Initial commit - Resource Monitor with Ubuntu installer

server/database.js

@@ -0,0 +1,44 @@
+const Database = require('better-sqlite3');
+const path = require('path');
+
+const db = new Database(path.join(__dirname, '../data/monitor.db'));
+
+// Create tables
+db.exec(`
+  CREATE TABLE IF NOT EXISTS resources (
+    id INTEGER PRIMARY KEY AUTOINCREMENT,
+    name TEXT NOT NULL,
+    url TEXT NOT NULL,
+    type TEXT NOT NULL DEFAULT 'http',
+    check_interval INTEGER DEFAULT 60000,
+    timeout INTEGER DEFAULT 5000,
+    enabled INTEGER DEFAULT 1,
+    created_at DATETIME DEFAULT CURRENT_TIMESTAMP
+  );
+
+  CREATE TABLE IF NOT EXISTS checks (
+    id INTEGER PRIMARY KEY AUTOINCREMENT,
+    resource_id INTEGER NOT NULL,
+    status TEXT NOT NULL,
+    response_time INTEGER,
+    status_code INTEGER,
+    error_message TEXT,
+    checked_at DATETIME DEFAULT CURRENT_TIMESTAMP,
+    FOREIGN KEY (resource_id) REFERENCES resources(id) ON DELETE CASCADE
+  );
+
+  CREATE TABLE IF NOT EXISTS incidents (
+    id INTEGER PRIMARY KEY AUTOINCREMENT,
+    resource_id INTEGER NOT NULL,
+    started_at DATETIME DEFAULT CURRENT_TIMESTAMP,
+    resolved_at DATETIME,
+    notified INTEGER DEFAULT 0,
+    FOREIGN KEY (resource_id) REFERENCES resources(id) ON DELETE CASCADE
+  );
+
+  CREATE INDEX IF NOT EXISTS idx_checks_resource_id ON checks(resource_id);
+  CREATE INDEX IF NOT EXISTS idx_checks_checked_at ON checks(checked_at);
+  CREATE INDEX IF NOT EXISTS idx_incidents_resource_id ON incidents(resource_id);
+`);
+
+module.exports = db;