437 lines
14 KiB
Markdown
437 lines
14 KiB
Markdown
# 背包接口 Flutter 对接
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本文描述 Flutter App 查询当前登录用户背包资源和佩戴装扮的 HTTP 接口。背包事实由 `wallet-service` 维护，App 只通过 gateway 读取当前用户自己的有效资源权益，不传 `user_id`，也不从礼物配置、房间消息或本地缓存推算用户是否拥有某个资源。
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## 接口
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Base URL：
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```text
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https://<gateway-host>
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```
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本地开发：
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```text
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http://127.0.0.1:13000
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```
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| 功能 | Method | Path |
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| --- | --- | --- |
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| 查询我的背包资源 | `GET` | `/api/v1/users/me/resources` |
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| 佩戴我的资源 | `POST` | `/api/v1/users/me/resources/{resource_id}/equip` |
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## 通用请求
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Headers：
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| Header | 必填 | 说明 |
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| --- | --- | --- |
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| `Authorization` | 是 | `Bearer <access_token>` |
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| `Content-Type` | POST 必填 | `application/json` |
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| `X-App-Code` | 否 | App 编码，默认 `lalu` |
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| `X-App-Package` | 否 | 包名解析 App 时使用 |
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| `X-App-Platform` | 否 | `android` / `ios` |
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统一成功响应：
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```json
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{
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"code": "OK",
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"message": "ok",
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"request_id": "req_abc",
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"data": {}
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}
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```
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统一失败响应：
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```json
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{
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"code": "INVALID_ARGUMENT",
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"message": "invalid argument",
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"request_id": "req_abc"
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}
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```
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Flutter 只在 `code == "OK"` 时读取 `data`；失败时把 `request_id` 写入客户端日志，便于后端排查。
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## 查询我的背包资源
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```http
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GET /api/v1/users/me/resources?resource_type=avatar_frame
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Authorization: Bearer <access_token>
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X-App-Code: lalu
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```
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Query：
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| 字段 | 必填 | 说明 |
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| --- | --- | --- |
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| `resource_type` | 否 | 不传返回全部有效权益；传入时只返回该类型。 |
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当前可用于背包过滤的资源类型：
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| 值 | 说明 | 可佩戴 |
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| --- | --- | --- |
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| `avatar_frame` | 头像框 | 是 |
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| `profile_card` | 资料卡 | 是 |
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| `vehicle` | 座驾 | 是 |
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| `chat_bubble` | 气泡 | 是 |
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| `badge` | 徽章 | 是 |
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| `gift` | 礼物权益 | 否 |
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| `floating_screen` | 飘屏 | 否 |
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| `mic_seat_icon` | 麦位图标 | 否 |
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| `mic_seat_animation` | 麦位动画 | 是 |
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| `emoji_pack` | 表情包 | 否 |
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接口只返回当前有效权益：`status=active`、已到生效时间、未过期、`remaining_quantity > 0`。`expires_at_ms = 0` 表示永久有效。
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成功响应：
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```json
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{
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"code": "OK",
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"message": "ok",
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"request_id": "req_abc",
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"data": {
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"items": [
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{
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"entitlement_id": "ent_10001_9001_1710000000000",
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"resource_id": 9001,
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"resource": {
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"resource_id": 9001,
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"resource_code": "vip_avatar_frame_1",
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"resource_type": "avatar_frame",
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"name": "VIP 头像框",
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"status": "active",
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"grantable": true,
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"grant_strategy": "extend_expiry",
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"usage_scopes": ["profile", "room"],
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"asset_url": "https://cdn.example/avatar-frame.png",
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"preview_url": "https://cdn.example/avatar-frame-preview.png",
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"animation_url": "",
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"metadata_json": "{}",
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"sort_order": 10,
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"created_at_ms": 1710000000000,
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"updated_at_ms": 1710000000000
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},
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"status": "active",
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"quantity": 1,
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"remaining_quantity": 1,
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"effective_at_ms": 1710000000000,
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"expires_at_ms": 1712592000000,
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"source_grant_id": "grant_xxx",
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"created_at_ms": 1710000000000,
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"updated_at_ms": 1710000000000,
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"equipped": true
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}
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],
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"total": 1
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}
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}
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```
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字段说明：
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| 字段 | 说明 |
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| --- | --- |
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| `items` | 当前登录用户的有效资源权益列表。 |
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| `total` | 当前响应条数，等于 `items.length`；该接口当前不分页。 |
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| `entitlement_id` | 用户拥有的具体权益 ID；同一 `resource_id` 可能有多条不同期限的权益。 |
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| `resource_id` | 资源 ID，用于佩戴接口路径。 |
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| `resource.resource_type` | 资源类型，用于客户端分组展示。 |
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| `resource.asset_url` | 主展示资源，客户端渲染优先使用。 |
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| `resource.preview_url` | 预览资源，可为空。 |
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| `resource.animation_url` | 动效资源，可为空。 |
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| `resource.metadata_json` | 后台配置的扩展 JSON 字符串；客户端按业务需要解析，不能假设一定有字段。 |
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| `quantity` | 发放时的权益数量。 |
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| `remaining_quantity` | 剩余可用数量；大于 0 才会在背包列表返回。 |
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| `effective_at_ms` | 生效时间，Unix epoch milliseconds。 |
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| `expires_at_ms` | 过期时间，Unix epoch milliseconds；`0` 表示永久。 |
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| `equipped` | 当前权益是否是该资源类型的已佩戴项。每个可佩戴 `resource_type` 同一时间最多一条为 `true`。 |
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## 佩戴我的资源
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```http
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POST /api/v1/users/me/resources/9001/equip
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Authorization: Bearer <access_token>
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Content-Type: application/json
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X-App-Code: lalu
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```
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Path：
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| 字段 | 必填 | 说明 |
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| --- | --- | --- |
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| `resource_id` | 是 | 要佩戴的资源 ID，必须来自当前用户有效背包权益。 |
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Body：
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```json
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{
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"entitlement_id": "ent_10001_9001_1710000000000"
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}
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```
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| 字段 | 必填 | 说明 |
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| --- | --- | --- |
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| `entitlement_id` | 否 | 指定佩戴哪一条权益；不传时后端自动选择该资源当前有效权益。 |
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成功响应：
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```json
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{
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"code": "OK",
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"message": "ok",
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"request_id": "req_abc",
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"data": {
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"entitlement_id": "ent_10001_9001_1710000000000",
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"resource_id": 9001,
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"resource": {
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"resource_id": 9001,
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"resource_code": "vip_avatar_frame_1",
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"resource_type": "avatar_frame",
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"name": "VIP 头像框",
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"status": "active",
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"asset_url": "https://cdn.example/avatar-frame.png",
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"preview_url": "https://cdn.example/avatar-frame-preview.png",
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"animation_url": "",
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"metadata_json": "{}",
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"sort_order": 10,
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"created_at_ms": 1710000000000,
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"updated_at_ms": 1710000000000
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},
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"status": "active",
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"quantity": 1,
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"remaining_quantity": 1,
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"effective_at_ms": 1710000000000,
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"expires_at_ms": 1712592000000,
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"source_grant_id": "grant_xxx",
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"created_at_ms": 1710000000000,
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"updated_at_ms": 1710000000000,
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"equipped": true
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}
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}
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```
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佩戴规则：
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| 规则 | 说明 |
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| --- | --- |
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| 可佩戴类型 | `avatar_frame`、`profile_card`、`vehicle`、`chat_bubble`、`badge`、`mic_seat_animation`。 |
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| 不可佩戴类型 | `gift`、`floating_screen`、`mic_seat_icon`、`emoji_pack`。 |
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| 同类替换 | 同一个 `resource_type` 只有一个当前佩戴项，新佩戴会替换旧佩戴。 |
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| 权益校验 | 必须是当前登录用户自己的有效权益；过期、禁用、剩余数量为 0 都不能佩戴。 |
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| 发放默认佩戴 | `badge`、`mic_seat_animation` 发放成功后默认佩戴。 |
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| 徽章展示 | `badge` 是拥有即佩戴的多装备资源；资料页多徽章展示仍使用 `/api/v1/badges/me` 和 `/api/v1/badges/display`。 |
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| 资料卡背景 | `profile_card` 只用于装扮资料卡；个人主页背景图使用用户资料字段 `profile_bg_img`，不走背包佩戴。 |
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常见错误：
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| HTTP | `code` | 场景 |
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| --- | --- | --- |
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| `400` | `INVALID_ARGUMENT` | `resource_id` 非法、资源类型不可佩戴、请求 JSON 无效。 |
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| `401` | `UNAUTHORIZED` | 未登录或 access token 无效。 |
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| `403` | `PROFILE_REQUIRED` | 当前账号未完成必填资料。 |
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| `404` | `NOT_FOUND` | 当前用户没有这条有效权益，或指定 `entitlement_id` 不存在。 |
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| `502` | `UPSTREAM_ERROR` | gateway 调 wallet-service 失败。 |
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## Flutter 解析示例
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```dart
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class ApiEnvelope<T> {
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ApiEnvelope({
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required this.code,
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required this.message,
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required this.requestId,
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this.data,
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});
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final String code;
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final String message;
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final String requestId;
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final T? data;
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factory ApiEnvelope.fromJson(
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Map<String, dynamic> json,
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T Function(Object? raw) parseData,
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) {
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return ApiEnvelope<T>(
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code: json['code'] as String? ?? '',
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message: json['message'] as String? ?? '',
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requestId: json['request_id'] as String? ?? '',
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data: json['data'] == null ? null : parseData(json['data']),
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);
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}
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}
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class BackpackResourceList {
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BackpackResourceList({
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required this.items,
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required this.total,
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});
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final List<BackpackResourceEntitlement> items;
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final int total;
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factory BackpackResourceList.fromJson(Object? raw) {
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final json = raw as Map<String, dynamic>? ?? const {};
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return BackpackResourceList(
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items: (json['items'] as List<dynamic>? ?? const [])
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.map((item) => BackpackResourceEntitlement.fromJson(item as Map<String, dynamic>))
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.toList(),
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total: (json['total'] as num?)?.toInt() ?? 0,
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);
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}
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}
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class BackpackResourceEntitlement {
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BackpackResourceEntitlement({
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required this.entitlementId,
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required this.resourceId,
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required this.resource,
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required this.status,
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required this.quantity,
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required this.remainingQuantity,
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required this.effectiveAtMs,
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required this.expiresAtMs,
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required this.sourceGrantId,
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required this.createdAtMs,
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required this.updatedAtMs,
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required this.equipped,
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});
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final String entitlementId;
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final int resourceId;
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final BackpackResource resource;
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final String status;
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final int quantity;
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final int remainingQuantity;
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final int effectiveAtMs;
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final int expiresAtMs;
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final String sourceGrantId;
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final int createdAtMs;
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final int updatedAtMs;
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final bool equipped;
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bool get permanent => expiresAtMs == 0;
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bool get equipable => const {
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'avatar_frame',
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'profile_card',
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'vehicle',
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'chat_bubble',
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'badge',
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}.contains(resource.resourceType);
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factory BackpackResourceEntitlement.fromJson(Map<String, dynamic> json) {
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return BackpackResourceEntitlement(
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entitlementId: json['entitlement_id'] as String? ?? '',
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resourceId: (json['resource_id'] as num?)?.toInt() ?? 0,
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resource: BackpackResource.fromJson(json['resource'] as Map<String, dynamic>? ?? const {}),
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status: json['status'] as String? ?? '',
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quantity: (json['quantity'] as num?)?.toInt() ?? 0,
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remainingQuantity: (json['remaining_quantity'] as num?)?.toInt() ?? 0,
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effectiveAtMs: (json['effective_at_ms'] as num?)?.toInt() ?? 0,
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expiresAtMs: (json['expires_at_ms'] as num?)?.toInt() ?? 0,
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sourceGrantId: json['source_grant_id'] as String? ?? '',
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createdAtMs: (json['created_at_ms'] as num?)?.toInt() ?? 0,
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updatedAtMs: (json['updated_at_ms'] as num?)?.toInt() ?? 0,
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equipped: json['equipped'] as bool? ?? false,
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);
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}
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}
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class BackpackResource {
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BackpackResource({
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required this.resourceId,
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required this.resourceCode,
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required this.resourceType,
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required this.name,
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required this.status,
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required this.assetUrl,
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required this.previewUrl,
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required this.animationUrl,
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required this.metadataJson,
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required this.sortOrder,
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});
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final int resourceId;
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final String resourceCode;
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final String resourceType;
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final String name;
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final String status;
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final String assetUrl;
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final String previewUrl;
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final String animationUrl;
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final String metadataJson;
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final int sortOrder;
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factory BackpackResource.fromJson(Map<String, dynamic> json) {
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return BackpackResource(
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resourceId: (json['resource_id'] as num?)?.toInt() ?? 0,
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resourceCode: json['resource_code'] as String? ?? '',
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resourceType: json['resource_type'] as String? ?? '',
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name: json['name'] as String? ?? '',
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status: json['status'] as String? ?? '',
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assetUrl: json['asset_url'] as String? ?? '',
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previewUrl: json['preview_url'] as String? ?? '',
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animationUrl: json['animation_url'] as String? ?? '',
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metadataJson: json['metadata_json'] as String? ?? '{}',
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sortOrder: (json['sort_order'] as num?)?.toInt() ?? 0,
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);
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}
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}
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```
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## Flutter 调用示例
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```dart
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Future<BackpackResourceList> fetchBackpackResources({
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String? resourceType,
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}) async {
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final response = await dio.get<Map<String, dynamic>>(
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'/api/v1/users/me/resources',
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queryParameters: {
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if (resourceType != null && resourceType.isNotEmpty) 'resource_type': resourceType,
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},
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);
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final envelope = ApiEnvelope<BackpackResourceList>.fromJson(
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response.data ?? const {},
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BackpackResourceList.fromJson,
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);
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if (envelope.code != 'OK' || envelope.data == null) {
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throw ApiException(envelope.code, envelope.message, envelope.requestId);
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}
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return envelope.data!;
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}
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Future<BackpackResourceEntitlement> equipBackpackResource({
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required int resourceId,
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String? entitlementId,
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}) async {
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final response = await dio.post<Map<String, dynamic>>(
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'/api/v1/users/me/resources/$resourceId/equip',
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data: {
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if (entitlementId != null && entitlementId.isNotEmpty) 'entitlement_id': entitlementId,
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},
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);
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final envelope = ApiEnvelope<BackpackResourceEntitlement>.fromJson(
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response.data ?? const {},
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(raw) => BackpackResourceEntitlement.fromJson(raw as Map<String, dynamic>? ?? const {}),
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);
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if (envelope.code != 'OK' || envelope.data == null) {
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throw ApiException(envelope.code, envelope.message, envelope.requestId);
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}
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return envelope.data!;
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}
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```
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客户端交互建议：
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1. 背包首页先请求 `/api/v1/users/me/resources`，本地按 `resource.resource_type` 分组渲染 Tab。
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2. 单类型页面使用 `resource_type` 过滤，减少本地筛选和无关图片预加载。
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3. 佩戴成功后可直接用响应里的 `equipped=true` 更新当前类型列表：同类型其他 item 置为 `false`，当前 item 置为 `true`。
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4. 进入资料页或房间展示前，如需要最新装扮状态，重新拉背包或对应资料展示接口，不依赖旧缓存。
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5. 所有 `*_ms` 都是 Unix epoch milliseconds，展示层按用户本地时区格式化；不要把本地时区传回后端做背包有效期判断。
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