From 96acd360cf745cd914c452a92d356fcffdf94ae6 Mon Sep 17 00:00:00 2001
From: OsCoder <oscoder@lczimmermann.eu>
Date: Fri, 11 Sep 2026 17:22:44 +0200
Subject: Erster Fenster Entwurf mit dropdown der Tabellen Liste

---
 src/main.rs | 78 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 76 insertions(+), 2 deletions(-)

diff --git a/src/main.rs b/src/main.rs
index e7a11a9..80c40ab 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,3 +1,77 @@
-fn main() {
-    println!("Hello, world!");
+use eframe::egui;
+use postgres::{Client, NoTls};
+
+struct MyApp {
+    client: Option<Client>,
+    tables: Vec<String>,
+    selected_table: Option<String>,
+    error: Option<String>,
+}
+
+impl Default for MyApp {
+    fn default() -> Self {
+        let mut app = Self {
+            client: None,
+            tables: Vec::new(),
+            selected_table: None,
+            error: None,
+        };
+        app.connect_and_load_tables();
+        app
+    }
+}
+
+impl MyApp {
+    fn connect_and_load_tables(&mut self) {
+        let result = Client::connect(
+            "host=localhost user=postgres password=test dbname=testdb",
+            NoTls,
+        );
+
+        match result {
+            Ok(mut client) => {
+                let rows = client.query(
+                    "SELECT table_name FROM information_schema.tables WHERE table_schema = 'public'",
+                    &[],
+                );
+                match rows {
+                    Ok(rows) => {
+                        self.tables = rows.iter().map(|r| r.get(0)).collect();
+                    }
+                    Err(e) => self.error = Some(format!("Query-Fehler: {e}")),
+                }
+                self.client = Some(client);
+            }
+            Err(e) => self.error = Some(format!("Verbindungsfehler: {e}")),
+        }
+    }
+}
+
+impl eframe::App for MyApp {
+    fn ui(&mut self, ui: &mut egui::Ui, _frame: &mut eframe::Frame) {
+        egui::CentralPanel::default().show(ui, |ui| {
+            ui.heading("Postgres Tabellen-Browser");
+
+            if let Some(err) = &self.error {
+                ui.colored_label(egui::Color32::RED, err);
+                return;
+            }
+
+            egui::ComboBox::from_label("Tabelle")
+                .selected_text(self.selected_table.clone().unwrap_or_default())
+                .show_ui(ui, |ui| {
+                    for table in &self.tables {
+                        ui.selectable_value(&mut self.selected_table, Some(table.clone()), table);
+                    }
+                });
+        });
+    }
+}
+
+fn main() -> eframe::Result<()> {
+    eframe::run_native(
+        "Postgres Browser",
+        eframe::NativeOptions::default(),
+        Box::new(|_cc| Ok(Box::new(MyApp::default()))),
+    )
 }
-- 
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