| 1 | package cli |
| 2 | |
| 3 | import ( |
| 4 | "sort" |
| 5 | "strings" |
| 6 | "unicode/utf8" |
| 7 | |
| 8 | tea "charm.land/bubbletea/v2" |
| 9 | |
| 10 | "reasonix/internal/config" |
| 11 | "reasonix/internal/mcpdiag" |
| 12 | "reasonix/internal/plugin" |
| 13 | ) |
| 14 | |
| 15 | const ( |
| 16 | mcpListMaxRows = 10 |
| 17 | mcpToolMaxRows = 14 |
| 18 | ) |
| 19 | |
| 20 | type mcpStage int |
| 21 | |
| 22 | const ( |
| 23 | mcpStageList mcpStage = iota |
| 24 | mcpStageDetail |
| 25 | mcpStageTools |
| 26 | mcpStageLogs |
| 27 | mcpStageMode |
| 28 | mcpStageConfirmRemove |
| 29 | mcpStageConfirmClearAuth |
| 30 | ) |
| 31 | |
| 32 | type mcpManager struct { |
| 33 | stage mcpStage |
| 34 | snapshot mcpSnapshot |
| 35 | sel int |
| 36 | name string |
| 37 | action int |
| 38 | mode int |
| 39 | confirm int |
| 40 | } |
| 41 | |
| 42 | type mcpSnapshot struct { |
| 43 | servers []mcpServerView |
| 44 | configPath string |
| 45 | err string |
| 46 | } |
| 47 | |
| 48 | type mcpServerView struct { |
| 49 | Name string |
| 50 | Transport string |
| 51 | Status string |
| 52 | BuiltIn bool |
| 53 | Configured bool |
| 54 | AutoStart bool |
| 55 | Tier string |
| 56 | Command string |
| 57 | Args []string |
| 58 | URL string |
| 59 | EnvKeys []string |
| 60 | Tools int |
| 61 | Prompts int |
| 62 | Resources int |
| 63 | HasTools bool |
| 64 | Error string |
| 65 | ToolList []plugin.ToolInfo |
| 66 | AuthStatus string |
| 67 | AuthURL string |
| 68 | Source config.MCPConfigSource |
| 69 | ConfigPath string |
| 70 | |
| 71 | authConfigured bool |
| 72 | } |
| 73 | |
| 74 | type mcpAction string |
| 75 | |
| 76 | const ( |
| 77 | mcpActionViewTools mcpAction = "view-tools" |
| 78 | mcpActionMode mcpAction = "mode" |
| 79 | mcpActionEdit mcpAction = "edit" |
| 80 | mcpActionConnect mcpAction = "connect" |
| 81 | mcpActionAuth mcpAction = "auth" |
| 82 | mcpActionClearAuth mcpAction = "clear-auth" |
| 83 | mcpActionLogs mcpAction = "logs" |
| 84 | mcpActionDisable mcpAction = "disable" |
| 85 | mcpActionRemove mcpAction = "remove" |
| 86 | ) |
| 87 | |
| 88 | type mcpActionItem struct { |
| 89 | kind mcpAction |
| 90 | label string |
| 91 | } |
| 92 | |
| 93 | // mcpConnectCause is which request started a background connect; it decides |
| 94 | // the notice the result posts. |
| 95 | type mcpConnectCause int |
| 96 | |
| 97 | const ( |
| 98 | mcpConnectRetry mcpConnectCause = iota |
| 99 | mcpConnectMode |
| 100 | mcpConnectAuth |
| 101 | ) |
| 102 | |
| 103 | type mcpConnectDoneMsg struct { |
| 104 | server string |
| 105 | cause mcpConnectCause |
| 106 | entry *config.PluginEntry // the saved entry when cause is mcpConnectMode |
| 107 | tools int |
| 108 | err error |
| 109 | } |
| 110 | |
| 111 | type mcpExternalDoneMsg struct { |
| 112 | label string |
| 113 | target string |
| 114 | server string |
| 115 | err error |
| 116 | } |
| 117 | |
| 118 | var mcpTierChoices = []string{"background", "eager"} |
| 119 | |
| 120 | func (m *chatTUI) openMCPManager(name string) { |
| 121 | m.mcp = &mcpManager{stage: mcpStageList, snapshot: m.buildMCPSnapshot()} |
| 122 | if name != "" { |
| 123 | m.mcp.selectName(name) |
| 124 | m.mcp.stage = mcpStageDetail |
| 125 | } |
| 126 | m.mcp.clamp() |
| 127 | } |
| 128 | |
| 129 | func (m *chatTUI) refreshMCPManager() { |
| 130 | if m.mcp == nil { |
| 131 | return |
| 132 | } |
| 133 | m.mcp.snapshot = m.buildMCPSnapshot() |
| 134 | m.mcp.clamp() |
| 135 | } |
| 136 | |
| 137 | func (m chatTUI) handleMCPManagerKey(msg tea.KeyPressMsg) (tea.Model, tea.Cmd) { |
| 138 | p := m.mcp |
| 139 | if p == nil { |
| 140 | return m, nil |
| 141 | } |
| 142 | switch msg.String() { |
| 143 | case "ctrl+c", "q": |
| 144 | m.mcp = nil |
| 145 | return m, nil |
| 146 | case "esc", "left", "h": |
| 147 | switch p.stage { |
| 148 | case mcpStageList: |
| 149 | m.mcp = nil |
| 150 | return m, nil |
| 151 | case mcpStageDetail: |
| 152 | p.stage = mcpStageList |
| 153 | p.action = 0 |
| 154 | return m, nil |
| 155 | default: |
| 156 | p.stage = mcpStageDetail |
| 157 | p.action = 0 |
| 158 | if p.name == "" { |
| 159 | p.stage = mcpStageList |
| 160 | } |
| 161 | return m, nil |
| 162 | } |
| 163 | } |
| 164 | |
| 165 | switch p.stage { |
| 166 | case mcpStageList: |
| 167 | switch msg.String() { |
| 168 | case "up", "k": |
| 169 | if p.sel > 0 { |
| 170 | p.sel-- |
| 171 | } |
| 172 | case "down", "j": |
| 173 | if p.sel < len(p.snapshot.servers)-1 { |
| 174 | p.sel++ |
| 175 | } |
| 176 | case "r": |
| 177 | p.snapshot = m.buildMCPSnapshot() |
| 178 | case "enter", "right", "l": |
| 179 | if len(p.snapshot.servers) > 0 { |
| 180 | p.name = p.snapshot.servers[p.sel].Name |
| 181 | p.stage = mcpStageDetail |
| 182 | p.action = 0 |
| 183 | } |
| 184 | } |
| 185 | case mcpStageDetail: |
| 186 | v, ok := p.selectedServer() |
| 187 | if !ok { |
| 188 | p.stage = mcpStageList |
| 189 | return m, nil |
| 190 | } |
| 191 | actions := mcpActionsFor(v, p.snapshot.configPath) |
| 192 | switch msg.String() { |
| 193 | case "up", "k": |
| 194 | if p.action > 0 { |
| 195 | p.action-- |
| 196 | } |
| 197 | case "down", "j": |
| 198 | if p.action < len(actions)-1 { |
| 199 | p.action++ |
| 200 | } |
| 201 | case "enter": |
| 202 | if len(actions) > 0 { |
| 203 | return m.applyMCPAction(v, actions[p.action].kind) |
| 204 | } |
| 205 | default: |
| 206 | if idx, ok := numberKeyIndex(msg.String(), len(actions)); ok { |
| 207 | p.action = idx |
| 208 | return m.applyMCPAction(v, actions[p.action].kind) |
| 209 | } |
| 210 | } |
| 211 | case mcpStageMode: |
| 212 | switch msg.String() { |
| 213 | case "up", "k": |
| 214 | if p.mode > 0 { |
| 215 | p.mode-- |
| 216 | } |
| 217 | case "down", "j": |
| 218 | if p.mode < len(mcpTierChoices)-1 { |
| 219 | p.mode++ |
| 220 | } |
| 221 | case "enter": |
| 222 | return m.applyMCPMode(mcpTierChoices[p.mode]) |
| 223 | default: |
| 224 | if idx, ok := numberKeyIndex(msg.String(), len(mcpTierChoices)); ok { |
| 225 | p.mode = idx |
| 226 | return m.applyMCPMode(mcpTierChoices[p.mode]) |
| 227 | } |
| 228 | } |
| 229 | case mcpStageConfirmRemove: |
| 230 | switch msg.String() { |
| 231 | case "up", "k", "down", "j": |
| 232 | if p.confirm == 0 { |
| 233 | p.confirm = 1 |
| 234 | } else { |
| 235 | p.confirm = 0 |
| 236 | } |
| 237 | case "y": |
| 238 | p.confirm = 0 |
| 239 | return m.removeSelectedMCP() |
| 240 | case "n": |
| 241 | p.stage = mcpStageDetail |
| 242 | case "enter": |
| 243 | if p.confirm == 0 { |
| 244 | return m.removeSelectedMCP() |
| 245 | } |
| 246 | p.stage = mcpStageDetail |
| 247 | } |
| 248 | case mcpStageConfirmClearAuth: |
| 249 | switch msg.String() { |
| 250 | case "up", "k", "down", "j": |
| 251 | if p.confirm == 0 { |
| 252 | p.confirm = 1 |
| 253 | } else { |
| 254 | p.confirm = 0 |
| 255 | } |
| 256 | case "y": |
| 257 | p.confirm = 0 |
| 258 | return m.clearSelectedMCPAuthentication() |
| 259 | case "n": |
| 260 | p.stage = mcpStageDetail |
| 261 | case "enter": |
| 262 | if p.confirm == 0 { |
| 263 | return m.clearSelectedMCPAuthentication() |
| 264 | } |
| 265 | p.stage = mcpStageDetail |
| 266 | } |
| 267 | } |
| 268 | return m, nil |
| 269 | } |
| 270 | |
| 271 | func (p *mcpManager) clamp() { |
| 272 | if p.sel < 0 { |
| 273 | p.sel = 0 |
| 274 | } |
| 275 | if n := len(p.snapshot.servers); n > 0 && p.sel >= n { |
| 276 | p.sel = n - 1 |
| 277 | } |
| 278 | if p.name != "" { |
| 279 | p.selectName(p.name) |
| 280 | } |
| 281 | if p.action < 0 { |
| 282 | p.action = 0 |
| 283 | } |
| 284 | if p.mode < 0 { |
| 285 | p.mode = 0 |
| 286 | } |
| 287 | if p.mode >= len(mcpTierChoices) { |
| 288 | p.mode = len(mcpTierChoices) - 1 |
| 289 | } |
| 290 | if p.confirm < 0 || p.confirm > 1 { |
| 291 | p.confirm = 0 |
| 292 | } |
| 293 | } |
| 294 | |
| 295 | func (p *mcpManager) selectName(name string) bool { |
| 296 | for i, s := range p.snapshot.servers { |
| 297 | if s.Name == name { |
| 298 | p.sel = i |
| 299 | p.name = name |
| 300 | return true |
| 301 | } |
| 302 | } |
| 303 | return false |
| 304 | } |
| 305 | |
| 306 | func (p *mcpManager) selectedServer() (mcpServerView, bool) { |
| 307 | if p.name != "" { |
| 308 | for _, s := range p.snapshot.servers { |
| 309 | if s.Name == p.name { |
| 310 | return s, true |
| 311 | } |
| 312 | } |
| 313 | } |
| 314 | if p.sel >= 0 && p.sel < len(p.snapshot.servers) { |
| 315 | return p.snapshot.servers[p.sel], true |
| 316 | } |
| 317 | return mcpServerView{}, false |
| 318 | } |
| 319 | |
| 320 | func (m chatTUI) buildMCPSnapshot() mcpSnapshot { |
| 321 | workspace := m.mcpWorkspaceRoot() |
| 322 | snap := mcpSnapshot{configPath: config.UserConfigPath()} |
| 323 | cfg, err := config.LoadForRoot(workspace) |
| 324 | if err != nil { |
| 325 | snap.err = err.Error() |
| 326 | } |
| 327 | configured := map[string]config.PluginEntry{} |
| 328 | var configuredEntries []config.PluginEntry |
| 329 | if cfg != nil { |
| 330 | configuredEntries = append(configuredEntries, cfg.Plugins...) |
| 331 | for _, p := range configuredEntries { |
| 332 | configured[p.Name] = p |
| 333 | } |
| 334 | } |
| 335 | seen := map[string]bool{} |
| 336 | if m.host != nil { |
| 337 | for _, s := range m.host.Servers() { |
| 338 | v := mcpServerView{ |
| 339 | Name: s.Name, Transport: fallbackText(s.Transport, "stdio"), Status: "connected", |
| 340 | Tools: s.Tools, Prompts: s.Prompts, Resources: s.Resources, |
| 341 | HasTools: s.HasTools, |
| 342 | ToolList: append([]plugin.ToolInfo(nil), s.ToolList...), |
| 343 | } |
| 344 | if p, ok := configured[s.Name]; ok { |
| 345 | v = withMCPPluginConfig(v, p, workspace) |
| 346 | } |
| 347 | snap.servers = append(snap.servers, v) |
| 348 | seen[s.Name] = true |
| 349 | } |
| 350 | for _, f := range m.host.Failures() { |
| 351 | v := mcpServerView{ |
| 352 | Name: f.Name, Transport: fallbackText(f.Transport, "stdio"), Status: "failed", |
| 353 | Error: f.Error, |
| 354 | } |
| 355 | if p, ok := configured[f.Name]; ok { |
| 356 | v = withMCPPluginConfig(v, p, workspace) |
| 357 | } |
| 358 | snap.servers = append(snap.servers, v) |
| 359 | seen[f.Name] = true |
| 360 | } |
| 361 | for _, name := range m.host.ConnectingServers() { |
| 362 | if seen[name] { |
| 363 | continue |
| 364 | } |
| 365 | v := mcpServerView{Name: name, Status: "initializing"} |
| 366 | if p, ok := configured[name]; ok { |
| 367 | v = withMCPPluginConfig(v, p, workspace) |
| 368 | } |
| 369 | snap.servers = append(snap.servers, v) |
| 370 | seen[name] = true |
| 371 | } |
| 372 | } |
| 373 | for _, p := range configuredEntries { |
| 374 | if seen[p.Name] { |
| 375 | continue |
| 376 | } |
| 377 | v := mcpServerView{Name: p.Name} |
| 378 | switch { |
| 379 | case m.mcpDisabled[p.Name] || !config.MCPServerEnabled(p, workspace): |
| 380 | v.Status = "disabled" |
| 381 | default: |
| 382 | v.Status = "deferred" |
| 383 | } |
| 384 | v = withMCPPluginConfig(v, p, workspace) |
| 385 | snap.servers = append(snap.servers, v) |
| 386 | seen[p.Name] = true |
| 387 | } |
| 388 | sort.SliceStable(snap.servers, func(i, j int) bool { |
| 389 | return mcpServerGroupRank(snap.servers[i]) < mcpServerGroupRank(snap.servers[j]) |
| 390 | }) |
| 391 | return snap |
| 392 | } |
| 393 | |
| 394 | func (m chatTUI) mcpWorkspaceRoot() string { |
| 395 | if m.ctrl != nil && strings.TrimSpace(m.ctrl.WorkspaceRoot()) != "" { |
| 396 | return m.ctrl.WorkspaceRoot() |
| 397 | } |
| 398 | return mcpCLIWorkspaceRoot() |
| 399 | } |
| 400 | |
| 401 | func withMCPPluginConfig(v mcpServerView, p config.PluginEntry, workspace string) mcpServerView { |
| 402 | transport := strings.ToLower(strings.TrimSpace(p.Type)) |
| 403 | if transport == "" { |
| 404 | transport = "stdio" |
| 405 | } |
| 406 | v.Transport = transport |
| 407 | v.Configured = true |
| 408 | v.AutoStart = p.ShouldAutoStart() |
| 409 | v.Tier = p.ResolvedTier() |
| 410 | v.Command = p.Command |
| 411 | v.Args = append([]string(nil), p.Args...) |
| 412 | v.URL = p.URL |
| 413 | v.Source = p.Source |
| 414 | v.ConfigPath = config.MCPConfigPathForEntry(workspace, p) |
| 415 | v.authConfigured = mcpdiag.HasAuthConfig(p.Headers, p.Env, p.URL) |
| 416 | if len(p.Env) > 0 { |
| 417 | v.EnvKeys = make([]string, 0, len(p.Env)) |
| 418 | for k := range p.Env { |
| 419 | v.EnvKeys = append(v.EnvKeys, k) |
| 420 | } |
| 421 | sort.Strings(v.EnvKeys) |
| 422 | } |
| 423 | auth := mcpdiag.DiagnoseAuth(v.Transport, v.Status, v.Error, v.URL, v.authConfigured) |
| 424 | v.AuthStatus = auth.Status |
| 425 | v.AuthURL = auth.URL |
| 426 | return v |
| 427 | } |
| 428 | |
| 429 | func mcpServerGroupRank(v mcpServerView) int { |
| 430 | switch { |
| 431 | case v.BuiltIn || v.Source == config.MCPSourcePluginPackage: |
| 432 | return 0 |
| 433 | case v.Source.ProjectScoped(): |
| 434 | return 1 |
| 435 | default: |
| 436 | return 2 |
| 437 | } |
| 438 | } |
| 439 | |
| 440 | func visibleRange(total, sel, limit int) (int, int) { |
| 441 | if limit <= 0 || total <= limit { |
| 442 | return 0, total |
| 443 | } |
| 444 | if sel < 0 { |
| 445 | sel = 0 |
| 446 | } |
| 447 | if sel >= total { |
| 448 | sel = total - 1 |
| 449 | } |
| 450 | start := max(sel-limit/2, 0) |
| 451 | if start+limit > total { |
| 452 | start = total - limit |
| 453 | } |
| 454 | return start, start + limit |
| 455 | } |
| 456 | |
| 457 | func numberKeyIndex(s string, limit int) (int, bool) { |
| 458 | if len(s) != 1 || s[0] < '1' || s[0] > '9' { |
| 459 | return 0, false |
| 460 | } |
| 461 | idx := int(s[0] - '1') |
| 462 | return idx, idx < limit |
| 463 | } |
| 464 | |
| 465 | func fallbackText(s, fallback string) string { |
| 466 | if strings.TrimSpace(s) == "" { |
| 467 | return fallback |
| 468 | } |
| 469 | return s |
| 470 | } |
| 471 | |
| 472 | func titleText(s string) string { |
| 473 | if s == "" { |
| 474 | return "MCP" |
| 475 | } |
| 476 | r, size := utf8.DecodeRuneInString(s) |
| 477 | if r == utf8.RuneError && size == 0 { |
| 478 | return s |
| 479 | } |
| 480 | return strings.ToUpper(string(r)) + s[size:] |
| 481 | } |
| 482 |