.id) {
        tempParams = Object.assign({ id: (0, timeHash_1.strHash)() }, tempParams);
    }
    else {
        const tempid = tempParams.id;
        delete tempParams.id;
        tempParams = Object.assign({ id: tempid }, tempParams);
    }
    oldBuf = fs.readFileSync(filePath);
    if ((0, utils_1.isNumber)(tempParams.id)) {
        if (oldBuf.includes(`"id":${tempParams.id}`)) {
            throw new Error(error_1.FASTDB_HAVE_ID_ERROR + ': ' + tempParams.id);
        }
    }
    else {
        if (oldBuf.includes(`"id":"${tempParams.id}"`)) {
            throw new Error(error_1.FASTDB_HAVE_ID_ERROR + ': ' + tempParams.id);
        }
    }
    let offset = oldBuf.length - 1;
    let nowBuf = Buffer.from((oldBuf.length === 2 ? '' : ',') + JSON.stringify((0, utils_1.changeSetParams)(tempParams)) + ']');
    let tempBuf = Buffer.concat([oldBuf, Buffer.allocUnsafe(nowBuf.length - 1)]);
    let addBuf = tempBuf.fill(nowBuf, offset);
    fs.writeFileSync(filePath, addBuf);
    return { data: { insertId: tempParams.id } };
}
exports.default = fetchSet;