1package config
2
3import (
4 "encoding/json"
5 "fmt"
6 "io"
7 "os"
8 "path/filepath"
9 "runtime"
10 "slices"
11 "strings"
12 "sync"
13
14 "github.com/charmbracelet/crush/internal/csync"
15 "github.com/charmbracelet/crush/internal/env"
16 "github.com/charmbracelet/crush/internal/fur/client"
17 "github.com/charmbracelet/crush/internal/fur/provider"
18 "github.com/charmbracelet/crush/internal/log"
19 "golang.org/x/exp/slog"
20)
21
22// LoadReader config via io.Reader.
23func LoadReader(fd io.Reader) (*Config, error) {
24 data, err := io.ReadAll(fd)
25 if err != nil {
26 return nil, err
27 }
28
29 var config Config
30 err = json.Unmarshal(data, &config)
31 if err != nil {
32 return nil, err
33 }
34 return &config, err
35}
36
37// Load loads the configuration from the default paths.
38func Load(workingDir string, debug bool) (*Config, error) {
39 // uses default config paths
40 configPaths := []string{
41 globalConfig(),
42 GlobalConfigData(),
43 filepath.Join(workingDir, fmt.Sprintf("%s.json", appName)),
44 filepath.Join(workingDir, fmt.Sprintf(".%s.json", appName)),
45 }
46 cfg, err := loadFromConfigPaths(configPaths)
47 if err != nil {
48 return nil, fmt.Errorf("failed to load config from paths %v: %w", configPaths, err)
49 }
50
51 cfg.dataConfigDir = GlobalConfigData()
52
53 cfg.setDefaults(workingDir)
54
55 if debug {
56 cfg.Options.Debug = true
57 }
58
59 // Setup logs
60 log.Setup(
61 filepath.Join(cfg.Options.DataDirectory, "logs", fmt.Sprintf("%s.log", appName)),
62 cfg.Options.Debug,
63 )
64
65 // Load known providers, this loads the config from fur
66 providers, err := LoadProviders(client.New())
67 if err != nil || len(providers) == 0 {
68 return nil, fmt.Errorf("failed to load providers: %w", err)
69 }
70 cfg.knownProviders = providers
71
72 env := env.New()
73 // Configure providers
74 valueResolver := NewShellVariableResolver(env)
75 cfg.resolver = valueResolver
76 if err := cfg.configureProviders(env, valueResolver, providers); err != nil {
77 return nil, fmt.Errorf("failed to configure providers: %w", err)
78 }
79
80 go cfg.removeUnresponsiveProviders()
81
82 if !cfg.IsConfigured() {
83 slog.Warn("No providers configured")
84 return cfg, nil
85 }
86
87 if err := cfg.configureSelectedModels(providers); err != nil {
88 return nil, fmt.Errorf("failed to configure selected models: %w", err)
89 }
90 cfg.SetupAgents()
91 return cfg, nil
92}
93
94func (c *Config) removeUnresponsiveProviders() {
95 // Test provider connections in parallel
96 var testResults sync.Map
97 var wg sync.WaitGroup
98 slog.Info("Testing provider connections")
99 defer slog.Info("Provider connection tests completed")
100 for _, p := range c.Providers.Seq2() {
101 if p.Type == provider.TypeOpenAI || p.Type == provider.TypeAnthropic {
102 wg.Add(1)
103 go func(provider ProviderConfig) {
104 defer wg.Done()
105 err := provider.TestConnection(c.resolver)
106 testResults.Store(provider.ID, err == nil)
107 if err != nil {
108 slog.Error("Provider connection test failed", "provider", provider.ID, "error", err)
109 }
110 }(p)
111 }
112 }
113 wg.Wait()
114
115 // Remove failed providers
116 testResults.Range(func(key, value any) bool {
117 providerID := key.(string)
118 passed := value.(bool)
119 if !passed {
120 c.Providers.Del(providerID)
121 }
122 return true
123 })
124}
125
126func (c *Config) configureProviders(env env.Env, resolver VariableResolver, knownProviders []provider.Provider) error {
127 knownProviderNames := make(map[string]bool)
128 for _, p := range knownProviders {
129 knownProviderNames[string(p.ID)] = true
130 config, configExists := c.Providers.Get(string(p.ID))
131 // if the user configured a known provider we need to allow it to override a couple of parameters
132 if configExists {
133 if config.Disable {
134 slog.Debug("Skipping provider due to disable flag", "provider", p.ID)
135 c.Providers.Del(string(p.ID))
136 continue
137 }
138 if config.BaseURL != "" {
139 p.APIEndpoint = config.BaseURL
140 }
141 if config.APIKey != "" {
142 p.APIKey = config.APIKey
143 }
144 if len(config.Models) > 0 {
145 models := []provider.Model{}
146 seen := make(map[string]bool)
147
148 for _, model := range config.Models {
149 if seen[model.ID] {
150 continue
151 }
152 seen[model.ID] = true
153 if model.Model == "" {
154 model.Model = model.ID
155 }
156 models = append(models, model)
157 }
158 for _, model := range p.Models {
159 if seen[model.ID] {
160 continue
161 }
162 seen[model.ID] = true
163 if model.Model == "" {
164 model.Model = model.ID
165 }
166 models = append(models, model)
167 }
168
169 p.Models = models
170 }
171 }
172 prepared := ProviderConfig{
173 ID: string(p.ID),
174 Name: p.Name,
175 BaseURL: p.APIEndpoint,
176 APIKey: p.APIKey,
177 Type: p.Type,
178 Disable: config.Disable,
179 ExtraHeaders: config.ExtraHeaders,
180 ExtraBody: config.ExtraBody,
181 ExtraParams: make(map[string]string),
182 Models: p.Models,
183 }
184
185 switch p.ID {
186 // Handle specific providers that require additional configuration
187 case provider.InferenceProviderVertexAI:
188 if !hasVertexCredentials(env) {
189 if configExists {
190 slog.Warn("Skipping Vertex AI provider due to missing credentials")
191 c.Providers.Del(string(p.ID))
192 }
193 continue
194 }
195 prepared.ExtraParams["project"] = env.Get("GOOGLE_CLOUD_PROJECT")
196 prepared.ExtraParams["location"] = env.Get("GOOGLE_CLOUD_LOCATION")
197 case provider.InferenceProviderAzure:
198 endpoint, err := resolver.ResolveValue(p.APIEndpoint)
199 if err != nil || endpoint == "" {
200 if configExists {
201 slog.Warn("Skipping Azure provider due to missing API endpoint", "provider", p.ID, "error", err)
202 c.Providers.Del(string(p.ID))
203 }
204 continue
205 }
206 prepared.BaseURL = endpoint
207 prepared.ExtraParams["apiVersion"] = env.Get("AZURE_OPENAI_API_VERSION")
208 case provider.InferenceProviderBedrock:
209 if !hasAWSCredentials(env) {
210 if configExists {
211 slog.Warn("Skipping Bedrock provider due to missing AWS credentials")
212 c.Providers.Del(string(p.ID))
213 }
214 continue
215 }
216 for _, model := range p.Models {
217 if !strings.HasPrefix(model.ID, "anthropic.") {
218 return fmt.Errorf("bedrock provider only supports anthropic models for now, found: %s", model.ID)
219 }
220 }
221 default:
222 // if the provider api or endpoint are missing we skip them
223 v, err := resolver.ResolveValue(p.APIKey)
224 if v == "" || err != nil {
225 if configExists {
226 slog.Warn("Skipping provider due to missing API key", "provider", p.ID)
227 c.Providers.Del(string(p.ID))
228 }
229 continue
230 }
231 }
232 c.Providers.Set(string(p.ID), prepared)
233 }
234
235 // validate the custom providers
236 for id, providerConfig := range c.Providers.Seq2() {
237 if knownProviderNames[id] {
238 continue
239 }
240
241 // Make sure the provider ID is set
242 providerConfig.ID = id
243 if providerConfig.Name == "" {
244 providerConfig.Name = id // Use ID as name if not set
245 }
246 // default to OpenAI if not set
247 if providerConfig.Type == "" {
248 providerConfig.Type = provider.TypeOpenAI
249 }
250
251 if providerConfig.Disable {
252 slog.Debug("Skipping custom provider due to disable flag", "provider", id)
253 c.Providers.Del(id)
254 continue
255 }
256 if providerConfig.APIKey == "" {
257 slog.Warn("Provider is missing API key, this might be OK for local providers", "provider", id)
258 }
259 if providerConfig.BaseURL == "" {
260 slog.Warn("Skipping custom provider due to missing API endpoint", "provider", id)
261 c.Providers.Del(id)
262 continue
263 }
264 if len(providerConfig.Models) == 0 {
265 slog.Warn("Skipping custom provider because the provider has no models", "provider", id)
266 c.Providers.Del(id)
267 continue
268 }
269 if providerConfig.Type != provider.TypeOpenAI {
270 slog.Warn("Skipping custom provider because the provider type is not supported", "provider", id, "type", providerConfig.Type)
271 c.Providers.Del(id)
272 continue
273 }
274
275 apiKey, err := resolver.ResolveValue(providerConfig.APIKey)
276 if apiKey == "" || err != nil {
277 slog.Warn("Provider is missing API key, this might be OK for local providers", "provider", id)
278 }
279 baseURL, err := resolver.ResolveValue(providerConfig.BaseURL)
280 if baseURL == "" || err != nil {
281 slog.Warn("Skipping custom provider due to missing API endpoint", "provider", id, "error", err)
282 c.Providers.Del(id)
283 continue
284 }
285
286 c.Providers.Set(id, providerConfig)
287 }
288 return nil
289}
290
291func (c *Config) setDefaults(workingDir string) {
292 c.workingDir = workingDir
293 if c.Options == nil {
294 c.Options = &Options{}
295 }
296 if c.Options.TUI == nil {
297 c.Options.TUI = &TUIOptions{}
298 }
299 if c.Options.ContextPaths == nil {
300 c.Options.ContextPaths = []string{}
301 }
302 if c.Options.DataDirectory == "" {
303 c.Options.DataDirectory = filepath.Join(workingDir, defaultDataDirectory)
304 }
305 if c.Providers == nil {
306 c.Providers = csync.NewMap[string, ProviderConfig]()
307 }
308 if c.Models == nil {
309 c.Models = make(map[SelectedModelType]SelectedModel)
310 }
311 if c.MCP == nil {
312 c.MCP = make(map[string]MCPConfig)
313 }
314 if c.LSP == nil {
315 c.LSP = make(map[string]LSPConfig)
316 }
317
318 // Add the default context paths if they are not already present
319 c.Options.ContextPaths = append(defaultContextPaths, c.Options.ContextPaths...)
320 slices.Sort(c.Options.ContextPaths)
321 c.Options.ContextPaths = slices.Compact(c.Options.ContextPaths)
322}
323
324func (c *Config) defaultModelSelection(knownProviders []provider.Provider) (largeModel SelectedModel, smallModel SelectedModel, err error) {
325 if len(knownProviders) == 0 && c.Providers.Len() == 0 {
326 err = fmt.Errorf("no providers configured, please configure at least one provider")
327 return
328 }
329
330 // Use the first provider enabled based on the known providers order
331 // if no provider found that is known use the first provider configured
332 for _, p := range knownProviders {
333 providerConfig, ok := c.Providers.Get(string(p.ID))
334 if !ok || providerConfig.Disable {
335 continue
336 }
337 defaultLargeModel := c.GetModel(string(p.ID), p.DefaultLargeModelID)
338 if defaultLargeModel == nil {
339 err = fmt.Errorf("default large model %s not found for provider %s", p.DefaultLargeModelID, p.ID)
340 return
341 }
342 largeModel = SelectedModel{
343 Provider: string(p.ID),
344 Model: defaultLargeModel.ID,
345 MaxTokens: defaultLargeModel.DefaultMaxTokens,
346 ReasoningEffort: defaultLargeModel.DefaultReasoningEffort,
347 }
348
349 defaultSmallModel := c.GetModel(string(p.ID), p.DefaultSmallModelID)
350 if defaultSmallModel == nil {
351 err = fmt.Errorf("default small model %s not found for provider %s", p.DefaultSmallModelID, p.ID)
352 return
353 }
354 smallModel = SelectedModel{
355 Provider: string(p.ID),
356 Model: defaultSmallModel.ID,
357 MaxTokens: defaultSmallModel.DefaultMaxTokens,
358 ReasoningEffort: defaultSmallModel.DefaultReasoningEffort,
359 }
360 return
361 }
362
363 enabledProviders := c.EnabledProviders()
364 slices.SortFunc(enabledProviders, func(a, b ProviderConfig) int {
365 return strings.Compare(a.ID, b.ID)
366 })
367
368 if len(enabledProviders) == 0 {
369 err = fmt.Errorf("no providers configured, please configure at least one provider")
370 return
371 }
372
373 providerConfig := enabledProviders[0]
374 if len(providerConfig.Models) == 0 {
375 err = fmt.Errorf("provider %s has no models configured", providerConfig.ID)
376 return
377 }
378 defaultLargeModel := c.GetModel(providerConfig.ID, providerConfig.Models[0].ID)
379 largeModel = SelectedModel{
380 Provider: providerConfig.ID,
381 Model: defaultLargeModel.ID,
382 MaxTokens: defaultLargeModel.DefaultMaxTokens,
383 }
384 defaultSmallModel := c.GetModel(providerConfig.ID, providerConfig.Models[0].ID)
385 smallModel = SelectedModel{
386 Provider: providerConfig.ID,
387 Model: defaultSmallModel.ID,
388 MaxTokens: defaultSmallModel.DefaultMaxTokens,
389 }
390 return
391}
392
393func (c *Config) configureSelectedModels(knownProviders []provider.Provider) error {
394 defaultLarge, defaultSmall, err := c.defaultModelSelection(knownProviders)
395 if err != nil {
396 return fmt.Errorf("failed to select default models: %w", err)
397 }
398 large, small := defaultLarge, defaultSmall
399
400 largeModelSelected, largeModelConfigured := c.Models[SelectedModelTypeLarge]
401 if largeModelConfigured {
402 if largeModelSelected.Model != "" {
403 large.Model = largeModelSelected.Model
404 }
405 if largeModelSelected.Provider != "" {
406 large.Provider = largeModelSelected.Provider
407 }
408 model := c.GetModel(large.Provider, large.Model)
409 if model == nil {
410 large = defaultLarge
411 // override the model type to large
412 err := c.UpdatePreferredModel(SelectedModelTypeLarge, large)
413 if err != nil {
414 return fmt.Errorf("failed to update preferred large model: %w", err)
415 }
416 } else {
417 if largeModelSelected.MaxTokens > 0 {
418 large.MaxTokens = largeModelSelected.MaxTokens
419 } else {
420 large.MaxTokens = model.DefaultMaxTokens
421 }
422 if largeModelSelected.ReasoningEffort != "" {
423 large.ReasoningEffort = largeModelSelected.ReasoningEffort
424 }
425 large.Think = largeModelSelected.Think
426 }
427 }
428 smallModelSelected, smallModelConfigured := c.Models[SelectedModelTypeSmall]
429 if smallModelConfigured {
430 if smallModelSelected.Model != "" {
431 small.Model = smallModelSelected.Model
432 }
433 if smallModelSelected.Provider != "" {
434 small.Provider = smallModelSelected.Provider
435 }
436
437 model := c.GetModel(small.Provider, small.Model)
438 if model == nil {
439 small = defaultSmall
440 // override the model type to small
441 err := c.UpdatePreferredModel(SelectedModelTypeSmall, small)
442 if err != nil {
443 return fmt.Errorf("failed to update preferred small model: %w", err)
444 }
445 } else {
446 if smallModelSelected.MaxTokens > 0 {
447 small.MaxTokens = smallModelSelected.MaxTokens
448 } else {
449 small.MaxTokens = model.DefaultMaxTokens
450 }
451 small.ReasoningEffort = smallModelSelected.ReasoningEffort
452 small.Think = smallModelSelected.Think
453 }
454 }
455 c.Models[SelectedModelTypeLarge] = large
456 c.Models[SelectedModelTypeSmall] = small
457 return nil
458}
459
460func loadFromConfigPaths(configPaths []string) (*Config, error) {
461 var configs []io.Reader
462
463 for _, path := range configPaths {
464 fd, err := os.Open(path)
465 if err != nil {
466 if os.IsNotExist(err) {
467 continue
468 }
469 return nil, fmt.Errorf("failed to open config file %s: %w", path, err)
470 }
471 defer fd.Close()
472
473 configs = append(configs, fd)
474 }
475
476 return loadFromReaders(configs)
477}
478
479func loadFromReaders(readers []io.Reader) (*Config, error) {
480 if len(readers) == 0 {
481 return &Config{}, nil
482 }
483
484 merged, err := Merge(readers)
485 if err != nil {
486 return nil, fmt.Errorf("failed to merge configuration readers: %w", err)
487 }
488
489 return LoadReader(merged)
490}
491
492func hasVertexCredentials(env env.Env) bool {
493 useVertex := env.Get("GOOGLE_GENAI_USE_VERTEXAI") == "true"
494 hasProject := env.Get("GOOGLE_CLOUD_PROJECT") != ""
495 hasLocation := env.Get("GOOGLE_CLOUD_LOCATION") != ""
496 return useVertex && hasProject && hasLocation
497}
498
499func hasAWSCredentials(env env.Env) bool {
500 if env.Get("AWS_ACCESS_KEY_ID") != "" && env.Get("AWS_SECRET_ACCESS_KEY") != "" {
501 return true
502 }
503
504 if env.Get("AWS_PROFILE") != "" || env.Get("AWS_DEFAULT_PROFILE") != "" {
505 return true
506 }
507
508 if env.Get("AWS_REGION") != "" || env.Get("AWS_DEFAULT_REGION") != "" {
509 return true
510 }
511
512 if env.Get("AWS_CONTAINER_CREDENTIALS_RELATIVE_URI") != "" ||
513 env.Get("AWS_CONTAINER_CREDENTIALS_FULL_URI") != "" {
514 return true
515 }
516
517 return false
518}
519
520func globalConfig() string {
521 xdgConfigHome := os.Getenv("XDG_CONFIG_HOME")
522 if xdgConfigHome != "" {
523 return filepath.Join(xdgConfigHome, appName, fmt.Sprintf("%s.json", appName))
524 }
525
526 // return the path to the main config directory
527 // for windows, it should be in `%LOCALAPPDATA%/crush/`
528 // for linux and macOS, it should be in `$HOME/.config/crush/`
529 if runtime.GOOS == "windows" {
530 localAppData := os.Getenv("LOCALAPPDATA")
531 if localAppData == "" {
532 localAppData = filepath.Join(os.Getenv("USERPROFILE"), "AppData", "Local")
533 }
534 return filepath.Join(localAppData, appName, fmt.Sprintf("%s.json", appName))
535 }
536
537 return filepath.Join(os.Getenv("HOME"), ".config", appName, fmt.Sprintf("%s.json", appName))
538}
539
540// GlobalConfigData returns the path to the main data directory for the application.
541// this config is used when the app overrides configurations instead of updating the global config.
542func GlobalConfigData() string {
543 xdgDataHome := os.Getenv("XDG_DATA_HOME")
544 if xdgDataHome != "" {
545 return filepath.Join(xdgDataHome, appName, fmt.Sprintf("%s.json", appName))
546 }
547
548 // return the path to the main data directory
549 // for windows, it should be in `%LOCALAPPDATA%/crush/`
550 // for linux and macOS, it should be in `$HOME/.local/share/crush/`
551 if runtime.GOOS == "windows" {
552 localAppData := os.Getenv("LOCALAPPDATA")
553 if localAppData == "" {
554 localAppData = filepath.Join(os.Getenv("USERPROFILE"), "AppData", "Local")
555 }
556 return filepath.Join(localAppData, appName, fmt.Sprintf("%s.json", appName))
557 }
558
559 return filepath.Join(os.Getenv("HOME"), ".local", "share", appName, fmt.Sprintf("%s.json", appName))
560}
561
562func HomeDir() string {
563 homeDir := os.Getenv("HOME")
564 if homeDir == "" {
565 homeDir = os.Getenv("USERPROFILE") // For Windows compatibility
566 }
567 if homeDir == "" {
568 homeDir = os.Getenv("HOMEPATH") // Fallback for some environments
569 }
570 return homeDir
571}