Implement getTableInfo command.

Reviewed By: lblasa

Differential Revision: D48266744

fbshipit-source-id: 79f2fd3c4718d6bf7be4a0538ec0d1eb92503eb7

iOS/Plugins/FlipperKitDatabasesPlugin/FlipperKitDatabasesPlugin/Commands/DatabaseGetTableInfo.h

@@ -21,5 +21,7 @@
 @property(nonatomic, copy, readonly) NSString* table;
 
 - (instancetype)initWithDatabaseId:(NSInteger)databaseId table:(NSString*)table;
++ (DatabaseGetTableInfoRequest*)getTableInfoRequestFromDictionary:
+    (NSDictionary*)dictionary;
 
 @end

iOS/Plugins/FlipperKitDatabasesPlugin/FlipperKitDatabasesPlugin/Commands/DatabaseGetTableInfo.m

@@ -31,4 +31,16 @@
   return self;
 }
 
++ (DatabaseGetTableInfoRequest*)getTableInfoRequestFromDictionary:
+    (NSDictionary*)dictionary {
+  NSNumber* databaseId = @([dictionary[@"databaseId"] integerValue]);
+  NSString* table = dictionary[@"table"];
+  if (databaseId == nil || table == nil) {
+    return nil;
+  }
+  return [[DatabaseGetTableInfoRequest alloc]
+      initWithDatabaseId:databaseId.intValue
+                   table:table];
+}
+
 @end

iOS/Plugins/FlipperKitDatabasesPlugin/FlipperKitDatabasesPlugin/DatabaseDriver.h

@@ -8,7 +8,7 @@
 #import <Foundation/Foundation.h>
 
 @protocol DatabaseDescriptor;
-@class DatabaseGetTableStructureRequest;
+@class DatabaseGetTableInfoResponse;
 @class DatabaseGetTableStructureResponse;
 
 @protocol DatabaseDriver<NSObject>
@@ -18,4 +18,8 @@
     getTableStructureWithDatabaseDescriptor:
         (id<DatabaseDescriptor>)databaseDescriptor
                                    forTable:(NSString*)tableName;
+- (DatabaseGetTableInfoResponse*)
+    getTableInfoWithDatabaseDescriptor:
+        (id<DatabaseDescriptor>)databaseDescriptor
+                              forTable:(NSString*)tableName;
 @end

iOS/Plugins/FlipperKitDatabasesPlugin/FlipperKitDatabasesPlugin/DatabasesManager.m

@@ -14,6 +14,7 @@
 #import "DatabaseDescriptorHolder.h"
 #import "DatabaseDriver.h"
 #import "DatabaseErrorCodes.h"
+#import "DatabaseGetTableInfo.h"
 #import "DatabaseGetTableStructure.h"
 #import "ObjectMapper.h"
 
@@ -132,8 +133,43 @@
       }];
 
   [self.connection
-        receive:@"getTableStructure"
-      withBlock:^(NSDictionary* params, id<FlipperResponder> responder){
+        receive:@"getTableInfo"
+      withBlock:^(NSDictionary* params, id<FlipperResponder> responder) {
+        DatabaseGetTableInfoRequest* request = [DatabaseGetTableInfoRequest
+            getTableInfoRequestFromDictionary:params];
+        if (!request) {
+          NSDictionary* errorResponse = [ObjectMapper
+              errorWithCode:DatabasesErrorCodesInvalidRequest
+                    message:kDatabasesErrorCodesInvalidRequestMessage];
+          [responder error:errorResponse];
+          return;
+        }
+        DatabaseDescriptorHolder* descriptorHolder =
+            self.databaseDescriptorHolders[@(request.databaseId)];
+        if (!descriptorHolder) {
+          NSDictionary* errorResponse = [ObjectMapper
+              errorWithCode:DatabasesErrorCodesDatabaseInvalid
+                    message:kDatabasesErrorCodesDatabaseInvalidMessage];
+          [responder error:errorResponse];
+          return;
+        }
+
+        @try {
+          DatabaseGetTableInfoResponse* tableInfo =
+              [descriptorHolder.databaseDriver
+                  getTableInfoWithDatabaseDescriptor:descriptorHolder
+                                                         .databaseDescriptor
+                                            forTable:request.table];
+          NSDictionary* response =
+              [ObjectMapper databaseGetTableInfoResponseToDictionary:tableInfo];
+          [responder success:response];
+        } @catch (NSException* exception) {
+          NSDictionary* errorResponse = [ObjectMapper
+              errorWithCode:DatabasesErrorCodesSqlExecutionException
+                    message:[kDatabasesErrorCodesSqlExecutionExceptionMessage
+                                stringByAppendingString:exception.reason]];
+          [responder error:errorResponse];
+        }
       }];
 
   [self.connection

iOS/Plugins/FlipperKitDatabasesPlugin/FlipperKitDatabasesPlugin/Mock/MockDatabaseDriver.m

@@ -6,6 +6,7 @@
  */
 
 #import "MockDatabaseDriver.h"
+#import "DatabaseGetTableInfo.h"
 #import "DatabaseGetTableStructure.h"
 #import "MockDatabaseDescriptor.h"
 
@@ -46,4 +47,12 @@
                  indexesValues:[indexesValues copy]];
 }
 
+- (DatabaseGetTableInfoResponse*)
+    getTableInfoWithDatabaseDescriptor:
+        (id<DatabaseDescriptor>)databaseDescriptor
+                              forTable:(NSString*)tableName {
+  return [[DatabaseGetTableInfoResponse alloc]
+      initWithDefinition:@"This is mocked table definition"];
+}
+
 @end

iOS/Plugins/FlipperKitDatabasesPlugin/FlipperKitDatabasesPlugin/ObjectMapper.m

@@ -58,7 +58,9 @@
 
 + (NSDictionary*)databaseGetTableInfoResponseToDictionary:
     (DatabaseGetTableInfoResponse*)response {
-  return @{};
+  return @{
+    @"definition" : response.definition,
+  };
 }
 
 + (NSDictionary*)databaseExecuteSqlResponseToDictionary: