refactor: combine Chain::findFirstBlockWithTime/findFirstBlockWithTimeAndHeight

As suggested in #14711, pass height to CChain::FindEarliestAtLeast to
simplify Chain interface by combining findFirstBlockWithTime and
findFirstBlockWithTimeAndHeight into one

Extend findearliestatleast_edge_test in consequence

1 files changed, 4 insertions, 13 deletions

diff --git a/src/interfaces/chain.h b/src/interfaces/chain.h
index a9b05f27fc..069d0f7822 100644
--- a/src/interfaces/chain.h
+++ b/src/interfaces/chain.h
@@ -101,20 +101,11 @@ public:
         virtual bool haveBlockOnDisk(int height) = 0;
 
         //! Return height of the first block in the chain with timestamp equal
-        //! or greater than the given time, or nullopt if there is no block with
-        //! a high enough timestamp. Also return the block hash as an optional
-        //! output parameter (to avoid the cost of a second lookup in case this
-        //! information is needed.)
-        virtual Optional<int> findFirstBlockWithTime(int64_t time, uint256* hash) = 0;
-
-        //! Return height of the first block in the chain with timestamp equal
         //! or greater than the given time and height equal or greater than the
-        //! given height, or nullopt if there is no such block.
-        //!
-        //! Calling this with height 0 is equivalent to calling
-        //! findFirstBlockWithTime, but less efficient because it requires a
-        //! linear instead of a binary search.
-        virtual Optional<int> findFirstBlockWithTimeAndHeight(int64_t time, int height) = 0;
+        //! given height, or nullopt if there is no block with a high enough
+        //! timestamp and height. Also return the block hash as an optional output parameter
+        //! (to avoid the cost of a second lookup in case this information is needed.)
+        virtual Optional<int> findFirstBlockWithTimeAndHeight(int64_t time, int height, uint256* hash) = 0;
 
         //! Return height of last block in the specified range which is pruned, or
         //! nullopt if no block in the range is pruned. Range is inclusive.