package utils

import (
    "bytes"
    "encoding/json"
    "fmt"
    "io"
    "log"
    "path/filepath"
    "strings"
    "time"
    tgbotapi "github.com/go-telegram-bot-api/telegram-bot-api/v5"
)

var JSON_SETTINGS string = filepath.Join( WORKDIR, "settings.json" )

var settingsTime = time.Unix( 0, 0 )

type SysSettings struct {
    IgnoredChats map[int64] bool `json:"IgnoredChats"`
}

var Settings = SysSettings{ IgnoredChats: map[int64] bool{} }

func rwSettings() {

    buff, err := ChangedStream( JSON_SETTINGS, writeSettings, settingsTime )
    if err != nil {
        log.Panic( err )
        return
    }

    conf := SysSettings{}
    err = json.Unmarshal( buff.Bytes(), &conf )
    if err != nil {
        log.Panic( err )
        return
    }

    Settings = conf
}

func writeSettings() ( io.Reader, error ) {
    b, err := json.Marshal( Settings )
    if err != nil {
        return nil, err
    }
    return bytes.NewBuffer( b ), nil
}

func SystemControl( tgMesg *tgbotapi.Message ) ( string, bool ) {

    rwSettings()

    processed := false
    mesg := ""

    if tgMesg.Text[0] == '/' {
        processed = true
    }

    chatId := tgMesg.Chat.ID

    if Settings.IgnoredChats == nil {
        Settings.IgnoredChats = map[int64] bool{}
    }

    if strings.Contains( tgMesg.Text, "/golifehk disable" ) {
        mesg = fmt.Sprintf( "OK" )
        Settings.IgnoredChats[ chatId ] = true
        processed = true
    }

    if strings.Contains( tgMesg.Text, "/golifehk enable" ) {
        mesg = fmt.Sprintf( "OK" )
        Settings.IgnoredChats[ chatId ] = false
        processed = true
    }

    if processed {
        settingsTime = time.Now()
        rwSettings()
    }

    //// Begin processing settings

    // ignore chats if enabled
    if Settings.IgnoredChats[ chatId ] {
        processed = true
    }

    return mesg, processed
}