Feat: Add the ability to create a comment to the post

.gitignore

@@ -1 +1,2 @@
 build
+.vscode

README.md

@@ -86,3 +86,8 @@ The entire task should only take 2-3 hours, but you’re free to take it as far
 With this take home task we would like to understand how you tackle tasks like the above. In order for us to easier understand what your reasoning for certain decisions is, please make sure to write good code comments and documentation and maintain a proper Git history with commit messages explaining each step.
 
 Feel free to include a list of ideas on how to improve your final project under the assumption that you have unlimited time and resources to spend on it.
+
+### CosmosSDK 0.45 Documentation 
+  In official cosmos website does not have documentation for 0.44 
+  Steps described for 0.45 will work for 0.44 also: 
+  https://docs.cosmos.network/v0.45/run-node/keyring.html

proto/blog/v1/query.proto

@@ -9,6 +9,7 @@ import "blog/v1/types.proto";
 // Query defines the gRPC querier service.
 service Query {
   rpc AllPosts(QueryAllPostsRequest) returns (QueryAllPostsResponse);
+  rpc AllPostComments(QueryAllPostCommentsRequest) returns (QueryAllPostCommentsResponse);
 }
 
 message QueryAllPostsRequest {
@@ -20,3 +21,16 @@ message QueryAllPostsResponse {
 
   cosmos.base.query.v1beta1.PageResponse pagination = 2;
 }
+
+
+message QueryAllPostCommentsRequest {
+  string postSlug = 1;  
+
+  cosmos.base.query.v1beta1.PageRequest pagination = 2;
+}
+
+message QueryAllPostCommentsResponse  {
+  repeated PostComment postComments = 1;
+
+  cosmos.base.query.v1beta1.PageRequest pagination = 2;
+}

proto/blog/v1/tx.proto

@@ -6,6 +6,7 @@ option go_package = "github.com/regen-network/bec/x/blog";
 // Msg is the blog.v1 Msg service
 service Msg {
   rpc CreatePost(MsgCreatePost) returns (MsgCreatePostResponse);
+  rpc CreatePostComment(MsgCreatePostComment) returns (MsgCreatePostCommentResponse);
 }
 
 // MsgCreatePost is the Msg/CreatePost request type.
@@ -18,3 +19,13 @@ message MsgCreatePost {
 
 // MsgCreatePostResponse is the Msg/CreatePost response type.
 message MsgCreatePostResponse {}
+
+// MsgCreatePostComment is the Msg/CreatePostCOmment request type.
+message MsgCreatePostComment {
+  string slug = 1;
+  string author = 2;
+  string body = 3;
+}
+
+// MsgCreatePostCommentResponse  is the Msg/CreatePostResponse response type.
+message MsgCreatePostCommentResponse {}

proto/blog/v1/types.proto

@@ -11,3 +11,11 @@ message Post {
   string title = 3;
   string body = 4;
 }
+
+message PostComment {
+  // slug is a short human-readable string used in commect for connecting with post.
+  // Used as unique.
+  string slug = 1;
+  string author = 2;
+  string body = 3;
+}

x/blog/client/cli/query.go

@@ -3,8 +3,6 @@ package cli
 import (
 	"fmt"
 
-	// "strings"
-
 	"github.com/regen-network/bec/x/blog"
 	"github.com/spf13/cobra"
 
@@ -24,6 +22,7 @@ func GetQueryCmd() *cobra.Command {
 	}
 
 	cmd.AddCommand(CmdAllPosts())
+	cmd.AddCommand(CmdAllPostComments())
 
 	return cmd
 }
@@ -63,3 +62,43 @@ func CmdAllPosts() *cobra.Command {
 
 	return cmd
 }
+
+func CmdAllPostComments() *cobra.Command {
+	cmd := &cobra.Command{
+		Use:   "list-comments [post_slug]",
+		Short: "list all comments by post",
+		Args:  cobra.ExactArgs(1),
+		RunE: func(cmd *cobra.Command, args []string) error {
+			argsPostSlug := string(args[0])
+
+			clientCtx, err := client.GetClientQueryContext(cmd)
+			if err != nil {
+				return err
+			}
+
+			pageReq, err := client.ReadPageRequest(cmd.Flags())
+			if err != nil {
+				return err
+			}
+
+			queryClient := blog.NewQueryClient(clientCtx)
+
+			params := &blog.QueryAllPostCommentsRequest{
+				Pagination: pageReq,
+				PostSlug:   argsPostSlug,
+			}
+
+			res, err := queryClient.AllPostComments(cmd.Context(), params)
+			if err != nil {
+				return err
+			}
+
+			return clientCtx.PrintProto(res)
+		},
+	}
+
+	flags.AddQueryFlagsToCmd(cmd)
+	flags.AddPaginationFlagsToCmd(cmd, "blog")
+
+	return cmd
+}

x/blog/client/cli/tx.go

@@ -22,6 +22,7 @@ func GetTxCmd() *cobra.Command {
 	}
 
 	cmd.AddCommand(CmdCreatePost())
+	cmd.AddCommand(CmdCreatePostComment())
 
 	return cmd
 }
@@ -61,3 +62,37 @@ func CmdCreatePost() *cobra.Command {
 
 	return cmd
 }
+
+func CmdCreatePostComment() *cobra.Command {
+	cmd := &cobra.Command{
+		Use:   "create-comment [author] [slug] [body]",
+		Short: "Creates a new comment for post",
+		Args:  cobra.ExactArgs(3),
+		RunE: func(cmd *cobra.Command, args []string) error {
+			err := cmd.Flags().Set(flags.FlagFrom, args[0])
+			if err != nil {
+				return err
+			}
+
+			argsSlug := string(args[1])
+			argsBody := string(args[2])
+
+			clientCtx, err := client.GetClientTxContext(cmd)
+			if err != nil {
+				return err
+			}
+
+			msg := &blog.MsgCreatePostComment{
+				Author: clientCtx.GetFromAddress().String(),
+				Slug:   argsSlug,
+				Body:   argsBody,
+			}
+
+			return tx.GenerateOrBroadcastTxCLI(clientCtx, cmd.Flags(), msg)
+		},
+	}
+
+	flags.AddTxFlagsToCmd(cmd)
+
+	return cmd
+}

x/blog/keys.go

@@ -4,7 +4,8 @@ const (
 	ModuleName = "blog"
 	StoreKey   = ModuleName
 
-	PostKey = "post"
+	PostKey        = "post"
+	PostCommentKey = "post_comment"
 )
 
 func KeyPrefix(p string) []byte {