package hooks
import (
"runtime"
"strings"
"time"
)
// sessionsIndex represents the top-level structure of Claude Code's
// sessions-index.json file.
type sessionsIndex struct {
Version int `json:"version"`
Entries []sessionEntry `json:"entries"`
}
// sessionEntry represents a single session in the sessions index.
type sessionEntry struct {
SessionID string `json:"sessionId"`
FullPath string `json:"fullPath"`
FileMtime int64 `json:"fileMtime"`
FirstPrompt string `json:"firstPrompt"`
Summary string `json:"summary"`
MessageCount int `json:"messageCount"`
Created string `json:"created"`
Modified string `json:"modified"`
GitBranch string `json:"gitBranch"`
ProjectPath string `json:"projectPath"`
IsSidechain bool `json:"isSidechain"`
}
const (
currentSessionThreshold = 60 * time.Second
// sessionsIndexMaxBytes is the maximum size we'll read for sessions-index.json.
// Claude Code indexes are typically <100KB; 5MB guards against anomalies.
sessionsIndexMaxBytes = 5 * 1024 * 1024
)
// claudeProjectHash converts a directory path to Claude Code's project hash
// format. All path separators are replaced with dashes, and the result starts
// with a leading dash.
func claudeProjectHash(cwd string) string {
result := strings.ReplaceAll(cwd, "/", "-")
if runtime.GOOS == "windows" {
result = strings.ReplaceAll(result, `\`, "-")
result = strings.ReplaceAll(result, ":", "-")
}
if !strings.HasPrefix(result, "-") {
result = "-" + result
}
return result
}
