Create gists from git http server endpoint (#95)

internal/memdb/memdb.go

@@ -0,0 +1,72 @@
+package memdb
+
+import "github.com/hashicorp/go-memdb"
+import ogdb "github.com/thomiceli/opengist/internal/db"
+
+var db *memdb.MemDB
+
+type GistPush struct {
+	UserID uint
+	Gist   *ogdb.Gist
+}
+
+func Setup() error {
+	var err error
+	schema := &memdb.DBSchema{
+		Tables: map[string]*memdb.TableSchema{
+			"gist_push": {
+				Name: "gist_push",
+				Indexes: map[string]*memdb.IndexSchema{
+					"id": {
+						Name:    "id",
+						Unique:  true,
+						Indexer: &memdb.UintFieldIndex{Field: "UserID"},
+					},
+				},
+			},
+		},
+	}
+
+	db, err = memdb.NewMemDB(schema)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func InsertGistPush(userId uint, gist *ogdb.Gist) error {
+	txn := db.Txn(true)
+	if err := txn.Insert("gist_push", &GistPush{
+		UserID: userId,
+		Gist:   gist,
+	}); err != nil {
+		txn.Abort()
+		return err
+	}
+
+	txn.Commit()
+	return nil
+}
+
+func GetGistPushAndDelete(userId uint) (*GistPush, error) {
+	txn := db.Txn(true)
+	defer txn.Abort()
+
+	raw, err := txn.First("gist_push", "id", userId)
+	if err != nil {
+		return nil, err
+	}
+
+	if raw == nil {
+		return nil, nil
+	}
+
+	gistPush := raw.(*GistPush)
+	if err := txn.Delete("gist_push", gistPush); err != nil {
+		return nil, err
+	}
+
+	txn.Commit()
+	return gistPush, nil
+}