feat(cf): 管理端 CF 返佣阶梯配置接口（list/save/delete）

cfc-backend/src/main/java/com/etotem/cfc/controller/admin/AdminCfRateTierController.java

@@ -0,0 +1,50 @@
+package com.etotem.cfc.controller.admin;
+
+import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
+import com.etotem.cfc.common.Result;
+import com.etotem.cfc.entity.CfRateTier;
+import com.etotem.cfc.mapper.CfRateTierMapper;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import javax.annotation.Resource;
+import java.util.Date;
+import java.util.List;
+import java.util.Map;
+
+@RestController
+@RequestMapping("/api/admin/cf-rate-tier")
+public class AdminCfRateTierController {
+
+    @Resource
+    private CfRateTierMapper cfRateTierMapper;
+
+    @PostMapping("/list")
+    public Result<List<CfRateTier>> list() {
+        return Result.success(cfRateTierMapper.selectList(
+                new LambdaQueryWrapper<CfRateTier>().orderByAsc(CfRateTier::getSortOrder)));
+    }
+
+    @PostMapping("/save")
+    public Result<String> save(@RequestBody CfRateTier tier) {
+        if (tier.getId() != null) {
+            tier.setUpdatedAt(new Date());
+            cfRateTierMapper.updateById(tier);
+        } else {
+            tier.setCreatedAt(new Date());
+            tier.setUpdatedAt(new Date());
+            if (tier.getEnabled() == null) tier.setEnabled(1);
+            cfRateTierMapper.insert(tier);
+        }
+        return Result.success("已保存");
+    }
+
+    @PostMapping("/delete")
+    public Result<String> delete(@RequestBody Map<String, Object> params) {
+        Long id = ((Number) params.get("id")).longValue();
+        cfRateTierMapper.deleteById(id);
+        return Result.success("已删除");
+    }
+}