dataflow/api/routes/rules.js

120 lines
3.7 KiB
JavaScript

/**
* Rules Routes
* Manage transformation rules
*/
const express = require('express');
module.exports = (pool) => {
const router = express.Router();
// List all rules for a source
router.get('/source/:source_name', async (req, res, next) => {
try {
const result = await pool.query(
'SELECT * FROM rules WHERE source_name = $1 ORDER BY sequence, name',
[req.params.source_name]
);
res.json(result.rows);
} catch (err) {
next(err);
}
});
// Get single rule
router.get('/:id', async (req, res, next) => {
try {
const result = await pool.query(
'SELECT * FROM rules WHERE id = $1',
[req.params.id]
);
if (result.rows.length === 0) {
return res.status(404).json({ error: 'Rule not found' });
}
res.json(result.rows[0]);
} catch (err) {
next(err);
}
});
// Create rule
router.post('/', async (req, res, next) => {
try {
const { source_name, name, field, pattern, output_field, enabled, sequence } = req.body;
if (!source_name || !name || !field || !pattern || !output_field) {
return res.status(400).json({
error: 'Missing required fields: source_name, name, field, pattern, output_field'
});
}
const result = await pool.query(
`INSERT INTO rules (source_name, name, field, pattern, output_field, enabled, sequence)
VALUES ($1, $2, $3, $4, $5, $6, $7)
RETURNING *`,
[source_name, name, field, pattern, output_field, enabled !== false, sequence || 0]
);
res.status(201).json(result.rows[0]);
} catch (err) {
if (err.code === '23505') { // Unique violation
return res.status(409).json({ error: 'Rule already exists for this source' });
}
if (err.code === '23503') { // Foreign key violation
return res.status(404).json({ error: 'Source not found' });
}
next(err);
}
});
// Update rule
router.put('/:id', async (req, res, next) => {
try {
const { name, field, pattern, output_field, enabled, sequence } = req.body;
const result = await pool.query(
`UPDATE rules
SET name = COALESCE($2, name),
field = COALESCE($3, field),
pattern = COALESCE($4, pattern),
output_field = COALESCE($5, output_field),
enabled = COALESCE($6, enabled),
sequence = COALESCE($7, sequence)
WHERE id = $1
RETURNING *`,
[req.params.id, name, field, pattern, output_field, enabled, sequence]
);
if (result.rows.length === 0) {
return res.status(404).json({ error: 'Rule not found' });
}
res.json(result.rows[0]);
} catch (err) {
next(err);
}
});
// Delete rule
router.delete('/:id', async (req, res, next) => {
try {
const result = await pool.query(
'DELETE FROM rules WHERE id = $1 RETURNING id, name',
[req.params.id]
);
if (result.rows.length === 0) {
return res.status(404).json({ error: 'Rule not found' });
}
res.json({ success: true, deleted: result.rows[0] });
} catch (err) {
next(err);
}
});
return router;
};