| 1 | //! `/resume` command — portable handler over the session-control facet. |
| 2 | //! |
| 3 | //! The handler owns route selection and the exact per-route messages/actions; |
| 4 | //! filesystem, manager, parser, and picker machinery stay behind the facet's |
| 5 | //! `resolve_resume_source` / `import_session_file` / `open_resume_picker` |
| 6 | //! delegates (transition blocking is checked before any picker or I/O). |
| 7 | |
| 8 | use super::CommandResult; |
| 9 | use codewhale_command_contract::facets::{CommandSessionControlContext, ResumeSource}; |
| 10 | use codewhale_command_contract::handler::{CommandContexts, CommandHandler}; |
| 11 | use codewhale_command_contract::metadata::{ |
| 12 | CommandInfo as ContractInfo, RegisterCommand as ContractRegisterCommand, |
| 13 | }; |
| 14 | |
| 15 | pub(in crate::commands) struct ResumeCmd; |
| 16 | |
| 17 | pub(in crate::commands) const CONTRACT_INFO: ContractInfo = ContractInfo { |
| 18 | name: "resume", |
| 19 | aliases: &["r"], |
| 20 | usage: "/resume [session_id|path/to/export.json]", |
| 21 | description_key: "cmd_resume_description", |
| 22 | }; |
| 23 | |
| 24 | impl ContractRegisterCommand<CommandResult> for ResumeCmd { |
| 25 | fn info() -> &'static ContractInfo { |
| 26 | &CONTRACT_INFO |
| 27 | } |
| 28 | fn handler() -> CommandHandler<CommandResult> { |
| 29 | CommandHandler::Contextual { |
| 30 | capabilities: codewhale_command_contract::handler::CommandCapabilities::SESSION_CONTROL, |
| 31 | handler: resume_contextual, |
| 32 | } |
| 33 | } |
| 34 | } |
| 35 | |
| 36 | pub(in crate::commands) fn resume_contextual( |
| 37 | contexts: CommandContexts<'_>, |
| 38 | arg: Option<&str>, |
| 39 | ) -> CommandResult { |
| 40 | let mut parts = contexts.into_parts(); |
| 41 | let Some(control) = parts.control.as_deref_mut() else { |
| 42 | return CommandResult::error("Command capability unavailable: session_control".to_string()); |
| 43 | }; |
| 44 | resume_portable(control, arg) |
| 45 | } |
| 46 | |
| 47 | pub(in crate::commands) fn resume_portable( |
| 48 | control: &mut dyn CommandSessionControlContext, |
| 49 | arg: Option<&str>, |
| 50 | ) -> CommandResult { |
| 51 | if control.transition_blocked() { |
| 52 | return CommandResult::error( |
| 53 | "Cannot resume while runtime work is active. Wait for the turn to finish, or cancel it first.", |
| 54 | ); |
| 55 | } |
| 56 | let Some(raw) = arg.map(str::trim).filter(|s| !s.is_empty()) else { |
| 57 | control.open_resume_picker(); |
| 58 | return CommandResult::ok(); |
| 59 | }; |
| 60 | match control.resolve_resume_source(raw) { |
| 61 | Ok(ResumeSource::File(path)) => match control.import_session_file(path) { |
| 62 | Ok(receipt) => CommandResult::with_message_and_action( |
| 63 | format!( |
| 64 | "Imported foreign session as {} ({} entries, leaf {})", |
| 65 | receipt.truncated_id, receipt.entry_count, receipt.leaf_display |
| 66 | ), |
| 67 | codewhale_command_contract::outcome::SessionAction::SyncSession(receipt.sync), |
| 68 | ), |
| 69 | Err(error) => CommandResult::error(error), |
| 70 | }, |
| 71 | Ok(ResumeSource::Imported(receipt)) => CommandResult::with_message_and_action( |
| 72 | format!( |
| 73 | "Imported foreign session as {} ({} entries, leaf {})", |
| 74 | receipt.truncated_id, receipt.entry_count, receipt.leaf_display |
| 75 | ), |
| 76 | codewhale_command_contract::outcome::SessionAction::SyncSession(receipt.sync), |
| 77 | ), |
| 78 | Ok(ResumeSource::Session { |
| 79 | load_path, |
| 80 | truncated_id, |
| 81 | title, |
| 82 | }) => match load_path { |
| 83 | Some(path) => CommandResult::action( |
| 84 | codewhale_command_contract::outcome::SessionAction::LoadSession(path), |
| 85 | ), |
| 86 | None => CommandResult::message(format!("Resuming session {truncated_id} ({title})")), |
| 87 | }, |
| 88 | Ok(ResumeSource::NotFound { raw, error }) => CommandResult::error(format!( |
| 89 | "Cannot resume '{raw}': {error}\nUse `/resume` without args to pick, or pass a session id, or a path to an exported session JSON." |
| 90 | )), |
| 91 | Err(error) => CommandResult::error(error), |
| 92 | } |
| 93 | } |
| 94 | |
| 95 | #[cfg(test)] |
| 96 | mod tests { |
| 97 | use super::super::control_test_support::message; |
| 98 | use super::*; |
| 99 | use codewhale_command_contract::facets::ResumeImportReceipt; |
| 100 | use std::path::PathBuf; |
| 101 | |
| 102 | fn control_fake() -> super::super::control_test_support::FakeControl { |
| 103 | super::super::control_test_support::FakeControl::default() |
| 104 | } |
| 105 | |
| 106 | #[test] |
| 107 | fn resume_transition_blocking_wins_before_any_route() { |
| 108 | let mut fake = control_fake(); |
| 109 | fake.blocked = true; |
| 110 | let result = resume_portable(&mut fake, Some("anything")); |
| 111 | assert!(result.is_error); |
| 112 | assert_eq!( |
| 113 | message(&result), |
| 114 | "Cannot resume while runtime work is active. Wait for the turn to finish, or cancel it first." |
| 115 | ); |
| 116 | assert_eq!( |
| 117 | fake.calls.borrow().as_slice(), |
| 118 | ["transition_blocked"], |
| 119 | "the gate executes exactly once before route work" |
| 120 | ); |
| 121 | } |
| 122 | |
| 123 | #[test] |
| 124 | fn resume_bare_opens_the_picker() { |
| 125 | let mut fake = control_fake(); |
| 126 | let result = resume_portable(&mut fake, None); |
| 127 | assert!(!result.is_error); |
| 128 | assert!(result.action.is_none()); |
| 129 | assert!(result.message.is_none()); |
| 130 | assert_eq!( |
| 131 | fake.calls.borrow().as_slice(), |
| 132 | ["transition_blocked", "open_resume_picker"] |
| 133 | ); |
| 134 | } |
| 135 | |
| 136 | #[test] |
| 137 | fn resume_file_and_import_routes_compose_exact_receipts() { |
| 138 | let mut fake = control_fake(); |
| 139 | fake.resume = Some(Ok(ResumeSource::File(PathBuf::from("/tmp/import.json")))); |
| 140 | fake.import = Some(Ok(ResumeImportReceipt { |
| 141 | truncated_id: "imp-9".to_string(), |
| 142 | entry_count: 12, |
| 143 | leaf_display: "leaf-3".to_string(), |
| 144 | sync: super::super::lifecycle_test_support::sync_payload("imp-9"), |
| 145 | })); |
| 146 | let result = resume_portable(&mut fake, Some("/tmp/import.json")); |
| 147 | assert!(!result.is_error); |
| 148 | assert_eq!( |
| 149 | message(&result), |
| 150 | "Imported foreign session as imp-9 (12 entries, leaf leaf-3)" |
| 151 | ); |
| 152 | // The engine must adopt the imported conversation; a message-only |
| 153 | // result would leave it on the previous session. |
| 154 | assert!( |
| 155 | matches!( |
| 156 | result.action, |
| 157 | Some(codewhale_command_contract::outcome::SessionAction::SyncSession(codewhale_command_contract::facets::SessionSyncPayload { ref session_id, .. })) |
| 158 | if session_id.as_deref() == Some("imp-9") |
| 159 | ), |
| 160 | "{result:?}" |
| 161 | ); |
| 162 | |
| 163 | let mut fake = control_fake(); |
| 164 | fake.resume = Some(Ok(ResumeSource::File(PathBuf::from("/tmp/x.json")))); |
| 165 | fake.import = Some(Err( |
| 166 | "File x.json is not a recognized session export".to_string() |
| 167 | )); |
| 168 | let result = resume_portable(&mut fake, Some("/tmp/x.json")); |
| 169 | assert!(result.is_error); |
| 170 | assert_eq!( |
| 171 | message(&result), |
| 172 | "File x.json is not a recognized session export" |
| 173 | ); |
| 174 | |
| 175 | let mut fake = control_fake(); |
| 176 | fake.resume = Some(Ok(ResumeSource::Imported(ResumeImportReceipt { |
| 177 | truncated_id: "c-1".to_string(), |
| 178 | entry_count: 0, |
| 179 | leaf_display: "(none)".to_string(), |
| 180 | sync: super::super::lifecycle_test_support::sync_payload("c-1"), |
| 181 | }))); |
| 182 | let result = resume_portable(&mut fake, Some("inline-json")); |
| 183 | assert_eq!( |
| 184 | message(&result), |
| 185 | "Imported foreign session as c-1 (0 entries, leaf (none))" |
| 186 | ); |
| 187 | assert!( |
| 188 | matches!( |
| 189 | result.action, |
| 190 | Some(codewhale_command_contract::outcome::SessionAction::SyncSession(codewhale_command_contract::facets::SessionSyncPayload { ref session_id, .. })) |
| 191 | if session_id.as_deref() == Some("c-1") |
| 192 | ), |
| 193 | "{result:?}" |
| 194 | ); |
| 195 | } |
| 196 | |
| 197 | #[test] |
| 198 | fn resume_session_and_not_found_routes_are_exact() { |
| 199 | let mut fake = control_fake(); |
| 200 | fake.resume = Some(Ok(ResumeSource::Session { |
| 201 | load_path: Some(PathBuf::from("/tmp/sessions/abc123.json")), |
| 202 | truncated_id: "abc123".to_string(), |
| 203 | title: "Control Session".to_string(), |
| 204 | })); |
| 205 | let result = resume_portable(&mut fake, Some("abc123")); |
| 206 | assert!(!result.is_error); |
| 207 | assert!(matches!( |
| 208 | result.action, |
| 209 | Some(codewhale_command_contract::outcome::SessionAction::LoadSession(path)) if path == *"/tmp/sessions/abc123.json" |
| 210 | )); |
| 211 | |
| 212 | let mut fake = control_fake(); |
| 213 | fake.resume = Some(Ok(ResumeSource::Session { |
| 214 | load_path: None, |
| 215 | truncated_id: "abc123".to_string(), |
| 216 | title: "Control Session".to_string(), |
| 217 | })); |
| 218 | let result = resume_portable(&mut fake, Some("abc123")); |
| 219 | assert_eq!( |
| 220 | message(&result), |
| 221 | "Resuming session abc123 (Control Session)" |
| 222 | ); |
| 223 | |
| 224 | let mut fake = control_fake(); |
| 225 | fake.resume = Some(Ok(ResumeSource::NotFound { |
| 226 | raw: "nope".to_string(), |
| 227 | error: "no such session".to_string(), |
| 228 | })); |
| 229 | let result = resume_portable(&mut fake, Some("nope")); |
| 230 | assert!(result.is_error); |
| 231 | assert_eq!( |
| 232 | message(&result), |
| 233 | "Cannot resume 'nope': no such session\nUse `/resume` without args to pick, or pass a session id, or a path to an exported session JSON." |
| 234 | ); |
| 235 | } |
| 236 | |
| 237 | #[test] |
| 238 | fn resume_host_lookup_errors_pass_through() { |
| 239 | let mut fake = control_fake(); |
| 240 | fake.resume = Some(Err("could not open sessions directory: boom".to_string())); |
| 241 | let result = resume_portable(&mut fake, Some("abc")); |
| 242 | assert!(result.is_error); |
| 243 | assert_eq!(message(&result), "could not open sessions directory: boom"); |
| 244 | } |
| 245 | |
| 246 | #[test] |
| 247 | fn resume_missing_control_authority_fails_safely() { |
| 248 | let contexts = codewhale_command_contract::handler::CommandContexts::empty(); |
| 249 | let result = resume_contextual(contexts, None); |
| 250 | assert!(result.is_error); |
| 251 | assert_eq!( |
| 252 | message(&result), |
| 253 | "Command capability unavailable: session_control" |
| 254 | ); |
| 255 | } |
| 256 | } |
| 257 |