1package config
2
3import (
4 "fmt"
5 "os"
6 "slices"
7 "strings"
8
9 "github.com/charmbracelet/crush/internal/fur/provider"
10 "github.com/tidwall/sjson"
11)
12
13const (
14 appName = "crush"
15 defaultDataDirectory = ".crush"
16 defaultLogLevel = "info"
17)
18
19var defaultContextPaths = []string{
20 ".github/copilot-instructions.md",
21 ".cursorrules",
22 ".cursor/rules/",
23 "CLAUDE.md",
24 "CLAUDE.local.md",
25 "GEMINI.md",
26 "gemini.md",
27 "crush.md",
28 "crush.local.md",
29 "Crush.md",
30 "Crush.local.md",
31 "CRUSH.md",
32 "CRUSH.local.md",
33}
34
35type SelectedModelType string
36
37const (
38 SelectedModelTypeLarge SelectedModelType = "large"
39 SelectedModelTypeSmall SelectedModelType = "small"
40)
41
42type SelectedModel struct {
43 // The model id as used by the provider API.
44 // Required.
45 Model string `json:"model"`
46 // The model provider, same as the key/id used in the providers config.
47 // Required.
48 Provider string `json:"provider"`
49
50 // Only used by models that use the openai provider and need this set.
51 ReasoningEffort string `json:"reasoning_effort,omitempty"`
52
53 // Overrides the default model configuration.
54 MaxTokens int64 `json:"max_tokens,omitempty"`
55
56 // Used by anthropic models that can reason to indicate if the model should think.
57 Think bool `json:"think,omitempty"`
58}
59
60type ProviderConfig struct {
61 // The provider's id.
62 ID string `json:"id,omitempty"`
63 // The provider's name, used for display purposes.
64 Name string `json:"name,omitempty"`
65 // The provider's API endpoint.
66 BaseURL string `json:"base_url,omitempty"`
67 // The provider type, e.g. "openai", "anthropic", etc. if empty it defaults to openai.
68 Type provider.Type `json:"type,omitempty"`
69 // The provider's API key.
70 APIKey string `json:"api_key,omitempty"`
71 // Marks the provider as disabled.
72 Disable bool `json:"disable,omitempty"`
73
74 // Extra headers to send with each request to the provider.
75 ExtraHeaders map[string]string
76
77 // Used to pass extra parameters to the provider.
78 ExtraParams map[string]string `json:"-"`
79
80 // The provider models
81 Models []provider.Model `json:"models,omitempty"`
82}
83
84type MCPType string
85
86const (
87 MCPStdio MCPType = "stdio"
88 MCPSse MCPType = "sse"
89 MCPHttp MCPType = "http"
90)
91
92type MCPConfig struct {
93 Command string `json:"command,omitempty" `
94 Env []string `json:"env,omitempty"`
95 Args []string `json:"args,omitempty"`
96 Type MCPType `json:"type"`
97 URL string `json:"url,omitempty"`
98
99 // TODO: maybe make it possible to get the value from the env
100 Headers map[string]string `json:"headers,omitempty"`
101}
102
103type LSPConfig struct {
104 Disabled bool `json:"enabled,omitempty"`
105 Command string `json:"command"`
106 Args []string `json:"args,omitempty"`
107 Options any `json:"options,omitempty"`
108}
109
110type TUIOptions struct {
111 CompactMode bool `json:"compact_mode,omitempty"`
112 // Here we can add themes later or any TUI related options
113}
114
115type Options struct {
116 ContextPaths []string `json:"context_paths,omitempty"`
117 TUI *TUIOptions `json:"tui,omitempty"`
118 Debug bool `json:"debug,omitempty"`
119 DebugLSP bool `json:"debug_lsp,omitempty"`
120 DisableAutoSummarize bool `json:"disable_auto_summarize,omitempty"`
121 // Relative to the cwd
122 DataDirectory string `json:"data_directory,omitempty"`
123}
124
125type MCPs map[string]MCPConfig
126
127type MCP struct {
128 Name string `json:"name"`
129 MCP MCPConfig `json:"mcp"`
130}
131
132func (m MCPs) Sorted() []MCP {
133 sorted := make([]MCP, 0, len(m))
134 for k, v := range m {
135 sorted = append(sorted, MCP{
136 Name: k,
137 MCP: v,
138 })
139 }
140 slices.SortFunc(sorted, func(a, b MCP) int {
141 return strings.Compare(a.Name, b.Name)
142 })
143 return sorted
144}
145
146type LSPs map[string]LSPConfig
147
148type LSP struct {
149 Name string `json:"name"`
150 LSP LSPConfig `json:"lsp"`
151}
152
153func (l LSPs) Sorted() []LSP {
154 sorted := make([]LSP, 0, len(l))
155 for k, v := range l {
156 sorted = append(sorted, LSP{
157 Name: k,
158 LSP: v,
159 })
160 }
161 slices.SortFunc(sorted, func(a, b LSP) int {
162 return strings.Compare(a.Name, b.Name)
163 })
164 return sorted
165}
166
167type Agent struct {
168 ID string `json:"id,omitempty"`
169 Name string `json:"name,omitempty"`
170 Description string `json:"description,omitempty"`
171 // This is the id of the system prompt used by the agent
172 Disabled bool `json:"disabled,omitempty"`
173
174 Model SelectedModelType `json:"model"`
175
176 // The available tools for the agent
177 // if this is nil, all tools are available
178 AllowedTools []string `json:"allowed_tools,omitempty"`
179
180 // this tells us which MCPs are available for this agent
181 // if this is empty all mcps are available
182 // the string array is the list of tools from the AllowedMCP the agent has available
183 // if the string array is nil, all tools from the AllowedMCP are available
184 AllowedMCP map[string][]string `json:"allowed_mcp,omitempty"`
185
186 // The list of LSPs that this agent can use
187 // if this is nil, all LSPs are available
188 AllowedLSP []string `json:"allowed_lsp,omitempty"`
189
190 // Overrides the context paths for this agent
191 ContextPaths []string `json:"context_paths,omitempty"`
192}
193
194// Config holds the configuration for crush.
195type Config struct {
196 // We currently only support large/small as values here.
197 Models map[SelectedModelType]SelectedModel `json:"models,omitempty"`
198
199 // The providers that are configured
200 Providers map[string]ProviderConfig `json:"providers,omitempty"`
201
202 MCP MCPs `json:"mcp,omitempty"`
203
204 LSP LSPs `json:"lsp,omitempty"`
205
206 Options *Options `json:"options,omitempty"`
207
208 // Internal
209 workingDir string `json:"-"`
210 // TODO: most likely remove this concept when I come back to it
211 Agents map[string]Agent `json:"-"`
212 // TODO: find a better way to do this this should probably not be part of the config
213 resolver VariableResolver
214 dataConfigDir string `json:"-"`
215}
216
217func (c *Config) WorkingDir() string {
218 return c.workingDir
219}
220
221func (c *Config) EnabledProviders() []ProviderConfig {
222 enabled := make([]ProviderConfig, 0, len(c.Providers))
223 for _, p := range c.Providers {
224 if !p.Disable {
225 enabled = append(enabled, p)
226 }
227 }
228 return enabled
229}
230
231// IsConfigured return true if at least one provider is configured
232func (c *Config) IsConfigured() bool {
233 return len(c.EnabledProviders()) > 0
234}
235
236func (c *Config) GetModel(provider, model string) *provider.Model {
237 if providerConfig, ok := c.Providers[provider]; ok {
238 for _, m := range providerConfig.Models {
239 if m.ID == model {
240 return &m
241 }
242 }
243 }
244 return nil
245}
246
247func (c *Config) GetProviderForModel(modelType SelectedModelType) *ProviderConfig {
248 model, ok := c.Models[modelType]
249 if !ok {
250 return nil
251 }
252 if providerConfig, ok := c.Providers[model.Provider]; ok {
253 return &providerConfig
254 }
255 return nil
256}
257
258func (c *Config) GetModelByType(modelType SelectedModelType) *provider.Model {
259 model, ok := c.Models[modelType]
260 if !ok {
261 return nil
262 }
263 return c.GetModel(model.Provider, model.Model)
264}
265
266func (c *Config) LargeModel() *provider.Model {
267 model, ok := c.Models[SelectedModelTypeLarge]
268 if !ok {
269 return nil
270 }
271 return c.GetModel(model.Provider, model.Model)
272}
273
274func (c *Config) SmallModel() *provider.Model {
275 model, ok := c.Models[SelectedModelTypeSmall]
276 if !ok {
277 return nil
278 }
279 return c.GetModel(model.Provider, model.Model)
280}
281
282func (c *Config) SetCompactMode(enabled bool) error {
283 if c.Options == nil {
284 c.Options = &Options{}
285 }
286 c.Options.TUI.CompactMode = enabled
287 return c.SetConfigField("options.tui.compact_mode", enabled)
288}
289
290func (c *Config) Resolve(key string) (string, error) {
291 if c.resolver == nil {
292 return "", fmt.Errorf("no variable resolver configured")
293 }
294 return c.resolver.ResolveValue(key)
295}
296
297func (c *Config) UpdatePreferredModel(modelType SelectedModelType, model SelectedModel) error {
298 c.Models[modelType] = model
299 if err := c.SetConfigField(fmt.Sprintf("models.%s", modelType), model); err != nil {
300 return fmt.Errorf("failed to update preferred model: %w", err)
301 }
302 return nil
303}
304
305func (c *Config) SetConfigField(key string, value any) error {
306 // read the data
307 data, err := os.ReadFile(c.dataConfigDir)
308 if err != nil {
309 if os.IsNotExist(err) {
310 data = []byte("{}")
311 } else {
312 return fmt.Errorf("failed to read config file: %w", err)
313 }
314 }
315
316 newValue, err := sjson.Set(string(data), key, value)
317 if err != nil {
318 return fmt.Errorf("failed to set config field %s: %w", key, err)
319 }
320 if err := os.WriteFile(c.dataConfigDir, []byte(newValue), 0o644); err != nil {
321 return fmt.Errorf("failed to write config file: %w", err)
322 }
323 return nil
324}