local M = {}

local output_fields = {"http_code", "time_total"}

function M.get_current_line()
    return vim.api.nvim_get_current_line()
end

function M.parse_line(line)
    local method, url = line:match"^%s*(%S+)%s+(.+)"
    return method, url
end

function M.execute(method, url, fields)
    local outFormat = "\\n--metadata--\\n"
    for _, field in pairs(fields) do
        outFormat = outFormat .. field .. ":%{" .. field .. "}\\n"
    end
    local result = vim.system({"curl", url, "-X", method, "-w", outFormat}, {
        text = true,
      }):wait()
    return result
end

function M.parse_output(response, fields)
    local body, metadata = response:match"(.-)%s*\n%-%-metadata%-%-\n(.*)"
    local result = {
        body = body or ""
    }

    for _, field in pairs(fields) do
        local value = metadata:match(field .. ":([^\n]*)")
        if value then
            result[field] = value
        end
    end

    return result
end

function M.run_http_under_cursor()
    local line = M.get_current_line()
    vim.notify("Current line: " .. line, vim.log.levels.TRACE)
    local method, url = M.parse_line(line)
    vim.notify("Parsed - Method/Command: " .. tostring(method) .. ", URL/Args: " .. tostring(url), vim.log.levels.TRACE)
    local response = M.execute(method, url, output_fields)
    vim.notify("Response: " .. response.stdout, vim.log.levels.TRACE)
    local result = M.parse_output(response.stdout, output_fields)
    return result
end

return M