From 3e8ca619decf1adac570506bbf1c36c6954545da Mon Sep 17 00:00:00 2001
From: Roman <roman@osmosis.team>
Date: Tue, 27 Feb 2024 17:43:50 -0700
Subject: [PATCH] feat: tick init/deinit for CL (#7622)

(cherry picked from commit ea2310a6485a673981018ffac70ae494c6908fce)

# Conflicts:
#	CHANGELOG.md
---
 CHANGELOG.md                             |  5 +++++
 x/concentrated-liquidity/tick.go         | 26 +++++++++++++++++++++++-
 x/concentrated-liquidity/types/events.go |  2 ++
 3 files changed, 32 insertions(+), 1 deletion(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index ad2f43d4794..cc99a4aeac7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -45,6 +45,11 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### State Compatible
 
 * [#7590](https://github.com/osmosis-labs/osmosis/pull/7590) fix cwpool migration prop disallowing only one of code id or bytecode.
+<<<<<<< HEAD
+=======
+* [#7582](https://github.com/osmosis-labs/osmosis/pull/7582) IAVL v1
+* [#7622](https://github.com/osmosis-labs/osmosis/pull/7622) Create/remove tick events.
+>>>>>>> ea2310a6 (feat: tick init/deinit for CL (#7622))
 
 ## v23.0.0
 
diff --git a/x/concentrated-liquidity/tick.go b/x/concentrated-liquidity/tick.go
index b17cff6b893..1ddffbded7d 100644
--- a/x/concentrated-liquidity/tick.go
+++ b/x/concentrated-liquidity/tick.go
@@ -153,7 +153,21 @@ func (k Keeper) makeInitialTickInfo(ctx sdk.Context, poolId uint64, tickIndex in
 		initialUptimeTrackers = append(initialUptimeTrackers, model.UptimeTracker{UptimeGrowthOutside: uptimeTrackerValue})
 	}
 
-	return model.TickInfo{LiquidityGross: osmomath.ZeroDec(), LiquidityNet: osmomath.ZeroDec(), SpreadRewardGrowthOppositeDirectionOfLastTraversal: initialSpreadRewardGrowthOppositeDirectionOfLastTraversal, UptimeTrackers: model.UptimeTrackers{List: initialUptimeTrackers}}, nil
+	uptimeTrackers := model.UptimeTrackers{List: initialUptimeTrackers}
+
+	// Emit init tick event
+	ctx.EventManager().EmitEvents(sdk.Events{
+		sdk.NewEvent(
+			types.TypeEvtInitTick,
+			sdk.NewAttribute(sdk.AttributeKeyModule, types.AttributeValueCategory),
+			sdk.NewAttribute(types.AttributeKeyPoolId, strconv.FormatUint(poolId, 10)),
+			sdk.NewAttribute(types.AttributeKeyTickIndex, strconv.FormatInt(tickIndex, 10)),
+			sdk.NewAttribute(types.AttributeKeySpreadRewardGrowthOppositeDirectionOfLastTraversal, initialSpreadRewardGrowthOppositeDirectionOfLastTraversal.String()),
+			sdk.NewAttribute(types.AttributeKeyUptimeGrowthOppositeDirectionOfLastTraversal, uptimeTrackers.String()),
+		),
+	})
+
+	return model.TickInfo{LiquidityGross: osmomath.ZeroDec(), LiquidityNet: osmomath.ZeroDec(), SpreadRewardGrowthOppositeDirectionOfLastTraversal: initialSpreadRewardGrowthOppositeDirectionOfLastTraversal, UptimeTrackers: uptimeTrackers}, nil
 }
 
 func (k Keeper) SetTickInfo(ctx sdk.Context, poolId uint64, tickIndex int64, tickInfo *model.TickInfo) {
@@ -167,6 +181,16 @@ func (k Keeper) RemoveTickInfo(ctx sdk.Context, poolId uint64, tickIndex int64)
 	store := ctx.KVStore(k.storeKey)
 	key := types.KeyTick(poolId, tickIndex)
 	store.Delete(key)
+
+	// Emit remove tick event
+	ctx.EventManager().EmitEvents(sdk.Events{
+		sdk.NewEvent(
+			types.TypeEvtRemoveTick,
+			sdk.NewAttribute(sdk.AttributeKeyModule, types.AttributeValueCategory),
+			sdk.NewAttribute(types.AttributeKeyPoolId, strconv.FormatUint(poolId, 10)),
+			sdk.NewAttribute(types.AttributeKeyTickIndex, strconv.FormatInt(tickIndex, 10)),
+		),
+	})
 }
 
 func (k Keeper) GetAllInitializedTicksForPool(ctx sdk.Context, poolId uint64) ([]genesis.FullTick, error) {
diff --git a/x/concentrated-liquidity/types/events.go b/x/concentrated-liquidity/types/events.go
index e24838d334f..5f5338c1efa 100644
--- a/x/concentrated-liquidity/types/events.go
+++ b/x/concentrated-liquidity/types/events.go
@@ -13,6 +13,8 @@ const (
 	TypeEvtMoveRewards               = "move_rewards"
 	TypeEvtCrossTick                 = "cross_tick"
 	TypeEvtTransferPositions         = "transfer_positions"
+	TypeEvtInitTick                  = "init_tick"
+	TypeEvtRemoveTick                = "remove_tick"
 
 	AttributeValueCategory                                         = ModuleName
 	AttributeKeyPositionId                                         = "position_id"