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Replace mock time-series client with real historical data client #33
Description
Goal
Replace the mock time-series data client with a real historical data client selected from the research ticket.
Why
ARGUS needs real historical exchange-rate or market data to calculate meaningful analytics metrics. The mock client was useful for early prototyping, but Sprint 2 should move toward real data workflows.
The existing ExchangeRate API client should remain available for live conversion. The new client should provide historical time-series data for analytics.
Scope
- Add a new historical data client based on the selected source
- Fetch data for a configurable date range
- Return data in a pandas-friendly format
- Keep the client independent from GUI code
- Handle basic request and response errors
- Replace or reduce use of the mock client in analytics workflows
- Add tests with mocked HTTP/API responses
Acceptance criteria
- Real historical data can be fetched for a date range
- Output can be used by pandas-based analytics functions
- Existing ExchangeRate API live conversion remains available
- Mock client is no longer the main source for analytics data
- HTTP/API errors are handled
- Tests cover successful and failing responses
- No NiceGUI migration is included in this ticket
Note
Priority: Must
Activity
feat(#33): add func to get data from yfinance
feat(#33): normalize the dataframe from yfinance
feat(#33): replace mock-client
feat(#33): remove debug prints
refactor(#33): mock client is legacy
test(#33): add a test service
style(#33): ruff reformat
style(#33): unused lib remove
style(#33): remove unused lib
test(#33): add tests for client
style(#33): reformat with ruff
17 remaining items
Revert "docs(#33): update readme"
Revert "docs(#33): add docstrings"
Revert "style(#33): reformat with ruff"
Revert "test(#33): add tests for client"
Revert "style(#33): remove unused lib"
Revert "style(#33): unused lib remove"
Revert "style(#33): ruff reformat"
Revert "test(#33): add a test service"
Revert "refactor(#33): mock client is legacy"
Revert "feat(#33): remove debug prints"
Revert "feat(#33): replace mock-client"
Revert "feat(#33): normalize the dataframe from yfinance"
Revert "feat(#33): add func to get data from yfinance"
fix(#33): yfinance error handeling
fix(#33): ruff error handeling