server code 4/27

server/internal/controller/dance/dance_v2_create.go

@@ -0,0 +1,66 @@
+/*
+SPDX-FileCopyrightText: 2026 M5Stack Technology CO LTD
+SPDX-License-Identifier: MIT
+*/
+
+package dance
+
+import (
+	"context"
+	"stackChan/internal/dao"
+	"stackChan/internal/model/do"
+
+	"github.com/gogf/gf/v2/database/gdb"
+	"github.com/gogf/gf/v2/errors/gcode"
+	"github.com/gogf/gf/v2/errors/gerror"
+	"github.com/gogf/gf/v2/frame/g"
+
+	"stackChan/api/dance/v2"
+)
+
+func (c *ControllerV2) Create(ctx context.Context, req *v2.CreateReq) (res *v2.CreateRes, err error) {
+	mac := req.Mac
+	if req.DanceName == "" {
+		return nil, gerror.NewCode(gcode.CodeInvalidParameter, "Dance name cannot be empty")
+	}
+	if len(req.DanceData) == 0 || string(req.DanceData) == "null" {
+		return nil, gerror.NewCode(gcode.CodeInvalidParameter, "Dance data cannot be empty or null")
+	}
+	err = g.DB().Transaction(ctx, func(ctx context.Context, tx gdb.TX) error {
+		device, err := dao.Device.Ctx(ctx).TX(tx).Where("mac=?", mac).One()
+		if err != nil && !gerror.HasCode(err, gcode.CodeNotFound) {
+			return gerror.NewCode(gcode.CodeInternalError, "Failed to query device: %v", err.Error())
+		}
+		if device.IsEmpty() {
+			_, err = dao.Device.Ctx(ctx).TX(tx).Data(dao.Device.Columns().Mac, mac).Insert()
+			if err != nil {
+				return gerror.NewCode(gcode.CodeInternalError, "Failed to create device: %v", err.Error())
+			}
+		}
+		exist, err := dao.DeviceDance.Ctx(ctx).TX(tx).
+			Where("mac=?", mac).
+			Where("dance_name=?", req.DanceName).
+			Exist()
+		if err != nil {
+			return gerror.NewCode(gcode.CodeInternalError, "Failed to check duplicate dance data: %v", err.Error())
+		}
+		if exist {
+			return gerror.NewCode(gcode.CodeBusinessValidationFailed, "Dance data with MAC %s and name '%s' already exists", mac, req.DanceName)
+		}
+		_, err = dao.DeviceDance.Ctx(ctx).TX(tx).Data(do.DeviceDance{
+			Mac:       mac,
+			DanceData: req.DanceData,
+			DanceName: req.DanceName,
+			MusicUrl:  req.MusicUrl,
+		}).Insert()
+		if err != nil {
+			return gerror.NewCode(gcode.CodeInternalError, "Failed to insert dance data: %v", err.Error())
+		}
+
+		return nil
+	})
+	if err != nil {
+		return nil, err
+	}
+	return new(v2.CreateRes("Dance data saved successfully")), nil
+}