feat: support searchapi (#1284)

lua/avante/config.lua

@@ -56,10 +56,39 @@ M._defaults = {
                     title = result.title,
                     link = result.link,
                     snippet = result.snippet,
+                    date = result.date,
                   }
                 end
               )
-              :take(5)
+              :take(10)
+              :totable()
+            return vim.json.encode(jsn), nil
+          end
+          return "", nil
+        end,
+      },
+      searchapi = {
+        api_key_name = "SEARCHAPI_API_KEY",
+        extra_request_body = {
+          engine = "google",
+        },
+        ---@type WebSearchEngineProviderResponseBodyFormatter
+        format_response_body = function(body)
+          if body.answer_box ~= nil then return body.answer_box.result, nil end
+          if body.organic_results ~= nil then
+            local jsn = vim
+              .iter(body.organic_results)
+              :map(
+                function(result)
+                  return {
+                    title = result.title,
+                    link = result.link,
+                    snippet = result.snippet,
+                    date = result.date,
+                  }
+                end
+              )
+              :take(10)
               :totable()
             return vim.json.encode(jsn), nil
           end
@@ -84,7 +113,7 @@ M._defaults = {
                   }
                 end
               )
-              :take(5)
+              :take(10)
               :totable()
             return vim.json.encode(jsn), nil
           end

lua/avante/llm_tools.lua

@@ -340,6 +340,23 @@ function M.web_search(opts, on_log)
     if resp.status ~= 200 then return nil, "Error: " .. resp.body end
     local jsn = vim.json.decode(resp.body)
     return search_engine.format_response_body(jsn)
+  elseif provider_type == "searchapi" then
+    local query_params = vim.tbl_deep_extend("force", {
+      api_key = api_key,
+      q = opts.query,
+    }, search_engine.extra_request_body)
+    local query_string = ""
+    for key, value in pairs(query_params) do
+      query_string = query_string .. key .. "=" .. vim.uri_encode(value) .. "&"
+    end
+    local resp = curl.get("https://searchapi.io/api/v1/search?" .. query_string, {
+      headers = {
+        ["Content-Type"] = "application/json",
+      },
+    })
+    if resp.status ~= 200 then return nil, "Error: " .. resp.body end
+    local jsn = vim.json.decode(resp.body)
+    return search_engine.format_response_body(jsn)
   elseif provider_type == "google" then
     local engine_id = os.getenv(search_engine.engine_id_name)
     if engine_id == nil or engine_id == "" then

lua/avante/templates/base.avanterules

@@ -20,6 +20,7 @@ Tools Usage Guide:
   - When attempting to modify a file that is not in the context, please first use the `list_files` tool and `search_files` tool to check if the file you want to modify exists, then use the `read_file` tool to read the file content. Don't modify blindly!
   - When generating files, first use `list_files` tool to read the directory structure, don't generate blindly!
   - When creating files, first check if the directory exists. If it doesn't exist, create the directory before creating the file.
+  - After `web_search`, if you don't get detailed enough information, do not continue use `web_search`, just continue using the `fetch` tool to get more information you need from the links in the search results.
 
 {% if system_info -%}
 Use the appropriate shell based on the user's system info: