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server.js
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server.js
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const express = require('express');
const bodyParser = require('body-parser');
const path = require('path');
const Promise = require('bluebird');
require("date-format-lite");
const port = 1337;
const app = express();
const mysql = require('promise-mysql');
app.use(express.static(path.join(__dirname, "public")));
app.use(bodyParser.urlencoded({ extended: true }));
app.listen(port, () => {
console.log("Server is running on port " + port + "...");
});
async function serverСonfig() {
const db = await mysql.createPool({
host: 'localhost',
user: 'root',
password: '',
database: 'gantt-howto-node'
});
app.get("/data", (req, res) => {
Promise.all([
db.query("SELECT * FROM gantt_tasks ORDER BY sortorder ASC"),
db.query("SELECT * FROM gantt_links")
]).then(results => {
let tasks = results[0],
links = results[1];
for (let i = 0; i < tasks.length; i++) {
tasks[i].start_date = tasks[i].start_date.format("YYYY-MM-DD hh:mm:ss");
tasks[i].open = true;
}
res.send({
data: tasks,
collections: { links: links }
});
}).catch(error => {
sendResponse(res, "error", null, error);
});
});
// add new task
app.post("/data/task", (req, res) => { // adds new task to database
let task = getTask(req.body);
db.query("SELECT MAX(sortorder) AS maxOrder FROM gantt_tasks")
.then(result => { /*!*/ // assign max sort order to new task
let orderIndex = (result[0].maxOrder || 0) + 1;
return db.query("INSERT INTO gantt_tasks(text, start_date, duration, progress, parent, sortorder) VALUES (?,?,?,?,?,?)",
[task.text, task.start_date, task.duration, task.progress, task.parent, orderIndex]);
})
.then(result => {
sendResponse(res, "inserted", result.insertId);
})
.catch(error => {
sendResponse(res, "error", null, error);
});
});
// update task
app.put("/data/task/:id", (req, res) => {
let sid = req.params.id,
target = req.body.target,
task = getTask(req.body);
Promise.all([
db.query("UPDATE gantt_tasks SET text = ?, start_date = ?, duration = ?, progress = ?, parent = ? WHERE id = ?",
[task.text, task.start_date, task.duration, task.progress, task.parent, sid]),
updateOrder(sid, target)
])
.then(result => {
sendResponse(res, "updated");
})
.catch(error => {
sendResponse(res, "error", null, error);
});
});
function updateOrder(taskId, target) {
let nextTask = false;
let targetOrder;
target = target || "";
if (target.startsWith("next:")) {
target = target.substr("next:".length);
nextTask = true;
}
return db.query("SELECT * FROM gantt_tasks WHERE id = ?",
[target])
.then(result => {
if (!result[0])
return Promise.resolve();
targetOrder = result[0].sortorder;
if (nextTask)
targetOrder++;
return db.query("UPDATE gantt_tasks SET sortorder = sortorder + 1 WHERE sortorder >= ?",
[targetOrder])
.then(result => {
return db.query("UPDATE gantt_tasks SET sortorder = ? WHERE id = ?",
[targetOrder, taskId]);
});
});
}
// delete task
app.delete("/data/task/:id", (req, res) => {
let sid = req.params.id;
db.query("DELETE FROM gantt_tasks WHERE id = ?", [sid])
.then(result => {
sendResponse(res, "deleted");
})
.catch(error => {
sendResponse(res, "error", null, error);
});
});
// add link
app.post("/data/link", (req, res) => {
let link = getLink(req.body);
db.query("INSERT INTO gantt_links(source, target, type) VALUES (?,?,?)",
[link.source, link.target, link.type])
.then(result => {
sendResponse(res, "inserted", result.insertId);
})
.catch(error => {
sendResponse(res, "error", null, error);
});
});
// update link
app.put("/data/link/:id", (req, res) => {
let sid = req.params.id,
link = getLink(req.body);
db.query("UPDATE gantt_links SET source = ?, target = ?, type = ? WHERE id = ?",
[link.source, link.target, link.type, sid])
.then(result => {
sendResponse(res, "updated");
})
.catch(error => {
sendResponse(res, "error", null, error);
});
});
// delete link
app.delete("/data/link/:id", (req, res) => {
let sid = req.params.id;
db.query("DELETE FROM gantt_links WHERE id = ?",
[sid])
.then(result => {
sendResponse(res, "deleted");
})
.catch(error => {
sendResponse(res, "error", null, error);
});
});
function getTask(data) {
return {
text: data.text,
start_date: data.start_date.date("YYYY-MM-DD"),
duration: data.duration,
progress: data.progress || 0,
parent: data.parent
};
}
function getLink(data) {
return {
source: data.source,
target: data.target,
type: data.type
};
}
function sendResponse(res, action, tid, error) {
if (action == "error")
console.log(error);
let result = {
action: action
};
if (tid !== undefined && tid !== null)
result.tid = tid;
res.send(result);
}
};
serverСonfig();