Refactor payment

[fremartini]

closes #385

[codecov[bot]]

Codecov Report

Merging #465 (b818b09) into develop (ceebec7) will increase coverage by 6.39%. The diff coverage is 82.92%.

:exclamation: Current head b818b09 differs from pull request most recent head 72ff3a9. Consider uploading reports for the commit 72ff3a9 to get more accurate results

@@             Coverage Diff             @@
##           develop     #465      +/-   ##
===========================================
+ Coverage    59.70%   66.09%   +6.39%     
===========================================
  Files           89       99      +10     
  Lines          943     1106     +163     
===========================================
+ Hits           563      731     +168     
+ Misses         380      375       -5     

Flag	Coverage Δ
unittests	66.09% <82.92%> (+6.39%)	:arrow_up:

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
lib/core/external/external_url_launcher.dart	0.00% <0.00%> (ø)
...tures/purchase/domain/entities/payment_status.dart	33.33% <ø> (ø)
lib/features/user/domain/entities/role.dart	42.85% <ø> (ø)
lib/utils/firebase_analytics_event_logging.dart	0.00% <ø> (ø)
...es/purchase/data/repositories/payment_handler.dart	10.00% <10.00%> (ø)
.../purchase/data/repositories/mobilepay_service.dart	67.74% <67.74%> (ø)
...es/purchase/presentation/cubit/purchase_cubit.dart	97.72% <97.72%> (ø)
.../data/datasources/purchase_remote_data_source.dart	63.63% <100.00%> (ø)
.../purchase/data/models/initiate_purchase_model.dart	100.00% <100.00%> (ø)
...es/purchase/data/models/single_purchase_model.dart	100.00% <100.00%> (ø)
... and 8 more

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