nestjs rewrite

ems/DATABASE.md

@@ -0,0 +1,35 @@
+Make sure to use PostGIS
+
+Create tables first:
+
+```sql
+CREATE TABLE IF NOT EXISTS bounds (
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    entity_id INT NOT NULL,
+    entity_type TEXT NOT NULL,
+    geometry GEOMETRY(MULTIPOLYGON, 3857) NOT NULL,
+    UNIQUE (entity_id, entity_type)
+);
+```
+
+```sql
+CREATE TABLE IF NOT EXISTS lines (
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    object_id UUID NOT NULL,
+    geometry GEOMETRY(LINESTRING, 3857) NOT NULL,
+    created_at TIMESTAMP NOT NULL DEFAULT NOW(),
+    updated_at TIMESTAMP DEFAULT NOW(),
+    schema TEXT NOT NULL
+);
+```
+
+```sql
+CREATE TABLE IF NOT EXISTS shapes (
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    object_id UUID NOT NULL,
+    geometry GEOMETRY(POLYGON, 3857) NOT NULL,
+    created_at TIMESTAMP NOT NULL DEFAULT NOW(),
+    updated_at TIMESTAMP DEFAULT NOW(),
+    schema TEXT NOT NULL
+);
+```