# VBase 集成指南

## 1. 引入路由

```go
import "github.com/veypi/vbase/api"

func main() {
    // 挂载 vbase 路由到 /api/vb
    rootRouter.Extend("/api/vb", api.Router)
}
```

## 2. 配置权限中间件

```go
import "github.com/veypi/vbase/api/middleware"

// 全局启用路由权限检查（推荐）
router.Use(middleware.Perm("your-domain"))

// 未配置的接口默认拒绝
// 无权限时返回 X-Required-URL 响应头
```

## 3. 注册路由权限

### 3.1 自动注册（推荐）

```go
// 启动时自动扫描并注册所有路由
middleware.InitVBaseRoutePolicies()

// 首次启动后，在数据库中修改权限配置即可
```

### 3.2 手动注册

```go
// 公开接口
middleware.RegisterRoutePolicy("myapp", "/api", "/public", "GET", "public", "read", true)

// 需要权限的接口
middleware.RegisterRoutePolicy("myapp", "/api", "/users", "GET", "user", "list", false)
middleware.RegisterRoutePolicy("myapp", "/api", "/users/{id}", "PATCH", "user", "update", false)

// 重新加载缓存
middleware.ReloadRoutePolicies()
```

## 4. 数据库配置权限

### 4.1 路由权限表 (route_policies)

| 字段 | 说明 | 示例 |
|------|------|------|
| domain | 领域标识 | "myapp" |
| prefix | 路由前缀 | "/api" |
| pattern | 路由模式 | "/users/{id}" |
| method | HTTP方法 | "GET" |
| resource | 资源类型 | "user" |
| action | 操作类型 | "read" |
| effect | 效果 | "allow"/"deny" |
| condition | 条件 | "owner"/"admin" |
| required_url | 申请地址 | "/apply-perm?r=user&a=read" |
| is_public | 是否公开 | true/false |

### 4.2 用户权限表 (policies)

```sql
-- 用户拥有 user:read 权限
INSERT INTO policies (code, resource, action, effect)
VALUES ('user-read', 'user', 'read', 'allow');

-- 关联到角色
INSERT INTO roles (code, name, policy_ids)
VALUES ('viewer', '查看者', 'policy-id-1,policy-id-2');
```

## 5. 在 Handler 中设置资源所有者

```go
func getUser(x *vigo.X, req *GetUserReq) (*User, error) {
    user := queryUser(req.ID)

    // 设置所有者到上下文，用于 condition=owner 检查
    x.Set("owner_id", user.ID)

    return user, nil
}
```

## 6. 完整示例

```go
package main

import (
    "github.com/veypi/vbase/api"
    "github.com/veypi/vbase/api/middleware"
    "github.com/veypi/vigo"
)

func main() {
    r := vigo.NewRouter()

    // 1. 挂载 vbase
    r.Extend("/api/vb", api.Router)

    // 2. 业务路由
    api := r.SubRouter("/api/v1")

    // 3. 启用权限检查
    api.Use(middleware.AuthRequired())
    api.Use(middleware.OrgContext())
    api.Use(middleware.Perm("myapp"))

    // 4. 注册权限（只需一次，后续在数据库中配置）
    middleware.RegisterRoutePolicy("myapp", "/api/v1", "/projects", "GET", "project", "list", false)
    middleware.RegisterRoutePolicy("myapp", "/api/v1", "/projects", "POST", "project", "create", false)
    middleware.RegisterRoutePolicy("myapp", "/api/v1", "/projects/{id}", "GET", "project", "read", false)
    middleware.RegisterRoutePolicy("myapp", "/api/v1", "/projects/{id}", "PATCH", "project", "update", false)
    middleware.RegisterRoutePolicy("myapp", "/api/v1", "/projects/{id}", "DELETE", "project", "delete", false)

    // 5. 无需在 handler 中加权限代码
    api.Get("/projects", "项目列表", listProjects)
    api.Post("/projects", "创建项目", createProject)
    api.Get("/projects/{id}", "项目详情", getProject)
    api.Patch("/projects/{id}", "更新项目", updateProject)
    api.Delete("/projects/{id}", "删除项目", deleteProject)

    vigo.Run(r)
}
```

## 7. 权限检查流程

```
请求 → AuthRequired(认证) → OrgContext(组织) → Perm(权限检查) → Handler
                              ↓
                    查找 route_policies
                              ↓
                    匹配 domain + method + path
                              ↓
                    检查 resource:action 权限
                              ↓
                    无权限 → 返回 X-Required-URL
```

## 8. 配置热更新

```go
// 修改数据库后，调用 API 刷新缓存
middleware.ReloadRoutePolicies()
```

无需重启服务，权限配置实时生效。