Config v6

[adams85]

Describe the purpose of your pull request

Implements config v6 support.

Features/improvements:

• Fetch new config json version (config_v6.json) and update config model
• SDK key format validation (when client is not set up to use local-only flag overrides)
• AND conditions
• New condition types
  • Prerequisite flag condition
  • Segment condition
• Changed comparison operators
  • (NOT) CONTAINS ANY OF
• New comparison operators
  • BEFORE/AFTER
  • TEXT (NOT) EQUALS (both hashed and cleartext)
  • TEXT (NOT) STARTS/ENDS WITH ANY OF (both hashed and cleartext)
  • ARRAY CONTAINS ANY OF (both hashed and cleartext)
• Percentage options within targeting rules
• Percentage options based on custom attributes
• Custom User Object attribute handling (don't force string values + autoconversions under the hood)
• User Object attribute/comparison value trimming
• Comparison value hashing changes (SHA256, salting)
• Flag overrides vs. config json salt and segments
• EvaluationDetails.MatchedTargetingRule/MatchedPercentageOption properties (rename + set combinations correctly)

Tests:

• Evaluation matrix tests
• Evaluation log tests
• SDK key format validation
• Custom User Object attribute handling (don't force string values + autoconversions under the hood)
• Flag overrides vs. prerequisite flags (circular dependency, comparison value type mismatch, dependent/prereq flag overriding)
• Flag overrides vs. config json salt and segments
• EvaluationDetails.MatchedTargetingRule/MatchedPercentageOption properties (rename + set combinations correctly)

Related improvements/fixes:

• We should go to the cache in all polling modes instead of using the in memory variable (see https://trello.com/c/rreKm64A) (done earlier)

Breaking changes:

• Rename the MatchedEvaluationRule property to MatchedTargetingRule and the MatchedEvaluationPercentageRule property to MatchedPercentageOption in EvaluationDetails.
• Change config model (IConfig and related interfaces/enums).
• Change nullability of User.Custom to disallow null values.
• Change the User.AllAttributes property into a method (GetAllAttributes) as it allocates under the hood.

Requirement checklist (only if applicable)

• I have covered the applied changes with automated tests.
• I have executed the full automated test set against my changes.
• I have validated my changes against all supported platform versions.
• I have read and accepted the contribution agreement.

[laliconfigcat]

[endret]

it would be nice to ensure some explicit unit tests for new utils functions.

[sonarcloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
15 Code Smells

91.6% Coverage
0.0% Duplication