help command

1 files changed, 75 insertions, 0 deletions

diff --git a/client/help.go b/client/help.go
new file mode 100644
index 0000000..55509b4
--- /dev/null
+++ b/client/help.go
@@ -0,0 +1,75 @@
+package main
+
+import (
+	"citrons.xyz/talk/tui"
+	"strconv"
+)
+
+type helpText struct {
+	command string
+	usage string
+	description string
+}
+var helpTexts = []helpText {
+	helpText {"help", "[command]", "view/list command descriptions"},
+	helpText {"nick", "<name>", "change your username"},
+	helpText {"join", "<name>", "join the channel with this name"},
+	helpText {"leave", "", "leave the currently shown channel"},
+	helpText {"create", "<name>", "create a channel with this name"},
+	helpText {"quit", "", "exit the application"},
+}
+
+type helpMsg struct {
+	index int
+	help []helpText
+}
+
+func (h helpMsg) Id() string {
+	return "help." + strconv.Itoa(h.index)
+}
+
+func (h helpMsg) Show(odd bool) {
+	style := &tui.Style {Bg: colorCmd[odd], Fg: tui.White}
+	tui.Push("", tui.Box {
+		Width: tui.Fill, Height: tui.Children, Style: style, Dir: tui.Right,
+	})
+
+	tui.Push("", tui.Box {Width: tui.TextSize, Height: tui.TextSize})
+	tui.Text("* ", nil)
+	tui.Pop()
+
+	tui.Push("", tui.Box {Width: tui.Fill, Height: tui.Children})
+	for _, h := range h.help {
+		tui.Push("", tui.Box {Width: tui.Fill, Height: tui.TextSize})
+		tui.Text("/", nil)
+		tui.Text(h.command, nil)
+		tui.Text(" ", nil)
+		tui.Text(h.usage, nil)
+		tui.Pop()
+
+		tui.Push("", tui.Box {
+			Width: tui.Fill, Height: tui.TextSize,
+			Margins: [4]int {2, 0, 0, 0},
+		})
+		tui.Text(h.description, nil)
+		tui.Pop()
+	}
+	tui.Pop()
+
+	tui.Pop()
+}
+
+
+func getHelp(command string) (helpMsg, bool) {
+	lastIndex++
+	if command == "" {
+		return helpMsg {lastIndex, helpTexts}, true
+	} else {
+		for _, h := range helpTexts {
+			if h.command == command {
+				return helpMsg {lastIndex, []helpText {h}}, true
+			}
+		}
+	}
+	return helpMsg{}, false
+}