updates

lua/share/providers/slack.lua

@@ -1,10 +1,24 @@
 local curl = require "plenary.curl"
 
+local function merge_lists(t1, t2)
+  local result = {}
+  table.foreach(t1, function(_, v) table.insert(result, v) end)
+  table.foreach(t2, function(_, v) table.insert(result, v) end)
+  return result
+end
+
+local function test_http_response(res)
+  local body = vim.fn.json_decode(res.body)
+  if body.error then
+    error("Slack error " .. body.error)
+  end
+end
+
 local M = function(slack_token)
   local token = slack_token
   local function post(receiver, content, opts)
     local text = content
-    if opts.format == "markdown" then
+    if opts.format == "code" then
       text = "```\n" .. text .. "```"
     end
     local body = {
@@ -19,6 +33,27 @@ local M = function(slack_token)
         content_type = "application/json"
       }
     })
+    test_http_response(res)
+  end
+
+  local function fetch_channels()
+    local query = {
+      types = "public_channel,private_channel",
+      exclude_archived = "true",
+      limit = "1000",
+    }
+    local res = curl.get("https://slack.com/api/conversations.list", {
+      query = query,
+      headers = {
+        Authorization = "Bearer " .. token
+      }
+    })
+    test_http_response(res)
+    local channels = vim.fn.json_decode(res.body).channels
+    table.foreach(channels, function(_, k)
+      k.name = "# " .. k.name
+    end)
+    return channels
   end
 
   local function fetch_users()
@@ -27,12 +62,26 @@ local M = function(slack_token)
         Authorization = "Bearer " .. token
       }
     })
+    test_http_response(res)
     local users = vim.fn.json_decode(res.body).members
+    table.foreach(users, function(_, k)
+      local name = k.real_name or k.name
+      if k.real_name then
+        name = name .. " (" .. k.name .. ")"
+      end
+      k.name = "@ " .. name
+    end)
     return users
   end
 
+  local function fetch_recipients()
+    local users = fetch_users()
+    local channels = fetch_channels()
+    return merge_lists(users, channels)
+  end
+
   return {
-    fetch_users = fetch_users,
+    fetch_recipients = fetch_recipients,
     post = post,
   }
 end