--[[
    @object-name: nginx
    @object-desc: nginx 配置
--]]


local utils = require "oui.utils"
local uci = require "uci"

local M = {}

local CONF = "/etc/nginx/conf.d/gl.conf"

local function match_port(l)
    local port = l:match("listen%s+(%d+);$")
    if port then
        return tonumber(port), false
    end

    port = l:match("listen%s+(%d+)%s+ssl;$")
    if port then
        return tonumber(port), true
    end
end

--[[
    @method-type: call
    @method-name: get_config
    @method-desc: 获取配置

    @out bool redirect_https    是否重定向 http 到 https
    @out number http_port       HTTP 端口
    @out number https_port      HTTPS 端口

    @in-example: {"jsonrpc":"2.0","id":1,"method":"call","params":["","nginx","get_config",{}]}
    @out-example: {"jsonrpc": "2.0", "id": 1, "result": { "redirect_https": false, "http_port": 80, "https_port": 443 }}
--]]
function M.get_config()
    local c = uci.cursor()
    local redirect_https = c:get("oui-httpd", "main", "redirect_https") == "1"
    local http_port
    local https_port

    for l in io.lines(CONF) do
        local port, ssl = match_port(l)
        if port then
            if ssl then
                https_port = port
            else
                http_port = port
            end
        end

        if http_port and https_port then break end
    end

    return {
        redirect_https = redirect_https,
        http_port = tonumber(http_port),
        https_port = tonumber(https_port)
    }
end

--[[
    @method-type: call
    @method-name: set_config
    @method-desc: 配置

    @in bool    ?redirect_https=false   是否重定向 http 到 https
    @in number  ?http_port=80           HTTP 端口
    @in number  ?https_port=443         HTTPS 端口

    @in-example: {"jsonrpc":"2.0","id":1,"method":"call","params":["","nginx","set_config",{"redirect_https": false, "http_port": 80, "https_port": 443}]}
    @out-example: {"jsonrpc": "2.0", "id": 1, "result": null}
--]]
function M.set_config(params)
    local c = uci.cursor()
    local redirect_https = params.redirect_https and 1 or 0
    local http_port = params.http_port or 80
    local https_port = params.https_port or 443

    local content = {}

    for l in io.lines(CONF) do
        if l:match("listen %d+;$") or l:match("listen %[::%]:%d+;$") then
            content[#content + 1] = l:gsub("%d+", http_port)
        elseif l:match("listen %d+%s+ssl;$") or l:match("listen %[::%]:%d+%s+ssl;$") then
            content[#content + 1] = l:gsub("%d+", https_port)
        else
            content[#content + 1] = l
        end
    end

    content[#content + 1] = ""

    utils.writefile(CONF, table.concat(content, "\n"))

    c:set("oui-httpd", "main", "redirect_https", redirect_https)

    c:set("firewall", "glservice_rule", "dest_port", http_port)
    c:set("firewall", "glservice_https", "dest_port", https_port)
    c:set("gl_ddns", "ddns", "http_port", http_port)
    c:set("gl_ddns", "ddns", "https_port", https_port)

    c:commit("firewall")
    c:commit("gl_ddns")

    local ddns_enabled = c:get("ddns", "glddns", "enabled")
    if ddns_enabled == "1" then
        ngx.timer.at(1,function()
            os.execute("/etc/init.d/firewall reload 2>/dev/null")
        end)
    end

    c:commit("oui-httpd")

    ngx.timer.at(1,function()
        os.execute("nginx -s reload 2>/dev/null")
    end)
end

return M