feat: implement Trello integration with OAuth and user fields (#48)

* feat: implement Trello integration with OAuth and user fields

* feat: migrate Trello integration to new integrations table

* refactor: migrate Trello integration to use new integration system

* refactor: migrate Trello integration to use new integrations table

* fix: add loading check for Trello integration and update VSCode settings

* feat: enhance import boards UI with dynamic integration providers and local storage config

* feat: add select/unselect all buttons and loading state to board import form

* feat: add Trello import env vars on README

* docs: update Trello import guide to use OAuth flow instead of API keys

* feat: add integrations table for OAuth token management

* feat: connect trello from import modal

* refactor: consolidate Trello integration endpoints into unified integration router

* fix: trello import again

* refactor: generalize integration authorization flow and improve error handling

* refactor: update Trello API endpoints and tags for better organization

* feat: add Integrations tag to OpenAPI specification

* refactor: update Trello auth endpoint to use generic integration provider param

* refactor: move Trello integration logic from trello.ts to import.ts router

* refactor: consolidate Trello integration endpoints and fix API URL

* chore: remove debug logs

---------

Co-authored-by: Henry <henry_ball@hotmail.co.uk>

packages/db/src/repository/integration.repo.ts

@@ -0,0 +1,59 @@
+import { and, eq, gte } from "drizzle-orm";
+
+import type { dbClient } from "@kan/db/client";
+import { integrations } from "@kan/db/schema";
+
+export const isProviderAvailableForUser = async (
+  db: dbClient,
+  userId: string,
+  provider: string,
+) => {
+  const integration = await db.query.integrations.findFirst({
+    where: and(
+      eq(integrations.userId, userId),
+      eq(integrations.provider, provider),
+      gte(integrations.expiresAt, new Date()),
+    ),
+  });
+
+  return !!integration;
+};
+
+export const getProviderForUser = async (
+  db: dbClient,
+  userId: string,
+  provider: string,
+) => {
+  const integration = await db.query.integrations.findFirst({
+    where: and(
+      eq(integrations.userId, userId),
+      eq(integrations.provider, provider),
+      gte(integrations.expiresAt, new Date()),
+    ),
+  });
+
+  return integration;
+};
+
+export const getProvidersForUser = async (db: dbClient, userId: string) => {
+  const integration = await db.query.integrations.findMany({
+    where: and(
+      eq(integrations.userId, userId),
+      gte(integrations.expiresAt, new Date()),
+    ),
+  });
+
+  return integration;
+};
+
+export const deleteProviderForUser = async (
+  db: dbClient,
+  userId: string,
+  provider: string,
+) => {
+  await db
+    .delete(integrations)
+    .where(
+      and(eq(integrations.userId, userId), eq(integrations.provider, provider)),
+    );
+};