-- Copyright © by Jeff Foley 2017-2023. All rights reserved.
-- Use of this source code is governed by Apache 2 LICENSE that can be found in the LICENSE file.
-- SPDX-License-Identifier: Apache-2.0

local url = require("url")
local json = require("json")

name = "Baidu"
type = "scrape"

function start()
    set_rate_limit(1)
end

function vertical(ctx, domain)
    for i=0,10 do
        local ok = scrape(ctx, {['url']=build_url(domain, i)})
        if not ok then
            break
        end
    end
end

function build_url(domain, pagenum)
    local query = "site:" .. domain .. " -site:www." .. domain
    local params = {
        ['wd']=query,
        ['oq']=query,
        ['pn']=pagenum,
    }

    return "https://www.baidu.com/s?" .. url.build_query_string(params)
end