first commit

2025-11-25 16:58:24 +01:00
commit f5f5f10338
17 changed files with 5389 additions and 0 deletions
--- a/backend/src/db.rs
+++ b/backend/src/db.rs
@@ -0,0 +1,83 @@
+use scylla::{Session, SessionBuilder};
+use std::sync::Arc;
+
+pub async fn initialize_schema(session: &Session) -> Result<(), Box<dyn std::error::Error>> {
+    // Create keyspace
+    session
+        .query(
+            "CREATE KEYSPACE IF NOT EXISTS map_data WITH REPLICATION = { 'class' : 'SimpleStrategy', 'replication_factor' : 1 }",
+            &[],
+        )
+        .await?;
+
+    // Create table for OSM nodes (points)
+    // Partition by tile coordinates (zoom, x, y) for efficient retrieval
+    // This is a simplified schema. Real OSM data is more complex.
+    session
+        .query(
+            "CREATE TABLE IF NOT EXISTS map_data.nodes (
+                zoom int,
+                tile_x int,
+                tile_y int,
+                id bigint,
+                lat double,
+                lon double,
+                tags map<text, text>,
+                PRIMARY KEY ((zoom, tile_x, tile_y), id)
+            )",
+            &[],
+        )
+        .await?;
+
+    session
+        .query(
+            "CREATE TABLE IF NOT EXISTS map_data.ways (
+                zoom int,
+                tile_x int,
+                tile_y int,
+                id bigint,
+                tags map<text, text>,
+                points blob,
+                PRIMARY KEY ((zoom, tile_x, tile_y), id)
+            )",
+            &[],
+        )
+        .await?;
+
+    session
+        .query(
+            "CREATE TABLE IF NOT EXISTS map_data.buildings (
+                zoom int,
+                tile_x int,
+                tile_y int,
+                id bigint,
+                tags map<text, text>,
+                points blob,
+                PRIMARY KEY ((zoom, tile_x, tile_y), id)
+            )",
+            &[],
+        )
+        .await?;
+
+    println!("Schema initialized.");
+    Ok(())
+}
+
+pub async fn seed_data(session: &Session) -> Result<(), Box<dyn std::error::Error>> {
+    // Insert some dummy data for Munich (approx lat/lon)
+    // Munich is roughly at lat 48.1351, lon 11.5820
+    // At zoom 10, this falls into a specific tile.
+    // For simplicity, we'll just use a fixed tile coordinate for testing: 10/500/500 (not accurate, just for ID)
+    
+    let insert_stmt = "INSERT INTO map_data.nodes (zoom, tile_x, tile_y, id, lat, lon, tags) VALUES (?, ?, ?, ?, ?, ?, ?)";
+    let prepared = session.prepare(insert_stmt).await?;
+
+    // Point 1: Marienplatz
+    session.execute(&prepared, (10, 500, 500, 1_i64, 48.137, 11.575, std::collections::HashMap::from([("name".to_string(), "Marienplatz".to_string())]))).await?;
+    
+    // Point 2: English Garden
+    session.execute(&prepared, (10, 500, 500, 2_i64, 48.150, 11.590, std::collections::HashMap::from([("name".to_string(), "English Garden".to_string())]))).await?;
+
+    println!("Test data seeded.");
+    Ok(())
+}