feat: add max order to environments (#3988)

Co-authored-by: Tymoteusz Czech <2625371+Tymek@users.noreply.github.com>

src/lib/db/environment-store.ts

@@ -137,6 +137,13 @@ export default class EnvironmentStore implements IEnvironmentStore {
             .then((res) => Number(res[0].count));
     }
 
+    getMaxSortOrder(): Promise<number> {
+        return this.db
+            .from(TABLE)
+            .max('sort_order')
+            .then((res) => Number(res[0].max));
+    }
+
     async get(key: string): Promise<IEnvironment> {
         const row = await this.db<IEnvironmentsTable>(TABLE)
             .where({ name: key })

src/lib/types/stores/environment-store.ts

@@ -24,6 +24,7 @@ export interface IEnvironmentStore extends Store<IEnvironment, string> {
     enable(environments: IEnvironment[]): Promise<void>;
     count(): Promise<number>;
     getAllWithCounts(): Promise<IEnvironment[]>;
+    getMaxSortOrder(): Promise<number>;
     getProjectEnvironments(
         projectId: string,
         query?: Object,

src/test/fixtures/fake-environment-store.ts

@@ -135,6 +135,10 @@ export default class FakeEnvironmentStore implements IEnvironmentStore {
     ): Promise<IProjectEnvironment[]> {
         return Promise.reject(new Error('Not implemented'));
     }
+
+    getMaxSortOrder(): Promise<number> {
+        return Promise.resolve(0);
+    }
 }
 
 module.exports = FakeEnvironmentStore;