Added API endpoints to server
This commit is contained in:
MattLeo
parent
2dd3cb8982
commit
ecbb6f8f30
137
server/db.js
137
server/db.js
@ -1,9 +1,38 @@
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const initSqlJs = require('sql.js');
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const fs = require('fs');
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const { resourceUsage } = require('process');
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let db = null;
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const DB_PATH = './ka.db';
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// Helper functions
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function getNextKANumber() {
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const result = db.exec('SELECT ka_number FROM articles ORDER BY id DESC LIMIT 1')
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if (result.length > 0 && result[0].values.length > 0) {
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const lastKANumber = result[0].values[0][0];
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const number = parseInt(lastKANumber.replace('KA', '')) + 1;
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return `KA${String(number).padStart(3, '0')}`;
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}
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return 'KA001';
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}
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function getArtcileById(id) {
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const stmt = db.prepare("SELECT * FROM articles WHERE id = ?");
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stmt.bind([id]);
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if (stmt.step()) {
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const article = stmt.getAsObject();
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stmt.free();
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return article;
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}
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stmt.free();
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return null;
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}
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async function initDb() {
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const SQL = await initSqlJs();
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@ -27,10 +56,13 @@ async function initDb() {
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ka_number TEXT UNIQUE,
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title TEXT,
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content TEXT,
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created_at DATETIME DEFAULT CURRENT_TIMESTAMP
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created_at DATETIME DEFAULT CURRENT_TIMESTAMP,
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updated_at DATETIME
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)
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`);
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db.run("CREATE INDEX idx_ka_number ON articles(ka_number)");
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// Saving the created db to file
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const data = db.export();
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fs.writeFileSync(DB_PATH, Buffer.from(data));
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@ -40,4 +72,105 @@ async function initDb() {
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return db;
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}
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module.exports = {initDb};
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// Get all articles from the DB
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function getAllArticles() {
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const result = db.exec("SELECT * FROM articles ORDER BY created_at DESC");
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if (result.length === 0) {
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return [];
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}
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const columns = result[0].columns;
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const rows = result[0].values;
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const articles = rows.map(row => {
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const article = {};
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columns.forEach((col, index) => {
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article[col] = row[index];
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});
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return article;
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})
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return articles;
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}
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// Get a specific article from the DB
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function getArticle(ka_num) {
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const stmt = db.prepare('SELECT * FROM articles where ka_number = ?');
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stmt.bind([ka_num]);
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if (stmt.step()) {
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const article = stmt.getAsObject();
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stmt.free();
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return article;
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}
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stmt.free();
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return null;
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}
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// Create a new article
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function createArticle(title, content) {
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const ka_num = getNextKANumber();
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db.run(
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"INSERT INTO artciles (ka_number, title, content) VALUES (?, ?, ?)",
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[ka_num, title, content]
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);
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// Saving updated DB to file
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const data = db.export();
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fs.writeFileSync(DB_PATH, Buffer.from(data));
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// Getting id and returning the newly created artcle
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const result = db.exec("SELECT last_insert_rowId()");
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const id = result[0].values[0][0];
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return getArtcileById(id);
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}
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function updateArticle(ka_num, title, content) {
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db.run(
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"UPDATE articles SET title = ?, content = ?, updated_at = CURRENT_TIMESTAMP WHERE ka_number = ?",
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[title, content, ka_num]
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);
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// Saving updated DB to file
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const data = db.export();
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fs.writeFileSync(DB_PATH, Buffer.from(data));
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return getArticle(ka_num);
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}
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// Delete the article from the DB
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function deleteArticle(ka_num) {
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db.run(
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"DELETE FROM articles WHERE ka_number = ?",
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[ka_num]
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);
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// Saving updated DB to file
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const data = db.export();
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fs.writeFileSync(DB_PATH, Buffer.from(data));
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}
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// Simple search to look for matching terms or KA number
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function searchArticles(query) {
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const searchTerm = `%${query}%`;
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const stmt = db.prepare(
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"SELECT * FROM articles WHERE title LIKE ? OR content LIKE ? or ka_number LIKE ? ORDER BY created_at DESC"
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);
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stmt.bind([searchTerm, searchTerm, searchTerm]);
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stmt.free();
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const results = [];
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while (stmt.step()) {
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results.push(stmt.getAsObject());
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}
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stmt.free();
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return results;
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}
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module.exports = { initDb, getAllArticles, getArticle, createArticle, updateArticle, deleteArticle, searchArticles };
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@ -1,5 +1,5 @@
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const express = require('express');
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const { initDb } = require('./db');
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const { initDb, getAllArticles, getArticle, createArticle, updateArticle, deleteArticle, searchArticles } = require('./db');
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const app = express();
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const PORT = 9000;
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@ -11,6 +11,96 @@ initDb().then(() => {
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res.json({message : 'Server is running'});
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});
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app.get('/api/articles', (req, res) => {
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try {
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const articles = getAllArticles();
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res.json(articles);
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} catch (error) {
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console.error('Error fetching articles:', error);
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res.status(500).json({error: 'Failed to fetch articles', 'details': String(error)});
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}
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});
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app.get('/api/articles/:ka_number', (req, res) => {
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try {
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const article = getArticle(req.params.ka_number);
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if (!article) {
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return res.status(404).json({ error: 'Article not found' });
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}
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res.json(article);
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} catch (error) {
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console.error('Error fetching article:', error);
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res.status(500).json({error: 'Failed to fetch article', 'details': String(error)});
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}
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});
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app.post('/api/articles', (req, res) => {
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try {
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const { title, content } = req.body;
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if (!title) {
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return res.status(400).json({error: 'Title is required' });
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}
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const article = createArticle(title, content || '');
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res.status(201).json(article);
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} catch (error) {
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console.error('Error creating article:', error);
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res.status(500).json({error: 'Failed to create article', 'details': String(error)});
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}
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});
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app.put('/api/articles/:ka_number', (req, res) => {
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try {
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const { title, content } = req.body;
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if (!title) {
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return res.status(400).json({error: 'Title is required' });
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}
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const article = updateArticle(req.params.ka_number, title, content);
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if (!article) {
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return res.status(404).json({error: 'Article not found'});
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}
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res.json(article);
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} catch (error) {
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console.error('Error updating article:', error);
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return res.status(500).json({error: 'Error while updating article', 'details': String(error)});
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}
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});
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app.delete('/api/articles/:ka_number', (req, res) => {
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try {
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deleteArticle(req.params.ka_number);
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return res.status(200).json({'message': 'Successfully deleted article'});
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} catch (error) {
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console.error('Error when deleting article:', error);
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return res.status(500).json({error: 'Failed to delete article', 'details': String(error)});
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}
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});
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app.get('/api/search', (req, res) => {
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try {
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const query = req.query.q;
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if (!query) {
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return res.status(400).json({error: 'Search query is required'});
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}
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const results = searchArticles(query);
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res.json(results);
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} catch (error) {
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console.error('Error when searching articles:', error);
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return res.status(500).json({error: 'Failed to search articles', 'details': String(error)});
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}
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});
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app.listen(PORT, () => {
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console.log(`Server running on http://localhost:${PORT}`);
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});
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