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"use strict";
const { remote, ipcRenderer } = require("electron");
const { Pool } = require("pg");
const connectionTestQuery = "SELECT now()";
const executorId = remote.getCurrentWindow().executorId;
const connectionConfig = remote.getCurrentWindow().connectionConfig;
const connectionPool = new Pool({
user: connectionConfig.username,
host: connectionConfig.hostname,
database: connectionConfig.database,
password: connectionConfig.password,
port: connectionConfig.port
});
// Test the newly initialised connection
connectionPool.query(connectionTestQuery, (err, res) => {
setErrorCauseIfExists(err);
ipcRenderer.send("queryExecutor.initialiseConnectionCallback", {error: err, executorId: executorId});
});
function setErrorCauseIfExists(error) {
if (error !== undefined) {
// The IPC payload is serialised to JSON before transmission, so the prototype chain is lost.
// So store the nicely formatted error message as a property.
error.cause = error.toString();
}
}
ipcRenderer.on("queryExecutor.runQuery", (event, payload) => {
if(payload.queryExecutorId === executorId) {
connectionPool.query(payload.query, (err, res) => {
console.log(err, res);
setErrorCauseIfExists(err);
ipcRenderer.send("queryExecutor.runQueryComplete", {
"error": err,
"result": res,
"editorInstanceId": payload.editorInstanceId
});
});
}
});
ipcRenderer.on("queryExecutor.queryTableMetadata", (event, payload) => {
let tableMetadata = {};
let tableDataQuery =
"SELECT c.table_name identifier, c.column_name " +
"FROM information_schema.columns c " +
"WHERE c.table_schema = current_schema()";
connectionPool.query(tableDataQuery, (err, res) => {
console.log(err, res)
res.rows.forEach((row) => {
if(tableMetadata.hasOwnProperty(row.identifier)) {
tableMetadata[row.identifier].push(row.column_name);
}
else {
tableMetadata[row.identifier] = [row.column_name];
}
})
ipcRenderer.send("queryExecutor.queryTableMetadataComplete", {
"error": err,
"result": tableMetadata,
"editorInstanceId": payload.editorInstanceId
});
});
});
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