From d47e25bb6ea9e4f6e7362516f42a5943a98b7540 Mon Sep 17 00:00:00 2001
From: Viacheslav Gonkivskyi <viacheslavgonkivskyi@gmail.com>
Date: Wed, 6 Sep 2023 15:03:07 +0300
Subject: [PATCH] feat(rpc): add share cmd

---
 cmd/celestia/rpc.go   |   1 +
 cmd/celestia/share.go | 195 ++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 196 insertions(+)
 create mode 100644 cmd/celestia/share.go

diff --git a/cmd/celestia/rpc.go b/cmd/celestia/rpc.go
index 4425aa9ae5..1516211c3e 100644
--- a/cmd/celestia/rpc.go
+++ b/cmd/celestia/rpc.go
@@ -65,6 +65,7 @@ func init() {
 	rpcCmd.AddCommand(p2pCmd)
 	rpcCmd.AddCommand(dasCmd)
 	rpcCmd.AddCommand(headerCmd)
+	rpcCmd.AddCommand(shareCmd)
 	rootCmd.AddCommand(rpcCmd)
 }
 
diff --git a/cmd/celestia/share.go b/cmd/celestia/share.go
new file mode 100644
index 0000000000..d6abbfc773
--- /dev/null
+++ b/cmd/celestia/share.go
@@ -0,0 +1,195 @@
+package main
+
+import (
+	"encoding/hex"
+	"encoding/json"
+	"strconv"
+
+	"github.com/spf13/cobra"
+
+	"github.com/celestiaorg/celestia-app/pkg/da"
+
+	"github.com/celestiaorg/celestia-node/share"
+)
+
+func init() {
+	shareCmd.AddCommand(
+		sharesAvailableCmd,
+		probabilityOfAvailabilityCmd,
+		getSharesByNamespaceCmd,
+		getShare,
+		getEDS,
+	)
+}
+
+var shareCmd = &cobra.Command{
+	Use:   "share [command]",
+	Short: "Allows interaction with the Share Module via JSON-RPC",
+	Args:  cobra.NoArgs,
+}
+
+var sharesAvailableCmd = &cobra.Command{
+	Use:   "shares-available",
+	Short: "Subjectively validates if Shares committed to the given Root are available on the Network.",
+	Args:  cobra.ExactArgs(1),
+	RunE: func(cmd *cobra.Command, args []string) error {
+		client, err := rpcClient(cmd.Context())
+		if err != nil {
+			return err
+		}
+
+		raw, err := parseJSON(args[0])
+		if err != nil {
+			return err
+		}
+
+		root := da.MinDataAvailabilityHeader()
+		err = json.Unmarshal(raw, &root)
+		if err != nil {
+			return err
+		}
+
+		err = client.Share.SharesAvailable(cmd.Context(), &root)
+		formatter := func(data interface{}) interface{} {
+			err, ok := data.(error)
+			available := false
+			if !ok {
+				available = true
+			}
+			return struct {
+				Available bool   `json:"available"`
+				Hash      []byte `json:"dah_hash"`
+				Reason    error  `json:"reason,omitempty"`
+			}{
+				Available: available,
+				Hash:      []byte(args[0]),
+				Reason:    err,
+			}
+		}
+		return printOutput(err, nil, formatter)
+	},
+}
+
+var probabilityOfAvailabilityCmd = &cobra.Command{
+	Use:   "probability-of-availability",
+	Short: "Calculates the probability of the data square being available based on the number of samples collected.",
+	Args:  cobra.NoArgs,
+	RunE: func(cmd *cobra.Command, args []string) error {
+		client, err := rpcClient(cmd.Context())
+		if err != nil {
+			return err
+		}
+
+		prob := client.Share.ProbabilityOfAvailability(cmd.Context())
+		return printOutput(prob, nil, nil)
+	},
+}
+
+var getSharesByNamespaceCmd = &cobra.Command{
+	Use:   "get-shares-by-namespace[dah, namespace]",
+	Short: "Gets all shares from an EDS within the given namespace.",
+	Args:  cobra.ExactArgs(2),
+	RunE: func(cmd *cobra.Command, args []string) error {
+		client, err := rpcClient(cmd.Context())
+		if err != nil {
+			return err
+		}
+
+		raw, err := parseJSON(args[0])
+		if err != nil {
+			return err
+		}
+
+		root := da.MinDataAvailabilityHeader()
+		err = json.Unmarshal(raw, &root)
+		if err != nil {
+			return err
+		}
+
+		ns, err := parseV0Namespace(args[1])
+		if err != nil {
+			return err
+		}
+
+		shares, err := client.Share.GetSharesByNamespace(cmd.Context(), &root, ns)
+		return printOutput(shares, err, nil)
+	},
+}
+
+var getShare = &cobra.Command{
+	Use:   "get-share[dah, row, col]",
+	Short: "Gets a Share by coordinates in EDS.",
+	Args:  cobra.ExactArgs(3),
+	RunE: func(cmd *cobra.Command, args []string) error {
+		client, err := rpcClient(cmd.Context())
+		if err != nil {
+			return err
+		}
+
+		raw, err := parseJSON(args[0])
+		if err != nil {
+			return err
+		}
+
+		root := da.MinDataAvailabilityHeader()
+		err = json.Unmarshal(raw, &root)
+		if err != nil {
+			return err
+		}
+
+		row, err := strconv.ParseInt(args[1], 10, 64)
+		if err != nil {
+			return err
+		}
+
+		col, err := strconv.ParseInt(args[2], 10, 64)
+		if err != nil {
+			return err
+		}
+
+		s, err := client.Share.GetShare(cmd.Context(), &root, int(row), int(col))
+
+		formatter := func(data interface{}) interface{} {
+			sh, ok := data.(share.Share)
+			if !ok {
+				return data
+			}
+
+			ns := hex.EncodeToString(share.GetNamespace(sh))
+			return struct {
+				Namespace string `json:"namespace"`
+				Data      []byte `json:"data"`
+			}{
+				Namespace: ns,
+				Data:      share.GetData(sh),
+			}
+		}
+		return printOutput(s, err, formatter)
+	},
+}
+
+var getEDS = &cobra.Command{
+	Use:   "get-eds[dah]",
+	Short: "Gets the full EDS identified by the given root",
+	Args:  cobra.ExactArgs(1),
+	RunE: func(cmd *cobra.Command, args []string) error {
+		client, err := rpcClient(cmd.Context())
+		if err != nil {
+			return err
+		}
+
+		raw, err := parseJSON(args[0])
+		if err != nil {
+			return err
+		}
+
+		root := da.MinDataAvailabilityHeader()
+		err = json.Unmarshal(raw, &root)
+		if err != nil {
+			return err
+		}
+
+		shares, err := client.Share.GetEDS(cmd.Context(), &root)
+		return printOutput(shares, err, nil)
+	},
+}