feat: update area management to implement hard delete and adjust related references

migrations/001_initial_schema.sql

@@ -82,7 +82,6 @@ CREATE TABLE IF NOT EXISTS areas (
     name VARCHAR(120) NOT NULL,
     description TEXT NULL,
     boundary_geojson JSON NOT NULL,
-    active BOOLEAN NOT NULL DEFAULT TRUE,
     UNIQUE KEY areas_name_unique (name)
 );
 
@@ -102,7 +101,7 @@ CREATE TABLE IF NOT EXISTS teams (
     active BOOLEAN NOT NULL DEFAULT TRUE,
     UNIQUE KEY teams_name_unique (name),
     CONSTRAINT teams_category_fk FOREIGN KEY (team_category_id) REFERENCES team_categories(id),
-    CONSTRAINT teams_area_fk FOREIGN KEY (area_id) REFERENCES areas(id)
+    CONSTRAINT teams_area_fk FOREIGN KEY (area_id) REFERENCES areas(id) ON DELETE SET NULL
 );
 
 CREATE TABLE IF NOT EXISTS reports (
@@ -119,7 +118,7 @@ CREATE TABLE IF NOT EXISTS reports (
     updated_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
     CONSTRAINT reports_user_fk FOREIGN KEY (user_id) REFERENCES users(id),
     CONSTRAINT reports_category_fk FOREIGN KEY (category_id) REFERENCES report_categories(id),
-    CONSTRAINT reports_area_fk FOREIGN KEY (area_id) REFERENCES areas(id),
+    CONSTRAINT reports_area_fk FOREIGN KEY (area_id) REFERENCES areas(id) ON DELETE SET NULL,
     KEY reports_status_idx (status),
     KEY reports_category_idx (category_id),
     KEY reports_area_idx (area_id)

migrations/009_drop_area_active_soft_delete.sql

@@ -0,0 +1,12 @@
+ALTER TABLE teams DROP FOREIGN KEY teams_area_fk;
+ALTER TABLE reports DROP FOREIGN KEY reports_area_fk;
+
+ALTER TABLE areas DROP COLUMN active;
+
+ALTER TABLE teams
+    ADD CONSTRAINT teams_area_fk
+    FOREIGN KEY (area_id) REFERENCES areas(id) ON DELETE SET NULL;
+
+ALTER TABLE reports
+    ADD CONSTRAINT reports_area_fk
+    FOREIGN KEY (area_id) REFERENCES areas(id) ON DELETE SET NULL;