1package repo
2
3import (
4 "fmt"
5 "strings"
6 "time"
7
8 "github.com/charmbracelet/bubbles/key"
9 tea "github.com/charmbracelet/bubbletea"
10 "github.com/charmbracelet/glamour"
11 gansi "github.com/charmbracelet/glamour/ansi"
12 "github.com/charmbracelet/lipgloss"
13 ggit "github.com/charmbracelet/soft-serve/git"
14 "github.com/charmbracelet/soft-serve/ui/common"
15 "github.com/charmbracelet/soft-serve/ui/components/selector"
16 "github.com/charmbracelet/soft-serve/ui/components/viewport"
17 "github.com/charmbracelet/soft-serve/ui/git"
18 "github.com/muesli/reflow/wrap"
19 "github.com/muesli/termenv"
20)
21
22type logView int
23
24const (
25 logViewCommits logView = iota
26 logViewDiff
27)
28
29// LogCountMsg is a message that contains the number of commits in a repo.
30type LogCountMsg int64
31
32// LogItemsMsg is a message that contains a slice of LogItem.
33type LogItemsMsg []selector.IdentifiableItem
34
35// LogCommitMsg is a message that contains a git commit.
36type LogCommitMsg *ggit.Commit
37
38// LogDiffMsg is a message that contains a git diff.
39type LogDiffMsg *ggit.Diff
40
41// Log is a model that displays a list of commits and their diffs.
42type Log struct {
43 common common.Common
44 selector *selector.Selector
45 vp *viewport.Viewport
46 activeView logView
47 repo git.GitRepo
48 ref *ggit.Reference
49 count int64
50 nextPage int
51 activeCommit *ggit.Commit
52 selectedCommit *ggit.Commit
53 currentDiff *ggit.Diff
54}
55
56// NewLog creates a new Log model.
57func NewLog(common common.Common) *Log {
58 l := &Log{
59 common: common,
60 vp: viewport.New(common),
61 activeView: logViewCommits,
62 }
63 selector := selector.New(common, []selector.IdentifiableItem{}, LogItemDelegate{common.Styles})
64 selector.SetShowFilter(false)
65 selector.SetShowHelp(false)
66 selector.SetShowPagination(false)
67 selector.SetShowStatusBar(false)
68 selector.SetShowTitle(false)
69 selector.SetFilteringEnabled(false)
70 selector.DisableQuitKeybindings()
71 selector.KeyMap.NextPage = common.KeyMap.NextPage
72 selector.KeyMap.PrevPage = common.KeyMap.PrevPage
73 l.selector = selector
74 return l
75}
76
77// SetSize implements common.Component.
78func (l *Log) SetSize(width, height int) {
79 l.common.SetSize(width, height)
80 l.selector.SetSize(width, height)
81 l.vp.SetSize(width, height)
82}
83
84// ShortHelp implements help.KeyMap.
85func (l *Log) ShortHelp() []key.Binding {
86 switch l.activeView {
87 case logViewCommits:
88 return []key.Binding{
89 l.common.KeyMap.SelectItem,
90 }
91 case logViewDiff:
92 return []key.Binding{
93 l.common.KeyMap.UpDown,
94 l.common.KeyMap.BackItem,
95 }
96 default:
97 return []key.Binding{}
98 }
99}
100
101// FullHelp implements help.KeyMap.
102func (l *Log) FullHelp() [][]key.Binding {
103 k := l.selector.KeyMap
104 b := make([][]key.Binding, 0)
105 switch l.activeView {
106 case logViewCommits:
107 b = append(b, []key.Binding{
108 l.common.KeyMap.SelectItem,
109 l.common.KeyMap.BackItem,
110 })
111 b = append(b, [][]key.Binding{
112 {
113 k.CursorUp,
114 k.CursorDown,
115 },
116 {
117 k.NextPage,
118 k.PrevPage,
119 },
120 {
121 k.GoToStart,
122 k.GoToEnd,
123 },
124 }...)
125 case logViewDiff:
126 k := l.vp.KeyMap
127 b = append(b, []key.Binding{
128 l.common.KeyMap.BackItem,
129 })
130 b = append(b, [][]key.Binding{
131 {
132 k.PageDown,
133 k.PageUp,
134 },
135 {
136 k.HalfPageDown,
137 k.HalfPageUp,
138 },
139 {
140 k.Down,
141 k.Up,
142 },
143 }...)
144 }
145 return b
146}
147
148// Init implements tea.Model.
149func (l *Log) Init() tea.Cmd {
150 cmds := make([]tea.Cmd, 0)
151 cmds = append(cmds, l.updateCommitsCmd)
152 return tea.Batch(cmds...)
153}
154
155// Update implements tea.Model.
156func (l *Log) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
157 cmds := make([]tea.Cmd, 0)
158 switch msg := msg.(type) {
159 case RepoMsg:
160 l.count = 0
161 l.selector.Select(0)
162 l.nextPage = 0
163 l.activeView = 0
164 l.repo = git.GitRepo(msg)
165 case RefMsg:
166 l.ref = msg
167 l.count = 0
168 cmds = append(cmds, l.countCommitsCmd)
169 case LogCountMsg:
170 l.count = int64(msg)
171 case LogItemsMsg:
172 cmds = append(cmds, l.selector.SetItems(msg))
173 l.selector.SetPage(l.nextPage)
174 l.SetSize(l.common.Width, l.common.Height)
175 i := l.selector.SelectedItem()
176 if i != nil {
177 l.activeCommit = i.(LogItem).Commit
178 }
179 case tea.KeyMsg, tea.MouseMsg:
180 switch l.activeView {
181 case logViewCommits:
182 switch key := msg.(type) {
183 case tea.KeyMsg:
184 switch key.String() {
185 case "l", "right":
186 cmds = append(cmds, l.selector.SelectItem)
187 }
188 }
189 // This is a hack for loading commits on demand based on list.Pagination.
190 curPage := l.selector.Page()
191 s, cmd := l.selector.Update(msg)
192 m := s.(*selector.Selector)
193 l.selector = m
194 if m.Page() != curPage {
195 l.nextPage = m.Page()
196 l.selector.SetPage(curPage)
197 cmds = append(cmds, l.updateCommitsCmd)
198 }
199 cmds = append(cmds, cmd)
200 case logViewDiff:
201 switch key := msg.(type) {
202 case tea.KeyMsg:
203 switch key.String() {
204 case "h", "left":
205 l.activeView = logViewCommits
206 }
207 }
208 }
209 case selector.ActiveMsg:
210 switch sel := msg.IdentifiableItem.(type) {
211 case LogItem:
212 l.activeCommit = sel.Commit
213 }
214 cmds = append(cmds, updateStatusBarCmd)
215 case selector.SelectMsg:
216 switch sel := msg.IdentifiableItem.(type) {
217 case LogItem:
218 cmds = append(cmds, l.selectCommitCmd(sel.Commit))
219 }
220 case LogCommitMsg:
221 l.selectedCommit = msg
222 cmds = append(cmds, l.loadDiffCmd)
223 case LogDiffMsg:
224 l.currentDiff = msg
225 l.vp.SetContent(
226 lipgloss.JoinVertical(lipgloss.Top,
227 l.renderCommit(l.selectedCommit),
228 l.renderSummary(msg),
229 l.renderDiff(msg),
230 ),
231 )
232 l.vp.GotoTop()
233 l.activeView = logViewDiff
234 cmds = append(cmds, updateStatusBarCmd)
235 case tea.WindowSizeMsg:
236 if l.selectedCommit != nil && l.currentDiff != nil {
237 l.vp.SetContent(
238 lipgloss.JoinVertical(lipgloss.Top,
239 l.renderCommit(l.selectedCommit),
240 l.renderSummary(l.currentDiff),
241 l.renderDiff(l.currentDiff),
242 ),
243 )
244 }
245 if l.repo != nil {
246 cmds = append(cmds, l.updateCommitsCmd)
247 }
248 }
249 switch l.activeView {
250 case logViewDiff:
251 vp, cmd := l.vp.Update(msg)
252 l.vp = vp.(*viewport.Viewport)
253 if cmd != nil {
254 cmds = append(cmds, cmd)
255 }
256 }
257 return l, tea.Batch(cmds...)
258}
259
260// View implements tea.Model.
261func (l *Log) View() string {
262 switch l.activeView {
263 case logViewCommits:
264 return l.selector.View()
265 case logViewDiff:
266 return l.vp.View()
267 default:
268 return ""
269 }
270}
271
272// StatusBarValue returns the status bar value.
273func (l *Log) StatusBarValue() string {
274 c := l.activeCommit
275 if c == nil {
276 return ""
277 }
278 return fmt.Sprintf("%s by %s on %s",
279 c.ID.String()[:7],
280 c.Author.Name,
281 c.Author.When.Format("02 Jan 2006"),
282 )
283}
284
285// StatusBarInfo returns the status bar info.
286func (l *Log) StatusBarInfo() string {
287 switch l.activeView {
288 case logViewCommits:
289 // We're using l.nextPage instead of l.selector.Paginator.Page because
290 // of the paginator hack above.
291 return fmt.Sprintf("%d/%d", l.nextPage+1, l.selector.TotalPages())
292 case logViewDiff:
293 return fmt.Sprintf("%.f%%", l.vp.ScrollPercent()*100)
294 default:
295 return ""
296 }
297}
298
299func (l *Log) countCommitsCmd() tea.Msg {
300 count, err := l.repo.CountCommits(l.ref)
301 if err != nil {
302 return common.ErrorMsg(err)
303 }
304 return LogCountMsg(count)
305}
306
307func (l *Log) updateCommitsCmd() tea.Msg {
308 count := l.count
309 if l.count == 0 {
310 switch msg := l.countCommitsCmd().(type) {
311 case common.ErrorMsg:
312 return msg
313 case LogCountMsg:
314 count = int64(msg)
315 }
316 }
317 items := make([]selector.IdentifiableItem, count)
318 page := l.nextPage
319 limit := l.selector.PerPage()
320 skip := page * limit
321 // CommitsByPage pages start at 1
322 cc, err := l.repo.CommitsByPage(l.ref, page+1, limit)
323 if err != nil {
324 return common.ErrorMsg(err)
325 }
326 for i, c := range cc {
327 idx := i + skip
328 if int64(idx) >= count {
329 break
330 }
331 items[idx] = LogItem{c}
332 }
333 return LogItemsMsg(items)
334}
335
336func (l *Log) selectCommitCmd(commit *ggit.Commit) tea.Cmd {
337 return func() tea.Msg {
338 return LogCommitMsg(commit)
339 }
340}
341
342func (l *Log) loadDiffCmd() tea.Msg {
343 diff, err := l.repo.Diff(l.selectedCommit)
344 if err != nil {
345 return common.ErrorMsg(err)
346 }
347 return LogDiffMsg(diff)
348}
349
350func styleConfig() gansi.StyleConfig {
351 noColor := ""
352 s := glamour.DarkStyleConfig
353 s.Document.StylePrimitive.Color = &noColor
354 s.CodeBlock.Chroma.Text.Color = &noColor
355 s.CodeBlock.Chroma.Name.Color = &noColor
356 return s
357}
358
359func renderCtx() gansi.RenderContext {
360 return gansi.NewRenderContext(gansi.Options{
361 ColorProfile: termenv.TrueColor,
362 Styles: styleConfig(),
363 })
364}
365
366func (l *Log) renderCommit(c *ggit.Commit) string {
367 s := strings.Builder{}
368 // FIXME: lipgloss prints empty lines when CRLF is used
369 // sanitize commit message from CRLF
370 msg := strings.ReplaceAll(c.Message, "\r\n", "\n")
371 s.WriteString(fmt.Sprintf("%s\n%s\n%s\n%s\n",
372 l.common.Styles.LogCommitHash.Render("commit "+c.ID.String()),
373 l.common.Styles.LogCommitAuthor.Render(fmt.Sprintf("Author: %s <%s>", c.Author.Name, c.Author.Email)),
374 l.common.Styles.LogCommitDate.Render("Date: "+c.Committer.When.Format(time.UnixDate)),
375 l.common.Styles.LogCommitBody.Render(msg),
376 ))
377 return wrap.String(s.String(), l.common.Width-2)
378}
379
380func (l *Log) renderSummary(diff *ggit.Diff) string {
381 stats := strings.Split(diff.Stats().String(), "\n")
382 for i, line := range stats {
383 ch := strings.Split(line, "|")
384 if len(ch) > 1 {
385 adddel := ch[len(ch)-1]
386 adddel = strings.ReplaceAll(adddel, "+", l.common.Styles.LogCommitStatsAdd.Render("+"))
387 adddel = strings.ReplaceAll(adddel, "-", l.common.Styles.LogCommitStatsDel.Render("-"))
388 stats[i] = strings.Join(ch[:len(ch)-1], "|") + "|" + adddel
389 }
390 }
391 return wrap.String(strings.Join(stats, "\n"), l.common.Width-2)
392}
393
394func (l *Log) renderDiff(diff *ggit.Diff) string {
395 var s strings.Builder
396 var pr strings.Builder
397 diffChroma := &gansi.CodeBlockElement{
398 Code: diff.Patch(),
399 Language: "diff",
400 }
401 err := diffChroma.Render(&pr, renderCtx())
402 if err != nil {
403 s.WriteString(fmt.Sprintf("\n%s", err.Error()))
404 } else {
405 s.WriteString(fmt.Sprintf("\n%s", pr.String()))
406 }
407 return wrap.String(s.String(), l.common.Width-2)
408}