1package dialog
2
3import (
4 "fmt"
5 "slices"
6 "strings"
7 "time"
8
9 "charm.land/bubbles/v2/textinput"
10 tea "charm.land/bubbletea/v2"
11 "charm.land/lipgloss/v2"
12 "github.com/charmbracelet/crush/internal/session"
13 "github.com/charmbracelet/crush/internal/ui/list"
14 "github.com/charmbracelet/crush/internal/ui/styles"
15 "github.com/charmbracelet/x/ansi"
16 "github.com/dustin/go-humanize"
17 "github.com/rivo/uniseg"
18 "github.com/sahilm/fuzzy"
19)
20
21// sameFuzzyMatch reports whether two fuzzy.Match values are
22// observably equal. Because Match contains a slice (MatchedIndexes)
23// it is not directly comparable with ==; we compare the scalar
24// fields and then walk the indexes. The dialog list items use this
25// to skip gratuitous version bumps when SetMatch reapplies the same
26// match.
27func sameFuzzyMatch(a, b fuzzy.Match) bool {
28 return a.Str == b.Str &&
29 a.Index == b.Index &&
30 a.Score == b.Score &&
31 slices.Equal(a.MatchedIndexes, b.MatchedIndexes)
32}
33
34// ListItem represents a selectable and searchable item in a dialog list.
35type ListItem interface {
36 list.FilterableItem
37 list.Focusable
38 list.MatchSettable
39
40 // ID returns the unique identifier of the item.
41 ID() string
42}
43
44// SessionItem wraps a [session.Session] to implement the [ListItem] interface.
45type SessionItem struct {
46 *list.Versioned
47 session.Session
48 t *styles.Styles
49 sessionsMode sessionsMode
50 m fuzzy.Match
51 cache map[int]string
52 updateTitleInput textinput.Model
53 focused bool
54}
55
56// Finished implements list.Item. Session items are render-stable
57// outside of explicit SetFocused / SetMatch calls, both of which
58// bump Version() and therefore invalidate the F6 frozen entry.
59func (s *SessionItem) Finished() bool {
60 return true
61}
62
63var _ ListItem = &SessionItem{}
64
65// Filter returns the filterable value of the session.
66func (s *SessionItem) Filter() string {
67 return s.Title
68}
69
70// ID returns the unique identifier of the session.
71func (s *SessionItem) ID() string {
72 return s.Session.ID
73}
74
75// SetMatch sets the fuzzy match for the session item.
76func (s *SessionItem) SetMatch(m fuzzy.Match) {
77 if sameFuzzyMatch(s.m, m) {
78 return
79 }
80 s.cache = nil
81 s.m = m
82 if s.Versioned != nil {
83 s.Bump()
84 }
85}
86
87// InputValue returns the updated title value
88func (s *SessionItem) InputValue() string {
89 return s.updateTitleInput.Value()
90}
91
92// HandleInput forwards input message to the update title input
93func (s *SessionItem) HandleInput(msg tea.Msg) tea.Cmd {
94 var cmd tea.Cmd
95 s.updateTitleInput, cmd = s.updateTitleInput.Update(msg)
96 return cmd
97}
98
99// Cursor returns the cursor of the update title input
100func (s *SessionItem) Cursor() *tea.Cursor {
101 return s.updateTitleInput.Cursor()
102}
103
104// Render returns the string representation of the session item.
105func (s *SessionItem) Render(width int) string {
106 info := humanize.Time(time.Unix(s.UpdatedAt, 0))
107 styles := ListItemStyles{
108 ItemBlurred: s.t.Dialog.NormalItem,
109 ItemFocused: s.t.Dialog.SelectedItem,
110 InfoTextBlurred: s.t.Dialog.Sessions.InfoBlurred,
111 InfoTextFocused: s.t.Dialog.Sessions.InfoFocused,
112 }
113
114 switch s.sessionsMode {
115 case sessionsModeDeleting:
116 styles.ItemBlurred = s.t.Dialog.Sessions.DeletingItemBlurred
117 styles.ItemFocused = s.t.Dialog.Sessions.DeletingItemFocused
118 case sessionsModeUpdating:
119 styles.ItemBlurred = s.t.Dialog.Sessions.RenamingItemBlurred
120 styles.ItemFocused = s.t.Dialog.Sessions.RenamingingItemFocused
121 if s.focused {
122 const cursorPadding = 1
123 inputWidth := max(0, width-styles.ItemFocused.GetHorizontalFrameSize()-cursorPadding)
124 s.updateTitleInput.SetWidth(inputWidth)
125 s.updateTitleInput.Placeholder = ansi.Truncate(s.Title, width, "…")
126 return styles.ItemFocused.Render(s.updateTitleInput.View())
127 }
128 }
129
130 return renderItem(styles, s.Title, info, s.focused, width, s.cache, &s.m)
131}
132
133type ListItemStyles struct {
134 ItemBlurred lipgloss.Style
135 ItemFocused lipgloss.Style
136 InfoTextBlurred lipgloss.Style
137 InfoTextFocused lipgloss.Style
138}
139
140func renderItem(t ListItemStyles, title string, info string, focused bool, width int, cache map[int]string, m *fuzzy.Match) string {
141 if cache == nil {
142 cache = make(map[int]string)
143 }
144
145 cached, ok := cache[width]
146 if ok {
147 return cached
148 }
149
150 style := t.ItemBlurred
151 if focused {
152 style = t.ItemFocused
153 }
154
155 var infoText string
156 var infoWidth int
157 lineWidth := width
158 if len(info) > 0 {
159 infoText = fmt.Sprintf(" %s ", info)
160 if focused {
161 infoText = t.InfoTextFocused.Render(infoText)
162 } else {
163 infoText = t.InfoTextBlurred.Render(infoText)
164 }
165
166 infoWidth = lipgloss.Width(infoText)
167 }
168
169 title = ansi.Truncate(title, max(0, lineWidth-infoWidth), "…")
170 titleWidth := lipgloss.Width(title)
171 gap := strings.Repeat(" ", max(0, lineWidth-titleWidth-infoWidth))
172 content := title
173 if m != nil && len(m.MatchedIndexes) > 0 {
174 var lastPos int
175 parts := make([]string, 0)
176 ranges := matchedRanges(m.MatchedIndexes)
177 for _, rng := range ranges {
178 start, stop := bytePosToVisibleCharPos(title, rng)
179 if start > lastPos {
180 parts = append(parts, ansi.Cut(title, lastPos, start))
181 }
182 // NOTE: We're using [ansi.Style] here instead of [lipglosStyle]
183 // because we can control the underline start and stop more
184 // precisely via [ansi.AttrUnderline] and [ansi.AttrNoUnderline]
185 // which only affect the underline attribute without interfering
186 // with other style attributes.
187 parts = append(
188 parts,
189 ansi.NewStyle().Underline(true).String(),
190 ansi.Cut(title, start, stop+1),
191 ansi.NewStyle().Underline(false).String(),
192 )
193 lastPos = stop + 1
194 }
195 if lastPos < ansi.StringWidth(title) {
196 parts = append(parts, ansi.Cut(title, lastPos, ansi.StringWidth(title)))
197 }
198
199 content = strings.Join(parts, "")
200 }
201
202 content = style.Render(content + gap + infoText)
203 cache[width] = content
204 return content
205}
206
207// SetFocused sets the focus state of the session item.
208func (s *SessionItem) SetFocused(focused bool) {
209 if s.focused == focused {
210 return
211 }
212 s.cache = nil
213 s.focused = focused
214 if s.Versioned != nil {
215 s.Bump()
216 }
217}
218
219// sessionItems takes a slice of [session.Session]s and convert them to a slice
220// of [ListItem]s.
221func sessionItems(t *styles.Styles, mode sessionsMode, sessions ...session.Session) []list.FilterableItem {
222 items := make([]list.FilterableItem, len(sessions))
223 for i, s := range sessions {
224 item := &SessionItem{Versioned: list.NewVersioned(), Session: s, t: t, sessionsMode: mode}
225 if mode == sessionsModeUpdating {
226 item.updateTitleInput = textinput.New()
227 item.updateTitleInput.SetVirtualCursor(false)
228 item.updateTitleInput.Prompt = ""
229 inputStyle := t.TextInput
230 inputStyle.Focused.Placeholder = t.Dialog.Sessions.RenamingPlaceholder
231 item.updateTitleInput.SetStyles(inputStyle)
232 item.updateTitleInput.Focus()
233 }
234 items[i] = item
235 }
236 return items
237}
238
239func matchedRanges(in []int) [][2]int {
240 if len(in) == 0 {
241 return [][2]int{}
242 }
243 current := [2]int{in[0], in[0]}
244 if len(in) == 1 {
245 return [][2]int{current}
246 }
247 var out [][2]int
248 for i := 1; i < len(in); i++ {
249 if in[i] == current[1]+1 {
250 current[1] = in[i]
251 } else {
252 out = append(out, current)
253 current = [2]int{in[i], in[i]}
254 }
255 }
256 out = append(out, current)
257 return out
258}
259
260func bytePosToVisibleCharPos(str string, rng [2]int) (int, int) {
261 bytePos, byteStart, byteStop := 0, rng[0], rng[1]
262 pos, start, stop := 0, 0, 0
263 gr := uniseg.NewGraphemes(str)
264 for byteStart > bytePos {
265 if !gr.Next() {
266 break
267 }
268 bytePos += len(gr.Str())
269 pos += max(1, gr.Width())
270 }
271 start = pos
272 for byteStop > bytePos {
273 if !gr.Next() {
274 break
275 }
276 bytePos += len(gr.Str())
277 pos += max(1, gr.Width())
278 }
279 stop = pos
280 return start, stop
281}