Merge pull request #494 from Josue19-08/feat/insurance-policy-lifecycle

[Contract] Build Insurance Policy Lifecycle

Author: truthixify

contracts/assetsup/src/detokenization.rs

@@ -40,12 +40,13 @@ pub fn propose_detokenization(env: &Env, asset_id: u64, proposer: Address) -> Re
 }
 
 /// Execute detokenization if vote passed
+/// This will remove all tokens from circulation and clear tokenization records
 pub fn execute_detokenization(env: &Env, asset_id: u64, proposal_id: u64) -> Result<(), Error> {
     let store = env.storage().persistent();
 
     // Verify asset is tokenized
     let key = TokenDataKey::TokenizedAsset(asset_id);
-    let _: TokenizedAsset = store.get(&key).ok_or(Error::AssetNotTokenized)?;
+    let tokenized_asset: TokenizedAsset = store.get(&key).ok_or(Error::AssetNotTokenized)?;
 
     // Check if proposal is active
     let proposal_key = TokenDataKey::DetokenizationProposal(asset_id);
@@ -64,6 +65,65 @@ pub fn execute_detokenization(env: &Env, asset_id: u64, proposal_id: u64) -> Res
         return Err(Error::DetokenizationNotApproved);
     }
 
+    // Save total supply for event before clearing
+    let total_supply = tokenized_asset.total_supply;
+
+    // Clear all votes BEFORE removing TokenizedAsset (voting module needs it)
+    voting::clear_proposal_votes(env, asset_id, proposal_id)?;
+
+    // Get list of all token holders before clearing
+    let holders_list_key = TokenDataKey::TokenHoldersList(asset_id);
+    let holders = store.get::<_, soroban_sdk::Vec<Address>>(&holders_list_key)
+        .ok_or(Error::AssetNotTokenized)?;
+
+    // Remove all token holder records
+    for holder in holders.iter() {
+        let holder_key = TokenDataKey::TokenHolder(asset_id, holder.clone());
+        if store.has(&holder_key) {
+            store.remove(&holder_key);
+        }
+
+        // Remove any token locks
+        let lock_key = TokenDataKey::TokenLockedUntil(asset_id, holder.clone());
+        if store.has(&lock_key) {
+            store.remove(&lock_key);
+        }
+
+        // Remove unclaimed dividends
+        let dividend_key = TokenDataKey::UnclaimedDividend(asset_id, holder);
+        if store.has(&dividend_key) {
+            store.remove(&dividend_key);
+        }
+    }
+
+    // Remove token holders list
+    if store.has(&holders_list_key) {
+        store.remove(&holders_list_key);
+    }
+
+    // Remove transfer restrictions
+    let restriction_key = TokenDataKey::TransferRestriction(asset_id);
+    if store.has(&restriction_key) {
+        store.remove(&restriction_key);
+    }
+
+    // Remove whitelist
+    let whitelist_key = TokenDataKey::Whitelist(asset_id);
+    if store.has(&whitelist_key) {
+        store.remove(&whitelist_key);
+    }
+
+    // Remove token metadata
+    let metadata_key = TokenDataKey::TokenMetadata(asset_id);
+    if store.has(&metadata_key) {
+        store.remove(&metadata_key);
+    }
+
+    // Remove the tokenized asset record (this eliminates all tokens from circulation)
+    if store.has(&key) {
+        store.remove(&key);
+    }
+
     // Update proposal to executed
     let timestamp = env.ledger().timestamp();
     let executed_proposal = DetokenizationProposal::Executed(ExecutedProposal {
@@ -72,13 +132,10 @@ pub fn execute_detokenization(env: &Env, asset_id: u64, proposal_id: u64) -> Res
     });
     store.set(&proposal_key, &executed_proposal);
 
-    // Clear all votes
-    voting::clear_proposal_votes(env, asset_id, proposal_id)?;
-
-    // Emit event: (asset_id, proposal_id)
+    // Emit event: (asset_id, proposal_id, total_supply_removed)
     env.events().publish(
         ("detokenization", "asset_detokenized"),
-        (asset_id, proposal_id),
+        (asset_id, proposal_id, total_supply),
     );
 
     Ok(())

contracts/assetsup/src/insurance.rs

@@ -26,11 +26,10 @@ pub enum ClaimStatus {
 #[contracttype]
 #[derive(Clone, Debug, Eq, PartialEq)]
 pub enum PolicyType {
-    Comprehensive,
-    Theft,
-    Damage,
     Liability,
-    BusinessInterruption,
+    Property,
+    Comprehensive,
+    Custom,
 }
 
 #[contracttype]
@@ -50,6 +49,7 @@ pub struct InsurancePolicy {
     pub holder: Address,
     pub insurer: Address,
     pub asset_id: BytesN<32>,
+    pub policy_type: PolicyType,
     pub coverage_amount: i128,
     pub deductible: i128,
     pub premium: i128,
@@ -81,22 +81,41 @@ pub enum DataKey {
     AssetPolicies(BytesN<32>),
 }
 
+/// Create a new insurance policy with date validation and asset indexing
 pub fn create_policy(env: Env, policy: InsurancePolicy) -> Result<(), Error> {
-    policy.insurer.require_auth();
-
+    // Validate coverage and deductible
     if policy.coverage_amount <= 0 || policy.deductible >= policy.coverage_amount {
         return Err(Error::InvalidPayment);
     }
 
+    // Validate premium
+    if policy.premium <= 0 {
+        return Err(Error::InvalidPayment);
+    }
+
+    // Validate dates: start_date must be before end_date
+    if policy.start_date >= policy.end_date {
+        return Err(Error::InvalidPayment);
+    }
+
+    // Validate that start_date is not in the past (allow current timestamp)
+    let current_time = env.ledger().timestamp();
+    if policy.start_date < current_time {
+        return Err(Error::InvalidPayment);
+    }
+
     let key = DataKey::Policy(policy.policy_id.clone());
     let store = env.storage().persistent();
 
+    // Check if policy already exists
     if store.has(&key) {
         return Err(Error::AssetAlreadyExists);
     }
 
+    // Store the policy
     store.set(&key, &policy);
 
+    // Maintain asset index: add policy to asset's policy list
     let mut list: Vec<BytesN<32>> = store
         .get(&DataKey::AssetPolicies(policy.asset_id.clone()))
         .unwrap_or_else(|| Vec::new(&env));
@@ -108,6 +127,135 @@ pub fn create_policy(env: Env, policy: InsurancePolicy) -> Result<(), Error> {
     Ok(())
 }
 
+/// Cancel a policy (authorized by holder or insurer)
+pub fn cancel_policy(env: Env, policy_id: BytesN<32>, caller: Address) -> Result<(), Error> {
+    let store = env.storage().persistent();
+    let key = DataKey::Policy(policy_id.clone());
+
+    let mut policy: InsurancePolicy = store.get(&key).ok_or(Error::AssetNotFound)?;
+
+    // Only holder or insurer can cancel
+    if caller != policy.holder && caller != policy.insurer {
+        return Err(Error::Unauthorized);
+    }
+
+    // Validate status transition: only Active or Suspended policies can be cancelled
+    if policy.status != PolicyStatus::Active && policy.status != PolicyStatus::Suspended {
+        return Err(Error::Unauthorized);
+    }
+
+    policy.status = PolicyStatus::Cancelled;
+    store.set(&key, &policy);
+
+    log!(&env, "PolicyCancelled: {:?}", policy_id);
+    Ok(())
+}
+
+/// Suspend a policy (insurer only)
+pub fn suspend_policy(env: Env, policy_id: BytesN<32>, insurer: Address) -> Result<(), Error> {
+    let store = env.storage().persistent();
+    let key = DataKey::Policy(policy_id.clone());
+
+    let mut policy: InsurancePolicy = store.get(&key).ok_or(Error::AssetNotFound)?;
+
+    // Only insurer can suspend
+    if insurer != policy.insurer {
+        return Err(Error::Unauthorized);
+    }
+
+    // Validate status transition: only Active policies can be suspended
+    if policy.status != PolicyStatus::Active {
+        return Err(Error::Unauthorized);
+    }
+
+    policy.status = PolicyStatus::Suspended;
+    store.set(&key, &policy);
+
+    log!(&env, "PolicySuspended: {:?}", policy_id);
+    Ok(())
+}
+
+/// Expire a policy (permissionless, but requires end_date < current timestamp)
+pub fn expire_policy(env: Env, policy_id: BytesN<32>) -> Result<(), Error> {
+    let store = env.storage().persistent();
+    let key = DataKey::Policy(policy_id.clone());
+
+    let mut policy: InsurancePolicy = store.get(&key).ok_or(Error::AssetNotFound)?;
+
+    let current_time = env.ledger().timestamp();
+
+    // Require that end_date has passed
+    if policy.end_date >= current_time {
+        return Err(Error::Unauthorized);
+    }
+
+    // Validate status transition: only Active or Suspended policies can expire
+    if policy.status != PolicyStatus::Active && policy.status != PolicyStatus::Suspended {
+        return Err(Error::Unauthorized);
+    }
+
+    policy.status = PolicyStatus::Expired;
+    store.set(&key, &policy);
+
+    log!(&env, "PolicyExpired: {:?}", policy_id);
+    Ok(())
+}
+
+/// Renew a policy (insurer only)
+pub fn renew_policy(
+    env: Env,
+    policy_id: BytesN<32>,
+    new_end_date: u64,
+    new_premium: i128,
+    insurer: Address,
+) -> Result<(), Error> {
+    let store = env.storage().persistent();
+    let key = DataKey::Policy(policy_id.clone());
+
+    let mut policy: InsurancePolicy = store.get(&key).ok_or(Error::AssetNotFound)?;
+
+    // Only insurer can renew
+    if insurer != policy.insurer {
+        return Err(Error::Unauthorized);
+    }
+
+    // Validate status transition: only Active or Expired policies can be renewed
+    if policy.status != PolicyStatus::Active && policy.status != PolicyStatus::Expired {
+        return Err(Error::Unauthorized);
+    }
+
+    let current_time = env.ledger().timestamp();
+
+    // Validate new end date is in the future
+    if new_end_date <= current_time {
+        return Err(Error::InvalidPayment);
+    }
+
+    // Validate new premium is positive
+    if new_premium <= 0 {
+        return Err(Error::InvalidPayment);
+    }
+
+    // Update policy
+    policy.end_date = new_end_date;
+    policy.premium = new_premium;
+    policy.status = PolicyStatus::Active;
+    policy.last_payment = current_time;
+
+    store.set(&key, &policy);
+
+    log!(&env, "PolicyRenewed: {:?}", policy_id);
+    Ok(())
+}
+
+/// Get all policies for a specific asset
+pub fn get_asset_policies(env: Env, asset_id: BytesN<32>) -> Vec<BytesN<32>> {
+    env.storage()
+        .persistent()
+        .get(&DataKey::AssetPolicies(asset_id))
+        .unwrap_or_else(|| Vec::new(&env))
+}
+
 pub fn file_claim(env: Env, claim: InsuranceClaim) -> Result<(), Error> {
     claim.claimant.require_auth();
 

contracts/assetsup/src/lib.rs

@@ -770,4 +770,64 @@ impl AssetUpContract {
     pub fn is_detokenization_active(env: Env, asset_id: u64) -> Result<bool, Error> {
         detokenization::is_detokenization_active(&env, asset_id)
     }
+
+    // =====================
+    // Insurance Policy Management
+    // =====================
+
+    /// Create a new insurance policy
+    pub fn create_insurance_policy(
+        env: Env,
+        policy: insurance::InsurancePolicy,
+    ) -> Result<(), Error> {
+        policy.insurer.require_auth();
+        insurance::create_policy(env, policy)
+    }
+
+    /// Cancel a policy (holder or insurer)
+    pub fn cancel_insurance_policy(
+        env: Env,
+        policy_id: BytesN<32>,
+        caller: Address,
+    ) -> Result<(), Error> {
+        caller.require_auth();
+        insurance::cancel_policy(env, policy_id, caller)
+    }
+
+    /// Suspend a policy (insurer only)
+    pub fn suspend_insurance_policy(
+        env: Env,
+        policy_id: BytesN<32>,
+        insurer: Address,
+    ) -> Result<(), Error> {
+        insurer.require_auth();
+        insurance::suspend_policy(env, policy_id, insurer)
+    }
+
+    /// Expire a policy (permissionless)
+    pub fn expire_insurance_policy(env: Env, policy_id: BytesN<32>) -> Result<(), Error> {
+        insurance::expire_policy(env, policy_id)
+    }
+
+    /// Renew a policy (insurer only)
+    pub fn renew_insurance_policy(
+        env: Env,
+        policy_id: BytesN<32>,
+        new_end_date: u64,
+        new_premium: i128,
+        insurer: Address,
+    ) -> Result<(), Error> {
+        insurer.require_auth();
+        insurance::renew_policy(env, policy_id, new_end_date, new_premium, insurer)
+    }
+
+    /// Get a specific policy
+    pub fn get_insurance_policy(env: Env, policy_id: BytesN<32>) -> Option<insurance::InsurancePolicy> {
+        insurance::get_policy(env, policy_id)
+    }
+
+    /// Get all policies for an asset
+    pub fn get_asset_insurance_policies(env: Env, asset_id: BytesN<32>) -> Vec<BytesN<32>> {
+        insurance::get_asset_policies(env, asset_id)
+    }
 }