mirror of
https://github.com/FluuxIO/go-xmpp.git
synced 2024-11-25 03:52:02 -08:00
329 lines
9.2 KiB
Go
329 lines
9.2 KiB
Go
package main
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import (
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"errors"
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"fmt"
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"github.com/awesome-gocui/gocui"
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"log"
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"strings"
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)
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const (
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// Windows
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chatLogWindow = "clw" // Where (received and sent) messages are logged
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chatInputWindow = "iw" // Where messages are written
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rawInputWindow = "rw" // Where raw stanzas are written
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contactsListWindow = "cl" // Where the contacts list is shown, and contacts are selectable
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menuWindow = "mw" // Where the menu is shown
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// Menu options
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disconnect = "Disconnect"
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askServerForRoster = "Ask server for roster"
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rawMode = "Switch to Send Raw Mode"
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messageMode = "Switch to Send Message Mode"
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contactList = "Contacts list"
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backFromContacts = "<- Go back"
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)
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// To store names of views on top
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type viewsState struct {
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input string // Which input view is on top
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side string // Which side view is on top
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contacts []string // Contacts list
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currentContact string // Contact we are currently messaging
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}
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var (
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// Which window is on top currently on top of the other.
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// This is the init setup
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viewState = viewsState{
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input: chatInputWindow,
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side: menuWindow,
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}
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menuOptions = []string{contactList, rawMode, askServerForRoster, disconnect}
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// Errors
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servConnFail = errors.New("failed to connect to server. Check your configuration ? Exiting")
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)
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func setCurrentViewOnTop(g *gocui.Gui, name string) (*gocui.View, error) {
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if _, err := g.SetCurrentView(name); err != nil {
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return nil, err
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}
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return g.SetViewOnTop(name)
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}
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func layout(g *gocui.Gui) error {
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maxX, maxY := g.Size()
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if v, err := g.SetView(chatLogWindow, maxX/5, 0, maxX-1, 5*maxY/6-1, 0); err != nil {
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if !gocui.IsUnknownView(err) {
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return err
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}
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v.Title = "Chat log"
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v.Wrap = true
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v.Autoscroll = true
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}
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if v, err := g.SetView(contactsListWindow, 0, 0, maxX/5-1, 5*maxY/6-2, 0); err != nil {
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if !gocui.IsUnknownView(err) {
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return err
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}
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v.Title = "Contacts"
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v.Wrap = true
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v.Autoscroll = true
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}
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if v, err := g.SetView(menuWindow, 0, 0, maxX/5-1, 5*maxY/6-2, 0); err != nil {
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if !gocui.IsUnknownView(err) {
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return err
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}
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v.Title = "Menu"
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v.Wrap = true
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v.Autoscroll = true
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fmt.Fprint(v, strings.Join(menuOptions, "\n"))
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if _, err = setCurrentViewOnTop(g, menuWindow); err != nil {
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return err
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}
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}
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if v, err := g.SetView(rawInputWindow, 0, 5*maxY/6-1, maxX/1-1, maxY-1, 0); err != nil {
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if !gocui.IsUnknownView(err) {
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return err
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}
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v.Title = "Write or paste a raw stanza. Press \"Ctrl+E\" to send :"
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v.Editable = true
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v.Wrap = true
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}
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if v, err := g.SetView(chatInputWindow, 0, 5*maxY/6-1, maxX/1-1, maxY-1, 0); err != nil {
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if !gocui.IsUnknownView(err) {
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return err
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}
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v.Title = "Write a message :"
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v.Editable = true
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v.Wrap = true
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if _, err = setCurrentViewOnTop(g, chatInputWindow); err != nil {
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return err
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}
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}
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return nil
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}
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func quit(g *gocui.Gui, v *gocui.View) error {
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return gocui.ErrQuit
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}
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// Sends an input text from the user to the backend while also printing it in the chatlog window.
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// KeyEnter is viewed as "\n" by gocui, so messages should only be one line, whereas raw sending has a different key
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// binding and therefor should work with this too (for multiple lines stanzas)
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func writeInput(g *gocui.Gui, v *gocui.View) error {
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chatLogWindow, _ := g.View(chatLogWindow)
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input := strings.Join(v.ViewBufferLines(), "\n")
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fmt.Fprintln(chatLogWindow, "Me : ", input)
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textChan <- input
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v.Clear()
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v.EditDeleteToStartOfLine()
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return nil
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}
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func setKeyBindings(g *gocui.Gui) {
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// ==========================
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// All views
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if err := g.SetKeybinding("", gocui.KeyCtrlC, gocui.ModNone, quit); err != nil {
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log.Panicln(err)
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}
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// ==========================
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// Chat input
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if err := g.SetKeybinding(chatInputWindow, gocui.KeyEnter, gocui.ModNone, writeInput); err != nil {
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log.Panicln(err)
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}
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if err := g.SetKeybinding(chatInputWindow, gocui.KeyCtrlSpace, gocui.ModNone, nextView); err != nil {
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log.Panicln(err)
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}
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// ==========================
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// Raw input
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if err := g.SetKeybinding(rawInputWindow, gocui.KeyCtrlE, gocui.ModNone, writeInput); err != nil {
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log.Panicln(err)
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}
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if err := g.SetKeybinding(rawInputWindow, gocui.KeyCtrlSpace, gocui.ModNone, nextView); err != nil {
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log.Panicln(err)
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}
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// ==========================
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// Menu
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if err := g.SetKeybinding(menuWindow, gocui.KeyArrowDown, gocui.ModNone, cursorDown); err != nil {
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log.Panicln(err)
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}
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if err := g.SetKeybinding(menuWindow, gocui.KeyArrowUp, gocui.ModNone, cursorUp); err != nil {
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log.Panicln(err)
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}
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if err := g.SetKeybinding(menuWindow, gocui.KeyCtrlSpace, gocui.ModNone, nextView); err != nil {
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log.Panicln(err)
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}
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if err := g.SetKeybinding(menuWindow, gocui.KeyEnter, gocui.ModNone, getLine); err != nil {
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log.Panicln(err)
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}
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// ==========================
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// Contacts list
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if err := g.SetKeybinding(contactsListWindow, gocui.KeyArrowDown, gocui.ModNone, cursorDown); err != nil {
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log.Panicln(err)
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}
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if err := g.SetKeybinding(contactsListWindow, gocui.KeyArrowUp, gocui.ModNone, cursorUp); err != nil {
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log.Panicln(err)
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}
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if err := g.SetKeybinding(contactsListWindow, gocui.KeyEnter, gocui.ModNone, getLine); err != nil {
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log.Panicln(err)
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}
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if err := g.SetKeybinding(contactsListWindow, gocui.KeyCtrlSpace, gocui.ModNone, nextView); err != nil {
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log.Panicln(err)
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}
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}
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// General
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// Used to handle menu selections and navigations
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func getLine(g *gocui.Gui, v *gocui.View) error {
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var l string
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var err error
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_, cy := v.Cursor()
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if l, err = v.Line(cy); err != nil {
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l = ""
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}
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if viewState.side == menuWindow {
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if l == contactList {
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cv, _ := g.View(contactsListWindow)
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viewState.side = contactsListWindow
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g.SetViewOnTop(contactsListWindow)
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g.SetCurrentView(contactsListWindow)
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if len(cv.ViewBufferLines()) == 0 {
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printContactsToWindow(g, viewState.contacts)
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}
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} else if l == disconnect || l == askServerForRoster {
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chlw, _ := g.View(chatLogWindow)
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fmt.Fprintln(chlw, infoFormat+" Not yet implemented !")
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} else if l == rawMode {
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mw, _ := g.View(menuWindow)
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viewState.input = rawInputWindow
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g.SetViewOnTop(rawInputWindow)
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g.SetCurrentView(rawInputWindow)
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menuOptions[1] = messageMode
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v.Clear()
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v.EditDeleteToStartOfLine()
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fmt.Fprintln(mw, strings.Join(menuOptions, "\n"))
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message := "Now sending in raw stanza mode"
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clv, _ := g.View(chatLogWindow)
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fmt.Fprintln(clv, infoFormat+message)
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} else if l == messageMode {
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mw, _ := g.View(menuWindow)
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viewState.input = chatInputWindow
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g.SetViewOnTop(chatInputWindow)
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g.SetCurrentView(chatInputWindow)
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menuOptions[1] = rawMode
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v.Clear()
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v.EditDeleteToStartOfLine()
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fmt.Fprintln(mw, strings.Join(menuOptions, "\n"))
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message := "Now sending in messages mode"
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clv, _ := g.View(chatLogWindow)
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fmt.Fprintln(clv, infoFormat+message)
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}
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} else if viewState.side == contactsListWindow {
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if l == backFromContacts {
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viewState.side = menuWindow
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g.SetViewOnTop(menuWindow)
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g.SetCurrentView(menuWindow)
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} else if l == "" {
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return nil
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} else {
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// Updating the current correspondent, back-end side.
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CorrespChan <- l
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viewState.currentContact = l
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// Showing the selected contact in contacts list
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cl, _ := g.View(contactsListWindow)
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cts := cl.ViewBufferLines()
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cl.Clear()
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printContactsToWindow(g, cts)
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// Showing a message to the user, and switching back to input after the new contact is selected.
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message := "Now sending messages to : " + l + " in a private conversation"
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clv, _ := g.View(chatLogWindow)
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fmt.Fprintln(clv, infoFormat+message)
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g.SetCurrentView(chatInputWindow)
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}
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}
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return nil
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}
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func printContactsToWindow(g *gocui.Gui, contactsList []string) {
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cl, _ := g.View(contactsListWindow)
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for _, c := range contactsList {
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c = strings.ReplaceAll(c, " *", "")
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if c == viewState.currentContact {
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fmt.Fprintf(cl, c+" *\n")
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} else {
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fmt.Fprintf(cl, c+"\n")
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}
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}
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}
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// Changing view between input and "menu/contacts" when pressing the specific key.
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func nextView(g *gocui.Gui, v *gocui.View) error {
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if v == nil || v.Name() == chatInputWindow || v.Name() == rawInputWindow {
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_, err := g.SetCurrentView(viewState.side)
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return err
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} else if v.Name() == menuWindow || v.Name() == contactsListWindow {
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_, err := g.SetCurrentView(viewState.input)
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return err
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}
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// Should not be reached right now
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_, err := g.SetCurrentView(chatInputWindow)
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return err
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}
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func cursorDown(g *gocui.Gui, v *gocui.View) error {
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if v != nil {
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cx, cy := v.Cursor()
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// Avoid going below the list of contacts. Although lines are stored in the view as a slice
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// in the used lib. Therefor, if the number of lines is too big, the cursor will go past the last line since
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// increasing slice capacity is done by doubling it. Last lines will be "nil" and reachable by the cursor
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// in a dynamic context (such as contacts list)
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cv := g.CurrentView()
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h := cv.LinesHeight()
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if cy+1 >= h {
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return nil
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}
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// Lower cursor
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if err := v.SetCursor(cx, cy+1); err != nil {
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ox, oy := v.Origin()
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if err := v.SetOrigin(ox, oy+1); err != nil {
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return err
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}
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}
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}
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return nil
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}
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func cursorUp(g *gocui.Gui, v *gocui.View) error {
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if v != nil {
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ox, oy := v.Origin()
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cx, cy := v.Cursor()
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if err := v.SetCursor(cx, cy-1); err != nil && oy > 0 {
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if err := v.SetOrigin(ox, oy-1); err != nil {
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return err
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}
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}
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}
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return nil
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}
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