Enable {chain}/final route query (#34)

Similar to `{chain}/current` except it only takes into account the
blocks marked final in the chain. Returns the highest block number present.

src/index.ts

@@ -156,11 +156,11 @@ export function generateApp() {
         return JSONAPIResponseWrapper<SingleBlocknumQueryResponseSchema>(c, await currentBlocknumQuery(chain));
     });
 
-    /*app.openapi(routes.finalBlocknumQueryRoute, async (c) => {
+    app.openapi(routes.finalBlocknumQueryRoute, async (c) => {
         const { chain } = c.req.valid('param') as BlockchainSchema;
 
         return JSONAPIResponseWrapper<SingleBlocknumQueryResponseSchema>(c, await finalBlocknumQuery(chain));
-    });*/
+    });
 
     return app;
 }

src/queries.ts

@@ -79,14 +79,13 @@ export async function currentBlocknumQuery(chain: string) {
 }
 
 export async function finalBlocknumQuery(chain: string) {
-    /*const query = `SELECT MAX(block_number) as final FROM ${config.table} GROUP BY chain HAVING (chain == '${chain}')`;
+    const query = `SELECT MAX(block_number) as final FROM ${config.table} GROUP BY chain HAVING (chain == '${chain}') AND (final_block == true)`;
     const json = await makeQuery(query);
 
     return SingleBlocknumQueryResponseSchema.parse({
-        chain
+        chain,
         block_number: Object.values(json as JSONObjectEachRow)[0].final,
     });
-    */
 }
 
 export async function supportedChainsQuery() {

src/tests/index.spec.ts

@@ -153,7 +153,7 @@ describe('Blocknum query page (/{chain}/blocknum?timestamp=<timestamp>)', () =>
     });
 });
 
-describe.each(['current'/*, 'final'*/])('Single blocknum query page (/{chain}/%s)', (query_type: string) => {
+describe.each(['current', 'final'])('Single blocknum query page (/{chain}/%s)', (query_type: string) => {
     it('Should fail on non-valid chains', async () => {
         const res = await app.request(`/dummy/${query_type}`);
         expect(res.status).toBe(422);