feat: 接入微信小程序支付

server-rs/crates/module-auth/src/domain.rs

@@ -118,6 +118,14 @@ pub struct WechatIdentityProfile {
     pub avatar_url: Option<String>,
 }
 
+/// 已绑定微信身份快照。
+#[derive(Clone, Debug, PartialEq, Eq)]
+pub struct WechatIdentityRecord {
+    pub user_id: String,
+    pub provider_uid: String,
+    pub provider_union_id: Option<String>,
+}
+
 /// 微信授权 state 快照。
 #[derive(Clone, Debug, PartialEq, Eq)]
 pub struct WechatAuthStateRecord {

server-rs/crates/module-auth/src/lib.rs

@@ -797,6 +797,13 @@ impl WechatAuthService {
             created: true,
         })
     }
+
+    pub fn get_identity_by_user_id(
+        &self,
+        user_id: &str,
+    ) -> Result<Option<WechatIdentityRecord>, WechatAuthError> {
+        self.store.get_wechat_identity_by_user_id(user_id)
+    }
 }
 
 impl AuthUserService {
@@ -1342,6 +1349,29 @@ impl InMemoryAuthStore {
             .map(|stored| stored.user.clone()))
     }
 
+    fn get_wechat_identity_by_user_id(
+        &self,
+        user_id: &str,
+    ) -> Result<Option<WechatIdentityRecord>, WechatAuthError> {
+        let state = self
+            .inner
+            .lock()
+            .map_err(|_| WechatAuthError::Store("用户仓储锁已中毒".to_string()))?;
+        let Some(identity) = state
+            .wechat_identity_by_provider_uid
+            .values()
+            .find(|identity| identity.user_id == user_id.trim())
+        else {
+            return Ok(None);
+        };
+
+        Ok(Some(WechatIdentityRecord {
+            user_id: identity.user_id.clone(),
+            provider_uid: identity.provider_uid.clone(),
+            provider_union_id: identity.provider_union_id.clone(),
+        }))
+    }
+
     fn refresh_wechat_identity_profile(
         &self,
         user_id: &str,