102 lines
3.6 KiB
JavaScript
102 lines
3.6 KiB
JavaScript
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// Vibe coded since I needed more resources on my VPS :/
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const Database = require('better-sqlite3');
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// 1. Connect to the file (creates it if missing)
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const db = new Database('project.db');
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db.pragma('journal_mode = WAL'); // Faster, safer writes
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class FakeMssqlRequest {
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constructor(db) {
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this.db = db;
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this.params = {}; // Stores your inputs: .input('id', 123)
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}
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// Mimic the .input() method
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// We ignore 'type' because SQLite is loosely typed
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input(name, type, value) {
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// Handle case where value is passed as 2nd arg (omitting type)
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if (value === undefined) value = type;
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this.params[name] = value;
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return this; // Return 'this' to allow chaining (.input().input())
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}
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// Mimic the .query() method
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async query(sqlString) {
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try {
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let cleanSql = sqlString;
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// --- FIX 1: Handle TOP -> LIMIT ---
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// Regex detects: SELECT TOP (@amount) ... OR SELECT TOP 10 ...
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// It captures the value (@amount or 10)
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const topRegex = /SELECT\s+TOP\s*\(?(@?\w+)\)?/i;
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const topMatch = cleanSql.match(topRegex);
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if (topMatch) {
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const limitValue = topMatch[1]; // Extracts '@amount' or '10'
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// 1. Remove "TOP (@amount)" from the start
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cleanSql = cleanSql.replace(topRegex, 'SELECT ');
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// 2. Remove any trailing semicolon so we can append
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cleanSql = cleanSql.replace(/;\s*$/, '');
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// 3. Append LIMIT to the end
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cleanSql += ` LIMIT ${limitValue}`;
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}
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// 1. Compatibility Fixes (Optional but helpful)
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// Replace 'GETDATE()' with SQLite's "datetime('now')"
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cleanSql = cleanSql.replace(/GETDATE\(\)/gi, "datetime('now', 'localtime')")
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// MS SQL: SYSUTCDATETIME() -> SQLite: datetime('now') (Already UTC)
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.replace(/SYSUTCDATETIME\(\)/gi, "datetime('now')")
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// --- FIX 3: Clean up Square Brackets ---
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.replace(/\[/g, '"').replace(/\]/g, '"')
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// --- FIX 4: Handle String Concatenation in LIKE clauses ---
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// MSSQL: LIKE '%' + @param + '%'
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// SQLite: LIKE '%' || @param || '%'
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// This regex looks for: LIKE '%' + @anything + '%'
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.replace(/LIKE\s+'%'\s*\+\s*(@\w+)\s*\+\s*'%'/gi, "LIKE '%' || $1 || '%'");
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// 2. Determine if it's a SELECT or INSERT/UPDATE
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const stmt = this.db.prepare(cleanSql);
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if (cleanSql.trim().toUpperCase().startsWith('SELECT')) {
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// READ: Use .all()
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const rows = stmt.all(this.params);
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return { recordset: rows, rowsAffected: [rows.length] };
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} else {
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// WRITE: Use .run()
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const info = stmt.run(this.params);
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return { recordset: [], rowsAffected: [info.changes] };
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}
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} catch (err) {
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console.error("SQLite Error:", err.message);
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console.error("Query was:", sqlString);
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throw err;
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}
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}
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}
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// Mimic the main 'pool' object
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const pool = {
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connected: true,
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request: () => new FakeMssqlRequest(db),
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close: () => db.close()
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};
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module.exports = {
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// Mimic the sql.connect() function
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connect: async () => {
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console.log("Connected to SQLite (via Wrapper)");
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return pool;
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},
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// Export types to prevent "sql.Int is undefined" errors
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Int: 'Int',
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NVarChar: 'NVarChar',
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Bit: 'Bit',
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DateTime: 'DateTime'
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};
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