package main

import (
    "bufio"
    "fmt"
    "net"

    "../utils"
    "github.com/gizak/termui"
)

func main() {

    // connect to this socket
    conn, _ := net.Dial("tcp", "localhost:8000")
    messages := &utils.MsgList{nil, nil, 0}
    text := ""
    err := termui.Init()
    if err != nil {
        panic(err)
    }
    defer termui.Close()
    par0 := termui.NewPar(">")
    par0.Height = 1
    par0.Border = false

    ls := termui.NewList()
    ls.Items = messages.MessageArr()
    ls.Overflow = "wrap"
    ls.ItemFgColor = termui.ColorYellow
    ls.Height = 22

    termui.Body.AddRows(
        termui.NewRow(termui.NewCol(12, 0, ls)),
        termui.NewRow(termui.NewCol(12, 0, par0)))
    termui.Body.Align()
    termui.Render(termui.Body)
    termui.Handle("/sys/kbd", func(e termui.Event) {
        text += e.Data.(termui.EvtKbd).KeyStr
        par0.Text = ">" + text
        termui.Render(termui.Body)
    })

    termui.Handle("/sys/kbd/<enter>", func(e termui.Event) {
        fmt.Fprintf(conn, text+"\n")
        text = ""
        par0.Text = ">" + text
        termui.Render(termui.Body)
    })

    termui.Handle("/sys/kbd/<backspace>", func(e termui.Event) {
        sz := len(text)

        if sz > 0 {
            text = text[:sz-1]
            par0.Text = ">" + text
            termui.Render(termui.Body)
        }
    })

    termui.Handle("/sys/kbd/<space>", func(e termui.Event) {
        text += " "
        par0.Text = ">" + text
        termui.Render(termui.Body)
    })

    termui.Handle("/sys/kbd/C-c", func(termui.Event) {
        termui.StopLoop()
    })

    termui.Handle("/sys/wnd/resize", func(e termui.Event) {
        termui.Body.Width = termui.TermWidth()
        termui.Body.Align()
        termui.Clear()
        termui.Render(termui.Body)
    })

    go func() {
        for {
            // listen for reply
            message, _ := bufio.NewReader(conn).ReadString('\n')
            size := len(message)
            messages.Append(message[:size-1])
            if messages.Size > 20 {
                messages.DeleteHead()
            }
            ls.Items = messages.MessageArr()
            termui.Render(termui.Body)
        }
    }()
    termui.Loop()
}