YjdZddlmZmZmZddlmZmZmZm Z GddZ e dk(rddlm Z e d d Z gd Z e j e e Zed eed e j!e egdZe je eZedeed e j!e egdZe je eZedeed e j!e eyy)z Split engine for TripTalley expenses. Handles equal, custom, and percentage splits with largest-remainder rounding. All money amounts are in integer minor units. )DictListTuple) split_equalsplit_percentage split_customMoneyc eZdZdZededeedeeeffdZ ededee eefdeeeffdZ ededee eefdeeeffd Z eded eeefde fd Zy ) SplitEnginezW Performs expense splits using various strategies with deterministic rounding. totalparticipant_idsreturnc |siSt|j|}|jDcic]\}}|t||jc}}Scc}}w)a+ Split an expense equally among participants. Args: total: The total expense amount participant_ids: List of user IDs who are sharing the expense Returns: Dict mapping user_id to their share as a Money amount )r amount_minoritemsr currency)r r shares_minoruser_idamounts 2/srv/projects/triptalley/backend/app/core/split.pyrzSplitEngine.split_equals[I"5#5#5G '3'9'9';=#GVvu~~66= ==!Aparticipant_weightsc |siSt|j|}|jDcic]\}}|t||jc}}Scc}}w)a Split an expense by percentage weights. Args: total: The total expense amount participant_weights: List of (user_id, weight_in_basis_points) Weights must sum to 10000 Returns: Dict mapping user_id to their share as a Money amount Raises: ValueError: If weights don't sum to 10000 )rrrr r)r rrrrs rrzSplitEngine.split_percentage#s\"#I'(:(:,>>>N)__name__ __module__ __qualname____doc__ staticmethodr rintrrrrr boolr"r#rr r s=5=49=c5jAQ==$==-1%S/-B=GKCQVJGW==.=E=)-eCHo)>=CGU CS==.?e?"3:.?37??r#r __main__)r iUSD)rzEqual split of $10.00: zSum validation: ))ri)r.i )r/izPercentage split: ))ri)r.,)r/r0zCustom split: N)r'typingrrrmoneyrrr r r r$expense participantsrprintr"weights shares_pctcustom shares_customr+r#rr:s %$EEO?O?f zD% GL  $ $Wl ;F #F8 ,- [77HI JK0G--gw?J zl +, [77LM NO,F,,Wf=M N=/ *+ [77OP QR)r#