Add get role controller. Optimize code.

src/main/kotlin/top/fatweb/api/converter/permission/RoleConverter.kt

@@ -0,0 +1,36 @@
+package top.fatweb.api.converter.permission
+
+import com.baomidou.mybatisplus.core.metadata.IPage
+import top.fatweb.api.entity.permission.Power
+import top.fatweb.api.entity.permission.Role
+import top.fatweb.api.param.authentication.RoleAddParam
+import top.fatweb.api.vo.PageVo
+import top.fatweb.api.vo.permission.RoleVo
+
+object RoleConverter {
+    fun rolePageToRolePageVo(rolePage: IPage<Role>): PageVo<RoleVo> = PageVo(
+        rolePage.total,
+        rolePage.pages,
+        rolePage.size,
+        rolePage.current,
+        rolePage.records.map {
+            RoleVo(
+                id = it.id,
+                name = it.name,
+                enable = it.enable == 1
+            )
+        }
+    )
+
+    fun roleAddParamToRole(roleAddParam: RoleAddParam): Role = Role().apply {
+        name = roleAddParam.name
+        enable = if (roleAddParam.enable) 1 else 0
+        powers = roleAddParam.powerIds?.map { Power().apply { id = it } }
+    }
+
+    fun roleToRoleVo(role: Role): RoleVo = RoleVo(
+        id = role.id,
+        name = role.name,
+        enable = role.enable == 1
+    )
+}