/
main.go
275 lines (234 loc) · 6.53 KB
/
main.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
package main
// An example demonstrating an application with multiple views.
//
// Note that this example was produced before the Bubbles progress component
// was available (github.com/charmbracelet/bubbles/progress) and thus, we're
// implementing a progress bar from scratch here.
import (
"fmt"
"math"
"strconv"
"strings"
"time"
tea "github.com/charmbracelet/bubbletea"
"github.com/charmbracelet/lipgloss"
"github.com/fogleman/ease"
"github.com/lucasb-eyer/go-colorful"
)
const (
progressBarWidth = 71
progressFullChar = "█"
progressEmptyChar = "░"
dotChar = " • "
)
// General stuff for styling the view
var (
keywordStyle = lipgloss.NewStyle().Foreground(lipgloss.Color("211"))
subtleStyle = lipgloss.NewStyle().Foreground(lipgloss.Color("241"))
ticksStyle = lipgloss.NewStyle().Foreground(lipgloss.Color("79"))
checkboxStyle = lipgloss.NewStyle().Foreground(lipgloss.Color("212"))
progressEmpty = subtleStyle.Render(progressEmptyChar)
dotStyle = lipgloss.NewStyle().Foreground(lipgloss.Color("236")).Render(dotChar)
mainStyle = lipgloss.NewStyle().MarginLeft(2)
// Gradient colors we'll use for the progress bar
ramp = makeRampStyles("#B14FFF", "#00FFA3", progressBarWidth)
)
func main() {
initialModel := model{0, false, 10, 0, 0, false, false}
p := tea.NewProgram(initialModel)
if _, err := p.Run(); err != nil {
fmt.Println("could not start program:", err)
}
}
type (
tickMsg struct{}
frameMsg struct{}
)
func tick() tea.Cmd {
return tea.Tick(time.Second, func(time.Time) tea.Msg {
return tickMsg{}
})
}
func frame() tea.Cmd {
return tea.Tick(time.Second/60, func(time.Time) tea.Msg {
return frameMsg{}
})
}
type model struct {
Choice int
Chosen bool
Ticks int
Frames int
Progress float64
Loaded bool
Quitting bool
}
func (m model) Init() tea.Cmd {
return tick()
}
// Main update function.
func (m model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
// Make sure these keys always quit
if msg, ok := msg.(tea.KeyMsg); ok {
k := msg.String()
if k == "q" || k == "esc" || k == "ctrl+c" {
m.Quitting = true
return m, tea.Quit
}
}
// Hand off the message and model to the appropriate update function for the
// appropriate view based on the current state.
if !m.Chosen {
return updateChoices(msg, m)
}
return updateChosen(msg, m)
}
// The main view, which just calls the appropriate sub-view
func (m model) View() string {
var s string
if m.Quitting {
return "\n See you later!\n\n"
}
if !m.Chosen {
s = choicesView(m)
} else {
s = chosenView(m)
}
return mainStyle.Render("\n" + s + "\n\n")
}
// Sub-update functions
// Update loop for the first view where you're choosing a task.
func updateChoices(msg tea.Msg, m model) (tea.Model, tea.Cmd) {
switch msg := msg.(type) {
case tea.KeyMsg:
switch msg.String() {
case "j", "down":
m.Choice++
if m.Choice > 3 {
m.Choice = 3
}
case "k", "up":
m.Choice--
if m.Choice < 0 {
m.Choice = 0
}
case "enter":
m.Chosen = true
return m, frame()
}
case tickMsg:
if m.Ticks == 0 {
m.Quitting = true
return m, tea.Quit
}
m.Ticks--
return m, tick()
}
return m, nil
}
// Update loop for the second view after a choice has been made
func updateChosen(msg tea.Msg, m model) (tea.Model, tea.Cmd) {
switch msg.(type) {
case frameMsg:
if !m.Loaded {
m.Frames++
m.Progress = ease.OutBounce(float64(m.Frames) / float64(100))
if m.Progress >= 1 {
m.Progress = 1
m.Loaded = true
m.Ticks = 3
return m, tick()
}
return m, frame()
}
case tickMsg:
if m.Loaded {
if m.Ticks == 0 {
m.Quitting = true
return m, tea.Quit
}
m.Ticks--
return m, tick()
}
}
return m, nil
}
// Sub-views
// The first view, where you're choosing a task
func choicesView(m model) string {
c := m.Choice
tpl := "What to do today?\n\n"
tpl += "%s\n\n"
tpl += "Program quits in %s seconds\n\n"
tpl += subtleStyle.Render("j/k, up/down: select") + dotStyle +
subtleStyle.Render("enter: choose") + dotStyle +
subtleStyle.Render("q, esc: quit")
choices := fmt.Sprintf(
"%s\n%s\n%s\n%s",
checkbox("Plant carrots", c == 0),
checkbox("Go to the market", c == 1),
checkbox("Read something", c == 2),
checkbox("See friends", c == 3),
)
return fmt.Sprintf(tpl, choices, ticksStyle.Render(strconv.Itoa(m.Ticks)))
}
// The second view, after a task has been chosen
func chosenView(m model) string {
var msg string
switch m.Choice {
case 0:
msg = fmt.Sprintf("Carrot planting?\n\nCool, we'll need %s and %s...", keywordStyle.Render("libgarden"), keywordStyle.Render("vegeutils"))
case 1:
msg = fmt.Sprintf("A trip to the market?\n\nOkay, then we should install %s and %s...", keywordStyle.Render("marketkit"), keywordStyle.Render("libshopping"))
case 2:
msg = fmt.Sprintf("Reading time?\n\nOkay, cool, then we’ll need a library. Yes, an %s.", keywordStyle.Render("actual library"))
default:
msg = fmt.Sprintf("It’s always good to see friends.\n\nFetching %s and %s...", keywordStyle.Render("social-skills"), keywordStyle.Render("conversationutils"))
}
label := "Downloading..."
if m.Loaded {
label = fmt.Sprintf("Downloaded. Exiting in %s seconds...", ticksStyle.Render(strconv.Itoa(m.Ticks)))
}
return msg + "\n\n" + label + "\n" + progressbar(m.Progress) + "%"
}
func checkbox(label string, checked bool) string {
if checked {
return checkboxStyle.Render("[x] " + label)
}
return fmt.Sprintf("[ ] %s", label)
}
func progressbar(percent float64) string {
w := float64(progressBarWidth)
fullSize := int(math.Round(w * percent))
var fullCells string
for i := 0; i < fullSize; i++ {
fullCells += ramp[i].Render(progressFullChar)
}
emptySize := int(w) - fullSize
emptyCells := strings.Repeat(progressEmpty, emptySize)
return fmt.Sprintf("%s%s %3.0f", fullCells, emptyCells, math.Round(percent*100))
}
// Utils
// Generate a blend of colors.
func makeRampStyles(colorA, colorB string, steps float64) (s []lipgloss.Style) {
cA, _ := colorful.Hex(colorA)
cB, _ := colorful.Hex(colorB)
for i := 0.0; i < steps; i++ {
c := cA.BlendLuv(cB, i/steps)
s = append(s, lipgloss.NewStyle().Foreground(lipgloss.Color(colorToHex(c))))
}
return
}
// Convert a colorful.Color to a hexadecimal format.
func colorToHex(c colorful.Color) string {
return fmt.Sprintf("#%s%s%s", colorFloatToHex(c.R), colorFloatToHex(c.G), colorFloatToHex(c.B))
}
// Helper function for converting colors to hex. Assumes a value between 0 and
// 1.
func colorFloatToHex(f float64) (s string) {
s = strconv.FormatInt(int64(f*255), 16)
if len(s) == 1 {
s = "0" + s
}
return
}