439 lines
10 KiB
Go
439 lines
10 KiB
Go
package main
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import (
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"encoding/json"
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"fmt"
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"os"
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"reflect"
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"strings"
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"tildegit.org/sloum/swim/termios"
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"time"
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)
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const (
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swimLogo string = "\033[7m ｓｗｉｍ ▟\033[27m "
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cursorHome string = "\033[0;0H"
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styleOff string = "\033[0m"
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upAndLeft string = "\033[1A\033[500D"
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cursorEnd string = "\033[500;500H"
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)
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type Board struct {
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Title string `json:"BoardTitle"`
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Lanes []Lane `json:"Lanes"`
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Current int `json:"CurrentLane"` // Index of current lane
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laneOff int
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message string
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msgErr bool
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width int
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height int
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Zoom int `json:"Zoom"`
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StoryOpen bool
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}
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func (b *Board) PollForTermSize() {
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for {
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var w, h = termios.GetWindowSize()
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if h != b.height || w != b.width {
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b.height = h
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b.width = w
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if b.StoryOpen {
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b.Lanes[b.Current].Stories[b.Lanes[b.Current].Current].offset = 0
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b.Lanes[b.Current].Stories[b.Lanes[b.Current].Current].Draw(b)
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} else {
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b.Draw()
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}
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}
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time.Sleep(500 * time.Millisecond)
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}
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}
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func (b *Board) Run() {
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defer termios.Restore()
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termios.SetCharMode()
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fmt.Print("\033[?25l")
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go b.PollForTermSize()
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var ch rune
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for {
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b.Draw()
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ch = Getch()
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switch ch {
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case 'Q':
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Quit()
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case 'N':
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b.CreateLane()
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case 'n':
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b.CreateStory()
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case '\n':
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b.StoryOpen = true
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b.ViewStory()
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b.StoryOpen = false
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case 'h', 'j', 'k', 'l', 'H', 'L', 'K', 'J':
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b.ClearMessage()
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b.Move(ch)
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case 'D':
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// Delete current story
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case ':':
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b.EnterCommand()
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case '+':
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b.ZoomIn()
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case '-':
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b.ZoomOut()
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default:
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b.SetMessage(fmt.Sprintf("There is no action bound to '%c'", ch), true)
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}
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}
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}
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func (b *Board) ClearMessage() {
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b.message = ""
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b.msgErr = false
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}
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func (b *Board) SetMessage(msg string, isError bool) {
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b.message = msg
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b.msgErr = isError
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}
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func (b *Board) CreateLane() {
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laneTitle, err := GetAndConfirmCommandLine("Lane Title: ")
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if err != nil {
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b.SetMessage(err.Error(), true)
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return
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}
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b.Lanes = append(b.Lanes, MakeLane(laneTitle))
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if b.Current < 0 {
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b.Current = 0
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}
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b.SetMessage("Lane created", false)
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}
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func (b *Board) CreateStory() {
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if b.Current < 0 {
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b.SetMessage("You must create a lane first", true)
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return
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}
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b.Lanes[b.Current].CreateStory(b)
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b.SetMessage("Story created", false)
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}
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func (b Board) PrintHeader() string {
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return fmt.Sprintf("%s%s%-*.*s%s\n", style.Header, swimLogo, b.width-12, b.width-12, b.Title, styleOff)
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}
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func (b Board) PrintInputArea() string {
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return fmt.Sprintf("%s%-*.*s%s\n", style.Input, b.width, b.width, " ", styleOff)
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}
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func (b Board) GetLaneSlices(width int) [][]string {
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laneText := make([][]string, b.Zoom)
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for i := b.laneOff; i < b.laneOff + b.Zoom; i++ {
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var s []string
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if i < len(b.Lanes) {
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s = b.Lanes[i].StringSlice(width, i == b.Current)
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} else {
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s = make([]string, 0)
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}
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laneText[i-b.laneOff] = s
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}
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return laneText
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}
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func (b Board) LaneHeaderRow(width, pad int) string {
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var out strings.Builder
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for i := b.laneOff; i < b.laneOff + b.Zoom; i++ {
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if i < len(b.Lanes) {
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out.WriteString(b.Lanes[i].Header(width, i == b.Current))
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} else {
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out.WriteString(fmt.Sprintf("%s%*.*s%s", style.Lane, width, width, " ", styleOff))
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}
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}
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if pad > 0 {
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out.WriteString(fmt.Sprintf("%s%*.*s%s", style.Lane, pad, pad, " ", styleOff))
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}
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out.WriteRune('\n')
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return out.String()
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}
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func (b Board) PrintLanes() string {
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var out strings.Builder
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laneWidth := b.width / b.Zoom
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laneSlices := b.GetLaneSlices(laneWidth)
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pad := b.width - laneWidth * b.Zoom
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out.WriteString(b.LaneHeaderRow(laneWidth, pad))
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for row := 0; row < b.height - 4; row++ {
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for _, l := range laneSlices {
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if row < len(l) {
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out.WriteString(l[row])
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} else {
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out.WriteString(fmt.Sprintf("%s%*.*s%s", style.Lane, laneWidth, laneWidth, " ", styleOff))
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}
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}
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if pad > 0 {
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out.WriteString(fmt.Sprintf("%s%*.*s%s", style.Lane, pad, pad, " ", styleOff))
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}
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out.WriteRune('\n')
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}
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out.WriteString(styleOff)
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return out.String()
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}
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func (b *Board) EnterCommand() {
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command, err := GetCommandLine(":")
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if err != nil {
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b.SetMessage(err.Error(), true)
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}
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if command == "" {
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return
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}
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f := strings.Fields(command)
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mainCom := strings.ToLower(f[0])
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switch mainCom {
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case "write", "wq", "w":
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b.Write(f)
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if mainCom == "wq" {
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Quit()
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}
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case "q", "quit":
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Quit()
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case "set", "s":
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if len(f) > 2 {
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target := strings.ToLower(f[1])
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switch target {
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case "board", "b", "bo", "boa", "boar":
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b.Update(f[2:])
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case "lane", "l", "la", "lan":
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b.Lanes[b.Current].Update(f[2:], b)
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case "story", "s", "st", "sto", "stor":
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b.Lanes[b.Current].Stories[b.Lanes[b.Current].Current].Update(f[2:], b)
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default:
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b.SetMessage(fmt.Sprintf("Unknown target %q", f[1]), true)
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}
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} else {
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b.SetMessage("More info needed: 'update [target] [location]'", true)
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}
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case "user", "toggle", "t", "u":
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b.Lanes[b.Current].Stories[b.Lanes[b.Current].Current].Update(f, b)
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default:
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b.SetMessage(fmt.Sprintf("Unknown command %q", f[0]), true)
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}
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}
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func (b *Board) Update(args []string) {
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location := strings.ToLower(args[0])
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switch location {
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case "title", "t", "name", "n":
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title, err := GetAndConfirmCommandLine("New board title: ")
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if err != nil {
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b.SetMessage(err.Error(), true)
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break
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}
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b.Title = title
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b.SetMessage("Board title updated", false)
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}
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}
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func (b Board) PrintMessage() string {
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var out strings.Builder
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if b.msgErr {
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out.WriteString(style.MessageErr)
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} else {
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out.WriteString(style.Message)
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}
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msg := b.message
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if len(msg) > b.width {
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msg = msg[:b.width] + "…"
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}
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out.WriteString(fmt.Sprintf("%-*s%s", b.width, msg, styleOff))
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return out.String()
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}
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func (b *Board) ZoomIn() {
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if b.Zoom > 1 {
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b.Zoom -= 1
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if b.Current + 1 > b.laneOff + b.Zoom {
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b.laneOff += 1
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}
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}
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}
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func (b *Board) ZoomOut() {
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if b.width / (b.Zoom+1) > 15 {
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b.Zoom += 1
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if len(b.Lanes) < b.laneOff + b.Zoom {
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b.laneOff -= 1
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if b.laneOff < 0 {
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b.laneOff = 0
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}
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}
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}
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}
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func (b *Board) Move(ch rune) {
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if len(b.Lanes) == 0 {
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return
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}
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switch ch {
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case 'h':
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// move left a lane
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if b.Current > 0 {
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b.Current -= 1
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if b.Current < b.laneOff {
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b.laneOff -= 1
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}
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} else {
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b.SetMessage("Cannot move further left", true)
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}
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case 'l':
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// move selection right a lane
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if b.Current < len(b.Lanes)-1 {
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b.Current += 1
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if b.Current > b.laneOff + b.Zoom - 1 {
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b.laneOff += 1
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}
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} else {
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b.SetMessage("Cannot move further right", true)
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}
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case 'j':
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// move selection down a story
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if b.Lanes[b.Current].Current < len(b.Lanes[b.Current].Stories)-1 {
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b.Lanes[b.Current].Current += 1
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if b.Lanes[b.Current].Current * 2 + 1 > b.height-5 {
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b.Lanes[b.Current].storyOff += 1
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}
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} else {
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b.SetMessage("Cannot move further down", true)
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}
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case 'k':
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// move selection up a story
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if b.Lanes[b.Current].Current > 0 {
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b.Lanes[b.Current].Current -= 1
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if b.Lanes[b.Current].Current < b.Lanes[b.Current].storyOff {
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b.Lanes[b.Current].storyOff -= 1
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}
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} else {
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b.SetMessage("Cannot move further up", true)
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}
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case 'H':
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// move story left a lane
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if b.Current == 0 {
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b.SetMessage("Cannot move story left", true)
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break
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}
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storyIndex := b.Lanes[b.Current].Current
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if len(b.Lanes[b.Current].Stories) <= 0 {
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goto MoveLeft
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}
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b.Lanes[b.Current-1].Stories = append(b.Lanes[b.Current-1].Stories, b.Lanes[b.Current].Stories[storyIndex].Duplicate())
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if storyIndex == len(b.Lanes[b.Current].Stories)-1 {
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b.Lanes[b.Current].Stories = b.Lanes[b.Current].Stories[:len(b.Lanes[b.Current].Stories)-1]
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b.Lanes[b.Current].Current -= 1
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} else {
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b.Lanes[b.Current].Stories[storyIndex] = b.Lanes[b.Current].Stories[len(b.Lanes[b.Current].Stories)-1]
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b.Lanes[b.Current].Stories = b.Lanes[b.Current].Stories[:len(b.Lanes[b.Current].Stories)-1]
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}
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b.Lanes[b.Current-1].Current = len(b.Lanes[b.Current-1].Stories)-1
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MoveLeft: b.Move('h')
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case 'L':
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// move story right a lane
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if b.Current == len(b.Lanes)-1 {
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b.SetMessage("Cannot move story right", true)
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break
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}
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storyIndex := b.Lanes[b.Current].Current
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if len(b.Lanes[b.Current].Stories) <= 0 {
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goto MoveRight
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}
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b.Lanes[b.Current+1].Stories = append(b.Lanes[b.Current+1].Stories, b.Lanes[b.Current].Stories[storyIndex].Duplicate())
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if storyIndex == len(b.Lanes[b.Current].Stories)-1 {
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b.Lanes[b.Current].Stories = b.Lanes[b.Current].Stories[:len(b.Lanes[b.Current].Stories)-1]
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b.Lanes[b.Current].Current -= 1
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} else {
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b.Lanes[b.Current].Stories[storyIndex] = b.Lanes[b.Current].Stories[len(b.Lanes[b.Current].Stories)-1]
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b.Lanes[b.Current].Stories = b.Lanes[b.Current].Stories[:len(b.Lanes[b.Current].Stories)-1]
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}
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b.Lanes[b.Current+1].Current = len(b.Lanes[b.Current+1].Stories)-1
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MoveRight: b.Move('l')
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case 'K':
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// moves story up
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storyIndex := b.Lanes[b.Current].Current
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if storyIndex <= 0 {
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b.SetMessage("Cannot move story up", true)
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break
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}
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swapper := reflect.Swapper(b.Lanes[b.Current].Stories)
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swapper(storyIndex, storyIndex-1)
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b.Move('k')
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case 'J':
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// moves story down
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storyIndex := b.Lanes[b.Current].Current
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if storyIndex > len(b.Lanes[b.Current].Stories)-2 {
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b.SetMessage("Cannot move story down", true)
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break
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}
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swapper := reflect.Swapper(b.Lanes[b.Current].Stories)
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swapper(storyIndex, storyIndex+1)
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b.Move('j')
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}
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}
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func (b *Board) ViewStory() {
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if b.Current > -1 {
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if b.Lanes[b.Current].Current > -1 {
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b.Lanes[b.Current].Stories[b.Lanes[b.Current].Current].View(b)
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}
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} else {
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b.SetMessage("There is no story to view", true)
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}
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}
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func (b Board) Draw() {
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var out strings.Builder
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out.WriteString(cursorHome)
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out.WriteString(b.PrintHeader())
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out.WriteString(b.PrintLanes())
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out.WriteString(b.PrintInputArea())
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out.WriteString(b.PrintMessage())
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fmt.Print(out.String())
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}
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func (b *Board) Write(com []string) {
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j, err := json.Marshal(b)
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if err != nil {
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b.SetMessage(err.Error(), true)
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return
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}
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var path string
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if len(com) < 2 && fp == "" {
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b.SetMessage("No path was provided for file write", true)
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return
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} else if len(com) < 2 {
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path = fp
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} else {
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path = ExpandedAbsFilepath(strings.Join(com[1:], " "))
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}
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var perms os.FileMode = 0664
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fstats, err := os.Stat(path)
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if err == nil {
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perms = fstats.Mode()
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}
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f, err := os.OpenFile(path, os.O_CREATE|os.O_TRUNC|os.O_WRONLY, perms)
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if err != nil {
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b.SetMessage(err.Error(), true)
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return
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}
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fp = path
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defer f.Close()
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f.Write(j)
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b.SetMessage("File written", false)
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}
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