Start server-side channel read RPC handlers and simplify API spec

2026-03-30 14:32:15 +03:00
parent eb5593c7be
commit 9723696b2c
20 changed files with 1604 additions and 45 deletions
@@ -0,0 +1,208 @@
+# 06. Channels Read API
+
+## Человеко-читаемое объяснение
+Эти 3 функции — это **чтение данных каналов** для UI:
+
+1. `ListSubscriptionsFeed` — отдает данные для экрана списка каналов:
+   - ваши каналы (личный + созданные вами),
+   - каналы пользователей, на кого вы подписаны,
+   - отдельные каналы, на которые вы подписаны напрямую.
+
+2. `GetChannelMessages` — отдает полную ленту одного канала (пока без курсоров, загружается сразу целиком),
+   включая версии сообщений, лайки и ответы.
+
+3. `GetMessageThread` — отдает дерево обсуждения вокруг конкретного сообщения:
+   предки, фокус-сообщение, потомки.
+
+> На первом этапе мы **не используем курсоры** (`nextCursor`) и загружаем полные списки.
+
+---
+
+## 1) ListSubscriptionsFeed
+
+### Request
+```json
+{
+  "op": "ListSubscriptionsFeed",
+  "requestId": "req-1",
+  "payload": {
+    "login": "Alice",
+    "limit": 200
+  }
+}
+```
+
+### Response (success)
+```json
+{
+  "op": "ListSubscriptionsFeed",
+  "requestId": "req-1",
+  "status": 200,
+  "ok": true,
+  "payload": {
+    "login": "Alice",
+    "ownedChannels": [
+      {
+        "channel": {
+          "ownerLogin": "Alice",
+          "ownerBlockchainName": "alice-001",
+          "channelName": "0",
+          "personal": true,
+          "channelRoot": { "blockNumber": 0, "blockHash": "..." }
+        },
+        "messagesCount": 120,
+        "lastMessage": {
+          "messageRef": { "blockNumber": 921, "blockHash": "..." },
+          "text": "последняя версия текста",
+          "createdAtMs": 1760000000000,
+          "authorLogin": "Alice",
+          "authorBlockchainName": "alice-001"
+        }
+      }
+    ],
+    "followedUsersChannels": [
+      {
+        "channel": {
+          "ownerLogin": "Bob",
+          "ownerBlockchainName": "bob-001",
+          "channelName": "0",
+          "personal": true,
+          "channelRoot": { "blockNumber": 0, "blockHash": "..." }
+        },
+        "messagesCount": 540,
+        "lastMessage": {
+          "messageRef": { "blockNumber": 922, "blockHash": "..." },
+          "text": "последняя версия текста",
+          "createdAtMs": 1760000100000,
+          "authorLogin": "Bob",
+          "authorBlockchainName": "bob-001"
+        }
+      }
+    ],
+    "followedChannels": [
+      {
+        "channel": {
+          "ownerLogin": "Carl",
+          "ownerBlockchainName": "carl-001",
+          "channelName": "market",
+          "personal": false,
+          "channelRoot": { "blockNumber": 456, "blockHash": "..." }
+        },
+        "messagesCount": 90,
+        "lastMessage": {
+          "messageRef": { "blockNumber": 1002, "blockHash": "..." },
+          "text": "актуальный текст",
+          "createdAtMs": 1760001000000,
+          "authorLogin": "Carl",
+          "authorBlockchainName": "carl-001"
+        }
+      }
+    ]
+  }
+}
+```
+
+---
+
+## 2) GetChannelMessages
+
+### Request
+```json
+{
+  "op": "GetChannelMessages",
+  "requestId": "req-2",
+  "payload": {
+    "channel": {
+      "ownerBlockchainName": "bob-001",
+      "channelRootBlockNumber": 123,
+      "channelRootBlockHash": "..."
+    },
+    "limit": 200,
+    "sort": "asc"
+  }
+}
+```
+
+### Response (success)
+```json
+{
+  "op": "GetChannelMessages",
+  "requestId": "req-2",
+  "status": 200,
+  "ok": true,
+  "payload": {
+    "channel": {
+      "ownerLogin": "Bob",
+      "ownerBlockchainName": "bob-001",
+      "channelName": "news",
+      "channelRoot": { "blockNumber": 123, "blockHash": "..." }
+    },
+    "messages": [
+      {
+        "messageRef": { "blockNumber": 140, "blockHash": "..." },
+        "authorLogin": "Bob",
+        "authorBlockchainName": "bob-001",
+        "createdAtMs": 1760000000000,
+        "text": "текущая версия",
+        "likesCount": 12,
+        "repliesCount": 3,
+        "versionsTotal": 4,
+        "versions": [
+          { "versionIndex": 1, "blockNumber": 140, "blockHash": "...", "text": "v1", "createdAtMs": 1760000000000 },
+          { "versionIndex": 2, "blockNumber": 155, "blockHash": "...", "text": "v2", "createdAtMs": 1760001000000 },
+          { "versionIndex": 3, "blockNumber": 170, "blockHash": "...", "text": "v3", "createdAtMs": 1760002000000 },
+          { "versionIndex": 4, "blockNumber": 199, "blockHash": "...", "text": "v4", "createdAtMs": 1760003000000 }
+        ]
+      }
+    ]
+  }
+}
+```
+
+---
+
+## 3) GetMessageThread
+
+### Request
+```json
+{
+  "op": "GetMessageThread",
+  "requestId": "req-3",
+  "payload": {
+    "message": {
+      "blockchainName": "bob-001",
+      "blockNumber": 333,
+      "blockHash": "..."
+    },
+    "depthUp": 20,
+    "depthDown": 2,
+    "limitChildrenPerNode": 50
+  }
+}
+```
+
+### Response (success)
+```json
+{
+  "op": "GetMessageThread",
+  "requestId": "req-3",
+  "status": 200,
+  "ok": true,
+  "payload": {
+    "ancestors": [MessageNode],
+    "focus": MessageNode,
+    "descendants": [MessageNodeTree]
+  }
+}
+```
+
+---
+
+## Reason codes
+- `bad_fields`
+- `user_not_found`
+- `channel_not_found`
+- `message_not_found`
+- `limit_too_large`
+- `channel_name_already_exists`
+- `internal_error`