1package config
2
3import (
4 "context"
5 "encoding/json"
6 "fmt"
7 "io"
8 "os"
9 "path/filepath"
10 "runtime"
11 "slices"
12 "strings"
13 "time"
14
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 "github.com/charmbracelet/crush/internal/ollama"
20 "golang.org/x/exp/slog"
21)
22
23// LoadReader config via io.Reader.
24func LoadReader(fd io.Reader) (*Config, error) {
25 data, err := io.ReadAll(fd)
26 if err != nil {
27 return nil, err
28 }
29
30 var config Config
31 err = json.Unmarshal(data, &config)
32 if err != nil {
33 return nil, err
34 }
35 return &config, err
36}
37
38// Load loads the configuration from the default paths.
39func Load(workingDir string, debug bool) (*Config, error) {
40 // uses default config paths
41 configPaths := []string{
42 globalConfig(),
43 GlobalConfigData(),
44 filepath.Join(workingDir, fmt.Sprintf("%s.json", appName)),
45 filepath.Join(workingDir, fmt.Sprintf(".%s.json", appName)),
46 }
47 cfg, err := loadFromConfigPaths(configPaths)
48 if err != nil {
49 return nil, fmt.Errorf("failed to load config from paths %v: %w", configPaths, err)
50 }
51
52 cfg.dataConfigDir = GlobalConfigData()
53
54 cfg.setDefaults(workingDir)
55
56 if debug {
57 cfg.Options.Debug = true
58 }
59
60 // Setup logs
61 log.Setup(
62 filepath.Join(cfg.Options.DataDirectory, "logs", fmt.Sprintf("%s.log", appName)),
63 cfg.Options.Debug,
64 )
65
66 // Load known providers, this loads the config from fur
67 providers, err := LoadProviders(client.New())
68 if err != nil || len(providers) == 0 {
69 return nil, fmt.Errorf("failed to load providers: %w", err)
70 }
71 cfg.knownProviders = providers
72
73 env := env.New()
74 // Configure providers
75 valueResolver := NewShellVariableResolver(env)
76 cfg.resolver = valueResolver
77 if err := cfg.configureProviders(env, valueResolver, providers); err != nil {
78 return nil, fmt.Errorf("failed to configure providers: %w", err)
79 }
80
81 if !cfg.IsConfigured() {
82 slog.Warn("No providers configured")
83 return cfg, nil
84 }
85
86 if err := cfg.configureSelectedModels(providers); err != nil {
87 return nil, fmt.Errorf("failed to configure selected models: %w", err)
88 }
89 cfg.SetupAgents()
90 return cfg, nil
91}
92
93// convertOllamaModels converts ollama.ProviderModel to provider.Model
94func convertOllamaModels(ollamaModels []ollama.ProviderModel) []provider.Model {
95 providerModels := make([]provider.Model, len(ollamaModels))
96 for i, model := range ollamaModels {
97 providerModels[i] = provider.Model{
98 ID: model.ID,
99 Model: model.Model,
100 CostPer1MIn: model.CostPer1MIn,
101 CostPer1MOut: model.CostPer1MOut,
102 CostPer1MInCached: model.CostPer1MInCached,
103 CostPer1MOutCached: model.CostPer1MOutCached,
104 ContextWindow: model.ContextWindow,
105 DefaultMaxTokens: model.DefaultMaxTokens,
106 CanReason: model.CanReason,
107 HasReasoningEffort: model.HasReasoningEffort,
108 SupportsImages: model.SupportsImages,
109 }
110 }
111 return providerModels
112}
113
114func (cfg *Config) configureProviders(env env.Env, resolver VariableResolver, knownProviders []provider.Provider) error {
115 knownProviderNames := make(map[string]bool)
116 for _, p := range knownProviders {
117 knownProviderNames[string(p.ID)] = true
118 config, configExists := cfg.Providers[string(p.ID)]
119 // if the user configured a known provider we need to allow it to override a couple of parameters
120 if configExists {
121 if config.Disable {
122 slog.Debug("Skipping provider due to disable flag", "provider", p.ID)
123 delete(cfg.Providers, string(p.ID))
124 continue
125 }
126 if config.BaseURL != "" {
127 p.APIEndpoint = config.BaseURL
128 }
129 if config.APIKey != "" {
130 p.APIKey = config.APIKey
131 }
132 if len(config.Models) > 0 {
133 models := []provider.Model{}
134 seen := make(map[string]bool)
135
136 for _, model := range config.Models {
137 if seen[model.ID] {
138 continue
139 }
140 seen[model.ID] = true
141 if model.Model == "" {
142 model.Model = model.ID
143 }
144 models = append(models, model)
145 }
146 for _, model := range p.Models {
147 if seen[model.ID] {
148 continue
149 }
150 seen[model.ID] = true
151 if model.Model == "" {
152 model.Model = model.ID
153 }
154 models = append(models, model)
155 }
156
157 p.Models = models
158 }
159 }
160 prepared := ProviderConfig{
161 ID: string(p.ID),
162 Name: p.Name,
163 BaseURL: p.APIEndpoint,
164 APIKey: p.APIKey,
165 Type: p.Type,
166 Disable: config.Disable,
167 ExtraHeaders: config.ExtraHeaders,
168 ExtraParams: make(map[string]string),
169 Models: p.Models,
170 }
171
172 switch p.ID {
173 // Handle specific providers that require additional configuration
174 case provider.InferenceProviderVertexAI:
175 if !hasVertexCredentials(env) {
176 if configExists {
177 slog.Warn("Skipping Vertex AI provider due to missing credentials")
178 delete(cfg.Providers, string(p.ID))
179 }
180 continue
181 }
182 prepared.ExtraParams["project"] = env.Get("GOOGLE_CLOUD_PROJECT")
183 prepared.ExtraParams["location"] = env.Get("GOOGLE_CLOUD_LOCATION")
184 case provider.InferenceProviderBedrock:
185 if !hasAWSCredentials(env) {
186 if configExists {
187 slog.Warn("Skipping Bedrock provider due to missing AWS credentials")
188 delete(cfg.Providers, string(p.ID))
189 }
190 continue
191 }
192 for _, model := range p.Models {
193 if !strings.HasPrefix(model.ID, "anthropic.") {
194 return fmt.Errorf("bedrock provider only supports anthropic models for now, found: %s", model.ID)
195 }
196 }
197 default:
198 // if the provider api or endpoint are missing we skip them
199 v, err := resolver.ResolveValue(p.APIKey)
200 if v == "" || err != nil {
201 if configExists {
202 slog.Warn("Skipping provider due to missing API key", "provider", p.ID)
203 delete(cfg.Providers, string(p.ID))
204 }
205 continue
206 }
207 }
208 cfg.Providers[string(p.ID)] = prepared
209 }
210
211 // Auto-detect Ollama if it's available and not already configured
212 if _, exists := cfg.Providers["ollama"]; !exists {
213 ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
214 defer cancel()
215
216 // First try to get provider if Ollama is already running
217 if ollamaProvider, err := ollama.GetProvider(ctx); err == nil {
218 slog.Debug("Auto-detected running Ollama provider", "models", len(ollamaProvider.Models))
219 cfg.Providers["ollama"] = ProviderConfig{
220 ID: "ollama",
221 Name: "Ollama",
222 BaseURL: "http://localhost:11434/v1",
223 Type: provider.TypeOpenAI,
224 APIKey: "ollama",
225 Models: convertOllamaModels(ollamaProvider.Models),
226 }
227 } else {
228 // If Ollama is not running, try to start it
229 if err := ollama.EnsureRunning(ctx); err == nil {
230 // Now try to get the provider again
231 if ollamaProvider, err := ollama.GetProvider(ctx); err == nil {
232 slog.Debug("Started Ollama service and detected provider", "models", len(ollamaProvider.Models))
233 cfg.Providers["ollama"] = ProviderConfig{
234 ID: "ollama",
235 Name: "Ollama",
236 BaseURL: "http://localhost:11434/v1",
237 Type: provider.TypeOpenAI,
238 APIKey: "ollama",
239 Models: convertOllamaModels(ollamaProvider.Models),
240 }
241 } else {
242 slog.Debug("Started Ollama service but failed to get provider", "error", err)
243 }
244 } else {
245 slog.Debug("Failed to start Ollama service", "error", err)
246 }
247 }
248 }
249
250 // validate the custom providers
251 for id, providerConfig := range cfg.Providers {
252 if knownProviderNames[id] {
253 continue
254 }
255
256 // Make sure the provider ID is set
257 providerConfig.ID = id
258 if providerConfig.Name == "" {
259 providerConfig.Name = id // Use ID as name if not set
260 }
261 // default to OpenAI if not set
262 if providerConfig.Type == "" {
263 providerConfig.Type = provider.TypeOpenAI
264 }
265
266 if providerConfig.Disable {
267 slog.Debug("Skipping custom provider due to disable flag", "provider", id)
268 delete(cfg.Providers, id)
269 continue
270 }
271 if providerConfig.APIKey == "" {
272 slog.Warn("Provider is missing API key, this might be OK for local providers", "provider", id)
273 }
274 if providerConfig.BaseURL == "" {
275 slog.Warn("Skipping custom provider due to missing API endpoint", "provider", id)
276 delete(cfg.Providers, id)
277 continue
278 }
279 if len(providerConfig.Models) == 0 {
280 slog.Warn("Skipping custom provider because the provider has no models", "provider", id)
281 delete(cfg.Providers, id)
282 continue
283 }
284 if providerConfig.Type != provider.TypeOpenAI {
285 slog.Warn("Skipping custom provider because the provider type is not supported", "provider", id, "type", providerConfig.Type)
286 delete(cfg.Providers, id)
287 continue
288 }
289
290 apiKey, err := resolver.ResolveValue(providerConfig.APIKey)
291 if apiKey == "" || err != nil {
292 slog.Warn("Provider is missing API key, this might be OK for local providers", "provider", id)
293 }
294 baseURL, err := resolver.ResolveValue(providerConfig.BaseURL)
295 if baseURL == "" || err != nil {
296 slog.Warn("Skipping custom provider due to missing API endpoint", "provider", id, "error", err)
297 delete(cfg.Providers, id)
298 continue
299 }
300
301 cfg.Providers[id] = providerConfig
302 }
303 return nil
304}
305
306func (cfg *Config) setDefaults(workingDir string) {
307 cfg.workingDir = workingDir
308 if cfg.Options == nil {
309 cfg.Options = &Options{}
310 }
311 if cfg.Options.TUI == nil {
312 cfg.Options.TUI = &TUIOptions{}
313 }
314 if cfg.Options.ContextPaths == nil {
315 cfg.Options.ContextPaths = []string{}
316 }
317 if cfg.Options.DataDirectory == "" {
318 cfg.Options.DataDirectory = filepath.Join(workingDir, defaultDataDirectory)
319 }
320 if cfg.Providers == nil {
321 cfg.Providers = make(map[string]ProviderConfig)
322 }
323 if cfg.Models == nil {
324 cfg.Models = make(map[SelectedModelType]SelectedModel)
325 }
326 if cfg.MCP == nil {
327 cfg.MCP = make(map[string]MCPConfig)
328 }
329 if cfg.LSP == nil {
330 cfg.LSP = make(map[string]LSPConfig)
331 }
332
333 // Add the default context paths if they are not already present
334 cfg.Options.ContextPaths = append(defaultContextPaths, cfg.Options.ContextPaths...)
335 slices.Sort(cfg.Options.ContextPaths)
336 cfg.Options.ContextPaths = slices.Compact(cfg.Options.ContextPaths)
337}
338
339func (cfg *Config) defaultModelSelection(knownProviders []provider.Provider) (largeModel SelectedModel, smallModel SelectedModel, err error) {
340 if len(knownProviders) == 0 && len(cfg.Providers) == 0 {
341 err = fmt.Errorf("no providers configured, please configure at least one provider")
342 return
343 }
344
345 // Use the first provider enabled based on the known providers order
346 // if no provider found that is known use the first provider configured
347 for _, p := range knownProviders {
348 providerConfig, ok := cfg.Providers[string(p.ID)]
349 if !ok || providerConfig.Disable {
350 continue
351 }
352 defaultLargeModel := cfg.GetModel(string(p.ID), p.DefaultLargeModelID)
353 if defaultLargeModel == nil {
354 err = fmt.Errorf("default large model %s not found for provider %s", p.DefaultLargeModelID, p.ID)
355 return
356 }
357 largeModel = SelectedModel{
358 Provider: string(p.ID),
359 Model: defaultLargeModel.ID,
360 MaxTokens: defaultLargeModel.DefaultMaxTokens,
361 ReasoningEffort: defaultLargeModel.DefaultReasoningEffort,
362 }
363
364 defaultSmallModel := cfg.GetModel(string(p.ID), p.DefaultSmallModelID)
365 if defaultSmallModel == nil {
366 err = fmt.Errorf("default small model %s not found for provider %s", p.DefaultSmallModelID, p.ID)
367 return
368 }
369 smallModel = SelectedModel{
370 Provider: string(p.ID),
371 Model: defaultSmallModel.ID,
372 MaxTokens: defaultSmallModel.DefaultMaxTokens,
373 ReasoningEffort: defaultSmallModel.DefaultReasoningEffort,
374 }
375 return
376 }
377
378 enabledProviders := cfg.EnabledProviders()
379 slices.SortFunc(enabledProviders, func(a, b ProviderConfig) int {
380 return strings.Compare(a.ID, b.ID)
381 })
382
383 if len(enabledProviders) == 0 {
384 err = fmt.Errorf("no providers configured, please configure at least one provider")
385 return
386 }
387
388 providerConfig := enabledProviders[0]
389 if len(providerConfig.Models) == 0 {
390 err = fmt.Errorf("provider %s has no models configured", providerConfig.ID)
391 return
392 }
393 defaultLargeModel := cfg.GetModel(providerConfig.ID, providerConfig.Models[0].ID)
394 largeModel = SelectedModel{
395 Provider: providerConfig.ID,
396 Model: defaultLargeModel.ID,
397 MaxTokens: defaultLargeModel.DefaultMaxTokens,
398 }
399 defaultSmallModel := cfg.GetModel(providerConfig.ID, providerConfig.Models[0].ID)
400 smallModel = SelectedModel{
401 Provider: providerConfig.ID,
402 Model: defaultSmallModel.ID,
403 MaxTokens: defaultSmallModel.DefaultMaxTokens,
404 }
405 return
406}
407
408func (cfg *Config) configureSelectedModels(knownProviders []provider.Provider) error {
409 defaultLarge, defaultSmall, err := cfg.defaultModelSelection(knownProviders)
410 if err != nil {
411 return fmt.Errorf("failed to select default models: %w", err)
412 }
413 large, small := defaultLarge, defaultSmall
414
415 largeModelSelected, largeModelConfigured := cfg.Models[SelectedModelTypeLarge]
416 if largeModelConfigured {
417 if largeModelSelected.Model != "" {
418 large.Model = largeModelSelected.Model
419 }
420 if largeModelSelected.Provider != "" {
421 large.Provider = largeModelSelected.Provider
422 }
423 model := cfg.GetModel(large.Provider, large.Model)
424 if model == nil {
425 large = defaultLarge
426 // override the model type to large
427 err := cfg.UpdatePreferredModel(SelectedModelTypeLarge, large)
428 if err != nil {
429 return fmt.Errorf("failed to update preferred large model: %w", err)
430 }
431 } else {
432 if largeModelSelected.MaxTokens > 0 {
433 large.MaxTokens = largeModelSelected.MaxTokens
434 } else {
435 large.MaxTokens = model.DefaultMaxTokens
436 }
437 if largeModelSelected.ReasoningEffort != "" {
438 large.ReasoningEffort = largeModelSelected.ReasoningEffort
439 }
440 large.Think = largeModelSelected.Think
441 }
442 }
443 smallModelSelected, smallModelConfigured := cfg.Models[SelectedModelTypeSmall]
444 if smallModelConfigured {
445 if smallModelSelected.Model != "" {
446 small.Model = smallModelSelected.Model
447 }
448 if smallModelSelected.Provider != "" {
449 small.Provider = smallModelSelected.Provider
450 }
451
452 model := cfg.GetModel(small.Provider, small.Model)
453 if model == nil {
454 small = defaultSmall
455 // override the model type to small
456 err := cfg.UpdatePreferredModel(SelectedModelTypeSmall, small)
457 if err != nil {
458 return fmt.Errorf("failed to update preferred small model: %w", err)
459 }
460 } else {
461 if smallModelSelected.MaxTokens > 0 {
462 small.MaxTokens = smallModelSelected.MaxTokens
463 } else {
464 small.MaxTokens = model.DefaultMaxTokens
465 }
466 small.ReasoningEffort = smallModelSelected.ReasoningEffort
467 small.Think = smallModelSelected.Think
468 }
469 }
470 cfg.Models[SelectedModelTypeLarge] = large
471 cfg.Models[SelectedModelTypeSmall] = small
472 return nil
473}
474
475func loadFromConfigPaths(configPaths []string) (*Config, error) {
476 var configs []io.Reader
477
478 for _, path := range configPaths {
479 fd, err := os.Open(path)
480 if err != nil {
481 if os.IsNotExist(err) {
482 continue
483 }
484 return nil, fmt.Errorf("failed to open config file %s: %w", path, err)
485 }
486 defer fd.Close()
487
488 configs = append(configs, fd)
489 }
490
491 return loadFromReaders(configs)
492}
493
494func loadFromReaders(readers []io.Reader) (*Config, error) {
495 if len(readers) == 0 {
496 return &Config{}, nil
497 }
498
499 merged, err := Merge(readers)
500 if err != nil {
501 return nil, fmt.Errorf("failed to merge configuration readers: %w", err)
502 }
503
504 return LoadReader(merged)
505}
506
507func hasVertexCredentials(env env.Env) bool {
508 useVertex := env.Get("GOOGLE_GENAI_USE_VERTEXAI") == "true"
509 hasProject := env.Get("GOOGLE_CLOUD_PROJECT") != ""
510 hasLocation := env.Get("GOOGLE_CLOUD_LOCATION") != ""
511 return useVertex && hasProject && hasLocation
512}
513
514func hasAWSCredentials(env env.Env) bool {
515 if env.Get("AWS_ACCESS_KEY_ID") != "" && env.Get("AWS_SECRET_ACCESS_KEY") != "" {
516 return true
517 }
518
519 if env.Get("AWS_PROFILE") != "" || env.Get("AWS_DEFAULT_PROFILE") != "" {
520 return true
521 }
522
523 if env.Get("AWS_REGION") != "" || env.Get("AWS_DEFAULT_REGION") != "" {
524 return true
525 }
526
527 if env.Get("AWS_CONTAINER_CREDENTIALS_RELATIVE_URI") != "" ||
528 env.Get("AWS_CONTAINER_CREDENTIALS_FULL_URI") != "" {
529 return true
530 }
531
532 return false
533}
534
535func globalConfig() string {
536 xdgConfigHome := os.Getenv("XDG_CONFIG_HOME")
537 if xdgConfigHome != "" {
538 return filepath.Join(xdgConfigHome, appName, fmt.Sprintf("%s.json", appName))
539 }
540
541 // return the path to the main config directory
542 // for windows, it should be in `%LOCALAPPDATA%/crush/`
543 // for linux and macOS, it should be in `$HOME/.config/crush/`
544 if runtime.GOOS == "windows" {
545 localAppData := os.Getenv("LOCALAPPDATA")
546 if localAppData == "" {
547 localAppData = filepath.Join(os.Getenv("USERPROFILE"), "AppData", "Local")
548 }
549 return filepath.Join(localAppData, appName, fmt.Sprintf("%s.json", appName))
550 }
551
552 return filepath.Join(os.Getenv("HOME"), ".config", appName, fmt.Sprintf("%s.json", appName))
553}
554
555// GlobalConfigData returns the path to the main data directory for the application.
556// this config is used when the app overrides configurations instead of updating the global config.
557func GlobalConfigData() string {
558 xdgDataHome := os.Getenv("XDG_DATA_HOME")
559 if xdgDataHome != "" {
560 return filepath.Join(xdgDataHome, appName, fmt.Sprintf("%s.json", appName))
561 }
562
563 // return the path to the main data directory
564 // for windows, it should be in `%LOCALAPPDATA%/crush/`
565 // for linux and macOS, it should be in `$HOME/.local/share/crush/`
566 if runtime.GOOS == "windows" {
567 localAppData := os.Getenv("LOCALAPPDATA")
568 if localAppData == "" {
569 localAppData = filepath.Join(os.Getenv("USERPROFILE"), "AppData", "Local")
570 }
571 return filepath.Join(localAppData, appName, fmt.Sprintf("%s.json", appName))
572 }
573
574 return filepath.Join(os.Getenv("HOME"), ".local", "share", appName, fmt.Sprintf("%s.json", appName))
575}
576
577func HomeDir() string {
578 homeDir := os.Getenv("HOME")
579 if homeDir == "" {
580 homeDir = os.Getenv("USERPROFILE") // For Windows compatibility
581 }
582 if homeDir == "" {
583 homeDir = os.Getenv("HOMEPATH") // Fallback for some environments
584 }
585 return homeDir
586}