feat(client): support vim.g.copilot_proxy

Author: MunifTanjim

lua/copilot/api.lua

@@ -30,7 +30,8 @@ end
 
 ---@alias copilot_editor_info { name: string, version: string }
 ---@alias copilot_editor_plugin_info { name: string, version: string }
----@alias copilot_set_editor_info_params { editorInfo: copilot_editor_info, editorPluginInfo: copilot_editor_plugin_info, editorConfiguration: copilot_editor_configuration  }
+---@alias copilot_network_proxy { host: string, port: integer, username?: string, password?: string }
+---@alias copilot_set_editor_info_params { editorInfo: copilot_editor_info, editorPluginInfo: copilot_editor_plugin_info, editorConfiguration: copilot_editor_configuration, networkProxy?: copilot_network_proxy }
 
 ---@param params copilot_set_editor_info_params
 function mod.set_editor_info(client, params)

lua/copilot/client.lua

@@ -58,6 +58,7 @@ M.merge_server_opts = function(params)
         local set_editor_info_params = util.get_editor_info()
         set_editor_info_params.editorInfo.version = set_editor_info_params.editorInfo.version .. ' + Node.js ' .. M.get_node_version()
         set_editor_info_params.editorConfiguration = util.get_editor_configuration()
+        set_editor_info_params.networkProxy = util.get_network_proxy()
         api.set_editor_info(client, set_editor_info_params)
       end)
       vim.schedule(M.buf_attach_copilot)

lua/copilot/util.lua

@@ -1,5 +1,7 @@
 local config = require("copilot.config")
 
+local unpack = unpack or table.unpack
+
 local M = {}
 
 local id = 0
@@ -230,6 +232,45 @@ function M.get_editor_configuration()
   }
 end
 
+---@param str string
+local function url_decode(str)
+  return vim.fn.substitute(str, [[%\(\x\x\)]], [[\=iconv(nr2char("0x".submatch(1)), "utf-8", "latin1")]], "g")
+end
+
+---@return copilot_network_proxy|nil
+function M.get_network_proxy()
+  local proxy_uri = vim.g.copilot_proxy
+
+  if type(proxy_uri) ~= "string" then
+    return
+  end
+
+  proxy_uri = string.gsub(proxy_uri, "^[^:]+://", "")
+
+  ---@type string|nil, string|nil
+  local user_pass, host_port = unpack(vim.split(proxy_uri, "@", { plain = true, trimempty = true }))
+
+  if not host_port then
+    host_port = user_pass --[[@as string]]
+    user_pass = nil
+  end
+
+  local host, port = unpack(vim.split(host_port, ":", { plain = true, trimempty = true }))
+  local username, password
+
+  if user_pass then
+    username, password = unpack(vim.split(user_pass, ":", { plain = true, trimempty = true }))
+    username, password = username and url_decode(username), password and url_decode(password)
+  end
+
+  return {
+    host = host,
+    port = tonumber(port or 80),
+    username = username,
+    password = password,
+  }
+end
+
 M.get_copilot_path = function()
   local copilot_path = vim.api.nvim_get_runtime_file('copilot/index.js', false)[1]
   if vim.fn.filereadable(copilot_path) ~= 0 then