-- 指定模块引用目录，否则无法加载同目录下的其他文件
--package.path = package.path .. ';/usr/local/opt/openresty/nginx/scripts/?.lua';
package.path = package.path .. ';<SCRIPT_PATH>/?.lua';

local url_parser = require "net.url"

local _M = {}

function _M.host(s)
    return (s.."/"):match("://(.-)/")
end

function _M.upt(url)
    local uri = url_parser.parse(url)
    local hostname = uri.host
    local pathname = uri.path
    ngx.log(ngx.INFO, 'hostname...' .. hostname .. ' path...' .. pathname)
    local secret;
    if string.find(hostname, "moicen.com") then
        ngx.log(ngx.INFO, 'match moicen.com: ' .. ngx.var.upt_moicen_secret)
        secret = ngx.var.upt_moicen_secret
    elseif string.find(hostname, "alchemy-studio.cn", 1, true) then
        ngx.log(ngx.INFO, 'match alchemy: ' .. ngx.var.upt_alchemy_secret)
        secret = ngx.var.upt_alchemy_secret
    elseif string.find(hostname, "huiwings.cn") then
        ngx.log(ngx.INFO, 'match huiwings.cn: ' .. ngx.var.upt_huiwings_secret)
        secret = ngx.var.upt_huiwings_secret
    else
        ngx.status = 401
        ngx.log(ngx.ERR, "Reject URL -> ", hostname)
        ngx.exit(ngx.status)
    end

    ngx.log(ngx.INFO, 'secret...' .. secret)
    local duration = ngx.var.upt_duration
    local etime = os.time() + duration
    local sign = ngx.md5(secret .. '&' .. etime .. '&' .. pathname)
    ngx.log(ngx.INFO, 'sign...' .. sign .. ' etime..' .. etime)
    local upt = string.sub(sign, 13, 13 + 7) .. etime
    ngx.log(ngx.INFO, 'upt...' .. upt)
    return (upt)
end

return _M