diff --git a/contracts/course-registry/src/lib.rs b/contracts/course-registry/src/lib.rs index 2d3c093..a04c1a8 100644 --- a/contracts/course-registry/src/lib.rs +++ b/contracts/course-registry/src/lib.rs @@ -34,6 +34,15 @@ pub struct CourseStatusChanged { pub active: bool, } +#[contractevent] +pub struct OwnershipTransferred { + #[topic] + pub course_id: u32, + #[topic] + pub previous_instructor: Address, + pub new_instructor: Address, +} + #[contractevent] pub struct ModuleCompleted { #[topic] @@ -263,6 +272,40 @@ impl CourseRegistry { env.storage().persistent().get(&key).unwrap_or(0) } + /// Transfers ownership of a course to a new instructor address. + /// Only callable by the current instructor of the course. + pub fn transfer_ownership( + env: Env, + current_instructor: Address, + new_instructor: Address, + course_id: u32, + ) { + let mut course: Course = env + .storage() + .persistent() + .get(&DataKey::Course(course_id)) + .expect("Course not found"); + + assert!( + course.instructor == current_instructor, + "Unauthorized: Caller is not the course instructor" + ); + + current_instructor.require_auth(); + + course.instructor = new_instructor.clone(); + env.storage() + .persistent() + .set(&DataKey::Course(course_id), &course); + + OwnershipTransferred { + course_id, + previous_instructor: current_instructor, + new_instructor, + } + .publish(&env); + } + /// Records a learner's completion of a module after off-chain quiz validation. /// Only callable by the authorized verifier (protocol admin). pub fn complete_module(env: Env, verifier: Address, learner: Address, id: u32) { diff --git a/contracts/course-registry/src/test.rs b/contracts/course-registry/src/test.rs index a0ab961..5f3513c 100644 --- a/contracts/course-registry/src/test.rs +++ b/contracts/course-registry/src/test.rs @@ -690,3 +690,87 @@ fn test_set_badge_nft_address_unauthorized_panics() { client.initialize(&admin); client.set_badge_nft_address(&fake_admin, &badge_address); } + +// ── transfer_ownership ──────────────────────────────────────────────────────── + +#[test] +fn test_transfer_ownership_success() { + let (env, client) = setup(); + let (_, instructor, id) = setup_with_course(&env, &client); + let new_instructor = Address::generate(&env); + + client.transfer_ownership(&instructor, &new_instructor, &id); + + let course = client.get_course(&id); + assert_eq!(course.instructor, new_instructor); +} + +#[test] +fn test_transfer_ownership_emits_event() { + let (env, client) = setup(); + let (_, instructor, id) = setup_with_course(&env, &client); + let new_instructor = Address::generate(&env); + + client.transfer_ownership(&instructor, &new_instructor, &id); + + // One OwnershipTransferred event must have been emitted + assert_eq!(env.events().all().len(), 1); +} + +#[test] +#[should_panic(expected = "Unauthorized: Caller is not the course instructor")] +fn test_transfer_ownership_non_instructor_panics() { + let (env, client) = setup(); + let (_, _, id) = setup_with_course(&env, &client); + let impostor = Address::generate(&env); + let new_instructor = Address::generate(&env); + + client.transfer_ownership(&impostor, &new_instructor, &id); +} + +#[test] +#[should_panic(expected = "Course not found")] +fn test_transfer_ownership_nonexistent_course_panics() { + let (env, client) = setup(); + let admin = Address::generate(&env); + let instructor = Address::generate(&env); + let new_instructor = Address::generate(&env); + + client.initialize(&admin); + + client.transfer_ownership(&instructor, &new_instructor, &99); +} + +#[test] +fn test_transfer_ownership_new_instructor_can_update_metadata() { + let (env, client) = setup(); + let (_, instructor, id) = setup_with_course(&env, &client); + let new_instructor = Address::generate(&env); + + client.transfer_ownership(&instructor, &new_instructor, &id); + + // New instructor must be able to update metadata after ownership transfer + let updated_hash = BytesN::from_array(&env, &[9u8; 32]); + client.update_metadata(&id, &updated_hash); + + let course = client.get_course(&id); + assert_eq!(course.metadata_hash, updated_hash); +} + +#[test] +fn test_transfer_ownership_updates_instructor_field() { + let (env, client) = setup(); + let (_, instructor, id) = setup_with_course(&env, &client); + let new_instructor = Address::generate(&env); + + // Confirm original instructor before transfer + let before = client.get_course(&id); + assert_eq!(before.instructor, instructor); + + client.transfer_ownership(&instructor, &new_instructor, &id); + + // Confirm instructor field reflects the new address after transfer + let after = client.get_course(&id); + assert_eq!(after.instructor, new_instructor); + assert_ne!(after.instructor, instructor); +} diff --git a/contracts/course-registry/test_snapshots/test/test_transfer_ownership_emits_event.1.json b/contracts/course-registry/test_snapshots/test/test_transfer_ownership_emits_event.1.json new file mode 100644 index 0000000..c3ea3dd --- /dev/null +++ b/contracts/course-registry/test_snapshots/test/test_transfer_ownership_emits_event.1.json @@ -0,0 +1,335 @@ +{ + "generators": { + "address": 4, + "nonce": 0, + "mux_id": 0 + }, + "auth": [ + [], + [], + [ + [ + "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4", + { + "function": { + "contract_fn": { + "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM", + "function_name": "create_course", + "args": [ + { + "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4" + }, + { + "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M" + }, + { + "u32": 5 + }, + { + "bytes": "0101010101010101010101010101010101010101010101010101010101010101" + } + ] + } + }, + "sub_invocations": [] + } + ] + ], + [ + [ + "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M", + { + "function": { + "contract_fn": { + "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM", + "function_name": 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a/contracts/course-registry/test_snapshots/test/test_transfer_ownership_nonexistent_course_panics.1.json b/contracts/course-registry/test_snapshots/test/test_transfer_ownership_nonexistent_course_panics.1.json new file mode 100644 index 0000000..c542bbb --- /dev/null +++ b/contracts/course-registry/test_snapshots/test/test_transfer_ownership_nonexistent_course_panics.1.json @@ -0,0 +1,91 @@ +{ + "generators": { + "address": 4, + "nonce": 0, + "mux_id": 0 + }, + "auth": [ + [], + [], + [] + ], + "ledger": { + "protocol_version": 23, + "sequence_number": 0, + "timestamp": 0, + "network_id": "0000000000000000000000000000000000000000000000000000000000000000", + "base_reserve": 0, + "min_persistent_entry_ttl": 4096, + "min_temp_entry_ttl": 16, + "max_entry_ttl": 6312000, + "ledger_entries": [ + [ + { + "contract_data": { + "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM", + "key": "ledger_key_contract_instance", + "durability": "persistent" + } + }, + [ + { + 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