Blocks GQL API (#213)

* Add schema for blocks query.

* Implement resolver for blocks query.

* Fix issue with multiple query filters for one entity field.

Co-authored-by: nabarun <nabarun@deepstacksoft.com>

packages/uni-info-watcher/src/database.ts

@@ -62,11 +62,11 @@ export interface QueryOptions {
 }
 
 interface Where {
-  [key: string]: {
+  [key: string]: [{
     value: any;
     not: boolean;
     operator: keyof typeof OPERATOR_MAP;
-  }
+  }]
 }
 
 export class Database {
@@ -479,7 +479,8 @@ export class Database {
       selectQueryBuilder = selectQueryBuilder.leftJoinAndSelect(`${repo.metadata.tableName}.${relation}`, relation);
     });
 
-    Object.entries(where).forEach(([field, filter]) => {
+    Object.entries(where).forEach(([field, filters]) => {
+      filters.forEach((filter, index) => {
         // Form the where clause.
         const { not, operator, value } = filter;
         const columnMetadata = repo.metadata.findColumnWithPropertyName(field);
@@ -504,7 +505,8 @@ export class Database {
           whereClause += ':';
         }
 
-      whereClause += 'value';
+        const variableName = `${field}${index}`;
+        whereClause += variableName;
 
         if (['contains', 'ends'].some(el => el === operator)) {
           whereClause += '%';
@@ -512,7 +514,8 @@ export class Database {
           whereClause += ')';
         }
 
-      selectQueryBuilder = selectQueryBuilder.andWhere(whereClause, { value });
+        selectQueryBuilder = selectQueryBuilder.andWhere(whereClause, { [variableName]: value });
+      });
     });
 
     const { limit = DEFAULT_LIMIT, orderBy, orderDirection, skip = DEFAULT_SKIP } = queryOptions;

packages/uni-info-watcher/src/indexer.ts

@@ -206,6 +206,30 @@ export class Indexer {
     return block;
   }
 
+  async getBlocks (where: { [key: string]: any } = {}, queryOptions: QueryOptions): Promise<any> {
+    if (where.timestamp_gt) {
+      where.blockTimestamp_gt = where.timestamp_gt;
+      delete where.timestamp_gt;
+    }
+
+    if (where.timestamp_lt) {
+      where.blockTimestamp_lt = where.timestamp_lt;
+      delete where.timestamp_lt;
+    }
+
+    if (queryOptions.orderBy === 'timestamp') {
+      queryOptions.orderBy = 'blockTimestamp';
+    }
+
+    const blocks = await this.getEntities(BlockProgress, {}, where, queryOptions);
+
+    return blocks.map(block => ({
+      timestamp: block.blockTimestamp,
+      number: block.blockNumber,
+      hash: block.blockHash
+    }));
+  }
+
   async getEvent (id: string): Promise<Event | undefined> {
     return this._db.getEvent(id);
   }
@@ -290,7 +314,11 @@ export class Indexer {
       where = Object.entries(where).reduce((acc: { [key: string]: any }, [fieldWithSuffix, value]) => {
         const [field, ...suffix] = fieldWithSuffix.split('_');
 
-        acc[field] = {
+        if (!acc[field]) {
+          acc[field] = [];
+        }
+
+        const filter = {
           value,
           not: false,
           operator: 'equals'
@@ -299,14 +327,16 @@ export class Indexer {
         let operator = suffix.shift();
 
         if (operator === 'not') {
-          acc[field].not = true;
+          filter.not = true;
           operator = suffix.shift();
         }
 
         if (operator) {
-          acc[field].operator = operator;
+          filter.operator = operator;
         }
 
+        acc[field].push(filter);
+
         return acc;
       }, {});
 

packages/uni-info-watcher/src/resolvers.ts

@@ -133,6 +133,12 @@ export const createResolvers = async (indexer: Indexer): Promise<any> => {
         log('positions', first, where);
 
         return indexer.getEntities(Position, {}, where, { limit: first }, ['pool', 'token0', 'token1', 'tickLower', 'tickUpper', 'transaction']);
+      },
+
+      blocks: async (_: any, { first, orderBy, orderDirection, where }: { first: number, orderBy: string, orderDirection: OrderDirection, where: { [key: string]: any } }) => {
+        log('blocks', first, orderBy, orderDirection, where);
+
+        return indexer.getBlocks(where, { limit: first, orderBy, orderDirection });
       }
     }
   };

packages/uni-info-watcher/src/schema.ts

@@ -160,6 +160,12 @@ type Position {
   feeGrowthInside1LastX128: BigInt!
 }
 
+type Block {
+  number: Int!
+  hash: Bytes!
+  timestamp: Int!
+}
+
 enum OrderDirection {
   asc
   desc
@@ -268,6 +274,15 @@ input Position_filter {
   id: ID
 }
 
+input Block_filter {
+  timestamp_gt: Int
+  timestamp_lt: Int
+}
+
+enum Block_orderBy {
+  timestamp
+}
+
 type Query {
   bundle(
     id: ID!
@@ -413,5 +428,12 @@ type Query {
     first: Int = 100
     where: Position_filter
   ): [Position!]!
+
+  blocks(
+    first: Int = 100
+    orderBy: Block_orderBy
+    orderDirection: OrderDirection
+    where: Block_filter
+  ): [Block!]!
 }
 `;