|
| 1 | +package claude |
| 2 | + |
| 3 | +import ( |
| 4 | + "encoding/json" |
| 5 | + "fmt" |
| 6 | + "os" |
| 7 | + "path/filepath" |
| 8 | + |
| 9 | + "github.com/sleuth-io/skills/internal/logger" |
| 10 | +) |
| 11 | + |
| 12 | +// Output is an interface for printing messages during hook installation |
| 13 | +type Output interface { |
| 14 | + Println(string) |
| 15 | + PrintfErr(string, ...interface{}) |
| 16 | +} |
| 17 | + |
| 18 | +// GetClaudeDir returns the Claude Code directory (~/.claude) |
| 19 | +func GetClaudeDir() (string, error) { |
| 20 | + home, err := os.UserHomeDir() |
| 21 | + if err != nil { |
| 22 | + return "", fmt.Errorf("failed to get home directory: %w", err) |
| 23 | + } |
| 24 | + return filepath.Join(home, ".claude"), nil |
| 25 | +} |
| 26 | + |
| 27 | +// InstallHooks installs Claude Code hooks (usage tracking and auto-update) |
| 28 | +func InstallHooks(out Output) error { |
| 29 | + claudeDir, err := GetClaudeDir() |
| 30 | + if err != nil { |
| 31 | + return fmt.Errorf("failed to get Claude directory: %w", err) |
| 32 | + } |
| 33 | + |
| 34 | + // Install usage reporting hook |
| 35 | + if err := installUsageReportingHook(claudeDir, out); err != nil { |
| 36 | + return fmt.Errorf("failed to install usage reporting hook: %w", err) |
| 37 | + } |
| 38 | + |
| 39 | + // Install session start hook for auto-update |
| 40 | + if err := installSessionStartHook(claudeDir, out); err != nil { |
| 41 | + return fmt.Errorf("failed to install session start hook: %w", err) |
| 42 | + } |
| 43 | + |
| 44 | + return nil |
| 45 | +} |
| 46 | + |
| 47 | +// installSessionStartHook installs the SessionStart hook for auto-updating artifacts |
| 48 | +func installSessionStartHook(claudeDir string, out Output) error { |
| 49 | + settingsPath := filepath.Join(claudeDir, "settings.json") |
| 50 | + |
| 51 | + // Read existing settings or create new |
| 52 | + var settings map[string]interface{} |
| 53 | + if data, err := os.ReadFile(settingsPath); err == nil { |
| 54 | + if err := json.Unmarshal(data, &settings); err != nil { |
| 55 | + return fmt.Errorf("failed to parse settings.json: %w", err) |
| 56 | + } |
| 57 | + } else { |
| 58 | + settings = make(map[string]interface{}) |
| 59 | + } |
| 60 | + |
| 61 | + // Get or create hooks section |
| 62 | + hooks, ok := settings["hooks"].(map[string]interface{}) |
| 63 | + if !ok { |
| 64 | + hooks = make(map[string]interface{}) |
| 65 | + settings["hooks"] = hooks |
| 66 | + } |
| 67 | + |
| 68 | + // Get or create SessionStart array |
| 69 | + sessionStart, ok := hooks["SessionStart"].([]interface{}) |
| 70 | + if !ok { |
| 71 | + sessionStart = []interface{}{} |
| 72 | + } |
| 73 | + |
| 74 | + // Check if our hook already exists |
| 75 | + hookExists := false |
| 76 | + for _, item := range sessionStart { |
| 77 | + if hookMap, ok := item.(map[string]interface{}); ok { |
| 78 | + if hooksArray, ok := hookMap["hooks"].([]interface{}); ok { |
| 79 | + for _, h := range hooksArray { |
| 80 | + if hMap, ok := h.(map[string]interface{}); ok { |
| 81 | + if cmd, ok := hMap["command"].(string); ok && (cmd == "skills install --hook-mode" || cmd == "skills install" || cmd == "skills install --error-on-change") { |
| 82 | + hookExists = true |
| 83 | + break |
| 84 | + } |
| 85 | + } |
| 86 | + } |
| 87 | + } |
| 88 | + } |
| 89 | + if hookExists { |
| 90 | + break |
| 91 | + } |
| 92 | + } |
| 93 | + |
| 94 | + // Add hook if it doesn't exist |
| 95 | + if !hookExists { |
| 96 | + newHook := map[string]interface{}{ |
| 97 | + "hooks": []interface{}{ |
| 98 | + map[string]interface{}{ |
| 99 | + "type": "command", |
| 100 | + "command": "skills install --hook-mode", |
| 101 | + }, |
| 102 | + }, |
| 103 | + } |
| 104 | + sessionStart = append(sessionStart, newHook) |
| 105 | + hooks["SessionStart"] = sessionStart |
| 106 | + |
| 107 | + // Write back to file |
| 108 | + data, err := json.MarshalIndent(settings, "", " ") |
| 109 | + if err != nil { |
| 110 | + return fmt.Errorf("failed to marshal settings: %w", err) |
| 111 | + } |
| 112 | + |
| 113 | + if err := os.WriteFile(settingsPath, data, 0644); err != nil { |
| 114 | + return fmt.Errorf("failed to write settings.json: %w", err) |
| 115 | + } |
| 116 | + |
| 117 | + log := logger.Get() |
| 118 | + log.Info("hook installed", "hook", "SessionStart", "command", "skills install --hook-mode") |
| 119 | + out.Println("\n✓ Installed auto-update hook to ~/.claude/settings.json") |
| 120 | + } |
| 121 | + |
| 122 | + return nil |
| 123 | +} |
| 124 | + |
| 125 | +// installUsageReportingHook installs the PostToolUse hook for usage tracking |
| 126 | +func installUsageReportingHook(claudeDir string, out Output) error { |
| 127 | + settingsPath := filepath.Join(claudeDir, "settings.json") |
| 128 | + |
| 129 | + // Read existing settings or create new |
| 130 | + var settings map[string]interface{} |
| 131 | + if data, err := os.ReadFile(settingsPath); err == nil { |
| 132 | + if err := json.Unmarshal(data, &settings); err != nil { |
| 133 | + return fmt.Errorf("failed to parse settings.json: %w", err) |
| 134 | + } |
| 135 | + } else { |
| 136 | + settings = make(map[string]interface{}) |
| 137 | + } |
| 138 | + |
| 139 | + // Get or create hooks section |
| 140 | + hooks, ok := settings["hooks"].(map[string]interface{}) |
| 141 | + if !ok { |
| 142 | + hooks = make(map[string]interface{}) |
| 143 | + settings["hooks"] = hooks |
| 144 | + } |
| 145 | + |
| 146 | + // Get or create PostToolUse array |
| 147 | + postToolUse, ok := hooks["PostToolUse"].([]interface{}) |
| 148 | + if !ok { |
| 149 | + postToolUse = []interface{}{} |
| 150 | + } |
| 151 | + |
| 152 | + // Check if our hook already exists |
| 153 | + hookExists := false |
| 154 | + for _, item := range postToolUse { |
| 155 | + if hookMap, ok := item.(map[string]interface{}); ok { |
| 156 | + if hooksArray, ok := hookMap["hooks"].([]interface{}); ok { |
| 157 | + for _, h := range hooksArray { |
| 158 | + if hMap, ok := h.(map[string]interface{}); ok { |
| 159 | + if cmd, ok := hMap["command"].(string); ok && cmd == "skills report-usage" { |
| 160 | + hookExists = true |
| 161 | + break |
| 162 | + } |
| 163 | + } |
| 164 | + } |
| 165 | + } |
| 166 | + } |
| 167 | + if hookExists { |
| 168 | + break |
| 169 | + } |
| 170 | + } |
| 171 | + |
| 172 | + // Add hook if it doesn't exist |
| 173 | + if !hookExists { |
| 174 | + newHook := map[string]interface{}{ |
| 175 | + "matcher": "Skill|Task|SlashCommand|mcp__.*", |
| 176 | + "hooks": []interface{}{ |
| 177 | + map[string]interface{}{ |
| 178 | + "type": "command", |
| 179 | + "command": "skills report-usage", |
| 180 | + }, |
| 181 | + }, |
| 182 | + } |
| 183 | + postToolUse = append(postToolUse, newHook) |
| 184 | + hooks["PostToolUse"] = postToolUse |
| 185 | + |
| 186 | + // Write back to file |
| 187 | + data, err := json.MarshalIndent(settings, "", " ") |
| 188 | + if err != nil { |
| 189 | + return fmt.Errorf("failed to marshal settings: %w", err) |
| 190 | + } |
| 191 | + |
| 192 | + if err := os.WriteFile(settingsPath, data, 0644); err != nil { |
| 193 | + return fmt.Errorf("failed to write settings.json: %w", err) |
| 194 | + } |
| 195 | + |
| 196 | + log := logger.Get() |
| 197 | + log.Info("hook installed", "hook", "PostToolUse", "command", "skills report-usage") |
| 198 | + out.Println("\n✓ Installed usage reporting hook to ~/.claude/settings.json") |
| 199 | + } |
| 200 | + |
| 201 | + return nil |
| 202 | +} |
0 commit comments