| 1 | package ledger |
| 2 | |
| 3 | import ( |
| 4 | "fmt" |
| 5 | "os" |
| 6 | "time" |
| 7 | |
| 8 | "github.com/zionboggan/agent-time-ledger/internal/clock" |
| 9 | "github.com/zionboggan/agent-time-ledger/internal/state" |
| 10 | ) |
| 11 | |
| 12 | type Service struct { |
| 13 | Store *state.Store |
| 14 | Now func() time.Time |
| 15 | DefaultTimezone string |
| 16 | } |
| 17 | |
| 18 | type NowResponse struct { |
| 19 | Timestamp string `json:"timestamp"` |
| 20 | UTCTimestamp string `json:"utc_timestamp"` |
| 21 | Unix int64 `json:"unix"` |
| 22 | Timezone string `json:"timezone"` |
| 23 | UTCOffset string `json:"utc_offset"` |
| 24 | Confidence string `json:"confidence"` |
| 25 | } |
| 26 | |
| 27 | type SessionStatusResponse struct { |
| 28 | Active bool `json:"active"` |
| 29 | ID string `json:"id,omitempty"` |
| 30 | Name string `json:"name,omitempty"` |
| 31 | StartedAt string `json:"started_at,omitempty"` |
| 32 | EndedAt string `json:"ended_at,omitempty"` |
| 33 | ElapsedSeconds float64 `json:"elapsed_seconds,omitempty"` |
| 34 | ElapsedHuman string `json:"elapsed_human,omitempty"` |
| 35 | Confidence string `json:"confidence"` |
| 36 | } |
| 37 | |
| 38 | type MarkElapsedResponse struct { |
| 39 | Name string `json:"name"` |
| 40 | StartedAt string `json:"started_at"` |
| 41 | Now string `json:"now"` |
| 42 | ElapsedSeconds float64 `json:"elapsed_seconds"` |
| 43 | ElapsedHuman string `json:"elapsed_human"` |
| 44 | Confidence string `json:"confidence"` |
| 45 | } |
| 46 | |
| 47 | type MarkSummary struct { |
| 48 | Name string `json:"name"` |
| 49 | StartedAt string `json:"started_at"` |
| 50 | ElapsedSeconds float64 `json:"elapsed_seconds"` |
| 51 | ElapsedHuman string `json:"elapsed_human"` |
| 52 | Confidence string `json:"confidence"` |
| 53 | } |
| 54 | |
| 55 | type StaleResponse struct { |
| 56 | CheckedAt string `json:"checked_at"` |
| 57 | ReferenceTime string `json:"reference_time"` |
| 58 | TTL string `json:"ttl"` |
| 59 | ElapsedSeconds float64 `json:"elapsed_seconds"` |
| 60 | ElapsedHuman string `json:"elapsed_human"` |
| 61 | Stale bool `json:"stale"` |
| 62 | Confidence string `json:"confidence"` |
| 63 | } |
| 64 | |
| 65 | type ReportResponse struct { |
| 66 | Date string `json:"date"` |
| 67 | GeneratedAt string `json:"generated_at"` |
| 68 | ActiveSession bool `json:"active_session"` |
| 69 | ActiveSessionID string `json:"active_session_id,omitempty"` |
| 70 | SessionsStarted int `json:"sessions_started"` |
| 71 | SessionsEnded int `json:"sessions_ended"` |
| 72 | OpenMarks int `json:"open_marks"` |
| 73 | EventsByType map[string]int `json:"events_by_type"` |
| 74 | TotalEventsToday int `json:"total_events_today"` |
| 75 | Confidence string `json:"confidence"` |
| 76 | } |
| 77 | |
| 78 | func NewService(store *state.Store) *Service { |
| 79 | return &Service{Store: store, Now: clock.Now, DefaultTimezone: os.Getenv("ATL_TIMEZONE")} |
| 80 | } |
| 81 | |
| 82 | func (s *Service) NowResponse() (NowResponse, error) { |
| 83 | return s.NowResponseIn("") |
| 84 | } |
| 85 | |
| 86 | func (s *Service) NowResponseIn(timezone string) (NowResponse, error) { |
| 87 | if timezone == "" { |
| 88 | timezone = s.DefaultTimezone |
| 89 | } |
| 90 | location, err := clock.LoadLocation(timezone) |
| 91 | if err != nil { |
| 92 | return NowResponse{}, err |
| 93 | } |
| 94 | now := s.now() |
| 95 | localNow := now.In(location) |
| 96 | return NowResponse{ |
| 97 | Timestamp: clock.FormatRFC3339In(now, location), |
| 98 | UTCTimestamp: clock.FormatRFC3339(now), |
| 99 | Unix: now.Unix(), |
| 100 | Timezone: clock.LocationName(location), |
| 101 | UTCOffset: clock.UTCOffset(localNow), |
| 102 | Confidence: clock.ConfidenceHostClock, |
| 103 | }, nil |
| 104 | } |
| 105 | |
| 106 | func (s *Service) StartSession(name string) (SessionStatusResponse, error) { |
| 107 | if name == "" { |
| 108 | return SessionStatusResponse{}, fmt.Errorf("session name is required") |
| 109 | } |
| 110 | st, err := s.Store.Load() |
| 111 | if err != nil { |
| 112 | return SessionStatusResponse{}, err |
| 113 | } |
| 114 | if st.ActiveSessionID != "" { |
| 115 | return SessionStatusResponse{}, fmt.Errorf("session already active: %s", st.ActiveSessionID) |
| 116 | } |
| 117 | now := s.now() |
| 118 | id := "sess_" + now.Format("20060102T150405.000000000Z") |
| 119 | session := state.Session{ID: id, Name: name, StartedAt: now} |
| 120 | st.ActiveSessionID = id |
| 121 | st.Sessions[id] = session |
| 122 | if err := s.Store.Save(st); err != nil { |
| 123 | return SessionStatusResponse{}, err |
| 124 | } |
| 125 | if err := s.Store.AppendEvent(state.Event{ |
| 126 | Timestamp: now, |
| 127 | Type: "session_start", |
| 128 | Fields: map[string]any{"session_id": id, "name": name}, |
| 129 | }); err != nil { |
| 130 | return SessionStatusResponse{}, err |
| 131 | } |
| 132 | return s.sessionResponse(session, now), nil |
| 133 | } |
| 134 | |
| 135 | func (s *Service) SessionStatus() (SessionStatusResponse, error) { |
| 136 | st, err := s.Store.Load() |
| 137 | if err != nil { |
| 138 | return SessionStatusResponse{}, err |
| 139 | } |
| 140 | if st.ActiveSessionID == "" { |
| 141 | return SessionStatusResponse{Active: false, Confidence: clock.ConfidenceWallFallback}, nil |
| 142 | } |
| 143 | session, ok := st.Sessions[st.ActiveSessionID] |
| 144 | if !ok { |
| 145 | return SessionStatusResponse{}, fmt.Errorf("active session %q not found in state", st.ActiveSessionID) |
| 146 | } |
| 147 | return s.sessionResponse(session, s.now()), nil |
| 148 | } |
| 149 | |
| 150 | func (s *Service) EndSession() (SessionStatusResponse, error) { |
| 151 | st, err := s.Store.Load() |
| 152 | if err != nil { |
| 153 | return SessionStatusResponse{}, err |
| 154 | } |
| 155 | if st.ActiveSessionID == "" { |
| 156 | return SessionStatusResponse{}, fmt.Errorf("no active session") |
| 157 | } |
| 158 | session, ok := st.Sessions[st.ActiveSessionID] |
| 159 | if !ok { |
| 160 | return SessionStatusResponse{}, fmt.Errorf("active session %q not found in state", st.ActiveSessionID) |
| 161 | } |
| 162 | now := s.now() |
| 163 | session.EndedAt = &now |
| 164 | st.Sessions[session.ID] = session |
| 165 | st.ActiveSessionID = "" |
| 166 | if err := s.Store.Save(st); err != nil { |
| 167 | return SessionStatusResponse{}, err |
| 168 | } |
| 169 | if err := s.Store.AppendEvent(state.Event{ |
| 170 | Timestamp: now, |
| 171 | Type: "session_end", |
| 172 | Fields: map[string]any{"session_id": session.ID, "name": session.Name}, |
| 173 | }); err != nil { |
| 174 | return SessionStatusResponse{}, err |
| 175 | } |
| 176 | return s.sessionResponse(session, now), nil |
| 177 | } |
| 178 | |
| 179 | func (s *Service) StartMark(name string) (MarkElapsedResponse, error) { |
| 180 | if name == "" { |
| 181 | return MarkElapsedResponse{}, fmt.Errorf("mark name is required") |
| 182 | } |
| 183 | st, err := s.Store.Load() |
| 184 | if err != nil { |
| 185 | return MarkElapsedResponse{}, err |
| 186 | } |
| 187 | now := s.now() |
| 188 | mark := state.Mark{Name: name, StartedAt: now} |
| 189 | st.Marks[name] = mark |
| 190 | if err := s.Store.Save(st); err != nil { |
| 191 | return MarkElapsedResponse{}, err |
| 192 | } |
| 193 | if err := s.Store.AppendEvent(state.Event{ |
| 194 | Timestamp: now, |
| 195 | Type: "mark_start", |
| 196 | Fields: map[string]any{"name": name}, |
| 197 | }); err != nil { |
| 198 | return MarkElapsedResponse{}, err |
| 199 | } |
| 200 | return s.markResponse(mark, now), nil |
| 201 | } |
| 202 | |
| 203 | func (s *Service) MarkElapsed(name string) (MarkElapsedResponse, error) { |
| 204 | st, err := s.Store.Load() |
| 205 | if err != nil { |
| 206 | return MarkElapsedResponse{}, err |
| 207 | } |
| 208 | mark, ok := st.Marks[name] |
| 209 | if !ok { |
| 210 | return MarkElapsedResponse{}, fmt.Errorf("mark %q not found", name) |
| 211 | } |
| 212 | return s.markResponse(mark, s.now()), nil |
| 213 | } |
| 214 | |
| 215 | func (s *Service) ListMarks() ([]MarkSummary, error) { |
| 216 | st, err := s.Store.Load() |
| 217 | if err != nil { |
| 218 | return nil, err |
| 219 | } |
| 220 | now := s.now() |
| 221 | marks := make([]MarkSummary, 0, len(st.Marks)) |
| 222 | for _, mark := range st.Marks { |
| 223 | elapsed := now.Sub(mark.StartedAt) |
| 224 | marks = append(marks, MarkSummary{ |
| 225 | Name: mark.Name, |
| 226 | StartedAt: clock.FormatRFC3339(mark.StartedAt), |
| 227 | ElapsedSeconds: elapsed.Seconds(), |
| 228 | ElapsedHuman: clock.FormatDuration(elapsed), |
| 229 | Confidence: clock.ConfidenceWallFallback, |
| 230 | }) |
| 231 | } |
| 232 | return marks, nil |
| 233 | } |
| 234 | |
| 235 | func (s *Service) DeleteMark(name string) error { |
| 236 | st, err := s.Store.Load() |
| 237 | if err != nil { |
| 238 | return err |
| 239 | } |
| 240 | if _, ok := st.Marks[name]; !ok { |
| 241 | return fmt.Errorf("mark %q not found", name) |
| 242 | } |
| 243 | delete(st.Marks, name) |
| 244 | now := s.now() |
| 245 | if err := s.Store.Save(st); err != nil { |
| 246 | return err |
| 247 | } |
| 248 | return s.Store.AppendEvent(state.Event{ |
| 249 | Timestamp: now, |
| 250 | Type: "mark_delete", |
| 251 | Fields: map[string]any{"name": name}, |
| 252 | }) |
| 253 | } |
| 254 | |
| 255 | func (s *Service) StaleFromTimestamp(reference time.Time, ttl time.Duration) (StaleResponse, error) { |
| 256 | return s.stale(reference.UTC(), ttl, map[string]any{"source": "timestamp"}) |
| 257 | } |
| 258 | |
| 259 | func (s *Service) StaleFromMark(name string, ttl time.Duration) (StaleResponse, error) { |
| 260 | st, err := s.Store.Load() |
| 261 | if err != nil { |
| 262 | return StaleResponse{}, err |
| 263 | } |
| 264 | mark, ok := st.Marks[name] |
| 265 | if !ok { |
| 266 | return StaleResponse{}, fmt.Errorf("mark %q not found", name) |
| 267 | } |
| 268 | return s.stale(mark.StartedAt, ttl, map[string]any{"source": "mark", "name": name}) |
| 269 | } |
| 270 | |
| 271 | func (s *Service) LedgerEvent(note string) error { |
| 272 | now := s.now() |
| 273 | return s.Store.AppendEvent(state.Event{ |
| 274 | Timestamp: now, |
| 275 | Type: "manual_note", |
| 276 | Fields: map[string]any{"note": note}, |
| 277 | }) |
| 278 | } |
| 279 | |
| 280 | func (s *Service) ReportToday() (ReportResponse, error) { |
| 281 | st, err := s.Store.Load() |
| 282 | if err != nil { |
| 283 | return ReportResponse{}, err |
| 284 | } |
| 285 | events, err := s.Store.ReadEvents() |
| 286 | if err != nil { |
| 287 | return ReportResponse{}, err |
| 288 | } |
| 289 | |
| 290 | now := s.now() |
| 291 | start := time.Date(now.Year(), now.Month(), now.Day(), 0, 0, 0, 0, time.UTC) |
| 292 | end := start.Add(24 * time.Hour) |
| 293 | report := ReportResponse{ |
| 294 | Date: start.Format("2006-01-02"), |
| 295 | GeneratedAt: clock.FormatRFC3339(now), |
| 296 | ActiveSession: st.ActiveSessionID != "", |
| 297 | ActiveSessionID: st.ActiveSessionID, |
| 298 | OpenMarks: len(st.Marks), |
| 299 | EventsByType: map[string]int{}, |
| 300 | Confidence: clock.ConfidenceWallFallback, |
| 301 | } |
| 302 | for _, event := range events { |
| 303 | if event.Timestamp.Before(start) || !event.Timestamp.Before(end) { |
| 304 | continue |
| 305 | } |
| 306 | report.EventsByType[event.Type]++ |
| 307 | report.TotalEventsToday++ |
| 308 | switch event.Type { |
| 309 | case "session_start": |
| 310 | report.SessionsStarted++ |
| 311 | case "session_end": |
| 312 | report.SessionsEnded++ |
| 313 | } |
| 314 | } |
| 315 | return report, nil |
| 316 | } |
| 317 | |
| 318 | func (s *Service) stale(reference time.Time, ttl time.Duration, fields map[string]any) (StaleResponse, error) { |
| 319 | if ttl <= 0 { |
| 320 | return StaleResponse{}, fmt.Errorf("ttl must be greater than zero") |
| 321 | } |
| 322 | now := s.now() |
| 323 | elapsed := now.Sub(reference) |
| 324 | response := StaleResponse{ |
| 325 | CheckedAt: clock.FormatRFC3339(now), |
| 326 | ReferenceTime: clock.FormatRFC3339(reference), |
| 327 | TTL: ttl.String(), |
| 328 | ElapsedSeconds: elapsed.Seconds(), |
| 329 | ElapsedHuman: clock.FormatDuration(elapsed), |
| 330 | Stale: elapsed > ttl, |
| 331 | Confidence: clock.ConfidenceWallFallback, |
| 332 | } |
| 333 | eventFields := map[string]any{ |
| 334 | "reference_time": response.ReferenceTime, |
| 335 | "ttl": response.TTL, |
| 336 | "elapsed_seconds": response.ElapsedSeconds, |
| 337 | "stale": response.Stale, |
| 338 | } |
| 339 | for key, value := range fields { |
| 340 | eventFields[key] = value |
| 341 | } |
| 342 | if err := s.Store.AppendEvent(state.Event{ |
| 343 | Timestamp: now, |
| 344 | Type: "stale_check", |
| 345 | Fields: eventFields, |
| 346 | }); err != nil { |
| 347 | return StaleResponse{}, err |
| 348 | } |
| 349 | return response, nil |
| 350 | } |
| 351 | |
| 352 | func (s *Service) sessionResponse(session state.Session, now time.Time) SessionStatusResponse { |
| 353 | end := now |
| 354 | endedAt := "" |
| 355 | active := session.EndedAt == nil |
| 356 | if session.EndedAt != nil { |
| 357 | end = *session.EndedAt |
| 358 | endedAt = clock.FormatRFC3339(*session.EndedAt) |
| 359 | } |
| 360 | elapsed := end.Sub(session.StartedAt) |
| 361 | return SessionStatusResponse{ |
| 362 | Active: active, |
| 363 | ID: session.ID, |
| 364 | Name: session.Name, |
| 365 | StartedAt: clock.FormatRFC3339(session.StartedAt), |
| 366 | EndedAt: endedAt, |
| 367 | ElapsedSeconds: elapsed.Seconds(), |
| 368 | ElapsedHuman: clock.FormatDuration(elapsed), |
| 369 | Confidence: clock.ConfidenceWallFallback, |
| 370 | } |
| 371 | } |
| 372 | |
| 373 | func (s *Service) markResponse(mark state.Mark, now time.Time) MarkElapsedResponse { |
| 374 | elapsed := now.Sub(mark.StartedAt) |
| 375 | return MarkElapsedResponse{ |
| 376 | Name: mark.Name, |
| 377 | StartedAt: clock.FormatRFC3339(mark.StartedAt), |
| 378 | Now: clock.FormatRFC3339(now), |
| 379 | ElapsedSeconds: elapsed.Seconds(), |
| 380 | ElapsedHuman: clock.FormatDuration(elapsed), |
| 381 | Confidence: clock.ConfidenceWallFallback, |
| 382 | } |
| 383 | } |
| 384 | |
| 385 | func (s *Service) now() time.Time { |
| 386 | if s.Now != nil { |
| 387 | return s.Now().UTC() |
| 388 | } |
| 389 | return clock.Now() |
| 390 | } |