1package config
  2
  3import (
  4	"cmp"
  5	"context"
  6	"encoding/json"
  7	"fmt"
  8	"io"
  9	"log/slog"
 10	"maps"
 11	"os"
 12	"os/exec"
 13	"path/filepath"
 14	"runtime"
 15	"slices"
 16	"strconv"
 17	"strings"
 18	"testing"
 19
 20	"git.secluded.site/crush/internal/agent/hyper"
 21	"git.secluded.site/crush/internal/csync"
 22	"git.secluded.site/crush/internal/env"
 23	"git.secluded.site/crush/internal/fsext"
 24	"git.secluded.site/crush/internal/home"
 25	"git.secluded.site/crush/internal/log"
 26	"github.com/charmbracelet/catwalk/pkg/catwalk"
 27	powernapConfig "github.com/charmbracelet/x/powernap/pkg/config"
 28)
 29
 30const defaultCatwalkURL = "https://catwalk.charm.sh"
 31
 32// LoadReader config via io.Reader.
 33func LoadReader(fd io.Reader) (*Config, error) {
 34	data, err := io.ReadAll(fd)
 35	if err != nil {
 36		return nil, err
 37	}
 38
 39	var config Config
 40	err = json.Unmarshal(data, &config)
 41	if err != nil {
 42		return nil, err
 43	}
 44	return &config, err
 45}
 46
 47// Load loads the configuration from the default paths.
 48func Load(workingDir, dataDir string, debug bool) (*Config, error) {
 49	configPaths := lookupConfigs(workingDir)
 50
 51	cfg, err := loadFromConfigPaths(configPaths)
 52	if err != nil {
 53		return nil, fmt.Errorf("failed to load config from paths %v: %w", configPaths, err)
 54	}
 55
 56	cfg.dataConfigDir = GlobalConfigData()
 57
 58	cfg.setDefaults(workingDir, dataDir)
 59
 60	if debug {
 61		cfg.Options.Debug = true
 62	}
 63
 64	// Setup logs
 65	log.Setup(
 66		filepath.Join(cfg.Options.DataDirectory, "logs", fmt.Sprintf("%s.log", appName)),
 67		cfg.Options.Debug,
 68	)
 69
 70	if !isInsideWorktree() {
 71		const depth = 2
 72		const items = 100
 73		slog.Warn("No git repository detected in working directory, will limit file walk operations", "depth", depth, "items", items)
 74		assignIfNil(&cfg.Tools.Ls.MaxDepth, depth)
 75		assignIfNil(&cfg.Tools.Ls.MaxItems, items)
 76		assignIfNil(&cfg.Options.TUI.Completions.MaxDepth, depth)
 77		assignIfNil(&cfg.Options.TUI.Completions.MaxItems, items)
 78	}
 79
 80	// Load known providers, this loads the config from catwalk
 81	providers, err := Providers(cfg)
 82	if err != nil {
 83		return nil, err
 84	}
 85	cfg.knownProviders = providers
 86
 87	env := env.New()
 88	// Configure providers
 89	valueResolver := NewShellVariableResolver(env)
 90	cfg.resolver = valueResolver
 91	if err := cfg.configureProviders(env, valueResolver, cfg.knownProviders); err != nil {
 92		return nil, fmt.Errorf("failed to configure providers: %w", err)
 93	}
 94
 95	if !cfg.IsConfigured() {
 96		slog.Warn("No providers configured")
 97		return cfg, nil
 98	}
 99
100	if err := cfg.configureSelectedModels(cfg.knownProviders); err != nil {
101		return nil, fmt.Errorf("failed to configure selected models: %w", err)
102	}
103	cfg.SetupAgents()
104	return cfg, nil
105}
106
107func PushPopCrushEnv() func() {
108	found := []string{}
109	for _, ev := range os.Environ() {
110		if strings.HasPrefix(ev, "CRUSH_") {
111			pair := strings.SplitN(ev, "=", 2)
112			if len(pair) != 2 {
113				continue
114			}
115			found = append(found, strings.TrimPrefix(pair[0], "CRUSH_"))
116		}
117	}
118	backups := make(map[string]string)
119	for _, ev := range found {
120		backups[ev] = os.Getenv(ev)
121	}
122
123	for _, ev := range found {
124		os.Setenv(ev, os.Getenv("CRUSH_"+ev))
125	}
126
127	restore := func() {
128		for k, v := range backups {
129			os.Setenv(k, v)
130		}
131	}
132	return restore
133}
134
135func (c *Config) configureProviders(env env.Env, resolver VariableResolver, knownProviders []catwalk.Provider) error {
136	knownProviderNames := make(map[string]bool)
137	restore := PushPopCrushEnv()
138	defer restore()
139
140	for _, p := range knownProviders {
141		knownProviderNames[string(p.ID)] = true
142		config, configExists := c.Providers.Get(string(p.ID))
143		// if the user configured a known provider we need to allow it to override a couple of parameters
144		if configExists {
145			if config.BaseURL != "" {
146				p.APIEndpoint = config.BaseURL
147			}
148			if config.APIKey != "" {
149				p.APIKey = config.APIKey
150			}
151			if len(config.Models) > 0 {
152				models := []catwalk.Model{}
153				seen := make(map[string]bool)
154
155				for _, model := range config.Models {
156					if seen[model.ID] {
157						continue
158					}
159					seen[model.ID] = true
160					if model.Name == "" {
161						model.Name = model.ID
162					}
163					models = append(models, model)
164				}
165				for _, model := range p.Models {
166					if seen[model.ID] {
167						continue
168					}
169					seen[model.ID] = true
170					if model.Name == "" {
171						model.Name = model.ID
172					}
173					models = append(models, model)
174				}
175
176				p.Models = models
177			}
178		}
179
180		headers := map[string]string{}
181		if len(p.DefaultHeaders) > 0 {
182			maps.Copy(headers, p.DefaultHeaders)
183		}
184		if len(config.ExtraHeaders) > 0 {
185			maps.Copy(headers, config.ExtraHeaders)
186		}
187		prepared := ProviderConfig{
188			ID:                 string(p.ID),
189			Name:               p.Name,
190			BaseURL:            p.APIEndpoint,
191			APIKey:             p.APIKey,
192			APIKeyTemplate:     p.APIKey, // Store original template for re-resolution
193			OAuthToken:         config.OAuthToken,
194			Type:               p.Type,
195			Disable:            config.Disable,
196			SystemPromptPrefix: config.SystemPromptPrefix,
197			ExtraHeaders:       headers,
198			ExtraBody:          config.ExtraBody,
199			ExtraParams:        make(map[string]string),
200			Models:             p.Models,
201		}
202
203		switch {
204		case p.ID == catwalk.InferenceProviderAnthropic && config.OAuthToken != nil:
205			prepared.SetupClaudeCode()
206		case p.ID == catwalk.InferenceProviderCopilot:
207			if config.OAuthToken != nil {
208				prepared.SetupGitHubCopilot()
209			}
210		}
211
212		switch p.ID {
213		// Handle specific providers that require additional configuration
214		case catwalk.InferenceProviderVertexAI:
215			if !hasVertexCredentials(env) {
216				if configExists {
217					slog.Warn("Skipping Vertex AI provider due to missing credentials")
218					c.Providers.Del(string(p.ID))
219				}
220				continue
221			}
222			prepared.ExtraParams["project"] = env.Get("VERTEXAI_PROJECT")
223			prepared.ExtraParams["location"] = env.Get("VERTEXAI_LOCATION")
224		case catwalk.InferenceProviderAzure:
225			endpoint, err := resolver.ResolveValue(p.APIEndpoint)
226			if err != nil || endpoint == "" {
227				if configExists {
228					slog.Warn("Skipping Azure provider due to missing API endpoint", "provider", p.ID, "error", err)
229					c.Providers.Del(string(p.ID))
230				}
231				continue
232			}
233			prepared.BaseURL = endpoint
234			prepared.ExtraParams["apiVersion"] = env.Get("AZURE_OPENAI_API_VERSION")
235		case catwalk.InferenceProviderBedrock:
236			if !hasAWSCredentials(env) {
237				if configExists {
238					slog.Warn("Skipping Bedrock provider due to missing AWS credentials")
239					c.Providers.Del(string(p.ID))
240				}
241				continue
242			}
243			prepared.ExtraParams["region"] = env.Get("AWS_REGION")
244			if prepared.ExtraParams["region"] == "" {
245				prepared.ExtraParams["region"] = env.Get("AWS_DEFAULT_REGION")
246			}
247			for _, model := range p.Models {
248				if !strings.HasPrefix(model.ID, "anthropic.") {
249					return fmt.Errorf("bedrock provider only supports anthropic models for now, found: %s", model.ID)
250				}
251			}
252		default:
253			// if the provider api or endpoint are missing we skip them
254			v, err := resolver.ResolveValue(p.APIKey)
255			if v == "" || err != nil {
256				if configExists {
257					slog.Warn("Skipping provider due to missing API key", "provider", p.ID)
258					c.Providers.Del(string(p.ID))
259				}
260				continue
261			}
262		}
263		c.Providers.Set(string(p.ID), prepared)
264	}
265
266	// validate the custom providers
267	for id, providerConfig := range c.Providers.Seq2() {
268		if knownProviderNames[id] {
269			continue
270		}
271
272		// Make sure the provider ID is set
273		providerConfig.ID = id
274		if providerConfig.Name == "" {
275			providerConfig.Name = id // Use ID as name if not set
276		}
277		// default to OpenAI if not set
278		if providerConfig.Type == "" {
279			providerConfig.Type = catwalk.TypeOpenAICompat
280		}
281		if !slices.Contains(catwalk.KnownProviderTypes(), providerConfig.Type) && providerConfig.Type != hyper.Name {
282			slog.Warn("Skipping custom provider due to unsupported provider type", "provider", id)
283			c.Providers.Del(id)
284			continue
285		}
286
287		if providerConfig.Disable {
288			slog.Debug("Skipping custom provider due to disable flag", "provider", id)
289			c.Providers.Del(id)
290			continue
291		}
292		if providerConfig.APIKey == "" {
293			slog.Warn("Provider is missing API key, this might be OK for local providers", "provider", id)
294		}
295		if providerConfig.BaseURL == "" {
296			slog.Warn("Skipping custom provider due to missing API endpoint", "provider", id)
297			c.Providers.Del(id)
298			continue
299		}
300		if len(providerConfig.Models) == 0 {
301			slog.Warn("Skipping custom provider because the provider has no models", "provider", id)
302			c.Providers.Del(id)
303			continue
304		}
305		apiKey, err := resolver.ResolveValue(providerConfig.APIKey)
306		if apiKey == "" || err != nil {
307			slog.Warn("Provider is missing API key, this might be OK for local providers", "provider", id)
308		}
309		baseURL, err := resolver.ResolveValue(providerConfig.BaseURL)
310		if baseURL == "" || err != nil {
311			slog.Warn("Skipping custom provider due to missing API endpoint", "provider", id, "error", err)
312			c.Providers.Del(id)
313			continue
314		}
315
316		c.Providers.Set(id, providerConfig)
317	}
318	return nil
319}
320
321func (c *Config) setDefaults(workingDir, dataDir string) {
322	c.workingDir = workingDir
323	if c.Options == nil {
324		c.Options = &Options{}
325	}
326	if c.Options.TUI == nil {
327		c.Options.TUI = &TUIOptions{}
328	}
329	if c.Options.ContextPaths == nil {
330		c.Options.ContextPaths = []string{}
331	}
332	if c.Options.MemoryPaths == nil {
333		crushConfigDir := filepath.Dir(GlobalConfig())
334		c.Options.MemoryPaths = []string{
335			filepath.Join(crushConfigDir, "CRUSH.md"),
336			filepath.Join(filepath.Dir(crushConfigDir), "AGENTS.md"),
337		}
338	}
339	slices.Sort(c.Options.MemoryPaths)
340	c.Options.MemoryPaths = slices.Compact(c.Options.MemoryPaths)
341
342	if dataDir != "" {
343		c.Options.DataDirectory = dataDir
344	} else if c.Options.DataDirectory == "" {
345		if path, ok := fsext.LookupClosest(workingDir, defaultDataDirectory); ok {
346			c.Options.DataDirectory = path
347		} else {
348			c.Options.DataDirectory = filepath.Join(workingDir, defaultDataDirectory)
349		}
350	}
351	if c.Providers == nil {
352		c.Providers = csync.NewMap[string, ProviderConfig]()
353	}
354	if c.Models == nil {
355		c.Models = make(map[SelectedModelType]SelectedModel)
356	}
357	if c.RecentModels == nil {
358		c.RecentModels = make(map[SelectedModelType][]SelectedModel)
359	}
360	if c.MCP == nil {
361		c.MCP = make(map[string]MCPConfig)
362	}
363	if c.LSP == nil {
364		c.LSP = make(map[string]LSPConfig)
365	}
366
367	// Apply defaults to LSP configurations
368	c.applyLSPDefaults()
369
370	// Add the default context paths if they are not already present
371	c.Options.ContextPaths = append(defaultContextPaths, c.Options.ContextPaths...)
372	slices.Sort(c.Options.ContextPaths)
373	c.Options.ContextPaths = slices.Compact(c.Options.ContextPaths)
374
375	if str, ok := os.LookupEnv("CRUSH_DISABLE_PROVIDER_AUTO_UPDATE"); ok {
376		c.Options.DisableProviderAutoUpdate, _ = strconv.ParseBool(str)
377	}
378
379	if c.Options.Attribution == nil {
380		c.Options.Attribution = &Attribution{
381			TrailerStyle:  TrailerStyleAssistedBy,
382			GeneratedWith: true,
383		}
384	} else if c.Options.Attribution.TrailerStyle == "" {
385		// Migrate deprecated co_authored_by or apply default
386		if c.Options.Attribution.CoAuthoredBy != nil {
387			if *c.Options.Attribution.CoAuthoredBy {
388				c.Options.Attribution.TrailerStyle = TrailerStyleCoAuthoredBy
389			} else {
390				c.Options.Attribution.TrailerStyle = TrailerStyleNone
391			}
392		} else {
393			c.Options.Attribution.TrailerStyle = TrailerStyleAssistedBy
394		}
395	}
396	if c.Options.InitializeAs == "" {
397		c.Options.InitializeAs = defaultInitializeAs
398	}
399}
400
401// applyLSPDefaults applies default values from powernap to LSP configurations
402func (c *Config) applyLSPDefaults() {
403	// Get powernap's default configuration
404	configManager := powernapConfig.NewManager()
405	configManager.LoadDefaults()
406
407	// Apply defaults to each LSP configuration
408	for name, cfg := range c.LSP {
409		// Try to get defaults from powernap based on name or command name.
410		base, ok := configManager.GetServer(name)
411		if !ok {
412			base, ok = configManager.GetServer(cfg.Command)
413			if !ok {
414				continue
415			}
416		}
417		if cfg.Options == nil {
418			cfg.Options = base.Settings
419		}
420		if cfg.InitOptions == nil {
421			cfg.InitOptions = base.InitOptions
422		}
423		if len(cfg.FileTypes) == 0 {
424			cfg.FileTypes = base.FileTypes
425		}
426		if len(cfg.RootMarkers) == 0 {
427			cfg.RootMarkers = base.RootMarkers
428		}
429		if cfg.Command == "" {
430			cfg.Command = base.Command
431		}
432		if len(cfg.Args) == 0 {
433			cfg.Args = base.Args
434		}
435		if len(cfg.Env) == 0 {
436			cfg.Env = base.Environment
437		}
438		// Update the config in the map
439		c.LSP[name] = cfg
440	}
441}
442
443func (c *Config) defaultModelSelection(knownProviders []catwalk.Provider) (largeModel SelectedModel, smallModel SelectedModel, err error) {
444	if len(knownProviders) == 0 && c.Providers.Len() == 0 {
445		err = fmt.Errorf("no providers configured, please configure at least one provider")
446		return largeModel, smallModel, err
447	}
448
449	// Use the first provider enabled based on the known providers order
450	// if no provider found that is known use the first provider configured
451	for _, p := range knownProviders {
452		providerConfig, ok := c.Providers.Get(string(p.ID))
453		if !ok || providerConfig.Disable {
454			continue
455		}
456		defaultLargeModel := c.GetModel(string(p.ID), p.DefaultLargeModelID)
457		if defaultLargeModel == nil {
458			err = fmt.Errorf("default large model %s not found for provider %s", p.DefaultLargeModelID, p.ID)
459			return largeModel, smallModel, err
460		}
461		largeModel = SelectedModel{
462			Provider:        string(p.ID),
463			Model:           defaultLargeModel.ID,
464			MaxTokens:       defaultLargeModel.DefaultMaxTokens,
465			ReasoningEffort: defaultLargeModel.DefaultReasoningEffort,
466		}
467
468		defaultSmallModel := c.GetModel(string(p.ID), p.DefaultSmallModelID)
469		if defaultSmallModel == nil {
470			err = fmt.Errorf("default small model %s not found for provider %s", p.DefaultSmallModelID, p.ID)
471			return largeModel, smallModel, err
472		}
473		smallModel = SelectedModel{
474			Provider:        string(p.ID),
475			Model:           defaultSmallModel.ID,
476			MaxTokens:       defaultSmallModel.DefaultMaxTokens,
477			ReasoningEffort: defaultSmallModel.DefaultReasoningEffort,
478		}
479		return largeModel, smallModel, err
480	}
481
482	enabledProviders := c.EnabledProviders()
483	slices.SortFunc(enabledProviders, func(a, b ProviderConfig) int {
484		return strings.Compare(a.ID, b.ID)
485	})
486
487	if len(enabledProviders) == 0 {
488		err = fmt.Errorf("no providers configured, please configure at least one provider")
489		return largeModel, smallModel, err
490	}
491
492	providerConfig := enabledProviders[0]
493	if len(providerConfig.Models) == 0 {
494		err = fmt.Errorf("provider %s has no models configured", providerConfig.ID)
495		return largeModel, smallModel, err
496	}
497	defaultLargeModel := c.GetModel(providerConfig.ID, providerConfig.Models[0].ID)
498	largeModel = SelectedModel{
499		Provider:  providerConfig.ID,
500		Model:     defaultLargeModel.ID,
501		MaxTokens: defaultLargeModel.DefaultMaxTokens,
502	}
503	defaultSmallModel := c.GetModel(providerConfig.ID, providerConfig.Models[0].ID)
504	smallModel = SelectedModel{
505		Provider:  providerConfig.ID,
506		Model:     defaultSmallModel.ID,
507		MaxTokens: defaultSmallModel.DefaultMaxTokens,
508	}
509	return largeModel, smallModel, err
510}
511
512func (c *Config) configureSelectedModels(knownProviders []catwalk.Provider) error {
513	defaultLarge, defaultSmall, err := c.defaultModelSelection(knownProviders)
514	if err != nil {
515		return fmt.Errorf("failed to select default models: %w", err)
516	}
517	large, small := defaultLarge, defaultSmall
518
519	largeModelSelected, largeModelConfigured := c.Models[SelectedModelTypeLarge]
520	if largeModelConfigured {
521		if largeModelSelected.Model != "" {
522			large.Model = largeModelSelected.Model
523		}
524		if largeModelSelected.Provider != "" {
525			large.Provider = largeModelSelected.Provider
526		}
527		model := c.GetModel(large.Provider, large.Model)
528		if model == nil {
529			large = defaultLarge
530			// override the model type to large
531			err := c.UpdatePreferredModel(SelectedModelTypeLarge, large)
532			if err != nil {
533				return fmt.Errorf("failed to update preferred large model: %w", err)
534			}
535		} else {
536			if largeModelSelected.MaxTokens > 0 {
537				large.MaxTokens = largeModelSelected.MaxTokens
538			} else {
539				large.MaxTokens = model.DefaultMaxTokens
540			}
541			if largeModelSelected.ReasoningEffort != "" {
542				large.ReasoningEffort = largeModelSelected.ReasoningEffort
543			}
544			large.Think = largeModelSelected.Think
545			if largeModelSelected.Temperature != nil {
546				large.Temperature = largeModelSelected.Temperature
547			}
548			if largeModelSelected.TopP != nil {
549				large.TopP = largeModelSelected.TopP
550			}
551			if largeModelSelected.TopK != nil {
552				large.TopK = largeModelSelected.TopK
553			}
554			if largeModelSelected.FrequencyPenalty != nil {
555				large.FrequencyPenalty = largeModelSelected.FrequencyPenalty
556			}
557			if largeModelSelected.PresencePenalty != nil {
558				large.PresencePenalty = largeModelSelected.PresencePenalty
559			}
560		}
561	}
562	smallModelSelected, smallModelConfigured := c.Models[SelectedModelTypeSmall]
563	if smallModelConfigured {
564		if smallModelSelected.Model != "" {
565			small.Model = smallModelSelected.Model
566		}
567		if smallModelSelected.Provider != "" {
568			small.Provider = smallModelSelected.Provider
569		}
570
571		model := c.GetModel(small.Provider, small.Model)
572		if model == nil {
573			small = defaultSmall
574			// override the model type to small
575			err := c.UpdatePreferredModel(SelectedModelTypeSmall, small)
576			if err != nil {
577				return fmt.Errorf("failed to update preferred small model: %w", err)
578			}
579		} else {
580			if smallModelSelected.MaxTokens > 0 {
581				small.MaxTokens = smallModelSelected.MaxTokens
582			} else {
583				small.MaxTokens = model.DefaultMaxTokens
584			}
585			if smallModelSelected.ReasoningEffort != "" {
586				small.ReasoningEffort = smallModelSelected.ReasoningEffort
587			}
588			if smallModelSelected.Temperature != nil {
589				small.Temperature = smallModelSelected.Temperature
590			}
591			if smallModelSelected.TopP != nil {
592				small.TopP = smallModelSelected.TopP
593			}
594			if smallModelSelected.TopK != nil {
595				small.TopK = smallModelSelected.TopK
596			}
597			if smallModelSelected.FrequencyPenalty != nil {
598				small.FrequencyPenalty = smallModelSelected.FrequencyPenalty
599			}
600			if smallModelSelected.PresencePenalty != nil {
601				small.PresencePenalty = smallModelSelected.PresencePenalty
602			}
603			small.Think = smallModelSelected.Think
604		}
605	}
606	c.Models[SelectedModelTypeLarge] = large
607	c.Models[SelectedModelTypeSmall] = small
608	return nil
609}
610
611// lookupConfigs searches config files recursively from CWD up to FS root
612func lookupConfigs(cwd string) []string {
613	// prepend default config paths
614	configPaths := []string{
615		GlobalConfig(),
616		GlobalConfigData(),
617	}
618
619	configNames := []string{appName + ".json", "." + appName + ".json"}
620
621	foundConfigs, err := fsext.Lookup(cwd, configNames...)
622	if err != nil {
623		// returns at least default configs
624		return configPaths
625	}
626
627	// reverse order so last config has more priority
628	slices.Reverse(foundConfigs)
629
630	return append(configPaths, foundConfigs...)
631}
632
633func loadFromConfigPaths(configPaths []string) (*Config, error) {
634	var configs []io.Reader
635
636	for _, path := range configPaths {
637		fd, err := os.Open(path)
638		if err != nil {
639			if os.IsNotExist(err) {
640				continue
641			}
642			return nil, fmt.Errorf("failed to open config file %s: %w", path, err)
643		}
644		defer fd.Close()
645
646		configs = append(configs, fd)
647	}
648
649	return loadFromReaders(configs)
650}
651
652func loadFromReaders(readers []io.Reader) (*Config, error) {
653	if len(readers) == 0 {
654		return &Config{}, nil
655	}
656
657	merged, err := Merge(readers)
658	if err != nil {
659		return nil, fmt.Errorf("failed to merge configuration readers: %w", err)
660	}
661
662	return LoadReader(merged)
663}
664
665func hasVertexCredentials(env env.Env) bool {
666	hasProject := env.Get("VERTEXAI_PROJECT") != ""
667	hasLocation := env.Get("VERTEXAI_LOCATION") != ""
668	return hasProject && hasLocation
669}
670
671func hasAWSCredentials(env env.Env) bool {
672	if env.Get("AWS_BEARER_TOKEN_BEDROCK") != "" {
673		return true
674	}
675
676	if env.Get("AWS_ACCESS_KEY_ID") != "" && env.Get("AWS_SECRET_ACCESS_KEY") != "" {
677		return true
678	}
679
680	if env.Get("AWS_PROFILE") != "" || env.Get("AWS_DEFAULT_PROFILE") != "" {
681		return true
682	}
683
684	if env.Get("AWS_REGION") != "" || env.Get("AWS_DEFAULT_REGION") != "" {
685		return true
686	}
687
688	if env.Get("AWS_CONTAINER_CREDENTIALS_RELATIVE_URI") != "" ||
689		env.Get("AWS_CONTAINER_CREDENTIALS_FULL_URI") != "" {
690		return true
691	}
692
693	if _, err := os.Stat(filepath.Join(home.Dir(), ".aws/credentials")); err == nil && !testing.Testing() {
694		return true
695	}
696
697	return false
698}
699
700// GlobalConfig returns the global configuration file path for the application.
701func GlobalConfig() string {
702	if crushGlobal := os.Getenv("CRUSH_GLOBAL_CONFIG"); crushGlobal != "" {
703		return filepath.Join(crushGlobal, fmt.Sprintf("%s.json", appName))
704	}
705	if xdgConfigHome := os.Getenv("XDG_CONFIG_HOME"); xdgConfigHome != "" {
706		return filepath.Join(xdgConfigHome, appName, fmt.Sprintf("%s.json", appName))
707	}
708	return filepath.Join(home.Dir(), ".config", appName, fmt.Sprintf("%s.json", appName))
709}
710
711// GlobalConfigData returns the path to the main data directory for the application.
712// this config is used when the app overrides configurations instead of updating the global config.
713func GlobalConfigData() string {
714	if crushData := os.Getenv("CRUSH_GLOBAL_DATA"); crushData != "" {
715		return filepath.Join(crushData, fmt.Sprintf("%s.json", appName))
716	}
717	if xdgDataHome := os.Getenv("XDG_DATA_HOME"); xdgDataHome != "" {
718		return filepath.Join(xdgDataHome, appName, fmt.Sprintf("%s.json", appName))
719	}
720
721	// return the path to the main data directory
722	// for windows, it should be in `%LOCALAPPDATA%/crush/`
723	// for linux and macOS, it should be in `$HOME/.local/share/crush/`
724	if runtime.GOOS == "windows" {
725		localAppData := cmp.Or(
726			os.Getenv("LOCALAPPDATA"),
727			filepath.Join(os.Getenv("USERPROFILE"), "AppData", "Local"),
728		)
729		return filepath.Join(localAppData, appName, fmt.Sprintf("%s.json", appName))
730	}
731
732	return filepath.Join(home.Dir(), ".local", "share", appName, fmt.Sprintf("%s.json", appName))
733}
734
735func assignIfNil[T any](ptr **T, val T) {
736	if *ptr == nil {
737		*ptr = &val
738	}
739}
740
741func isInsideWorktree() bool {
742	bts, err := exec.CommandContext(
743		context.Background(),
744		"git", "rev-parse",
745		"--is-inside-work-tree",
746	).CombinedOutput()
747	return err == nil && strings.TrimSpace(string(bts)) == "true"
748}