chore(db): seed some data

Signed-off-by: Yiyang Wu <toolmanp@outlook.com>

internal/fabric/offchain/db.go

@@ -1,6 +1,7 @@
 package offchain
 
 import (
+	"errors"
 	"fmt"
 
 	"github.com/Cealgull/Middleware/internal/config"
@@ -72,6 +73,26 @@ func NewOffchainStore(dialector gorm.Dialector, config *config.PostgresGormConfi
 		return nil, err
 	}
 
+	if err := db.Model(&User{}).First(&User{}).Error; errors.Is(err, gorm.ErrRecordNotFound) {
+		wallet := "0x12345678"
+		var _ = db.Create(&User{Username: "admin", Avatar: "", Wallet: wallet})
+		var _ = db.Create(&Profile{Signature: "this is a signature", UserWallet: &wallet})
+		var _ = db.Create(&CategoryGroup{Name: "General", Color: "#E25E3E"})
+		var _ = db.Create(&Category{CategoryGroupName: "General", Name: "General Discussion", Color: "#E25E3E"})
+		var _ = db.Create(&Category{CategoryGroupName: "General", Name: "General Topic", Color: "#C63D2F"})
+		var _ = db.Create(&[]*Tag{{CreatorWallet: "0x12345678", Name: "tag1"},
+			{CreatorWallet: "0x12345678", Name: "tag2"},
+			{CreatorWallet: "0x12345678", Name: "tag3"}})
+		var _ = db.Create(&Topic{Title: "this is a test topic",
+			Hash:             "hash1",
+			Content:          "Genshin Impact is a good game",
+			CreatorWallet:    "0x12345678",
+			CategoryAssigned: &CategoryRelation{CategoryName: "General Topic"}})
+    var _ = db.Create(&Post{Hash: "post1Hash", CreatorWallet: "0x12345678", BelongToHash: "hash1", Content: "this is a test post"})
+		id := uint(1)
+    var _ = db.Create(&Post{Hash: "post2Hash", CreatorWallet: "0x12345678", BelongToHash: "hash1", Content: "this is a test post", ReplyToID: &id})
+	}
+
 	if config.Prometheus.Enabled {
 		var _ = db.Use(prometheus.New(
 			prometheus.Config{