| 1 | use chrono::{DateTime, Utc}; |
| 2 | use codewhale_models::{ContentBlock, Message, Role}; |
| 3 | use serde::{Deserialize, Serialize}; |
| 4 | use std::collections::{HashMap, HashSet}; |
| 5 | pub const CURRENT_JOURNAL_SCHEMA_VERSION: u32 = 1; |
| 6 | pub type EntryId = String; |
| 7 | #[derive(Debug, Clone, Copy, Serialize, Deserialize, PartialEq, Eq, Default)] |
| 8 | pub struct SpawnDepth(pub u32); |
| 9 | impl SpawnDepth { |
| 10 | pub fn next(self) -> Self { |
| 11 | Self(self.0.saturating_add(1)) |
| 12 | } |
| 13 | } |
| 14 | #[derive(Debug, Clone, Serialize, Deserialize, PartialEq)] |
| 15 | #[serde(tag = "kind", rename_all = "snake_case")] |
| 16 | pub enum SessionEntryKind { |
| 17 | Message { |
| 18 | message: Message, |
| 19 | }, |
| 20 | User { |
| 21 | text: String, |
| 22 | }, |
| 23 | Assistant { |
| 24 | text: String, |
| 25 | }, |
| 26 | Compaction { |
| 27 | summary: String, |
| 28 | #[serde(default, skip_serializing_if = "Option::is_none")] |
| 29 | tokens_before: Option<u64>, |
| 30 | #[serde(default, skip_serializing_if = "Option::is_none")] |
| 31 | tokens_after: Option<u64>, |
| 32 | #[serde(default, skip_serializing_if = "Option::is_none")] |
| 33 | model: Option<String>, |
| 34 | }, |
| 35 | BranchSummary { |
| 36 | branch_id: String, |
| 37 | summary: String, |
| 38 | #[serde(default, skip_serializing_if = "Option::is_none")] |
| 39 | parent_branch_id: Option<String>, |
| 40 | }, |
| 41 | System { |
| 42 | content: String, |
| 43 | }, |
| 44 | } |
| 45 | impl SessionEntryKind { |
| 46 | pub fn is_contextual(&self) -> bool { |
| 47 | matches!( |
| 48 | self, |
| 49 | Self::Message { .. } | Self::User { .. } | Self::Assistant { .. } |
| 50 | ) |
| 51 | } |
| 52 | pub fn as_message(&self) -> Option<Message> { |
| 53 | match self { |
| 54 | Self::Message { message } => Some(message.clone()), |
| 55 | Self::User { text } => Some(Message { |
| 56 | role: Role::User, |
| 57 | content: vec![ContentBlock::Text { |
| 58 | text: text.clone(), |
| 59 | cache_control: None, |
| 60 | }], |
| 61 | }), |
| 62 | Self::Assistant { text } => Some(Message { |
| 63 | role: Role::Assistant, |
| 64 | content: vec![ContentBlock::Text { |
| 65 | text: text.clone(), |
| 66 | cache_control: None, |
| 67 | }], |
| 68 | }), |
| 69 | Self::Compaction { summary, .. } => Some(Message { |
| 70 | role: Role::System, |
| 71 | content: vec![ContentBlock::Text { |
| 72 | text: format!("[compaction summary] {summary}"), |
| 73 | cache_control: None, |
| 74 | }], |
| 75 | }), |
| 76 | Self::BranchSummary { summary, .. } => Some(Message { |
| 77 | role: Role::System, |
| 78 | content: vec![ContentBlock::Text { |
| 79 | text: format!("[branch summary] {summary}"), |
| 80 | cache_control: None, |
| 81 | }], |
| 82 | }), |
| 83 | Self::System { content } => Some(Message { |
| 84 | role: Role::System, |
| 85 | content: vec![ContentBlock::Text { |
| 86 | text: content.clone(), |
| 87 | cache_control: None, |
| 88 | }], |
| 89 | }), |
| 90 | } |
| 91 | } |
| 92 | } |
| 93 | #[derive(Debug, Clone, Serialize, Deserialize, PartialEq)] |
| 94 | pub struct SessionEntry { |
| 95 | pub id: EntryId, |
| 96 | #[serde(default, skip_serializing_if = "Option::is_none")] |
| 97 | pub parent_id: Option<EntryId>, |
| 98 | #[serde(flatten)] |
| 99 | pub kind: SessionEntryKind, |
| 100 | pub created_at: DateTime<Utc>, |
| 101 | #[serde(default)] |
| 102 | pub spawn_depth: u32, |
| 103 | } |
| 104 | impl SessionEntry { |
| 105 | pub fn new(kind: SessionEntryKind, parent_id: Option<EntryId>, spawn_depth: u32) -> Self { |
| 106 | Self { |
| 107 | id: uuid::Uuid::new_v4().to_string(), |
| 108 | parent_id, |
| 109 | kind, |
| 110 | created_at: Utc::now(), |
| 111 | spawn_depth, |
| 112 | } |
| 113 | } |
| 114 | pub fn short_id(&self) -> &str { |
| 115 | if self.id.len() >= 8 { |
| 116 | &self.id[..8] |
| 117 | } else { |
| 118 | &self.id |
| 119 | } |
| 120 | } |
| 121 | } |
| 122 | #[derive(Debug, Clone, Serialize, Deserialize, PartialEq, Default)] |
| 123 | pub struct SessionJournal { |
| 124 | #[serde(default)] |
| 125 | pub entries: Vec<SessionEntry>, |
| 126 | #[serde(default, skip_serializing_if = "Option::is_none")] |
| 127 | pub leaf_id: Option<EntryId>, |
| 128 | #[serde(default = "default_journal_schema_version")] |
| 129 | pub schema_version: u32, |
| 130 | #[serde(default)] |
| 131 | pub spawn_depth: u32, |
| 132 | } |
| 133 | fn default_journal_schema_version() -> u32 { |
| 134 | CURRENT_JOURNAL_SCHEMA_VERSION |
| 135 | } |
| 136 | impl SessionJournal { |
| 137 | pub fn new() -> Self { |
| 138 | Self { |
| 139 | entries: Vec::new(), |
| 140 | leaf_id: None, |
| 141 | schema_version: CURRENT_JOURNAL_SCHEMA_VERSION, |
| 142 | spawn_depth: 0, |
| 143 | } |
| 144 | } |
| 145 | pub fn with_spawn_depth(depth: u32) -> Self { |
| 146 | Self { |
| 147 | spawn_depth: depth, |
| 148 | ..Self::new() |
| 149 | } |
| 150 | } |
| 151 | pub fn append(&mut self, kind: SessionEntryKind) -> EntryId { |
| 152 | self.append_stamped(kind, Utc::now()) |
| 153 | } |
| 154 | /// Append an entry carrying the time the underlying event happened, not |
| 155 | /// the time the save ran. `created_at` is the journal's timeline; stamping |
| 156 | /// it at append is what keeps a rebuilt journal honest — a save must never |
| 157 | /// rewrite an entry's time to the moment it was written. |
| 158 | pub fn append_stamped(&mut self, kind: SessionEntryKind, created_at: DateTime<Utc>) -> EntryId { |
| 159 | let mut entry = SessionEntry::new(kind, self.leaf_id.clone(), self.spawn_depth); |
| 160 | entry.created_at = created_at; |
| 161 | let id = entry.id.clone(); |
| 162 | self.entries.push(entry); |
| 163 | self.leaf_id = Some(id.clone()); |
| 164 | id |
| 165 | } |
| 166 | pub fn append_message(&mut self, message: Message) -> EntryId { |
| 167 | self.append(SessionEntryKind::Message { message }) |
| 168 | } |
| 169 | pub fn append_compaction( |
| 170 | &mut self, |
| 171 | summary: String, |
| 172 | tokens_before: Option<u64>, |
| 173 | tokens_after: Option<u64>, |
| 174 | model: Option<String>, |
| 175 | ) -> EntryId { |
| 176 | self.append(SessionEntryKind::Compaction { |
| 177 | summary, |
| 178 | tokens_before, |
| 179 | tokens_after, |
| 180 | model, |
| 181 | }) |
| 182 | } |
| 183 | pub fn append_branch_summary( |
| 184 | &mut self, |
| 185 | branch_id: String, |
| 186 | summary: String, |
| 187 | parent_branch_id: Option<String>, |
| 188 | ) -> EntryId { |
| 189 | self.append(SessionEntryKind::BranchSummary { |
| 190 | branch_id, |
| 191 | summary, |
| 192 | parent_branch_id, |
| 193 | }) |
| 194 | } |
| 195 | pub fn branch_to(&mut self, entry_id: &str) -> Result<(), String> { |
| 196 | if self.entries.iter().any(|e| e.id == entry_id) { |
| 197 | self.leaf_id = Some(entry_id.to_string()); |
| 198 | Ok(()) |
| 199 | } else { |
| 200 | Err(format!("entry {entry_id} not found")) |
| 201 | } |
| 202 | } |
| 203 | pub fn fork_from(&self, from_entry_id: Option<&str>) -> Result<Self, String> { |
| 204 | let leaf = if let Some(id) = from_entry_id { |
| 205 | if !self.entries.iter().any(|e| e.id == id) { |
| 206 | return Err(format!("fork source {id} not found")); |
| 207 | } |
| 208 | Some(id.to_string()) |
| 209 | } else { |
| 210 | self.leaf_id.clone() |
| 211 | }; |
| 212 | Ok(Self { |
| 213 | entries: self.entries.clone(), |
| 214 | leaf_id: leaf, |
| 215 | schema_version: self.schema_version, |
| 216 | spawn_depth: self.spawn_depth.saturating_add(1), |
| 217 | }) |
| 218 | } |
| 219 | pub fn index(&self) -> HashMap<&str, &SessionEntry> { |
| 220 | self.entries.iter().map(|e| (e.id.as_str(), e)).collect() |
| 221 | } |
| 222 | pub fn children_of(&self, parent_id: Option<&str>) -> Vec<&SessionEntry> { |
| 223 | self.entries |
| 224 | .iter() |
| 225 | .filter(|e| e.parent_id.as_deref() == parent_id) |
| 226 | .collect() |
| 227 | } |
| 228 | pub fn contains(&self, entry_id: &str) -> bool { |
| 229 | self.entries.iter().any(|e| e.id == entry_id) |
| 230 | } |
| 231 | pub fn leaf(&self) -> Option<&SessionEntry> { |
| 232 | self.leaf_id |
| 233 | .as_deref() |
| 234 | .and_then(|id| self.entries.iter().find(|e| e.id == id)) |
| 235 | } |
| 236 | pub fn root_to_leaf(&self) -> Vec<&SessionEntry> { |
| 237 | let index: HashMap<&str, &SessionEntry> = |
| 238 | self.entries.iter().map(|e| (e.id.as_str(), e)).collect(); |
| 239 | let mut path = Vec::new(); |
| 240 | let mut cur = self.leaf_id.as_deref(); |
| 241 | let mut seen = HashSet::new(); |
| 242 | while let Some(id) = cur { |
| 243 | if !seen.insert(id) { |
| 244 | break; |
| 245 | } |
| 246 | if let Some(entry) = index.get(id) { |
| 247 | path.push(*entry); |
| 248 | cur = entry.parent_id.as_deref(); |
| 249 | } else { |
| 250 | break; |
| 251 | } |
| 252 | } |
| 253 | path.reverse(); |
| 254 | path |
| 255 | } |
| 256 | pub fn active_messages(&self, include_system: bool) -> Vec<Message> { |
| 257 | self.root_to_leaf() |
| 258 | .into_iter() |
| 259 | .filter_map(|e| { |
| 260 | if !include_system && !e.kind.is_contextual() { |
| 261 | return None; |
| 262 | } |
| 263 | e.kind.as_message() |
| 264 | }) |
| 265 | .collect() |
| 266 | } |
| 267 | pub fn leaves(&self) -> Vec<&SessionEntry> { |
| 268 | let parents: HashSet<&str> = self |
| 269 | .entries |
| 270 | .iter() |
| 271 | .filter_map(|e| e.parent_id.as_deref()) |
| 272 | .collect(); |
| 273 | self.entries |
| 274 | .iter() |
| 275 | .filter(|e| !parents.contains(e.id.as_str())) |
| 276 | .collect() |
| 277 | } |
| 278 | pub fn is_empty(&self) -> bool { |
| 279 | self.entries.is_empty() |
| 280 | } |
| 281 | pub fn len(&self) -> usize { |
| 282 | self.entries.len() |
| 283 | } |
| 284 | pub fn validate(&self) -> Result<(), String> { |
| 285 | let ids: HashSet<&str> = self.entries.iter().map(|e| e.id.as_str()).collect(); |
| 286 | for entry in &self.entries { |
| 287 | if let Some(parent) = entry.parent_id.as_deref() |
| 288 | && !ids.contains(parent) |
| 289 | { |
| 290 | return Err(format!("entry {} missing parent {}", entry.id, parent)); |
| 291 | } |
| 292 | } |
| 293 | if let Some(leaf) = self.leaf_id.as_deref() |
| 294 | && !ids.contains(leaf) |
| 295 | { |
| 296 | return Err(format!("leaf {leaf} not found")); |
| 297 | } |
| 298 | Ok(()) |
| 299 | } |
| 300 | pub fn from_messages(messages: Vec<Message>, spawn_depth: u32) -> Self { |
| 301 | let mut j = Self::with_spawn_depth(spawn_depth); |
| 302 | for msg in messages { |
| 303 | j.append(SessionEntryKind::Message { message: msg }); |
| 304 | } |
| 305 | j |
| 306 | } |
| 307 | /// Build the journal honoring a per-message append stamp. `stamps[i]` is |
| 308 | /// the time `messages[i]` entered the conversation; a missing stamp falls |
| 309 | /// back to now, so a drifted caller degrades to save-time ordering rather |
| 310 | /// than dropping the message. |
| 311 | pub fn from_messages_stamped( |
| 312 | messages: Vec<Message>, |
| 313 | stamps: &[DateTime<Utc>], |
| 314 | spawn_depth: u32, |
| 315 | ) -> Self { |
| 316 | let mut j = Self::with_spawn_depth(spawn_depth); |
| 317 | for (index, msg) in messages.into_iter().enumerate() { |
| 318 | let created_at = stamps.get(index).copied().unwrap_or_else(Utc::now); |
| 319 | j.append_stamped(SessionEntryKind::Message { message: msg }, created_at); |
| 320 | } |
| 321 | j |
| 322 | } |
| 323 | pub fn to_messages(&self) -> Vec<Message> { |
| 324 | self.active_messages(true) |
| 325 | } |
| 326 | |
| 327 | /// Make `messages` the active projection without rewriting the journal. |
| 328 | /// |
| 329 | /// The existing active branch remains as evidence. We reuse its longest |
| 330 | /// unchanged prefix, then append the repaired suffix as a sibling branch. |
| 331 | pub fn rebranch_active_messages(&mut self, messages: &[Message]) { |
| 332 | self.rebranch_active_messages_stamped(messages, &[]); |
| 333 | } |
| 334 | |
| 335 | /// Preserve existing entry identity and timestamps; only append the changed |
| 336 | /// suffix, keeping the previous branch reachable. |
| 337 | pub fn rebranch_active_messages_stamped( |
| 338 | &mut self, |
| 339 | messages: &[Message], |
| 340 | stamps: &[DateTime<Utc>], |
| 341 | ) { |
| 342 | let active_path = self.root_to_leaf(); |
| 343 | let shared_prefix = active_path |
| 344 | .iter() |
| 345 | .zip(messages) |
| 346 | .take_while(|(entry, message)| entry.kind.as_message().as_ref() == Some(*message)) |
| 347 | .count(); |
| 348 | self.leaf_id = shared_prefix |
| 349 | .checked_sub(1) |
| 350 | .map(|index| active_path[index].id.clone()); |
| 351 | for (index, message) in messages.iter().enumerate().skip(shared_prefix) { |
| 352 | self.append_stamped( |
| 353 | SessionEntryKind::Message { |
| 354 | message: message.clone(), |
| 355 | }, |
| 356 | stamps.get(index).copied().unwrap_or_else(Utc::now), |
| 357 | ); |
| 358 | } |
| 359 | } |
| 360 | } |
| 361 | #[derive(Debug, Clone, Serialize, Deserialize, PartialEq)] |
| 362 | pub struct SessionImportContainer { |
| 363 | pub format_version: u32, |
| 364 | pub source: String, |
| 365 | pub metadata: Option<serde_json::Value>, |
| 366 | pub entries: Vec<SessionEntry>, |
| 367 | #[serde(default, skip_serializing_if = "Option::is_none")] |
| 368 | pub leaf_id: Option<EntryId>, |
| 369 | pub exported_at: DateTime<Utc>, |
| 370 | #[serde(default)] |
| 371 | pub spawn_depth: u32, |
| 372 | } |
| 373 | impl SessionImportContainer { |
| 374 | pub fn new( |
| 375 | source: String, |
| 376 | journal: &SessionJournal, |
| 377 | metadata: Option<serde_json::Value>, |
| 378 | ) -> Self { |
| 379 | Self { |
| 380 | format_version: CURRENT_JOURNAL_SCHEMA_VERSION, |
| 381 | source, |
| 382 | metadata, |
| 383 | entries: journal.entries.clone(), |
| 384 | leaf_id: journal.leaf_id.clone(), |
| 385 | exported_at: Utc::now(), |
| 386 | spawn_depth: journal.spawn_depth, |
| 387 | } |
| 388 | } |
| 389 | pub fn into_journal(self) -> Result<SessionJournal, String> { |
| 390 | let j = SessionJournal { |
| 391 | entries: self.entries, |
| 392 | leaf_id: self.leaf_id, |
| 393 | schema_version: self.format_version, |
| 394 | spawn_depth: self.spawn_depth, |
| 395 | }; |
| 396 | j.validate()?; |
| 397 | Ok(j) |
| 398 | } |
| 399 | pub fn to_json(&self) -> Result<String, serde_json::Error> { |
| 400 | serde_json::to_string_pretty(self) |
| 401 | } |
| 402 | pub fn from_json(json: &str) -> Result<Self, serde_json::Error> { |
| 403 | serde_json::from_str(json) |
| 404 | } |
| 405 | } |
| 406 | pub fn render_tree(journal: &SessionJournal) -> String { |
| 407 | if journal.entries.is_empty() { |
| 408 | return "(empty session — no entries yet)".to_string(); |
| 409 | } |
| 410 | let index = journal.index(); |
| 411 | let mut out = String::new(); |
| 412 | let mut children: HashMap<Option<&str>, Vec<&SessionEntry>> = HashMap::new(); |
| 413 | for entry in &journal.entries { |
| 414 | children |
| 415 | .entry(entry.parent_id.as_deref()) |
| 416 | .or_default() |
| 417 | .push(entry); |
| 418 | } |
| 419 | let active_ids: HashSet<&str> = journal |
| 420 | .root_to_leaf() |
| 421 | .iter() |
| 422 | .map(|e| e.id.as_str()) |
| 423 | .collect(); |
| 424 | let leaf = journal.leaf_id.as_deref(); |
| 425 | fn render_node( |
| 426 | out: &mut String, |
| 427 | children: &HashMap<Option<&str>, Vec<&SessionEntry>>, |
| 428 | active_ids: &HashSet<&str>, |
| 429 | leaf: Option<&str>, |
| 430 | parent: Option<&str>, |
| 431 | depth: usize, |
| 432 | ) { |
| 433 | let Some(nodes) = children.get(&parent) else { |
| 434 | return; |
| 435 | }; |
| 436 | for (idx, entry) in nodes.iter().enumerate() { |
| 437 | let is_last = idx + 1 == nodes.len(); |
| 438 | let prefix = if depth == 0 { |
| 439 | "".to_string() |
| 440 | } else { |
| 441 | let mut p = String::new(); |
| 442 | for _ in 0..depth - 1 { |
| 443 | p.push_str("│ "); |
| 444 | } |
| 445 | if is_last { |
| 446 | p.push_str("└─ "); |
| 447 | } else { |
| 448 | p.push_str("├─ "); |
| 449 | } |
| 450 | p |
| 451 | }; |
| 452 | let marker = if Some(entry.id.as_str()) == leaf { |
| 453 | "*" |
| 454 | } else if active_ids.contains(entry.id.as_str()) { |
| 455 | "●" |
| 456 | } else { |
| 457 | "○" |
| 458 | }; |
| 459 | let kind_label = match &entry.kind { |
| 460 | SessionEntryKind::Message { message } => { |
| 461 | let role = &message.role; |
| 462 | let snippet: String = message |
| 463 | .content |
| 464 | .iter() |
| 465 | .filter_map(|b| match b { |
| 466 | ContentBlock::Text { text, .. } => Some(text.as_str()), |
| 467 | _ => None, |
| 468 | }) |
| 469 | .collect::<Vec<_>>() |
| 470 | .join(" "); |
| 471 | let short: String = snippet.chars().take(60).collect(); |
| 472 | format!("{role}: {short}") |
| 473 | } |
| 474 | SessionEntryKind::User { text } => { |
| 475 | let short: String = text.chars().take(60).collect(); |
| 476 | format!("user: {short}") |
| 477 | } |
| 478 | SessionEntryKind::Assistant { text } => { |
| 479 | let short: String = text.chars().take(60).collect(); |
| 480 | format!("assistant: {short}") |
| 481 | } |
| 482 | SessionEntryKind::Compaction { summary, .. } => { |
| 483 | let short: String = summary.chars().take(60).collect(); |
| 484 | format!("compaction: {short}") |
| 485 | } |
| 486 | SessionEntryKind::BranchSummary { |
| 487 | branch_id, summary, .. |
| 488 | } => { |
| 489 | let short: String = summary.chars().take(60).collect(); |
| 490 | format!("branch:{} {short}", &branch_id[..branch_id.len().min(8)]) |
| 491 | } |
| 492 | SessionEntryKind::System { content } => { |
| 493 | let short: String = content.chars().take(60).collect(); |
| 494 | format!("system: {short}") |
| 495 | } |
| 496 | }; |
| 497 | out.push_str(&format!( |
| 498 | "{prefix}{marker} {} [{}] {kind_label}\n", |
| 499 | entry.short_id(), |
| 500 | entry.id |
| 501 | )); |
| 502 | render_node(out, children, active_ids, leaf, Some(&entry.id), depth + 1); |
| 503 | } |
| 504 | } |
| 505 | render_node(&mut out, &children, &active_ids, leaf, None, 0); |
| 506 | let _ = index; |
| 507 | if let Some(leaf_id) = leaf { |
| 508 | out.push_str(&format!( |
| 509 | "\nleaf: {leaf_id} (active, {} entries)\n", |
| 510 | journal.entries.len() |
| 511 | )); |
| 512 | } |
| 513 | out |
| 514 | } |
| 515 | #[cfg(test)] |
| 516 | mod tests { |
| 517 | use super::*; |
| 518 | use codewhale_models::{ContentBlock, Message, Role}; |
| 519 | fn msg(role: &str, text: &str) -> Message { |
| 520 | Message { |
| 521 | role: Role::from(role), |
| 522 | content: vec![ContentBlock::Text { |
| 523 | text: text.to_string(), |
| 524 | cache_control: None, |
| 525 | }], |
| 526 | } |
| 527 | } |
| 528 | #[test] |
| 529 | fn append_creates_child_of_leaf() { |
| 530 | let mut j = SessionJournal::new(); |
| 531 | let a = j.append(SessionEntryKind::User { |
| 532 | text: "hello".into(), |
| 533 | }); |
| 534 | let b = j.append(SessionEntryKind::Assistant { |
| 535 | text: "world".into(), |
| 536 | }); |
| 537 | assert_eq!(j.leaf_id.as_deref(), Some(b.as_str())); |
| 538 | let be = j.entries.iter().find(|e| e.id == b).unwrap(); |
| 539 | assert_eq!(be.parent_id.as_deref(), Some(a.as_str())); |
| 540 | } |
| 541 | #[test] |
| 542 | fn branch_moves_leaf_only() { |
| 543 | let mut j = SessionJournal::new(); |
| 544 | let a = j.append(SessionEntryKind::User { text: "a".into() }); |
| 545 | let b = j.append(SessionEntryKind::User { text: "b".into() }); |
| 546 | let _c = j.append(SessionEntryKind::User { text: "c".into() }); |
| 547 | j.branch_to(&a).unwrap(); |
| 548 | let d = j.append(SessionEntryKind::User { text: "d".into() }); |
| 549 | assert_eq!(j.entries.len(), 4); |
| 550 | assert_eq!(j.leaf_id.as_deref(), Some(d.as_str())); |
| 551 | let path: Vec<String> = j.root_to_leaf().iter().map(|e| e.id.clone()).collect(); |
| 552 | assert_eq!(path, vec![a.clone(), d.clone()]); |
| 553 | assert!(j.entries.iter().any(|e| e.id == b)); |
| 554 | } |
| 555 | #[test] |
| 556 | fn from_messages_migrates() { |
| 557 | let msgs = vec![msg("user", "hi"), msg("assistant", "hello")]; |
| 558 | let j = SessionJournal::from_messages(msgs, 0); |
| 559 | assert_eq!(j.entries.len(), 2); |
| 560 | assert!(j.validate().is_ok()); |
| 561 | assert_eq!(j.root_to_leaf().len(), 2); |
| 562 | } |
| 563 | #[test] |
| 564 | fn repaired_messages_form_an_append_only_sibling_branch() { |
| 565 | let original = vec![ |
| 566 | msg("user", "shared"), |
| 567 | msg("assistant", "broken"), |
| 568 | msg("user", "old tail"), |
| 569 | ]; |
| 570 | let mut journal = SessionJournal::from_messages(original, 0); |
| 571 | let old_leaf = journal.leaf_id.clone().expect("old leaf"); |
| 572 | let repaired = vec![ |
| 573 | msg("user", "shared"), |
| 574 | msg("assistant", "repaired"), |
| 575 | msg("user", "new tail"), |
| 576 | ]; |
| 577 | |
| 578 | journal.rebranch_active_messages(&repaired); |
| 579 | |
| 580 | assert_eq!(journal.to_messages(), repaired); |
| 581 | assert!(journal.contains(&old_leaf), "old evidence must remain"); |
| 582 | assert_eq!( |
| 583 | journal.entries.len(), |
| 584 | 5, |
| 585 | "one shared entry plus two branches" |
| 586 | ); |
| 587 | } |
| 588 | #[test] |
| 589 | fn stamped_rebranch_keeps_prefix_identity_and_suffix_stamps() { |
| 590 | let stamp = |secs: i64| DateTime::from_timestamp(secs, 0).expect("stamp"); |
| 591 | let mut j = SessionJournal::new(); |
| 592 | j.append_stamped( |
| 593 | SessionEntryKind::Message { |
| 594 | message: msg("user", "a"), |
| 595 | }, |
| 596 | stamp(100), |
| 597 | ); |
| 598 | j.append_stamped( |
| 599 | SessionEntryKind::Message { |
| 600 | message: msg("assistant", "b"), |
| 601 | }, |
| 602 | stamp(200), |
| 603 | ); |
| 604 | let a_id = j.entries[0].id.clone(); |
| 605 | j.rebranch_active_messages_stamped( |
| 606 | &[msg("user", "a"), msg("assistant", "b2")], |
| 607 | &[stamp(100), stamp(300)], |
| 608 | ); |
| 609 | assert_eq!(j.entries.len(), 3); |
| 610 | assert_eq!(j.entries[0].id, a_id, "shared prefix keeps its id"); |
| 611 | assert_eq!(j.entries[0].created_at, stamp(100)); |
| 612 | let path = j.root_to_leaf(); |
| 613 | assert_eq!(path.len(), 2); |
| 614 | assert_eq!( |
| 615 | path[1].created_at, |
| 616 | stamp(300), |
| 617 | "suffix keeps the live stamp" |
| 618 | ); |
| 619 | assert!( |
| 620 | j.entries |
| 621 | .iter() |
| 622 | .any(|e| e.kind.as_message().as_ref() == Some(&msg("assistant", "b"))), |
| 623 | "replaced suffix survives as a sibling" |
| 624 | ); |
| 625 | } |
| 626 | #[test] |
| 627 | fn compaction_fits() { |
| 628 | let mut j = SessionJournal::new(); |
| 629 | let id = j.append_compaction("summary".into(), Some(1000), Some(100), None); |
| 630 | assert!(j.contains(&id)); |
| 631 | assert!(matches!( |
| 632 | j.leaf().unwrap().kind, |
| 633 | SessionEntryKind::Compaction { .. } |
| 634 | )); |
| 635 | } |
| 636 | #[test] |
| 637 | fn branch_summary_fits() { |
| 638 | let mut j = SessionJournal::new(); |
| 639 | let a = j.append(SessionEntryKind::User { |
| 640 | text: "root".into(), |
| 641 | }); |
| 642 | let b = j.append_branch_summary(a.clone(), "branch summary".into(), None); |
| 643 | assert!(j.contains(&b)); |
| 644 | } |
| 645 | #[test] |
| 646 | fn spawn_depth_fork() { |
| 647 | let mut j = SessionJournal::with_spawn_depth(1); |
| 648 | let forked = j.fork_from(None).unwrap(); |
| 649 | assert_eq!(forked.spawn_depth, 2); |
| 650 | let a = j.append(SessionEntryKind::User { |
| 651 | text: "root".into(), |
| 652 | }); |
| 653 | let fork2 = j.fork_from(Some(&a)).unwrap(); |
| 654 | assert_eq!(fork2.spawn_depth, 2); |
| 655 | } |
| 656 | #[test] |
| 657 | fn foreign_roundtrip() { |
| 658 | let mut j = SessionJournal::new(); |
| 659 | j.append(SessionEntryKind::User { |
| 660 | text: "hello".into(), |
| 661 | }); |
| 662 | let c = SessionImportContainer::new("codewhale".into(), &j, None); |
| 663 | let json = c.to_json().unwrap(); |
| 664 | let back = SessionImportContainer::from_json(&json).unwrap(); |
| 665 | let j2 = back.into_journal().unwrap(); |
| 666 | assert_eq!(j.entries.len(), j2.entries.len()); |
| 667 | } |
| 668 | #[test] |
| 669 | fn render_marks_active() { |
| 670 | let mut j = SessionJournal::new(); |
| 671 | j.append(SessionEntryKind::User { |
| 672 | text: "root".into(), |
| 673 | }); |
| 674 | let tree = render_tree(&j); |
| 675 | assert!(tree.contains('*')); |
| 676 | } |
| 677 | #[test] |
| 678 | fn active_messages_root_to_leaf() { |
| 679 | let mut j = SessionJournal::new(); |
| 680 | j.append(SessionEntryKind::User { text: "a".into() }); |
| 681 | j.append(SessionEntryKind::User { text: "b".into() }); |
| 682 | let msgs = j.active_messages(false); |
| 683 | assert_eq!(msgs.len(), 2); |
| 684 | j.branch_to(&j.entries[0].id.clone()).unwrap(); |
| 685 | j.append(SessionEntryKind::User { text: "c".into() }); |
| 686 | let msgs2 = j.active_messages(false); |
| 687 | assert_eq!(msgs2.len(), 2); |
| 688 | } |
| 689 | } |
| 690 |