adding channel summary method

doc/api.oa3

@@ -2144,6 +2144,37 @@ paths:
         '500':
           description: internal server error
   
+  /content/channels/{channelId}/summary:
+    get:
+      tags:
+        - content
+      description: Get summary of channel.
+      operationId: get-channel-summary
+      security:
+        - bearerAuth: []
+      parameters:
+        - name: channelId
+          in: path
+          description: specified channel id 
+          required: true
+          schema:
+            type: string
+      responses:
+        '200':
+          description: success
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/ChannelSummary'
+        '401':
+          description: invalid password
+        '404':
+          description: channel not found
+        '410':
+          description: account disabled
+        '500':
+          description: internal server error
+          
   /content/channels/{channelId}:
     delete:
       tags:
@@ -3439,6 +3470,8 @@ components:
         topicRevision:
           type: integer
           format: int64
+        channelSummary:
+          $ref: '#/components/schemas/ChannelSummary'
         channelDetail:
           $ref: '#/components/schemas/ChannelDetail'
           
@@ -3467,6 +3500,12 @@ components:
           items:
             type: string
             
+    ChannelSummary:
+      type: object
+      properties:
+        lastTopic:
+          $ref: '#/components/schemas/TopicDetail'
+          
     ChannelContacts:
       type: object
       required:

net/server/internal/api_getChannelDetail.go

@@ -0,0 +1,63 @@
+package databag
+
+import (
+  "errors"
+  "net/http"
+  "gorm.io/gorm"
+  "github.com/gorilla/mux"
+  "databag/internal/store"
+)
+
+func GetChannelDetail(w http.ResponseWriter, r *http.Request) {
+
+  // scan parameters
+  params := mux.Vars(r)
+  channelId := params["channelId"]
+
+  var guid string
+  var act *store.Account
+  tokenType := ParamTokenType(r)
+  if tokenType == APP_TOKENAGENT {
+    account, code, err := ParamAgentToken(r, false);
+    if err != nil {
+      ErrResponse(w, code, err)
+      return
+    }
+    act = account
+  } else if tokenType == APP_TOKENCONTACT {
+    card, code, err := ParamContactToken(r, true)
+    if err != nil {
+      ErrResponse(w, code, err)
+      return
+    }
+    act = &card.Account
+    guid = card.Guid
+  } else {
+    ErrResponse(w, http.StatusBadRequest, errors.New("unknown token type"))
+    return
+  }
+
+  // load channel
+  var slot store.ChannelSlot
+  if err := store.DB.Preload("Channel.Cards.CardSlot").Preload("Channel.Groups.Cards").Preload("Channel.Groups.GroupSlot").Where("account_id = ? AND channel_slot_id = ?", act.ID, channelId).First(&slot).Error; err != nil {
+    if errors.Is(err, gorm.ErrRecordNotFound) {
+      ErrResponse(w, http.StatusNotFound, err)
+    } else {
+      ErrResponse(w, http.StatusInternalServerError, err)
+    }
+    return
+  }
+
+  // return model data
+  if guid != "" {
+    if isChannelShared(guid, slot.Channel) {
+      WriteResponse(w, getChannelDetailModel(&slot, false))
+    } else {
+      ErrResponse(w, http.StatusNotFound, errors.New("channel not shared with requestor"));
+      return
+    }
+  } else {
+    WriteResponse(w, getChannelDetailModel(&slot, true))
+  }
+}
+

net/server/internal/api_getChannelSummary.go

@@ -0,0 +1,65 @@
+package databag
+
+import (
+  "errors"
+  "net/http"
+  "gorm.io/gorm"
+  "github.com/gorilla/mux"
+  "databag/internal/store"
+)
+
+func GetChannelSummary(w http.ResponseWriter, r *http.Request) {
+
+  // scan parameters
+  params := mux.Vars(r)
+  channelId := params["channelId"]
+
+  var guid string
+  var act *store.Account
+  tokenType := ParamTokenType(r)
+  if tokenType == APP_TOKENAGENT {
+    account, code, err := ParamAgentToken(r, false);
+    if err != nil {
+      ErrResponse(w, code, err)
+      return
+    }
+    act = account
+  } else if tokenType == APP_TOKENCONTACT {
+    card, code, err := ParamContactToken(r, true)
+    if err != nil {
+      ErrResponse(w, code, err)
+      return
+    }
+    act = &card.Account
+    guid = card.Guid
+  } else {
+    ErrResponse(w, http.StatusBadRequest, errors.New("unknown token type"))
+    return
+  }
+
+  // load channel
+  var slot store.ChannelSlot
+  if err := store.DB.Preload("Channel.Topics", func(db *gorm.DB) *gorm.DB {
+    return store.DB.Order("topics.id DESC").Limit(1)
+  }).Preload("Channel.Cards.CardSlot").Preload("Channel.Groups.Cards").Preload("Channel.Groups.GroupSlot").Where("account_id = ? AND channel_slot_id = ?", act.ID, channelId).First(&slot).Error; err != nil {
+    if errors.Is(err, gorm.ErrRecordNotFound) {
+      ErrResponse(w, http.StatusNotFound, err)
+    } else {
+      ErrResponse(w, http.StatusInternalServerError, err)
+    }
+    return
+  }
+
+  // return model data
+  if guid != "" {
+    if isChannelShared(guid, slot.Channel) {
+      WriteResponse(w, getChannelSummaryModel(&slot))
+    } else {
+      ErrResponse(w, http.StatusNotFound, errors.New("channel not shared with requestor"));
+      return
+    }
+  } else {
+    WriteResponse(w, getChannelSummaryModel(&slot))
+  }
+}
+

net/server/internal/api_getChannels.go

@@ -66,7 +66,9 @@ func GetChannels(w http.ResponseWriter, r *http.Request) {
         return
       }
     } else {
-      if err := store.DB.Preload("Channel.Cards.CardSlot").Preload("Channel.Groups.GroupSlot").Where("account_id = ? AND channel_id != 0", account.ID).Find(&slots).Error; err != nil {
+      if err := store.DB.Preload("Channel.Topics", func(db *gorm.DB) *gorm.DB {
+        return store.DB.Order("topics.id DESC").Limit(1)
+      }).Preload("Channel.Cards.CardSlot").Preload("Channel.Groups.GroupSlot").Where("account_id = ? AND channel_id != 0", account.ID).Find(&slots).Error; err != nil {
         ErrResponse(w, http.StatusInternalServerError, err)
         return
       }
@@ -102,14 +104,14 @@ func GetChannels(w http.ResponseWriter, r *http.Request) {
     account := &card.Account
     var slots []store.ChannelSlot
     if channelRevisionSet {
-      if err := store.DB.Preload("Channel.Topics", func(db *gorm.DB) *gorm.DB {
+      if err := store.DB.Preload("Channel.Cards").Preload("Channel.Groups.Cards").Where("account_id = ? AND revision > ?", account.ID, channelRevision).Find(&slots).Error; err != nil {
-        return store.DB.Order("topics.id DESC").Limit(1)
-      }).Preload("Channel.Cards").Preload("Channel.Groups.Cards").Where("account_id = ? AND revision > ?", account.ID, channelRevision).Find(&slots).Error; err != nil {
         ErrResponse(w, http.StatusInternalServerError, err)
         return
       }
     } else {
-      if err := store.DB.Preload("Channel.Cards").Preload("Channel.Groups.Cards").Where("account_id = ? AND channel_id != 0", account.ID).Find(&slots).Error; err != nil {
+      if err := store.DB.Preload("Channel.Topics", func(db *gorm.DB) *gorm.DB {
+        return store.DB.Order("topics.id DESC").Limit(1)
+      }).Preload("Channel.Cards").Preload("Channel.Groups.Cards").Where("account_id = ? AND channel_id != 0", account.ID).Find(&slots).Error; err != nil {
         ErrResponse(w, http.StatusInternalServerError, err)
         return
       }

net/server/internal/modelUtil.go

@@ -199,6 +199,27 @@ func getChannelDetailModel(slot *store.ChannelSlot, showList bool) *ChannelDetai
   }
 }
 
+func getChannelSummaryModel(slot *store.ChannelSlot) *ChannelSummary {
+
+  if slot.Channel == nil {
+    return nil
+  }
+
+  topicDetail := TopicDetail{};
+  if len(slot.Channel.Topics) > 0 {
+    topicDetail.Guid = slot.Channel.Topics[0].Guid;
+    topicDetail.DataType = slot.Channel.Topics[0].DataType;
+    topicDetail.Data = slot.Channel.Topics[0].Data;
+    topicDetail.Created = slot.Channel.Topics[0].Created;
+    topicDetail.Updated = slot.Channel.Topics[0].Updated;
+    topicDetail.Status = slot.Channel.Topics[0].Status;
+  }
+
+  return &ChannelSummary{
+    LastTopic: &topicDetail,
+  }
+}
+
 func getChannelModel(slot *store.ChannelSlot, showData bool, showList bool) *Channel {
 
   if !showData || slot.Channel == nil {
@@ -215,6 +236,7 @@ func getChannelModel(slot *store.ChannelSlot, showData bool, showList bool) *Cha
       DetailRevision: slot.Channel.DetailRevision,
       TopicRevision: slot.Channel.TopicRevision,
       ChannelDetail: getChannelDetailModel(slot, showList),
+      ChannelSummary: getChannelSummaryModel(slot),
     },
   }
 }

net/server/internal/models.go

@@ -175,6 +175,8 @@ type ChannelData struct {
 
   TopicRevision int64 `json:"topicRevision"`
 
+	ChannelSummary *ChannelSummary `json:"channelSummary,omitempty"`
+
 	ChannelDetail *ChannelDetail `json:"channelDetail,omitempty"`
 }
 
@@ -193,6 +195,11 @@ type ChannelDetail struct {
 	Members []string `json:"members"`
 }
 
+type ChannelSummary struct {
+
+	LastTopic *TopicDetail `json:"lastTopic,omitempty"`
+}
+
 type ChannelParams struct {
 
 	DataType string `json:"dataType"`
@@ -443,7 +450,7 @@ type TopicDetail struct {
 
 	Status string `json:"status"`
 
-  Transform string `json:"transform"`
+  Transform string `json:"transform,omitempty"`
 }
 
 type TopicTags struct {

net/server/internal/routers.go

@@ -545,6 +545,13 @@ var routes = Routes{
 		GetChannelDetail,
 	},
 
+	Route{
+		"GetChannelSummary",
+		strings.ToUpper("Get"),
+		"/content/channels/{channelId}/summary",
+		GetChannelSummary,
+	},
+
 	Route{
 		"GetChannelSubjectField",
 		strings.ToUpper("Get"),

net/web/src/api/getChannelDetail.js

@@ -0,0 +1,8 @@
+import { checkResponse, fetchWithTimeout } from './fetchUtil';
+
+export async function getChannelDetail(token, channelId) {
+  let detail = await fetchWithTimeout(`/content/channels/${channelId}/detail?agent=${token}`, { method: 'GET' });
+  checkResponse(detail)
+  return await detail.json()
+}
+

net/web/src/api/getChannelSummary.js

@@ -0,0 +1,8 @@
+import { checkResponse, fetchWithTimeout } from './fetchUtil';
+
+export async function getChannelSummary(token, channelId) {
+  let summary = await fetchWithTimeout(`/content/channels/${channelId}/summary?agent=${token}`, { method: 'GET' });
+  checkResponse(summary)
+  return await summary.json()
+}
+

net/web/src/api/getContactChannelDetail.js

@@ -0,0 +1,8 @@
+import { checkResponse, fetchWithTimeout } from './fetchUtil';
+
+export async function getContactChannelDetail(token, channelId) {
+  let detail = await fetchWithTimeout(`/content/channels/${channelId}/detail?contact=${token}`, { method: 'GET' });
+  checkResponse(detail)
+  return await detail.json()
+}
+

net/web/src/api/getContactChannelSummary.js

@@ -0,0 +1,8 @@
+import { checkResponse, fetchWithTimeout } from './fetchUtil';
+
+export async function getContactChannelSummary(token, channelId) {
+  let summary = await fetchWithTimeout(`/content/channels/${channelId}/summary?contact=${token}`, { method: 'GET' });
+  checkResponse(summary)
+  return await summary.json()
+}
+

net/web/src/context/useCardContext.hook.js

@@ -1,6 +1,7 @@
 import { useEffect, useState, useRef } from 'react';
 import { getContactChannels } from 'api/getContactChannels';
 import { getContactChannelDetail } from 'api/getContactChannelDetail';
+import { getContactChannelSummary } from 'api/getContactChannelSummary';
 import { getContactProfile } from 'api/getContactProfile';
 import { setCardProfile } from 'api/setCardProfile';
 import { getCards } from 'api/getCards';
@@ -116,15 +117,23 @@ export function useCardContext() {
         if (cur.data.detailRevision != channel.data.detailRevision) {
           if (channel.data.channelDetail != null) {
             cur.data.channelDetail = channel.data.channelDetail;
-            cur.data.detailRevision = channel.data.detailRevision;
           }
           else {
             let detail = await getContactChannelDetail(guid + "." + token, channel.id);
             cur.data.channelDetail = detail;
-            cur.data.detailRevision = channel.data.detailRevision;
           }
+          cur.data.detailRevision = channel.data.detailRevision;
+        }
+        if (cur.data.detailRevision != channel.data.detailRevision) {
+          if (channel.data.channelSummary != null) {
+            cur.data.channelSummary = channel.data.channelSummary;
+          }
+          else {
+            let summary = await getContactChannelSummary(guid + "." + token, channel.id);
+            cur.data.channelSummary = summary;
+          }
+          cur.data.topicRevision = channel.data.topicRevision;
         }
-        cur.data.topicRevision = channel.data.topicRevision;
         cur.revision = channel.revision;
         channelMap.set(channel.id, cur);
       }

net/web/src/context/useChannelContext.hook.js

@@ -1,6 +1,7 @@
 import { useEffect, useState, useRef } from 'react';
 import { getChannels } from 'api/getChannels';
 import { getChannelDetail } from 'api/getChannelDetail';
+import { getChannelSummary } from 'api/getChannelSummary';
 import { addChannel } from 'api/addChannel';
 import { addChannelTopic } from 'api/addChannelTopic';
 import { getChannelTopics } from 'api/getChannelTopics';
@@ -32,15 +33,23 @@ export function useChannelContext() {
         if (cur.data.detailRevision != channel.data.detailRevision) {
           if (channel.data.channelDetail != null) {
             cur.data.channelDetail = channel.data.channelDetail;
-            cur.data.detailRevision = channel.data.detailRevision;
           }
           else {
             let detail = await getChannelDetail(access.current, channel.id);
             cur.data.channelDetail = detail;
-            cur.data.detailRevision = channel.data.detailRevision;
           }
+          cur.data.detailRevision = channel.data.detailRevision;
+        }
+        if (cur.data.topicRevision != channel.data.topicRevision) {
+          if (channel.data.channelDetail != null) {
+            cur.data.channelDetail = channel.data.channelDetail;
+          }
+          else {
+            let summary = await getChannelSummary(access.current, channel.id);
+            cur.data.channelSummary = summary;
+          }
+          cur.data.topicRevision = channel.data.topicRevision;
         }
-        cur.data.topicRevision = channel.data.topicRevision;
         cur.revision = channel.revision;
         channels.current.set(channel.id, cur);
       }