1package config
2
3import (
4 "cmp"
5 "context"
6 "encoding/json"
7 "fmt"
8 "log/slog"
9 "maps"
10 "os"
11 "os/exec"
12 "path/filepath"
13 "regexp"
14 "runtime"
15 "slices"
16 "strconv"
17 "strings"
18 "testing"
19
20 "charm.land/catwalk/pkg/catwalk"
21 "github.com/charmbracelet/crush/internal/agent/hyper"
22 "github.com/charmbracelet/crush/internal/csync"
23 "github.com/charmbracelet/crush/internal/env"
24 "github.com/charmbracelet/crush/internal/filepathext"
25 "github.com/charmbracelet/crush/internal/fsext"
26 "github.com/charmbracelet/crush/internal/home"
27 powernapConfig "github.com/charmbracelet/x/powernap/pkg/config"
28 "github.com/qjebbs/go-jsons"
29)
30
31const defaultCatwalkURL = "https://catwalk.charm.land"
32
33// Load loads the configuration from the default paths and returns a
34// ConfigStore that owns both the pure-data Config and all runtime state.
35func Load(workingDir, dataDir string, debug bool) (*ConfigStore, error) {
36 configPaths := lookupConfigs(workingDir)
37
38 cfg, loadedPaths, err := loadFromConfigPaths(configPaths)
39 if err != nil {
40 return nil, fmt.Errorf("failed to load config from paths %v: %w", configPaths, err)
41 }
42
43 cfg.setDefaults(workingDir, dataDir)
44
45 store := &ConfigStore{
46 config: cfg,
47 workingDir: workingDir,
48 globalDataPath: GlobalConfigData(),
49 workspacePath: filepath.Join(cfg.Options.DataDirectory, fmt.Sprintf("%s.json", appName)),
50 loadedPaths: loadedPaths,
51 }
52
53 if debug {
54 cfg.Options.Debug = true
55 }
56
57 // Load workspace config last so it has highest priority.
58 if wsData, err := os.ReadFile(store.workspacePath); err == nil && len(wsData) > 0 {
59 if !json.Valid(wsData) {
60 return nil, fmt.Errorf("invalid JSON in config file %s", store.workspacePath)
61 }
62 merged, mergeErr := loadFromBytes(append([][]byte{mustMarshalConfig(cfg)}, wsData))
63 if mergeErr == nil {
64 // Preserve defaults that setDefaults already applied.
65 dataDir := cfg.Options.DataDirectory
66 *cfg = *merged
67 cfg.setDefaults(workingDir, dataDir)
68 store.config = cfg
69 store.loadedPaths = append(store.loadedPaths, store.workspacePath)
70 }
71 }
72
73 // Validate hooks after all config merging is complete so workspace
74 // hooks also get their matcher regexes compiled.
75 if err := cfg.ValidateHooks(); err != nil {
76 return nil, fmt.Errorf("invalid hook configuration: %w", err)
77 }
78
79 if !isInsideWorktree() {
80 const depth = 2
81 const items = 100
82 slog.Warn("No git repository detected in working directory, will limit file walk operations", "depth", depth, "items", items)
83 assignIfNil(&cfg.Tools.Ls.MaxDepth, depth)
84 assignIfNil(&cfg.Tools.Ls.MaxItems, items)
85 assignIfNil(&cfg.Options.TUI.Completions.MaxDepth, depth)
86 assignIfNil(&cfg.Options.TUI.Completions.MaxItems, items)
87 }
88
89 if isAppleTerminal() {
90 slog.Warn("Detected Apple Terminal, enabling transparent mode")
91 assignIfNil(&cfg.Options.TUI.Transparent, true)
92 }
93
94 // Load known providers, this loads the config from catwalk
95 providers, err := Providers(cfg)
96 if err != nil {
97 return nil, err
98 }
99 store.knownProviders = providers
100
101 env := env.New()
102 // Configure providers
103 valueResolver := NewShellVariableResolver(env)
104 store.resolver = valueResolver
105
106 // Disable auto-reload during initial load to prevent nested calls from
107 // config-modifying operations inside configureProviders.
108 store.autoReloadDisabled = true
109 defer func() { store.autoReloadDisabled = false }()
110
111 if err := cfg.configureProviders(store, env, valueResolver, store.knownProviders); err != nil {
112 return nil, fmt.Errorf("failed to configure providers: %w", err)
113 }
114
115 if !cfg.IsConfigured() {
116 slog.Warn("No providers configured")
117 return store, nil
118 }
119
120 if err := configureSelectedModels(store, store.knownProviders, true); err != nil {
121 return nil, fmt.Errorf("failed to configure selected models: %w", err)
122 }
123 store.SetupAgents()
124
125 // Capture initial staleness snapshot
126 store.captureStalenessSnapshot(loadedPaths)
127
128 return store, nil
129}
130
131// mustMarshalConfig marshals the config to JSON bytes, returning empty JSON on
132// error.
133func mustMarshalConfig(cfg *Config) []byte {
134 data, err := json.Marshal(cfg)
135 if err != nil {
136 return []byte("{}")
137 }
138 return data
139}
140
141func PushPopCrushEnv() func() {
142 var found []string
143 for _, ev := range os.Environ() {
144 if strings.HasPrefix(ev, "CRUSH_") {
145 pair := strings.SplitN(ev, "=", 2)
146 if len(pair) != 2 {
147 continue
148 }
149 found = append(found, strings.TrimPrefix(pair[0], "CRUSH_"))
150 }
151 }
152 backups := make(map[string]string)
153 for _, ev := range found {
154 backups[ev] = os.Getenv(ev)
155 }
156
157 for _, ev := range found {
158 os.Setenv(ev, os.Getenv("CRUSH_"+ev))
159 }
160
161 restore := func() {
162 for k, v := range backups {
163 os.Setenv(k, v)
164 }
165 }
166 return restore
167}
168
169func (c *Config) configureProviders(store *ConfigStore, env env.Env, resolver VariableResolver, knownProviders []catwalk.Provider) error {
170 knownProviderNames := make(map[string]bool)
171 restore := PushPopCrushEnv()
172 defer restore()
173
174 // When disable_default_providers is enabled, skip all default/embedded
175 // providers entirely. Users must fully specify any providers they want.
176 // We skip to the custom provider validation loop which handles all
177 // user-configured providers uniformly.
178 if c.Options.DisableDefaultProviders {
179 knownProviders = nil
180 }
181
182 for _, p := range knownProviders {
183 knownProviderNames[string(p.ID)] = true
184 config, configExists := c.Providers.Get(string(p.ID))
185 // if the user configured a known provider we need to allow it to override a couple of parameters
186 if configExists {
187 if config.BaseURL != "" {
188 p.APIEndpoint = config.BaseURL
189 }
190 if config.APIKey != "" {
191 p.APIKey = config.APIKey
192 }
193 if len(config.Models) > 0 {
194 models := []catwalk.Model{}
195 seen := make(map[string]bool)
196
197 for _, model := range config.Models {
198 if seen[model.ID] {
199 continue
200 }
201 seen[model.ID] = true
202 if model.Name == "" {
203 model.Name = model.ID
204 }
205 models = append(models, model)
206 }
207 for _, model := range p.Models {
208 if seen[model.ID] {
209 continue
210 }
211 seen[model.ID] = true
212 if model.Name == "" {
213 model.Name = model.ID
214 }
215 models = append(models, model)
216 }
217
218 p.Models = models
219 }
220 }
221
222 headers := map[string]string{}
223 if len(p.DefaultHeaders) > 0 {
224 maps.Copy(headers, p.DefaultHeaders)
225 }
226 if len(config.ExtraHeaders) > 0 {
227 maps.Copy(headers, config.ExtraHeaders)
228 }
229 // Provider headers use the same error contract as MCP headers:
230 // a failing $(...) aborts the provider load with a clear
231 // message, and a header that resolves to the empty string
232 // (unset bare $VAR under lenient nounset, $(echo), or literal
233 // "") is dropped from the outgoing request. See PLAN.md
234 // Phase 2 design decisions #14 and #18.
235 for k, v := range headers {
236 resolved, err := resolver.ResolveValue(v)
237 if err != nil {
238 return fmt.Errorf("resolving provider %s header %q: %w", p.ID, k, err)
239 }
240 if resolved == "" {
241 delete(headers, k)
242 continue
243 }
244 headers[k] = resolved
245 }
246 prepared := ProviderConfig{
247 ID: string(p.ID),
248 Name: p.Name,
249 BaseURL: p.APIEndpoint,
250 APIKey: p.APIKey,
251 APIKeyTemplate: p.APIKey, // Store original template for re-resolution
252 OAuthToken: config.OAuthToken,
253 Type: p.Type,
254 Disable: config.Disable,
255 SystemPromptPrefix: config.SystemPromptPrefix,
256 ExtraHeaders: headers,
257 ExtraBody: config.ExtraBody,
258 ExtraParams: make(map[string]string),
259 Models: p.Models,
260 }
261
262 switch {
263 case p.ID == catwalk.InferenceProviderAnthropic && config.OAuthToken != nil:
264 // Claude Code subscription is not supported anymore. Remove to show onboarding.
265 if !store.reloadInProgress {
266 store.RemoveConfigField(ScopeGlobal, "providers.anthropic")
267 }
268 c.Providers.Del(string(p.ID))
269 continue
270 case p.ID == catwalk.InferenceProviderCopilot && config.OAuthToken != nil:
271 prepared.SetupGitHubCopilot()
272 }
273
274 switch p.ID {
275 // Handle specific providers that require additional configuration
276 case catwalk.InferenceProviderVertexAI:
277 var (
278 project = env.Get("VERTEXAI_PROJECT")
279 location = env.Get("VERTEXAI_LOCATION")
280 )
281 if project == "" || location == "" {
282 if configExists {
283 slog.Warn("Skipping Vertex AI provider due to missing credentials")
284 c.Providers.Del(string(p.ID))
285 }
286 continue
287 }
288 prepared.ExtraParams["project"] = project
289 prepared.ExtraParams["location"] = location
290 case catwalk.InferenceProviderAzure:
291 endpoint, err := resolver.ResolveValue(p.APIEndpoint)
292 if err != nil || endpoint == "" {
293 if configExists {
294 slog.Warn("Skipping Azure provider due to missing API endpoint", "provider", p.ID, "error", err)
295 c.Providers.Del(string(p.ID))
296 }
297 continue
298 }
299 prepared.BaseURL = endpoint
300 prepared.ExtraParams["apiVersion"] = env.Get("AZURE_OPENAI_API_VERSION")
301 case catwalk.InferenceProviderBedrock:
302 if !hasAWSCredentials(env) {
303 if configExists {
304 slog.Warn("Skipping Bedrock provider due to missing AWS credentials")
305 c.Providers.Del(string(p.ID))
306 }
307 continue
308 }
309 prepared.ExtraParams["region"] = env.Get("AWS_REGION")
310 if prepared.ExtraParams["region"] == "" {
311 prepared.ExtraParams["region"] = env.Get("AWS_DEFAULT_REGION")
312 }
313 for _, model := range p.Models {
314 if !strings.HasPrefix(model.ID, "anthropic.") {
315 return fmt.Errorf("bedrock provider only supports anthropic models for now, found: %s", model.ID)
316 }
317 }
318 case catwalk.InferenceProvider("hyper"):
319 if apiKey := env.Get("HYPER_API_KEY"); apiKey != "" {
320 prepared.APIKey = apiKey
321 prepared.APIKeyTemplate = apiKey
322 } else {
323 v, err := resolver.ResolveValue(p.APIKey)
324 if v == "" || err != nil {
325 if configExists {
326 slog.Warn("Skipping Hyper provider due to missing API key", "provider", p.ID)
327 c.Providers.Del(string(p.ID))
328 }
329 continue
330 }
331 }
332 default:
333 // if the provider api or endpoint are missing we skip them
334 v, err := resolver.ResolveValue(p.APIKey)
335 if v == "" || err != nil {
336 if configExists {
337 slog.Warn("Skipping provider due to missing API key", "provider", p.ID)
338 c.Providers.Del(string(p.ID))
339 }
340 continue
341 }
342 }
343 c.Providers.Set(string(p.ID), prepared)
344 }
345
346 // validate the custom providers
347 for id, providerConfig := range c.Providers.Seq2() {
348 if knownProviderNames[id] {
349 continue
350 }
351
352 // Make sure the provider ID is set
353 providerConfig.ID = id
354 providerConfig.Name = cmp.Or(providerConfig.Name, id) // Use ID as name if not set
355 // default to OpenAI if not set
356 providerConfig.Type = cmp.Or(providerConfig.Type, catwalk.TypeOpenAICompat)
357 if !slices.Contains(catwalk.KnownProviderTypes(), providerConfig.Type) && providerConfig.Type != hyper.Name {
358 slog.Warn("Skipping custom provider due to unsupported provider type", "provider", id)
359 c.Providers.Del(id)
360 continue
361 }
362
363 if providerConfig.Disable {
364 slog.Debug("Skipping custom provider due to disable flag", "provider", id)
365 c.Providers.Del(id)
366 continue
367 }
368 if providerConfig.APIKey == "" {
369 slog.Warn("Provider is missing API key, this might be OK for local providers", "provider", id)
370 }
371 if providerConfig.BaseURL == "" {
372 slog.Warn("Skipping custom provider due to missing API endpoint", "provider", id)
373 c.Providers.Del(id)
374 continue
375 }
376 if len(providerConfig.Models) == 0 {
377 slog.Warn("Skipping custom provider because the provider has no models", "provider", id)
378 c.Providers.Del(id)
379 continue
380 }
381 apiKey, err := resolver.ResolveValue(providerConfig.APIKey)
382 if apiKey == "" || err != nil {
383 slog.Warn("Provider is missing API key, this might be OK for local providers", "provider", id)
384 }
385 baseURL, err := resolver.ResolveValue(providerConfig.BaseURL)
386 if baseURL == "" || err != nil {
387 slog.Warn("Skipping custom provider due to missing API endpoint", "provider", id, "error", err)
388 c.Providers.Del(id)
389 continue
390 }
391
392 // Custom-provider headers share the MCP error contract; see
393 // the known-provider loop above and PLAN.md Phase 2 design
394 // decisions #14 and #18.
395 for k, v := range providerConfig.ExtraHeaders {
396 resolved, err := resolver.ResolveValue(v)
397 if err != nil {
398 return fmt.Errorf("resolving provider %s header %q: %w", id, k, err)
399 }
400 if resolved == "" {
401 delete(providerConfig.ExtraHeaders, k)
402 continue
403 }
404 providerConfig.ExtraHeaders[k] = resolved
405 }
406
407 c.Providers.Set(id, providerConfig)
408 }
409
410 if c.Providers.Len() == 0 && c.Options.DisableDefaultProviders {
411 return fmt.Errorf("default providers are disabled and there are no custom providers are configured")
412 }
413
414 return nil
415}
416
417func (c *Config) setDefaults(workingDir, dataDir string) {
418 if c.Options == nil {
419 c.Options = &Options{}
420 }
421 if c.Options.TUI == nil {
422 c.Options.TUI = &TUIOptions{}
423 }
424 if dataDir != "" {
425 c.Options.DataDirectory = dataDir
426 } else if c.Options.DataDirectory == "" {
427 if path, ok := fsext.LookupClosestBounded(workingDir, projectBoundary(workingDir), defaultDataDirectory); ok {
428 c.Options.DataDirectory = path
429 } else {
430 c.Options.DataDirectory = filepath.Join(workingDir, defaultDataDirectory)
431 }
432 }
433 c.Options.DataDirectory = filepath.Clean(filepathext.SmartJoin(workingDir, c.Options.DataDirectory))
434 if c.Providers == nil {
435 c.Providers = csync.NewMap[string, ProviderConfig]()
436 }
437 if c.Models == nil {
438 c.Models = make(map[SelectedModelType]SelectedModel)
439 }
440 if c.RecentModels == nil {
441 c.RecentModels = make(map[SelectedModelType][]SelectedModel)
442 }
443 if c.MCP == nil {
444 c.MCP = make(map[string]MCPConfig)
445 }
446 if c.LSP == nil {
447 c.LSP = make(map[string]LSPConfig)
448 }
449
450 // Apply defaults to LSP configurations
451 c.applyLSPDefaults()
452
453 // Add the default context paths if they are not already present
454 c.Options.ContextPaths = append(defaultContextPaths, c.Options.ContextPaths...)
455 slices.Sort(c.Options.ContextPaths)
456 c.Options.ContextPaths = slices.Compact(c.Options.ContextPaths)
457
458 // Add the default skills directories if not already present.
459 for _, dir := range GlobalSkillsDirs() {
460 if !slices.Contains(c.Options.SkillsPaths, dir) {
461 c.Options.SkillsPaths = append(c.Options.SkillsPaths, dir)
462 }
463 }
464
465 // Project specific skills dirs.
466 c.Options.SkillsPaths = append(c.Options.SkillsPaths, ProjectSkillsDir(workingDir)...)
467
468 if str, ok := os.LookupEnv("CRUSH_DISABLE_PROVIDER_AUTO_UPDATE"); ok {
469 c.Options.DisableProviderAutoUpdate, _ = strconv.ParseBool(str)
470 }
471
472 if str, ok := os.LookupEnv("CRUSH_DISABLE_DEFAULT_PROVIDERS"); ok {
473 c.Options.DisableDefaultProviders, _ = strconv.ParseBool(str)
474 }
475
476 if c.Options.Attribution == nil {
477 c.Options.Attribution = &Attribution{
478 TrailerStyle: TrailerStyleAssistedBy,
479 GeneratedWith: true,
480 }
481 } else if c.Options.Attribution.TrailerStyle == "" {
482 // Migrate deprecated co_authored_by or apply default
483 if c.Options.Attribution.CoAuthoredBy != nil {
484 if *c.Options.Attribution.CoAuthoredBy {
485 c.Options.Attribution.TrailerStyle = TrailerStyleCoAuthoredBy
486 } else {
487 c.Options.Attribution.TrailerStyle = TrailerStyleNone
488 }
489 } else {
490 c.Options.Attribution.TrailerStyle = TrailerStyleAssistedBy
491 }
492 }
493 c.Options.InitializeAs = cmp.Or(c.Options.InitializeAs, defaultInitializeAs)
494}
495
496// applyLSPDefaults applies default values from powernap to LSP configurations
497func (c *Config) applyLSPDefaults() {
498 // Get powernap's default configuration
499 configManager := powernapConfig.NewManager()
500 configManager.LoadDefaults()
501
502 // Apply defaults to each LSP configuration
503 for name, cfg := range c.LSP {
504 // Try to get defaults from powernap based on name or command name.
505 base, ok := configManager.GetServer(name)
506 if !ok {
507 base, ok = configManager.GetServer(cfg.Command)
508 if !ok {
509 continue
510 }
511 }
512 if cfg.Options == nil {
513 cfg.Options = base.Settings
514 }
515 if cfg.InitOptions == nil {
516 cfg.InitOptions = base.InitOptions
517 }
518 if len(cfg.FileTypes) == 0 {
519 cfg.FileTypes = base.FileTypes
520 }
521 if len(cfg.RootMarkers) == 0 {
522 cfg.RootMarkers = base.RootMarkers
523 }
524 cfg.Command = cmp.Or(cfg.Command, base.Command)
525 if len(cfg.Args) == 0 {
526 cfg.Args = base.Args
527 }
528 if len(cfg.Env) == 0 {
529 cfg.Env = base.Environment
530 }
531 // Update the config in the map
532 c.LSP[name] = cfg
533 }
534}
535
536func (c *Config) defaultModelSelection(knownProviders []catwalk.Provider) (largeModel SelectedModel, smallModel SelectedModel, err error) {
537 if len(knownProviders) == 0 && c.Providers.Len() == 0 {
538 err = fmt.Errorf("no providers configured, please configure at least one provider")
539 return largeModel, smallModel, err
540 }
541
542 // Use the first provider enabled based on the known providers order
543 // if no provider found that is known use the first provider configured
544 for _, p := range knownProviders {
545 providerConfig, ok := c.Providers.Get(string(p.ID))
546 if !ok || providerConfig.Disable {
547 continue
548 }
549 defaultLargeModel := c.GetModel(string(p.ID), p.DefaultLargeModelID)
550 if defaultLargeModel == nil {
551 err = fmt.Errorf("default large model %s not found for provider %s", p.DefaultLargeModelID, p.ID)
552 return largeModel, smallModel, err
553 }
554 largeModel = SelectedModel{
555 Provider: string(p.ID),
556 Model: defaultLargeModel.ID,
557 MaxTokens: defaultLargeModel.DefaultMaxTokens,
558 ReasoningEffort: defaultLargeModel.DefaultReasoningEffort,
559 }
560
561 defaultSmallModel := c.GetModel(string(p.ID), p.DefaultSmallModelID)
562 if defaultSmallModel == nil {
563 err = fmt.Errorf("default small model %s not found for provider %s", p.DefaultSmallModelID, p.ID)
564 return largeModel, smallModel, err
565 }
566 smallModel = SelectedModel{
567 Provider: string(p.ID),
568 Model: defaultSmallModel.ID,
569 MaxTokens: defaultSmallModel.DefaultMaxTokens,
570 ReasoningEffort: defaultSmallModel.DefaultReasoningEffort,
571 }
572 return largeModel, smallModel, err
573 }
574
575 enabledProviders := c.EnabledProviders()
576 slices.SortFunc(enabledProviders, func(a, b ProviderConfig) int {
577 return strings.Compare(a.ID, b.ID)
578 })
579
580 if len(enabledProviders) == 0 {
581 err = fmt.Errorf("no providers configured, please configure at least one provider")
582 return largeModel, smallModel, err
583 }
584
585 providerConfig := enabledProviders[0]
586 if len(providerConfig.Models) == 0 {
587 err = fmt.Errorf("provider %s has no models configured", providerConfig.ID)
588 return largeModel, smallModel, err
589 }
590 defaultLargeModel := c.GetModel(providerConfig.ID, providerConfig.Models[0].ID)
591 largeModel = SelectedModel{
592 Provider: providerConfig.ID,
593 Model: defaultLargeModel.ID,
594 MaxTokens: defaultLargeModel.DefaultMaxTokens,
595 }
596 defaultSmallModel := c.GetModel(providerConfig.ID, providerConfig.Models[0].ID)
597 smallModel = SelectedModel{
598 Provider: providerConfig.ID,
599 Model: defaultSmallModel.ID,
600 MaxTokens: defaultSmallModel.DefaultMaxTokens,
601 }
602 return largeModel, smallModel, err
603}
604
605func configureSelectedModels(store *ConfigStore, knownProviders []catwalk.Provider, persist bool) error {
606 c := store.config
607 defaultLarge, defaultSmall, err := c.defaultModelSelection(knownProviders)
608 if err != nil {
609 return fmt.Errorf("failed to select default models: %w", err)
610 }
611 large, small := defaultLarge, defaultSmall
612
613 largeModelSelected, largeModelConfigured := c.Models[SelectedModelTypeLarge]
614 if largeModelConfigured {
615 if largeModelSelected.Model != "" {
616 large.Model = largeModelSelected.Model
617 }
618 if largeModelSelected.Provider != "" {
619 large.Provider = largeModelSelected.Provider
620 }
621 model := c.GetModel(large.Provider, large.Model)
622 if model == nil {
623 large = defaultLarge
624 if persist {
625 if err := store.UpdatePreferredModel(ScopeGlobal, SelectedModelTypeLarge, large); err != nil {
626 return fmt.Errorf("failed to update preferred large model: %w", err)
627 }
628 }
629 } else {
630 if largeModelSelected.MaxTokens > 0 {
631 large.MaxTokens = largeModelSelected.MaxTokens
632 } else {
633 large.MaxTokens = model.DefaultMaxTokens
634 }
635 if largeModelSelected.ReasoningEffort != "" {
636 large.ReasoningEffort = largeModelSelected.ReasoningEffort
637 }
638 large.Think = largeModelSelected.Think
639 if largeModelSelected.Temperature != nil {
640 large.Temperature = largeModelSelected.Temperature
641 }
642 if largeModelSelected.TopP != nil {
643 large.TopP = largeModelSelected.TopP
644 }
645 if largeModelSelected.TopK != nil {
646 large.TopK = largeModelSelected.TopK
647 }
648 if largeModelSelected.FrequencyPenalty != nil {
649 large.FrequencyPenalty = largeModelSelected.FrequencyPenalty
650 }
651 if largeModelSelected.PresencePenalty != nil {
652 large.PresencePenalty = largeModelSelected.PresencePenalty
653 }
654 }
655 }
656 smallModelSelected, smallModelConfigured := c.Models[SelectedModelTypeSmall]
657 if smallModelConfigured {
658 if smallModelSelected.Model != "" {
659 small.Model = smallModelSelected.Model
660 }
661 if smallModelSelected.Provider != "" {
662 small.Provider = smallModelSelected.Provider
663 }
664
665 model := c.GetModel(small.Provider, small.Model)
666 if model == nil {
667 small = defaultSmall
668 if persist {
669 if err := store.UpdatePreferredModel(ScopeGlobal, SelectedModelTypeSmall, small); err != nil {
670 return fmt.Errorf("failed to update preferred small model: %w", err)
671 }
672 }
673 } else {
674 if smallModelSelected.MaxTokens > 0 {
675 small.MaxTokens = smallModelSelected.MaxTokens
676 } else {
677 small.MaxTokens = model.DefaultMaxTokens
678 }
679 if smallModelSelected.ReasoningEffort != "" {
680 small.ReasoningEffort = smallModelSelected.ReasoningEffort
681 }
682 if smallModelSelected.Temperature != nil {
683 small.Temperature = smallModelSelected.Temperature
684 }
685 if smallModelSelected.TopP != nil {
686 small.TopP = smallModelSelected.TopP
687 }
688 if smallModelSelected.TopK != nil {
689 small.TopK = smallModelSelected.TopK
690 }
691 if smallModelSelected.FrequencyPenalty != nil {
692 small.FrequencyPenalty = smallModelSelected.FrequencyPenalty
693 }
694 if smallModelSelected.PresencePenalty != nil {
695 small.PresencePenalty = smallModelSelected.PresencePenalty
696 }
697 small.Think = smallModelSelected.Think
698 }
699 }
700 c.Models[SelectedModelTypeLarge] = large
701 c.Models[SelectedModelTypeSmall] = small
702 return nil
703}
704
705// lookupConfigs searches config files starting at cwd and walking up
706// through the current project. The upward walk stops at the git
707// working tree root when one can be detected, otherwise at cwd itself,
708// so an unrelated crush.json placed above the project is never picked
709// up. Global user-level config locations are always included
710// regardless of the boundary.
711func lookupConfigs(cwd string) []string {
712 // prepend default config paths
713 configPaths := []string{
714 GlobalConfig(),
715 GlobalConfigData(),
716 }
717
718 configNames := []string{appName + ".json", "." + appName + ".json"}
719
720 foundConfigs, err := fsext.LookupBounded(cwd, projectBoundary(cwd), configNames...)
721 if err != nil {
722 // returns at least default configs
723 return configPaths
724 }
725
726 // reverse order so last config has more priority
727 slices.Reverse(foundConfigs)
728
729 return append(configPaths, foundConfigs...)
730}
731
732func loadFromConfigPaths(configPaths []string) (*Config, []string, error) {
733 var configs [][]byte
734 var loaded []string
735
736 for _, path := range configPaths {
737 data, err := os.ReadFile(path)
738 if err != nil {
739 if os.IsNotExist(err) {
740 continue
741 }
742 return nil, nil, fmt.Errorf("failed to open config file %s: %w", path, err)
743 }
744 if len(data) == 0 {
745 continue
746 }
747 if !json.Valid(data) {
748 return nil, nil, fmt.Errorf("invalid JSON in config file %s", path)
749 }
750 configs = append(configs, data)
751 loaded = append(loaded, path)
752 }
753
754 cfg, err := loadFromBytes(configs)
755 if err != nil {
756 return nil, nil, err
757 }
758 return cfg, loaded, nil
759}
760
761func loadFromBytes(configs [][]byte) (*Config, error) {
762 if len(configs) == 0 {
763 return &Config{}, nil
764 }
765
766 data, err := jsons.Merge(configs)
767 if err != nil {
768 return nil, err
769 }
770 var config Config
771 if err := json.Unmarshal(data, &config); err != nil {
772 return nil, err
773 }
774 return &config, nil
775}
776
777func hasAWSCredentials(env env.Env) bool {
778 if env.Get("AWS_BEARER_TOKEN_BEDROCK") != "" {
779 return true
780 }
781
782 if env.Get("AWS_ACCESS_KEY_ID") != "" && env.Get("AWS_SECRET_ACCESS_KEY") != "" {
783 return true
784 }
785
786 if env.Get("AWS_PROFILE") != "" || env.Get("AWS_DEFAULT_PROFILE") != "" {
787 return true
788 }
789
790 if env.Get("AWS_REGION") != "" || env.Get("AWS_DEFAULT_REGION") != "" {
791 return true
792 }
793
794 if env.Get("AWS_CONTAINER_CREDENTIALS_RELATIVE_URI") != "" ||
795 env.Get("AWS_CONTAINER_CREDENTIALS_FULL_URI") != "" {
796 return true
797 }
798
799 if _, err := os.Stat(filepath.Join(home.Dir(), ".aws/credentials")); err == nil && !testing.Testing() {
800 return true
801 }
802
803 return false
804}
805
806// GlobalConfig returns the global configuration file path for the application.
807func GlobalConfig() string {
808 if crushGlobal := os.Getenv("CRUSH_GLOBAL_CONFIG"); crushGlobal != "" {
809 return filepath.Join(crushGlobal, fmt.Sprintf("%s.json", appName))
810 }
811 return filepath.Join(home.Config(), appName, fmt.Sprintf("%s.json", appName))
812}
813
814// GlobalCacheDir returns the path to the global cache directory for the
815// application.
816func GlobalCacheDir() string {
817 if crushCache := os.Getenv("CRUSH_CACHE_DIR"); crushCache != "" {
818 return crushCache
819 }
820 if xdgCacheHome := os.Getenv("XDG_CACHE_HOME"); xdgCacheHome != "" {
821 return filepath.Join(xdgCacheHome, appName)
822 }
823 if runtime.GOOS == "windows" {
824 localAppData := cmp.Or(
825 os.Getenv("LOCALAPPDATA"),
826 filepath.Join(os.Getenv("USERPROFILE"), "AppData", "Local"),
827 )
828 return filepath.Join(localAppData, appName, "cache")
829 }
830 return filepath.Join(home.Dir(), ".cache", appName)
831}
832
833// GlobalConfigData returns the path to the main data directory for the application.
834// this config is used when the app overrides configurations instead of updating the global config.
835func GlobalConfigData() string {
836 if crushData := os.Getenv("CRUSH_GLOBAL_DATA"); crushData != "" {
837 return filepath.Join(crushData, fmt.Sprintf("%s.json", appName))
838 }
839 if xdgDataHome := os.Getenv("XDG_DATA_HOME"); xdgDataHome != "" {
840 return filepath.Join(xdgDataHome, appName, fmt.Sprintf("%s.json", appName))
841 }
842
843 // return the path to the main data directory
844 // for windows, it should be in `%LOCALAPPDATA%/crush/`
845 // for linux and macOS, it should be in `$HOME/.local/share/crush/`
846 if runtime.GOOS == "windows" {
847 localAppData := cmp.Or(
848 os.Getenv("LOCALAPPDATA"),
849 filepath.Join(os.Getenv("USERPROFILE"), "AppData", "Local"),
850 )
851 return filepath.Join(localAppData, appName, fmt.Sprintf("%s.json", appName))
852 }
853
854 return filepath.Join(home.Dir(), ".local", "share", appName, fmt.Sprintf("%s.json", appName))
855}
856
857// GlobalWorkspaceDir returns the path to the global server workspace
858// directory. This directory acts as a meta-workspace for the server
859// process, giving it a real workingDir so that config loading, scoped
860// writes, and provider resolution behave identically to project
861// workspaces.
862func GlobalWorkspaceDir() string {
863 return filepath.Dir(GlobalConfigData())
864}
865
866func assignIfNil[T any](ptr **T, val T) {
867 if *ptr == nil {
868 *ptr = &val
869 }
870}
871
872func isInsideWorktree() bool {
873 bts, err := exec.CommandContext(
874 context.Background(),
875 "git", "rev-parse",
876 "--is-inside-work-tree",
877 ).CombinedOutput()
878 return err == nil && strings.TrimSpace(string(bts)) == "true"
879}
880
881// worktreeRoot returns the absolute path of the git working tree root for
882// dir, or the empty string if dir is not inside a working tree (bare
883// repositories, missing git binary, plain directories, or any other
884// failure mode). Linked worktrees and submodules each report their own
885// top-level, which is what callers want when bounding lookups.
886func worktreeRoot(dir string) string {
887 cmd := exec.CommandContext(
888 context.Background(),
889 "git", "rev-parse", "--show-toplevel",
890 )
891 cmd.Dir = dir
892 out, err := cmd.Output()
893 if err != nil {
894 return ""
895 }
896 root := strings.TrimSpace(string(out))
897 if root == "" {
898 return ""
899 }
900 abs, err := filepath.Abs(root)
901 if err != nil {
902 return ""
903 }
904 return abs
905}
906
907// projectBoundary returns the directory at which an upward configuration
908// search rooted at dir should stop. It is the git working tree root when
909// one can be detected, otherwise dir itself. Returning dir as a
910// fallback keeps Crush from silently adopting state files placed above
911// the current project.
912func projectBoundary(dir string) string {
913 if root := worktreeRoot(dir); root != "" {
914 return root
915 }
916 abs, err := filepath.Abs(dir)
917 if err != nil {
918 return dir
919 }
920 return abs
921}
922
923// GlobalSkillsDirs returns the default directories for Agent Skills.
924// Skills in these directories are auto-discovered and their files can be read
925// without permission prompts.
926func GlobalSkillsDirs() []string {
927 if crushSkills := os.Getenv("CRUSH_SKILLS_DIR"); crushSkills != "" {
928 return []string{crushSkills}
929 }
930
931 paths := []string{
932 filepath.Join(home.Config(), appName, "skills"),
933 filepath.Join(home.Config(), "agents", "skills"),
934 }
935
936 // On Windows, also load from app data on top of `$HOME/.config/crush`.
937 // This is here mostly for backwards compatibility.
938 if runtime.GOOS == "windows" {
939 appData := cmp.Or(
940 os.Getenv("LOCALAPPDATA"),
941 filepath.Join(os.Getenv("USERPROFILE"), "AppData", "Local"),
942 )
943 paths = append(
944 paths,
945 filepath.Join(appData, appName, "skills"),
946 filepath.Join(appData, "agents", "skills"),
947 )
948 }
949
950 return paths
951}
952
953// ProjectSkillsDir returns the default project directories for which Crush
954// will look for skills.
955func ProjectSkillsDir(workingDir string) []string {
956 return []string{
957 filepath.Join(workingDir, ".agents/skills"),
958 filepath.Join(workingDir, ".crush/skills"),
959 filepath.Join(workingDir, ".claude/skills"),
960 filepath.Join(workingDir, ".cursor/skills"),
961 }
962}
963
964func isAppleTerminal() bool { return os.Getenv("TERM_PROGRAM") == "Apple_Terminal" }
965
966// normalizeHookEvent maps user-provided event names to their canonical
967// form. Matching is case-insensitive and accepts snake_case variants
968// (e.g. "pre_tool_use" → "PreToolUse").
969func normalizeHookEvent(name string) string {
970 switch strings.ToLower(strings.ReplaceAll(name, "_", "")) {
971 case "pretooluse":
972 return "PreToolUse"
973 default:
974 return name
975 }
976}
977
978// ValidateHooks normalizes event names and checks that every configured
979// hook has a command and a syntactically valid matcher regex. Matcher
980// compilation used for matching is owned by hooks.Runner; this function
981// only validates up front so the user sees config errors at load time
982// rather than on the first tool call.
983func (c *Config) ValidateHooks() error {
984 // Normalize event name keys.
985 for event, eventHooks := range c.Hooks {
986 canonical := normalizeHookEvent(event)
987 if canonical != event {
988 c.Hooks[canonical] = append(c.Hooks[canonical], eventHooks...)
989 delete(c.Hooks, event)
990 }
991 }
992
993 for event, eventHooks := range c.Hooks {
994 for i, h := range eventHooks {
995 if h.Command == "" {
996 return fmt.Errorf("hook %s[%d]: command is required", event, i)
997 }
998 if h.Matcher == "" {
999 continue
1000 }
1001 if _, err := regexp.Compile(h.Matcher); err != nil {
1002 return fmt.Errorf("hook %s[%d]: invalid matcher regex %q: %w", event, i, h.Matcher, err)
1003 }
1004 }
1005 }
1006 return nil
1007}