1package dialog
2
3import (
4 "fmt"
5 "slices"
6 "strings"
7
8 "github.com/charmbracelet/bubbles/v2/key"
9 tea "github.com/charmbracelet/bubbletea/v2"
10 "github.com/charmbracelet/lipgloss/v2"
11 "github.com/opencode-ai/opencode/internal/config"
12 "github.com/opencode-ai/opencode/internal/llm/models"
13 "github.com/opencode-ai/opencode/internal/tui/layout"
14 "github.com/opencode-ai/opencode/internal/tui/styles"
15 "github.com/opencode-ai/opencode/internal/tui/theme"
16 "github.com/opencode-ai/opencode/internal/tui/util"
17)
18
19const (
20 numVisibleModels = 10
21 maxDialogWidth = 40
22)
23
24// ModelSelectedMsg is sent when a model is selected
25type ModelSelectedMsg struct {
26 Model models.Model
27}
28
29// CloseModelDialogMsg is sent when a model is selected
30type CloseModelDialogMsg struct{}
31
32// ModelDialog interface for the model selection dialog
33type ModelDialog interface {
34 util.Model
35 layout.Bindings
36}
37
38type modelDialogCmp struct {
39 models []models.Model
40 provider models.ModelProvider
41 availableProviders []models.ModelProvider
42
43 selectedIdx int
44 width int
45 height int
46 scrollOffset int
47 hScrollOffset int
48 hScrollPossible bool
49}
50
51type modelKeyMap struct {
52 Up key.Binding
53 Down key.Binding
54 Left key.Binding
55 Right key.Binding
56 Enter key.Binding
57 Escape key.Binding
58 J key.Binding
59 K key.Binding
60 H key.Binding
61 L key.Binding
62}
63
64var modelKeys = modelKeyMap{
65 Up: key.NewBinding(
66 key.WithKeys("up"),
67 key.WithHelp("↑", "previous model"),
68 ),
69 Down: key.NewBinding(
70 key.WithKeys("down"),
71 key.WithHelp("↓", "next model"),
72 ),
73 Left: key.NewBinding(
74 key.WithKeys("left"),
75 key.WithHelp("←", "scroll left"),
76 ),
77 Right: key.NewBinding(
78 key.WithKeys("right"),
79 key.WithHelp("→", "scroll right"),
80 ),
81 Enter: key.NewBinding(
82 key.WithKeys("enter"),
83 key.WithHelp("enter", "select model"),
84 ),
85 Escape: key.NewBinding(
86 key.WithKeys("esc"),
87 key.WithHelp("esc", "close"),
88 ),
89 J: key.NewBinding(
90 key.WithKeys("j"),
91 key.WithHelp("j", "next model"),
92 ),
93 K: key.NewBinding(
94 key.WithKeys("k"),
95 key.WithHelp("k", "previous model"),
96 ),
97 H: key.NewBinding(
98 key.WithKeys("h"),
99 key.WithHelp("h", "scroll left"),
100 ),
101 L: key.NewBinding(
102 key.WithKeys("l"),
103 key.WithHelp("l", "scroll right"),
104 ),
105}
106
107func (m *modelDialogCmp) Init() tea.Cmd {
108 m.setupModels()
109 return nil
110}
111
112func (m *modelDialogCmp) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
113 switch msg := msg.(type) {
114 case tea.KeyMsg:
115 switch {
116 case key.Matches(msg, modelKeys.Up) || key.Matches(msg, modelKeys.K):
117 m.moveSelectionUp()
118 case key.Matches(msg, modelKeys.Down) || key.Matches(msg, modelKeys.J):
119 m.moveSelectionDown()
120 case key.Matches(msg, modelKeys.Left) || key.Matches(msg, modelKeys.H):
121 if m.hScrollPossible {
122 m.switchProvider(-1)
123 }
124 case key.Matches(msg, modelKeys.Right) || key.Matches(msg, modelKeys.L):
125 if m.hScrollPossible {
126 m.switchProvider(1)
127 }
128 case key.Matches(msg, modelKeys.Enter):
129 util.ReportInfo(fmt.Sprintf("selected model: %s", m.models[m.selectedIdx].Name))
130 return m, util.CmdHandler(ModelSelectedMsg{Model: m.models[m.selectedIdx]})
131 case key.Matches(msg, modelKeys.Escape):
132 return m, util.CmdHandler(CloseModelDialogMsg{})
133 }
134 case tea.WindowSizeMsg:
135 m.width = msg.Width
136 m.height = msg.Height
137 }
138
139 return m, nil
140}
141
142// moveSelectionUp moves the selection up or wraps to bottom
143func (m *modelDialogCmp) moveSelectionUp() {
144 if m.selectedIdx > 0 {
145 m.selectedIdx--
146 } else {
147 m.selectedIdx = len(m.models) - 1
148 m.scrollOffset = max(0, len(m.models)-numVisibleModels)
149 }
150
151 // Keep selection visible
152 if m.selectedIdx < m.scrollOffset {
153 m.scrollOffset = m.selectedIdx
154 }
155}
156
157// moveSelectionDown moves the selection down or wraps to top
158func (m *modelDialogCmp) moveSelectionDown() {
159 if m.selectedIdx < len(m.models)-1 {
160 m.selectedIdx++
161 } else {
162 m.selectedIdx = 0
163 m.scrollOffset = 0
164 }
165
166 // Keep selection visible
167 if m.selectedIdx >= m.scrollOffset+numVisibleModels {
168 m.scrollOffset = m.selectedIdx - (numVisibleModels - 1)
169 }
170}
171
172func (m *modelDialogCmp) switchProvider(offset int) {
173 newOffset := m.hScrollOffset + offset
174
175 // Ensure we stay within bounds
176 if newOffset < 0 {
177 newOffset = len(m.availableProviders) - 1
178 }
179 if newOffset >= len(m.availableProviders) {
180 newOffset = 0
181 }
182
183 m.hScrollOffset = newOffset
184 m.provider = m.availableProviders[m.hScrollOffset]
185 m.setupModelsForProvider(m.provider)
186}
187
188func (m *modelDialogCmp) View() string {
189 t := theme.CurrentTheme()
190 baseStyle := styles.BaseStyle()
191
192 // Capitalize first letter of provider name
193 providerName := strings.ToUpper(string(m.provider)[:1]) + string(m.provider[1:])
194 title := baseStyle.
195 Foreground(t.Primary()).
196 Bold(true).
197 Width(maxDialogWidth).
198 Padding(0, 0, 1).
199 Render(fmt.Sprintf("Select %s Model", providerName))
200
201 // Render visible models
202 endIdx := min(m.scrollOffset+numVisibleModels, len(m.models))
203 modelItems := make([]string, 0, endIdx-m.scrollOffset)
204
205 for i := m.scrollOffset; i < endIdx; i++ {
206 itemStyle := baseStyle.Width(maxDialogWidth)
207 if i == m.selectedIdx {
208 itemStyle = itemStyle.Background(t.Primary()).
209 Foreground(t.Background()).Bold(true)
210 }
211 modelItems = append(modelItems, itemStyle.Render(m.models[i].Name))
212 }
213
214 scrollIndicator := m.getScrollIndicators(maxDialogWidth)
215
216 content := lipgloss.JoinVertical(
217 lipgloss.Left,
218 title,
219 baseStyle.Width(maxDialogWidth).Render(lipgloss.JoinVertical(lipgloss.Left, modelItems...)),
220 scrollIndicator,
221 )
222
223 return baseStyle.Padding(1, 2).
224 Border(lipgloss.RoundedBorder()).
225 BorderBackground(t.Background()).
226 BorderForeground(t.TextMuted()).
227 Width(lipgloss.Width(content) + 4).
228 Render(content)
229}
230
231func (m *modelDialogCmp) getScrollIndicators(maxWidth int) string {
232 var indicator string
233
234 if len(m.models) > numVisibleModels {
235 if m.scrollOffset > 0 {
236 indicator += "↑ "
237 }
238 if m.scrollOffset+numVisibleModels < len(m.models) {
239 indicator += "↓ "
240 }
241 }
242
243 if m.hScrollPossible {
244 if m.hScrollOffset > 0 {
245 indicator = "← " + indicator
246 }
247 if m.hScrollOffset < len(m.availableProviders)-1 {
248 indicator += "→"
249 }
250 }
251
252 if indicator == "" {
253 return ""
254 }
255
256 t := theme.CurrentTheme()
257 baseStyle := styles.BaseStyle()
258
259 return baseStyle.
260 Foreground(t.Primary()).
261 Width(maxWidth).
262 Align(lipgloss.Right).
263 Bold(true).
264 Render(indicator)
265}
266
267func (m *modelDialogCmp) BindingKeys() []key.Binding {
268 return layout.KeyMapToSlice(modelKeys)
269}
270
271func (m *modelDialogCmp) setupModels() {
272 cfg := config.Get()
273 modelInfo := GetSelectedModel(cfg)
274 m.availableProviders = getEnabledProviders(cfg)
275 m.hScrollPossible = len(m.availableProviders) > 1
276
277 m.provider = modelInfo.Provider
278 m.hScrollOffset = findProviderIndex(m.availableProviders, m.provider)
279
280 m.setupModelsForProvider(m.provider)
281}
282
283func GetSelectedModel(cfg *config.Config) models.Model {
284 agentCfg := cfg.Agents[config.AgentCoder]
285 selectedModelId := agentCfg.Model
286 return models.SupportedModels[selectedModelId]
287}
288
289func getEnabledProviders(cfg *config.Config) []models.ModelProvider {
290 var providers []models.ModelProvider
291 for providerId, provider := range cfg.Providers {
292 if !provider.Disabled {
293 providers = append(providers, providerId)
294 }
295 }
296
297 // Sort by provider popularity
298 slices.SortFunc(providers, func(a, b models.ModelProvider) int {
299 rA := models.ProviderPopularity[a]
300 rB := models.ProviderPopularity[b]
301
302 // models not included in popularity ranking default to last
303 if rA == 0 {
304 rA = 999
305 }
306 if rB == 0 {
307 rB = 999
308 }
309 return rA - rB
310 })
311 return providers
312}
313
314// findProviderIndex returns the index of the provider in the list, or -1 if not found
315func findProviderIndex(providers []models.ModelProvider, provider models.ModelProvider) int {
316 for i, p := range providers {
317 if p == provider {
318 return i
319 }
320 }
321 return -1
322}
323
324func (m *modelDialogCmp) setupModelsForProvider(provider models.ModelProvider) {
325 cfg := config.Get()
326 agentCfg := cfg.Agents[config.AgentCoder]
327 selectedModelId := agentCfg.Model
328
329 m.provider = provider
330 m.models = getModelsForProvider(provider)
331 m.selectedIdx = 0
332 m.scrollOffset = 0
333
334 // Try to select the current model if it belongs to this provider
335 if provider == models.SupportedModels[selectedModelId].Provider {
336 for i, model := range m.models {
337 if model.ID == selectedModelId {
338 m.selectedIdx = i
339 // Adjust scroll position to keep selected model visible
340 if m.selectedIdx >= numVisibleModels {
341 m.scrollOffset = m.selectedIdx - (numVisibleModels - 1)
342 }
343 break
344 }
345 }
346 }
347}
348
349func getModelsForProvider(provider models.ModelProvider) []models.Model {
350 var providerModels []models.Model
351 for _, model := range models.SupportedModels {
352 if model.Provider == provider {
353 providerModels = append(providerModels, model)
354 }
355 }
356
357 // reverse alphabetical order (if llm naming was consistent latest would appear first)
358 slices.SortFunc(providerModels, func(a, b models.Model) int {
359 if a.Name > b.Name {
360 return -1
361 } else if a.Name < b.Name {
362 return 1
363 }
364 return 0
365 })
366
367 return providerModels
368}
369
370func NewModelDialogCmp() ModelDialog {
371 return &modelDialogCmp{}
372}