local function post_to_n8n(endpoint, json)
  local http = require("http")
  local client = http.client()
  local request = http.request("POST", endpoint, json)
  request:header_set("Content-Type", "application/json")
  local result, err = client:do_request(request)
  if err then
    log_print("post_to_n8n error: " .. err)
    error(err)
  end
end

-- files_table should have the form:
-- {
-- fieldname = "file",
--  path = "./test/data/test.txt"
-- }
local function post_file_to_n8n(endpoint, files_table, form_fields_table)
  local http = require("http")
  local client = http.client()
  local file_request = http.file_request(endpoint, files_table)
  -- file_request:header_set("Content-Type", "application/json")
  local result, err = client:do_request(file_request)
  if err then
    log_print("post_file_to_n8n error: " .. err)
    error(err)
  end
  if result then
    log_print("post_file_to_n8n result Code: " .. result.code .. " Body: " .. result.body)
  end
end

-- This ends up being a POST form-encoded request will = "to_win" is a form field value
post_file_to_n8n(
  "https://endpoint.sample", { {
    fieldname = "file1", path = "/Users/rodo/trabajo/rodley/botbunny/bot-bunny-go/Icon.png" 
  }, { fieldname = "file2", path = "/Users/rodo/trabajo/rodley/botbunny/bot-bunny-go/cmd/cli/bf467f02-fa3a-4b67-981a-eaa39c56332f.pdf", filename = "custom-b.pdf" }  },
  { will = "to_win" }
)