Added client scripts

api/.gitignore

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+/node_modules
+.env

api/Dockerfile

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+FROM node:alpine
+WORKDIR /app
+COPY . .
+RUN npm i
+CMD ["npm", "run", "start"]
+

api/config.json

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+{
+    "port": 3000
+}

api/docker-compose.yml

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+services:
+  api:
+    build:
+      context: .
+      dockerfile: Dockerfile 
+    container_name: api
+    restart: always
+    ports:
+      - 80:3000

api/index.js

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+const express = require("express");
+const fs = require("fs");
+const path = require("path");
+const config = require("./config");
+const cookieParser = require("cookie-parser");
+const cors = require("cors");
+require("dotenv").config()
+
+const app = express();
+const port = config.port || 3000;
+
+app.use(express.json());
+app.use(cookieParser());
+app.use(cors());
+
+function loadRoutes(folderName) {
+  const routesPath = path.join(__dirname, folderName);
+  const files = fs.readdirSync(routesPath);
+  files.forEach((file) => {
+    if (fs.lstatSync(path.join(routesPath, file)).isDirectory()) {
+      loadRoutes(`${folderName}/${file}`);
+      return;
+    }
+    const filePath = path.join(routesPath, file);
+    const route = require(filePath);
+    app.use(`/${folderName}/${file.split(".")[0]}`, route);
+  });
+}
+
+loadRoutes("api");
+
+app.listen(port, () => {
+  console.log(`Server listening on port ${port}`);
+});

api/libs/mysql.js

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+const mysql = require("mysql");
+
+function getConnection() {
+  return mysql.createConnection({
+    host: process.env.MYSQL_HOST,
+    user: process.env.MYSQL_USER,
+    password: process.env.MYSQL_PASSWORD,
+    database: process.env.MYSQL_DB,
+  });
+}
+
+function getShares(connection) {
+  return new Promise((resolve, reject) => {
+    connection.query(
+      `SELECT * FROM Share`,
+      (error, result) => {
+        if (error) {
+          throw(new Error(error));
+        }
+        resolve(result);
+      }
+    );
+  });
+}
+
+function getShare(connection, id) {
+  return new Promise((resolve, reject) => {
+    connection.query(
+      `SELECT * FROM Share WHERE id = ${id}`,
+      (error, result) => {
+        if (error) {
+          throw(new Error(error));
+        }
+        resolve(result);
+      }
+    );
+  });
+}
+
+function getShareholderShares(connection, owner_id) {
+  return new Promise((resolve, reject) => {
+    connection.query(
+      `SELECT * FROM Share WHERE owner_id = ${owner_id}`,
+      (error, result) => {
+        if (error) {
+          throw(new Error(error));
+        }
+        resolve(result);
+      }
+    );
+  });
+}
+
+function getCompanyShares(connection, id) {
+  return new Promise((resolve, reject) => {
+    connection.query(
+      `SELECT * FROM Share WHERE company_id = ${id}`,
+      (error, result) => {
+        if (error) {
+          throw(new Error(error));
+        }
+        resolve(result);
+      }
+    );
+  });
+}
+
+function setShareOwner(connection, share_id, owner_id) {
+  return new Promise((resolve, reject) => {
+    connection.query(
+      `UPDATE Share SET owner_id = ${owner_id} WHERE id = ${share_id}`,
+      (error, result) => {
+        if (error) {
+          throw(new Error(error));
+        }
+        resolve(result);
+      }
+    );
+  });
+}
+
+function addShare(connection, price, company_id) {
+  return new Promise((resolve, reject) => {
+    connection.query(
+      `INSERT INTO Share (price, owner_id, company_id) VALUES (${price}, -1, ${company_id})`,
+      (error, result) => {
+        if (error) {
+          throw(new Error(error));
+        }
+        resolve(result);
+      }
+    );
+  });
+}
+
+function getShareholders(connection) {
+  return new Promise((resolve, reject) => {
+    connection.query(
+      `SELECT * FROM Shareholder`,
+      (error, result) => {
+        if (error) {
+          throw(new Error(error));
+        }
+        resolve(result);
+      }
+    );
+  });
+}
+
+function getShareholder(connection, id) {
+  return new Promise((resolve, reject) => {
+    connection.query(
+      `SELECT * FROM Shareholder WHERE id = ${id}`,
+      (error, result) => {
+        if (error) {
+          throw(new Error(error));
+        }
+        resolve(result);
+      }
+    );
+  });
+}
+
+function setShareholderCapital(connection, id, capital) {
+  return new Promise((resolve, reject) => {
+    connection.query(
+      `UPDATE Shareholder SET capital = ${capital} WHERE id = ${id}`,
+      (error, result) => {
+        if (error) {
+          throw(new Error(error));
+        }
+        resolve(result);
+      }
+    );
+  });
+}
+
+function getCompanies(connection) {
+  return new Promise((resolve, reject) => {
+    connection.query(
+      `SELECT * FROM Company`,
+      (error, result) => {
+        if (error) {
+          throw(new Error(error));
+        }
+        resolve(result);
+      }
+    );
+  });
+}
+
+function getCompany(connection, id) {
+  return new Promise((resolve, reject) => {
+    connection.query(
+      `SELECT * FROM Company WHERE id = ${id}`,
+      (error, result) => {
+        if (error) {
+          throw(new Error(error));
+        }
+        resolve(result);
+      }
+    );
+  });
+}
+
+function setCompanyCapital(connection, id, capital ) {
+  return new Promise((resolve, reject) => {
+    connection.query(
+      `UPDATE Company SET capital = ${capital} WHERE id = ${id}`,
+      (error, result) => {
+        if (error) {
+          throw(new Error(error));
+        }
+        resolve(result);
+      }
+    );
+  });
+}
+
+function addTransaction(connection, price, seller_id, buyer_id, share_id) {
+  return new Promise((resolve, reject) => {
+    connection.query(
+      `INSERT INTO Transaction (sell_price, seller_id, buyer_id, share_id) VALUES (${price}, ${seller_id}, ${buyer_id}, ${share_id})`,
+      (error, result) => {
+        if (error) {
+          throw(new Error(error));
+        }
+        resolve(result);
+      }
+    );
+  });
+}
+
+module.exports = {
+  getConnection,
+
+  getShares,
+  getShare,
+  getShareholderShares,
+  getCompanyShares,
+  setShareOwner,
+  addShare,
+
+  getShareholders,
+  getShareholder,
+  setShareholderCapital,
+
+  getCompanies,
+  getCompany,
+  setCompanyCapital,
+
+  addTransaction,
+}
+

api/package.json

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+{
+  "name": "api-template",
+  "version": "1.0.0",
+  "description": "",
+  "main": "index.js",
+  "scripts": {
+    "dev": "nodemon index.js",
+    "start": "node index.js"
+  },
+  "keywords": [],
+  "author": "",
+  "license": "ISC",
+  "dependencies": {
+    "axios": "^1.6.5",
+    "cookie-parser": "^1.4.6",
+    "cors": "^2.8.5",
+    "dotenv": "^16.4.7",
+    "express": "^4.18.2",
+    "fs": "^0.0.1-security",
+    "https": "^1.0.0",
+    "jsonwebtoken": "^9.0.2",
+    "mysql": "^2.18.1",
+    "nodemon": "^3.1.7"
+  }
+}